A comprehensive resource for safe and responsible laser use
News: Statistics, laws and all other laser pointer news
This webpage has a chronological list of general laser pointer news. There are separate pages for specific aviation-related incidents and non-aviation-related incidents. In addition, the What’s new at the website page lists major changes, updates, and additions to LaserPointerSafety.com.
We sometimes add older news items; since the list is chronological, items new to this page won’t always appear at the top. You may want to scroll down to see if there are new items since the last time you visited.
The container was 100 feet long and had to fit with a clearance of about six inches on each side.
In testing the container’s fit in the C-5C, engineers originally used cameras to line up the container within 1/2 inch of the aircraft centerline. However, the camera method did not work in practice.
So lead project engineer John Andersen suggested using laser guides from a local home repair store. One laser would shine along the centerline of the floor, the other would mark the centerline of the back of the shipping container. As Anderson explained, “So, for about $70, we bought the laser guides, set them up, and we were able to load the container perfectly by following the laser lines.”
He added, “I’m glad we came up with a cheap solution to load the container on the aircraft using the lasers. It didn’t cost thousands of dollars to do it or a lot of time.”
The space telescope is scheduled to be launched from French Guiana in 2019.
From the Dayton Daily News
The Coast Guard cannot use standard laser eye protection, such as is used in laboratories and industry, because it blocks too much light. One of the options the RDC is looking at is “a flexible optical filter that is reflective of lasers only and has just a slight tint, so it doesn’t interfere with the pilot’s visibility. The material can be applied to any transparent surface, such as the cockpit windshield, to deflect harmful laser beams and prevent them from reaching the inside of the cockpit.”
The chief of the Coast Guard’s Safety Program Management Division indicated eyewear or visors would be short-term solutions, and laser protective coatings for the aircraft would be a long-term solution.
According to Coast Guard information, “[o]nce finalized, the RDC findings will be integrated into an ongoing laser eye protection project the Office of Safety and Environmental Health is conducting in partnership with the Naval Aeromedical Research University in Dayton, Ohio, and the Air Force Research Laboratory at Wright-Patterson Air Force Base in Ohio.”
From a February 21 2018 blog post from the U.S. Coast Guard. Click the “Read more” link for the full blog text. Thanks to George Palikaras for bringing this to our attention.
Click to read more...
Canada: Looking at "all possible options" to fight laser incidents; perhaps a ban and mandatory labels
The statement came after six laser incidents over two days earlier in the month, at Montreal’s Trudeau Airport. Garneau said these made him “very, very mad.”
A Transport official said the options include a ban on importation of powerful lasers, mandatory warning labels, and stronger penalties for those who are caught.
Garneau noted that it is hard to catch a laser perpetrator, making prosecutions “few and far between”. He believes that some people are not aware of the bright-light danger of laser light, but that others “know darn well what they’re doing” and are trying to “provoke something.”
Transport Canada currently has a program called “Not-a-Bright-Idea,” trying to educate the general public about the risks and legal consequences of aiming lasers at aircraft. Since implementing the program in May 2016, laser incident numbers have dropped. There were 590 reported incidents in 2015, 527 in 2016, and 379 in 2017.
Garneau said that despite the 28 percent drop, Transport Canada must do more, and that is why they are exploring other options.
From 660 News and AVweb
Note: In response to a LaserPointerSafety.com request, an email address for interested persons was provided: “Transport Canada is exploring options to reduce laser strikes. Canadians and industry members can provide information to the Civil Aviation Communications Centre by emailing: email@example.com”
Background: Recent years have seen a marked increase in laser-pointer-related injuries, which sometimes involve severe retinal damage and irreversible visual impairment. These injuries are often caused by untested or incorrectly classified devices that are freely available over the Internet.
Methods: We reviewed pertinent publications retrieved by a systematic search in the PubMed and Web of Science databases and present our own series of clinical cases.
Results: We identified 48 publications describing a total of 111 patients in whom both acute and permanent damage due to laser pointers was documented. The spectrum of damage ranged from focal photoreceptor defects to macular foramina and retinal hemorrhages associated with loss of visual acuity and central scotoma. On initial presentation, the best corrected visual acuity (BCVA) was less than 20/40 (Snellen equivalent) in 55% of the affected eyes and 20/20 or better in 9% of the affected eyes. Treatment options after laser-pointer-induced ocular trauma are limited. Macular foramina and extensive hemorrhages can be treated surgically. In our series of 7 cases, we documented impaired visual acuity, central visual field defects, circumscribed and sometimes complex changes of retinal reflectivity, and intraretinal fluid. Over time, visual acuity tended to improve, and scotoma subjectively decreased in size.
Conclusion: Laser pointers can cause persistent retinal damage and visual impairment. In view of the practically unimpeded access to laser pointers (even high-performance ones) over the Internet, society at large now needs to be more aware of the danger posed by these devices, particularly to children and adolescents.
From Birtel J, Harmening WM, Krohne TU, Holz FG, Charbel Issa P, Herrmann P. Retinal injury following laser pointer exposure—a systematic review and case series. Dtsch Arztebl Int, 2017 DOI: 10.3238/arztebl.2017.0831. Original in German, translation in English.
In a January 22 2018 Hackaday post, Tom Nardi purchased a “Home Accents Holiday Multi-Color Light Projector” from a hardware chain on clearance, marked down from $56 to just $14.
He removed the cover with four screws and found the parts inside used connectors instead of solder: “It’s like they wanted us to strip it for parts.”
The lasers were defocused inside. “…[A]t 3 meters the spots looked as large as dinner plates…. Once focused, it becomes pretty clear that these lasers are quite a bit more powerful than the <5 mW listed on the product’s warning sticker.”
The green and blue laser diode modules inside the holiday projector
Nardi noted that the blue laser, when focused, was “easily able to burn pieces of paper and punch holes in black plastic.” He also estimated that the green laser was “at least twice as bright” as a laser pointer he owns that claims to be 50 mW: “…it certainly would not surprise me if they are both [green and blue] at least 100 mW.”
Nardi writes: “If your biggest take-away from this post is that the Home Depot is selling a 440 nm laser you can use to burn stuff, I certainly don’t blame you.”
From Hackaday. LaserPointerSafety.com has a page with more information, including measurements of the beam output of a Star Shower projector, here.
Commentary from LaserPointerSafety.com: In fairness to Home Accents, the FDA-required warning sticker has to do with the laser power of the unopened unit in its factory configuration. Class 3R (IIIa) laser projectors like this are not allowed in the U.S. to be over 5 mW output power. It may be that after going through the holographic diffraction grating that creates the stars, that the Home Accents projector meets Food and Drug Administration requirements for user access to laser light.
The Laser Aircraft Strike Suppression Optical System (LASSOS) uses two or more low-light CCD sensor cameras that observe the night sky, each with a star tracker that determines the attitude of the sensor. The cameras observe a volume of airspace such as around an airport. Beam locations are identified by analyzing the two (or more) different views to find the endpoint of the laser beam.
In one test, LASSOS identified the ground location of a laser beam aimed into the sky, using two cameras located nine nautical miles away. The locations was determined within 30 seconds. The system was so accurate that it could differentiate between locations separated by only 5 meters.
A key attribute of LASSOS is that the final output is a Google Earth map with the beam and perpetrator location overlaid. This makes it easy for law enforcement to know the area they will be searching for the perpetrator.
An MIT press release gave no indication of potential installation and operational costs, and did not indicate any further plans for testing or implementation.
LASSOS was developed under Air Force Contract No. FA8721-05-C-0002 and/or FA8702-15-D-0001.
From a September 2017 MIT Lincoln Laboratory press release, reprinted below (click the “read more” link.) MIT also has a YouTube video of the system; the LASSOS description begins about 56 seconds into the video. Thanks to Greg Makhov, who brought this to our attention via a Tech Briefs article printed in January 2018.
Here is the same data, plotted to show the average number of illuminations per day, during each year:
For additional charts and statistics, click the “read more” link.
UK: "Call for evidence" response summarizes many groups' views on laser eye, plane incidents; sets forth actions
The U.K. government published on January 8 2018 a 14-page report on laser pointer safety and potential regulation. The report includes two new actions the government will take to reduce the number and risk of unsafe laser pointers:
1) “strengthening safeguards to stop high-powered lasers entering the country”, and
2) “working with manufacturers and retailers to [voluntarily] improve labeling.
Separately, the U.K. government published the Laser Misuse (Vehicles) Bill on December 20 2017. This makes it illegal to point a laser at vehicles, with a prison term of up to five years and an unlimited fine.
“Laser pointers: call for evidence - government response”
From August 12 to October 6 2017, the Department for Business, Energy and Industrial Strategy opened a “Call for Evidence” consultation. BEIS set forth 19 questions, asking the public to give their views on laser pointer hazards and what actions to take.
The January 8 2018 government response summarizes the 265 responses received.
The report is especially useful because it incorporates the views of many disparate groups: pilots (64% of respondents), “concerned members of the public” (14%), professional laser safety advisors (9%), users of laser pointers (6%), ophthalmologists (6%), and Trading Standards authorities (2%).
The report then distills these views, finding surprising commonality. It is a good overview for the non-expert on two topics:
1) Actual laser pointer hazards — separating fact from fear
2) Potential actions to reduce the number and severity of laser pointer injuries and incidents — including what actions may not work (e.g., licensing).
We have summarized the findings below (click the “read more” link). However, reading the complete document is well worth the time of anyone interested in this issue.
Click to read more...
In addition, “new measures are also being introduced to tackle the sale of unsafe pointers, including more stringent testing.”
The move was supported by the British Air Line Pilots Association (BALPA).
It may help reduce the number of laser pen illuminations of trains (578 incidents were reported between April 2011 and November 2017) and eye injuries (more than 150 reported since 2013, mainly involving children).
Consumer Minister Margot James said the ministry is “going further than ever before” to police the sale of unsafe lasers.
The Argus quoted Professor John O’Hagan, of Public Health England’s laser and optical radiation dosimetry group.He said: “Over time we have become increasingly concerned about the dangers of growing numbers of unlabelled and incorrectly labelled high power laser pointers being bought by the public. It is tragic that we continue to see eye injuries, especially in children. Laser safety experts at Public Health England have worked closely with local authorities in stopping large numbers of these lasers reaching UK consumers. The extra protections proposed should help even further - if you have a laser and you don’t need it, remove the batteries and get rid of it.”
From The Telegraph and The Argus. The stories seem to be a result of the U.K. government publishing, on January 8 2018, a response to their fall 2017 Call for Evidence. The government response included the increased import enforcement actions.
See also the December 2017 news of a new U.K. law that provides stronger penalties for aiming at aircraft. The new import/consumer initiative seems to be part of the government thrust against illegal and overpowered laser pens.
On Dec. 22, 2017, Santajoy initiated a nationwide recall of Galaxy Holiday Laser Lights and Northern Lights Holiday Laser Lights. These laser projection products may incorporate a laser having a higher output than intended and fail to comply with FDA performance standard requirements (21 CFR 1040.10 and 1040.11). These higher-power lasers have the potential for eye injury.
Consumers who purchased any of the 5,254 units of Galaxy Holiday Laser Lights and Northern Lights Holiday Laser Lights sold by Walmart between August 1, 2017 and October 25, 2017 should stop using them and return them to any Walmart store for a full refund.
The Galaxy Holiday Laser Lights and Northern Lights Holiday Laser Lights were manufactured from May through September 2017 and distributed from August through October 2017. The affected products sold by Walmart can be identified by the packaging photos and UPC numbers shown below.
Santajoy voluntarily recalled these products after becoming aware that the product presented a potential safety hazard and has notified the FDA of this action. There have been no reports of injury related to the use of these products. Santajoy is notifying the public through this press release, and Walmart is accepting the return of these products for a full refund.
Walmart Stores Inc. distributed these products nationwide. Consumers with questions may contact Walmart via telephone at 1-800-Walmart from 7 a.m. to 9 p.m. CT Monday through Friday or online at www.corporate.walmart.com/recalls for more information.
Note: As of January 1 2018, neither laser was listed on the Walmart Product Recalls webpage. The product recall also did not appear to be at FDA’s recalls webpage or enforcement report webpage, as of January 1. The only online source on that date was the December 22 2017 Business Wire press release, or a few publications and news sources such as KCTV that reprinted the Business Wire press release.
If this rate of 14 incidents per month holds for December, the 2017 total will be around 169. This would be an 11% increase over 2016.
The information comes from the Civil Aviation Authority which noted that most incidents occurred in metropolitan centers. The CAA deputy director of air transport and air worthiness, Mark Hughes, warned "People are not aware of the significance of it. It's sort of a lark, or a fun thing to do, not recognizing that actually they're causing a real safety issue and creating a danger for pilots and passengers…. It could cause an accident if the pilot is visually impaired at a critical phase of the flight.”
From Radio New Zealand
The text of the bill is here. A House of Lords Summary Briefing, giving some background, is here.
Tough new penalties for misuse of lasers
People who target transport operators with laser devices could be jailed for up to 5 years under new laws designed to protect the public.
The Laser Misuse (Vehicles) Bill, which was published today (20 December 2017), will also expand the list of vehicles, beyond just planes, which it is an offence to target with lasers.
Drivers of trains and buses, captains of boats and even pilots of hovercraft will be among those protected by the new legislation.
The bill will make it easier to prosecute offenders by removing the need to prove an intention to endanger a vehicle.
And it will remove the cap on the amount offenders can be fined – which is currently limited to £2,500 – paving the way for substantial sanctions. Fines could be issued in isolation or alongside a prison sentence.
The police will also be given additional powers to catch those responsible for the misuse of lasers.
Aviation Minister, Baroness Sugg said:
“Lasers can dazzle, distract or blind those in control of a vehicle, with serious and potentially even fatal consequences.”
“The government is determined to protect pilots, captains, drivers and their passengers and take action against those who threaten their safety.”
Alongside their existing powers of arrest and the ability to search a person once arrested, officers will no longer need to establish proof of intention endanger to a vehicle, aircraft or vessel, making it easier to prosecute swiftly. It will be an offence to shine or direct a laser towards a vehicle if it dazzles or distracts the operator, if done deliberately or if reasonable precautions to avoid doing so are not taken.Click to read more...
Enjoy Your Holiday Laser-light Display Responsibly
Each holiday season for the past several years, the Federal Aviation Administration (FAA) has received reports from pilots who said they were distracted or temporarily blinded by residential laser-light displays.
The FAA's concerns about lasers – regardless of the source – is that they not be aimed at aircraft in a way that can threaten the safety of a flight by distracting or blinding the pilots. People may not realize that systems they set up to spread holiday cheer can also pose a potential hazard to pilots flying overhead.
So if you’re going to install a holiday laser-light system, please make sure the lights are hitting your house and not shining up into the sky. It may not look like the lights go much farther than your house, but the extremely concentrated beams of laser lights actually reach much further than most people think.
If the FAA becomes aware of a situation where a laser-light display affects pilots, we start by asking the owner to adjust them or turn them off. However, if someone's laser-light display repeatedly affects pilots despite previous warnings, that person could face an FAA civil penalty.
Note: The FAA press release was reprinted in a number of news sources including KUSA, the News Tribune and SFGate.
LaserPointerSafety.com has a separate story about the number of FAA laser incident reports in 2017 due to actual or suspected holiday light displays.
FDA gave these examples of laser toys:
- Lasers mounted on toy guns that can be used for “aiming”;
- Spinning tops that project laser beams while they spin;
- Hand-held lasers used during play as “light sabers”; and
- Lasers intended for entertainment that create optical effects in an open room.
According to the Consumer Update, “Toys with lasers are of particular interest to the FDA because children can be injured by these products. Because they are marketed as toys, parents and kids alike may believe they’re safe to use.”
The FDA had tips for safe use, including:
- Do not aim at persons or animals
- Do not aim at any vehicle, aircraft or shiny surface; or persons playing sports
- Children’s toy lasers should be Class I.
- Children should not be allowed to own or use laser pointers. Pointers are not toys.
- Do not buy or use any laser that emits more than 5 milliwatts.
- See a health care professional in case of a known or suspected laser eye injury.
The FDA’s health warning was referenced in numerous news and publication sources over the 2017 holiday season.
From the FDA Consumer Update, “Laser Toys: How to Keep Kids Safe”. FDA also linked to a 2015 FDA YouTube video on laser pointer safety.
For background, LaserPointerSafety.com has a series of webpages about laser toys which begin with a summary here.
Particulates by Rita McBride
Spectators are prevented from accessing the beam by means of a fence-like barrier.
Artist Rita McBride created Particulates out of her interests in space, time travel and quantum physics. From the exhibition brochure:
“The 2017 commission by Rita McBride, Particulates, features a type of high-intensity laser that is normally reserved for industrial, military, and scientific use to harness light’s efficient capacity to articulate space. At first glance the lasers clearly define the geometry of a hyperboloid of revolution, a hyperbola rotated around a single axis. Yet the contours of this shape are dispersed by the constant motion of particulate matter—ambient dust and molecules of water circulating in the air—that becomes visible as it passes through the beams of light….. However, the real and imaginative spaces conjured by Particulates remain elusive, and are protected by a series of custom carbon-fiber panels, titled Guidance “Barriers” (2017), which the artist designed to keep us at a lawful distance.”
It is on exhibition at the Dia:Chelsea from October 27 2017 until June 2 2018. CT Lasers provided technical support.
From Engadget. Photo by the artist.
FDA listed the following actions:
X-Laser LLC will bring into compliance:
1. All purchasers and associated dealers of affected LLS projector models will be notified by mail and email of their failure to comply with the performance standard. The notification will follow the format and include the information required by 21 CFR 1003.21. Those that do not respond within 14 days will be notified a second time. Those not responding to the second attempt will be notified again every 6 months for the next 2 years. Non-responsive dealers will be ineligible for future orders.
2. All affected LLS projectors will be repaired by removing the auto and music modes from the dipswitch accessible settings, after which, these modes will only be accessible through the DMX connection. These actions, including transportation of the LLS projector, will be made free of charge.
3. All LLS projector models that X-Laser receives, regardless of purpose, will be checked for dipswitch accessible auto or music modes and repaired if needed.
4.Corrective actions will be completed within 120 days of receipt of this letter.
For further questions please call (866) 702-7768.
For additional details from X-Laser, click the “read more” link. Click to read more...
Laserworld set up a special website, www.cdrh.info, with a statement and information from their viewpoint.
The International Laser Display Association published guidance for ILDA Members and others who are doing shows in the U.S. with Laserworld and RTI projectors.
He said a drone-mounted laser could take 2-3 hours to do a weed-killing job that would take a farmer 2-3 days.
Ghamkhar hopes to start testing the lasers in the lab, in early 2018, with drone-mounted laser tests in the late summer or early fall of 2018. The project has been funded with NZD $1,000,000 for three years.
The researcher noted possible laser-related hazards: "There are issues we would have to consider such as heat generated by the lasers, and the risk of starting fire, and we'll be very conscious of this particularly where there are dry days or drought conditions. We'll also be looking at using a group of small lasers to direct at the weed, as opposed to one large and powerful laser that might generate more heat."
From an October 4 2017 story at Stuff.co.nz
Kensington’s new $99 Ultimate Presenter with Virtual Pointer instead uses a software program to create an on-screen dot to highlight PowerPoint and similar computer presentations.
The company noted that “[b]right LED screens or safety regulations can pose limitations with traditional lasers.” A spokesperson said “The presenter overcomes the screen limitations and regulatory restrictions of traditional laser pointers….”
The screen limitations referred to are that bright screens can wash out a laser dot, especially a relatively dim dot such as the one from a Class 2 (<1mW) red pointer.
Screenshot from a Kensington video. In the background, the red dot is the software “laser pointer” dot.
Kensington also continues to sell a line of presentation remotes that use red or green laser pointers.
From a September 26 2017 Kensington press release
According a September 12 2017 BAE press release, a “series of successful laboratory trials have proven our method is effective against a wide range of laser wavelengths.”
BAE researchers told LaserPointerSafety.com: “The film, when installed can be programmed with a number of critical wavelengths (typically three). This film can be upgraded at a later date by either replacing it entirely or adding on a new layer retrospectively to give protection against a new or emerging threat.”
They noted that the film has been measured as having 70% visible light transmission in a multi-wavelength blocking configuration.
The BAE film may be similar in general concept to another film from Metamaterial Technologies Inc. which has been tested by Airbus and is entering the production and deployment stages.
More information about anti-laser windscreen film in general and the MTI version specifically is here.
A press release from BAE is printed below. BAE also made available a graphic with similar information; click the blue “Click to read more…” link to see these.
UPDATED September 13 2017 —We reached out to BAE for additional details about their film; answers are after the press release and graphic.
Click to read more...
The form is filled out by commercial and professional users who want to operate lasers outdoors, including laser light shows, observatories, LIDAR operators, and satellite communications.
According to FAA, there have been about 400 laser operators who filled out the form. The agency also says it takes 4 hours to gather information needed for the form and to fill it out.
FAA needs to periodically review whether the form is useful and whether the 4-hour estimate is accurate. The deadline for comments is October 30 2017.
The August 31 2017 Federal Register notice states:
“In accordance with the Paperwork Reduction Act of 1995, FAA invites public comments about our intention to request the Office of Management and Budget (OMB) approval to reinstate a previously approved information collection. In order for the FAA to ensure safety it proposes to collect information from potential outdoor laser operators. The FAA will review the proposed laser activity against air traffic operations and verify that the laser operation will not interfere with air traffic operations.”
The notice details what information specifically is requested:
“You are asked to comment on any aspect of this information collection, including (a) Whether the proposed collection of information is necessary for FAA's performance; (b) the accuracy of the estimated burden; (c) ways for FAA to enhance the quality, utility and clarity of the information collection; and (d) ways that the burden could be minimized without reducing the quality of the collected information. The agency will summarize and/or include your comments in the request for OMB's clearance of this information collection.”
Form AC 7140-1 does not impact laser pointer users per se, but it can affect professional outdoor laser users.
- The most impacted are outdoor laser light show operators. They are required by the Food and Drug Administration to submit their shows to FAA, and to receive a “letter of non-objection” from FAA, before FDA will grant permission (a “variance”) for a show.
- All other outdoor users are requested to submit Form AC 7140-1, but are not legally required to do so. This is because FAA has no regulatory authority to restrict outdoor laser usage. There may be organizations such as NASA or observatories that have internal requirements to submit AC 7140-1 and receive a letter of non-objection. This is usually done in the spirit of cooperation and/or to help avoid liability issues in case of problems.
Additional information, including instructions on how to submit comments, is at the Federal Register notice webpage. LaserPointerSafety.com has a webpage with suggested corrections to Advisory Circular 70-1, and advice on filling it out.
A few pages and graphics were leaked from a 22-page Apple document, the March 3 2017 “Visual/Mechanical Inspection Guide,” including this page showing the service eligibility for common problems:
The page lists common items such as liquid damage, broken screens, cracks — and “Damage due to laser contact with camera.”
It is likely that elsewhere in the leaked document are details about the laser damage, along with other example photos. However, only a few pages of the document were publicly revealed.
A page like this was first revealed in 2014. The document leaked September 1 2017 covers Apple’s most current iPhones: 6, 6S, 7 and associated “Plus” versions.
From Business Insider via MacRumors.
In an interview, Chief Warrant Officer Robert Williams discusses the hazards of laser interference with pilots. He recounts an episode in mid-July 2017 where he and a co-pilot were lased. They identified the source of the laser beam. Ground officers found that the perpetrator was a teenager. Williams said “We specifically requested that the cops not get the FBI involved. I don’t want any kids going to jail or getting felony charges on their record.”
He added, “When the cop showed up at the door and explained to the dad what was going on, the dad broke the kid’s laser there on the spot.”
The reluctance to report appears to stem from a 2009 lasing incident which was reported to the FBI. A 30-year-old man, Joshua Don Park, “on a whim” decided to aim a cat laser pointer at a Utah National Guard helicopter. Park told arresting officers that he was unaware the laser’s light could interfere with pilots’ operations. The Journal story says Park “faced up to five years in prison. [Another source says he faced up to 20 years.] Tragically, he committed suicide shortly before he could be sentenced.”
The story continues, “Since that sobering incident, no Utah National Guard pilots have reported lasing incidents to the FBI—but not for lack of occurrences. ‘My unit alone has had two incidents in the past three months,’ said Williams.”
From the South Valley Journal. More details about the original February 2009 lasing and September 2009 suicide are here.
Interested parties are requested to submit answers to these questions — and any free-form answers as well — via an online survey, by postal mail, or by sending an email by October 6 2017.
Additional information and links about the U.K. call for evidence are here.
1. What do you consider to be the scale of the problem with laser pointers? Is the problem specific to high-powered laser pointers (those with a strength of 5 mW or above), or a particular class of laser pointers? What evidence do you have to support your view?
2. How well do you think the current legislation is working? Is the current guidance on safe use of laser products sufficient?
3. Is the current guidance on manufacturing and importing laser pointers sufficient?
4. Do you have any further evidence about the nature and misuse of laser pointers?
5. What legitimate uses are there for high-powered laser pointers?
6. Have you ever purchased, sold or made a laser pointer? If so, can you provide more information about where you bought or sold the product (or its component parts), and what the intended use was?
7. (Enforcement Bodies) Do you know/can you estimate the number of manufacturers, retailers, importers and/or distributers within your Local Authority area?
8. What strength laser pointers do you make/sell? What is the price of each strength laser pointer that you make/sell? Is this a seasonal product (e.g. do you sell more at Christmas)? How many do you sell annually?
9. What is your target market?
10. (If you are an enforcement authority) Have you undertaken any enforcement actions with respect to laser pointers, and if so what were they?
11. (If you are an enforcement authority) What do you estimate as being the level of compliance with the General Product Safety Regulations for laser pointers in your area? On what evidence do you base this?
12. Do you think a licensing system to control the sale and purchase of laser pointers would be effective?
13. What do you estimate the costs of implementing a licensing system to be? How should these be recovered?
14. How might a licensing regime operate? Who should administer a licensing system? Who should enforce it?
15. Are you aware of any other licensing systems in the UK or in other countries – either for laser pointers or for similar products - which might provide the Government with a useful comparison?
16. Do you think that a ban on advertising laser pointers would be effective? Why?
17. How else might Government and other public authorities increase public awareness about the potential dangers of laser pointers?
18. How else do you think that the supply of high-powered laser pointers could be restricted? Why?
19. Do you have any other comments or views which might inform the Government’s recommendations?
The government is concerned both with hazards from aiming laser pointers at pilots, drivers and train operators, and the potential for retinal damage among consumers when high-powered lasers are aimed into eyes.
They opened a consultation asking for suggestions for eight weeks, starting August 12 and closing at 11:45 pm on October 6 2017. A 23-page Call For Evidence PDF document is posted at the open consultation webpage. It includes background information on laser hazards and misuse.
There are 19 specific questions asked by the government, plus it is possible to respond with free-form text. Persons can respond via an online survey, by postal mail, or by sending an email.
The full text of the government’s press release is below.
From the UK government press release “Government crackdown on misuse of laser pointers”, the open consultation “Laser pointers: Call for evidence” webpage, and the call for evidence online survey webpage.
Click to read more...
How has the “Photonic Fence” device progressed? The short answer is that it is still being developed. It is just about to have its first excursion outside the lab.
In a 2,500-word article in the July 24 2017 New York Magazine entitled “Where’s Our Laser-Shooting Mosquito Death Machine?” writer Carl Swanson looked into the Photonic Fence progress.
Swanson visited Myhrvold’s company Intellectual Ventures. He watched a demonstration which he says “is, as you might expect, enormously satisfying. There is the laser itself, aimed by a mirror that is synced to a camera that identifies the pest marked for death based on its shape and size and the distinctive beat of its wing, and a monitor that allows you to watch its autonomous targeting. And it does so fast: 100 milliseconds is the time allotted to see the bug and shoot it for the 25 milliseconds it takes to kill it.” He said the system has killed more than 10,000 mosquitos in the lab.
But the mosquito-targeting system is still in the testing phase. Swanson notes “It’s taken years of development to figure out how to continuously track and identify a specific type of insect and then dispatch it safely and efficiently.”
Eye safety for humans is one consideration: “For instance, for the demonstration, I had to wear protective goggles since that type of laser is not safe for your eyes; I was assured that when it’s market-ready, the laser they deploy will not potentially blind human passersby.”
A major barrier is cost: “And no one has yet worked out how to make the device cheap enough to be useful in the places it is most needed, places where most people’s mosquito-defense system consists of sleeping under nets every night.”
The system “will finally be tested later this summer in Florida, in a screened-in structure, against the Asian citrus psyllid, an invasive bug that is devastating the state’s orchards.” If that goes well, it will then be tested in the open.
From New York Magazine
The chart below shows cumulative laser illuminations for the period Jan. 1 - June 30, for each of the past 10 years. The blue 2017 line shows that thus far there have been fewer incidents in 2017 than in 2016, but more than in 2015.
How to read this chart: Each year starts with 0 illumination reports. Each colored line then plots the cumulative (year-to-date) illumination reports for that year since January 1. For example, looking at the 2016 top green line, there were about 1000 reports between Jan. 1 and Feb. 12 (where the green 2016 line crosses the 1000 horizontal line). In contrast, in 2013 (purple line) there were roughly 500 reports between Jan. 1 and Feb. 12 (where the purple 2013 line crosses the 500 horizontal line).
Based on historical data, LaserPointerSafety.com projects that there will be around 7,200 laser illuminations reported to the FAA in 2017. This would be about 4% lower than the 7,442 reports in 2016, and about 7% lower than the 7,703 reports in 2015.
The next chart shows the number of laser illuminations per day. Each line is a different year. The lines have been smoothed by averaging the previous 30 days (a 30-day moving average). For this reason, the lines do not start until January 30.
This shows trends within a year. For example, in both 2016 and 2017 the number of reports dropped significantly in early May, while in 2015 the number of reports was more constant during that period.
The chart below shows the number of laser illuminations for every single day between Jan. 1 2007 and April 29 2017. The light spiky line shows each day’s illumination reports. This number can vary widely from one day to the next. The dark line is a 60-day moving average. This helps smooth out the data, in order to show longer-term trends.
From these charts, it can be seen that illumination reports grew slowly, or even declined, in the first few months of 2015, 2016 and 2017. However, in the final months of 2015 and 2016, the number of illumination reports picked up significantly. The estimate above (that there will probably be around 7,200 reports in 2017) takes this effect into account.
Statistical note: The careful reader will see that the blue 2017 line in the first chart falls between the 2016 and 2015 lines. Yet LaserPointerSafety.com predicts 2017 as a whole (Jan-Dec) will be lower than both 2016 and 2015. This is because we used all ten years, 2007-2016, to estimate the year-end total as a proportion of the first six months. Both a simple average of these ten years, and a weighted average — where more recent years have a larger effect — indicate that the 2017 total will be in the ballpark of 7,200 illuminations. In other words, 2015 was an atypical year where illuminations in the last eight months of the year grew much faster than any other year.
The information was released to help reassure any residents who might see the beam. The Navy called the beam “eye-safe” and said the beam would be turned off if an aircraft or watercraft is within 300 meters.
The purpose of the test is to “evaluate the performance of a laser system at long range over water,” according to a spokesperson. The laser would be aimed from the source to a target as far as 13 miles away.
There was speculation that the laser was 150 kilowatts, based on an earlier speech by the vice chief of naval operations. However, the spokesperson said the June 27 test would not be using the 150 kW laser.
From the Baltimore Sun, WTOP and the town of Morningside, Maryland
In previous years the Air Navigation and Weather Service had 4-5 reports per year of laser interference. As of late June 2017, there had been 8 reports.
The most recent incident happened June 21 2017, when China Airlines flight 163 was landing at Taoyuan International Airport. Laser beams were coming from near to the runway. The pilot “requested that the interference be moved, after which the flight landed safely.”
From the Taipei Times
Despite “dangerously high” figures on laser attacks on aircraft, the new Government has dropped plans to introduce tougher laws, a move which the UK pilots’ association says is “infuriating and dangerous”.
BALPA had been campaigning for the tougher laws in response to consistently high reports of laser attacks on planes year on year. Last year’s figures stood at more than 1,200 reported attacks.
Before the [June 8] general election, the British Airline Pilots’ Association (BALPA) was pleased to see a specific laser offence included in the Vehicle Technology and Aviation Bill. The new offence proposed that offenders could face up to five years in prison if they shone a laser at an aircraft.
However, BALPA has now learned that the Bill will not now include the laser regulations.
The association has constantly warned that shining a laser at aircraft is extremely dangerous, particularly in critical phases of flight such as take-off and landing, putting the lives of passengers at risk. BALPA General Secretary, Brian Strutton, said:
“It is infuriating to see the changes we’d hoped for appear to have been discarded. Not having this legislation is dangerous and puts the lives of passengers and crew at risk.
“The proposed tougher laws received cross-party support so it’s baffling that they have been dropped.
“When a laser pen is pointed at an aircraft it can dazzle and distract the pilot, and has the potential to cause a crash. Last year’s incident figures remain dangerously high, with the equivalent of more than three laser attacks a day across the UK.”
The Guardian has a June 22 2017 story about BALPA’s criticism, with additional information and statistics on U.K. laser incidents.
An April 20 2017 analysis of the Vehicle Technology and Aviation Bill, written by the law firm of Addleshaw Goddard LLP, had this description:
The Bill makes it an offence to direct or shine a laser beam at a vehicle in such a way as to dazzle or distract the person driving, piloting or navigating that vehicle.
This offence is not completely new. Under section 225 of the Air Navigation Order 2016, it was an offence to 'dazzle or distract' the pilot of an aircraft and under section 240 it was an offence to 'recklessly or negligently act in a manner likely to endanger an aircraft, or any person in an aircraft'. Many have argued these offences are insufficient as they are limited to aircraft, and are summary offences only which restrict police powers. The new offence therefore applies to all 'Vehicles', which are defined as anything used for travel by land, water or air and so will apply in relation to trains, buses and other forms of transport. The penalties remain the same: a maximum fine and imprisonment for up to 5 years.
However, many still consider the new offence insufficient. A number of organisations and rights groups wanted lasers to be reclassified as offensive weapons when used in some circumstances, particularly following the failure last year of a Private Members Bill which had sought to make the sale of high wattage lasers unlawful in certain circumstances.
Satair Group is a subsidiary of Airbus which offers parts management, service and support for all types of aircraft. Satair expects to receive a Supplemental Type Certificate from the U.S. Federal Aviation Administration, the European Aviation Safety Agency, and Transport Canada Civil Aviation in early 2018. Other jurisdictions will follow.
The metaAIR film was invented and is manufactured by Metamaterial Technologies Inc. (MTI) of Halifax, Nova Scotia. The company previously worked with Airbus to evaluate, verify and test metaAIR for use in Airbus aircraft; initially for the A320 family. The Satair agreement will bring metaAIR to all commercial aircraft including Airbus and Boeing.
From a June 21 2017 MTI press release. For more details, click the link below for an interview with MTI’s George Palikaras, discussing the technology and this agreement.
Click to read more...
It works by putting a standard pen-type laser pointer between two cams. Cranking a handle turns the cams which bounce the laser pointer up/down and left/right to create projected patterns:
By using different cam shapes, different patterns can be projected:
Instructions and plans are available online, including Thingiverse 3D printing files.
Stanford noted “At this point I think it is unlikely I will continue the project. But if I did, here’s what I could do:” He then listed adding blinds to make discontinuous patterns, making the device motor driven, and adding a web service to make it easier to create new cam patterns.
From Evan Stanford’s Hackaday.io page, posted in mid-June 2017
The editorial notes that in the late 2000s, New Jersey beachfront cities had problems with widespread laser sales — followed by widespread misuse. Ocean City NJ banned laser sales and possession in the summer of 2010, as did another Jersey Shore city, North Wildwood, a few years later.
The paper wrote “Apparently, coverage of the incidents and bans was enough to spread the word that pointing lasers at aircraft is dangerous and illegal, as incidents in the area greatly diminished.”
The editorial then noted that despite this local decrease, there are “still about 7,000 reports of lasers aimed at aircraft each year [in the U.S.].”
The article concluded with the suggestion to “[r]equire a warning about the five years in prison and $250,000 fine on every laser for sale (on the packaging or on a handout to the buyer).”
From the Press of Atlantic City
The bill was introduced February 27 2017 after a number of laser pointer incidents in the state.
Although there is a similar federal law (5 years in federal prison and fine up to $250,000), the legislators who introduced the Michigan bill said the state can now prosecute, whether or not federal officials choose to prosecute. Prior to passage of the law, state or local law enforcement could not arrest laser perpetrators unless they committed a separate offense under state or local law.
The bill makes it illegal to intentionally aim “a beam of directed energy emitted from a directed energy device at an aircraft or into the path of an aircraft or a moving train.” The bill defines “directed energy device” as “any device that emits highly focused energy and is capable of transferring that energy to a target to damage or interfere with its operation. The energy from a directed energy device would include the following forms of energy:
-- Electromagnetic radiation, including radio frequency, microwave, lasers, and masers.
-- Particles with mass, in particle-beam weapons and devices.
-- Sound, in sonic weapons and devices.”
As with the federal law, there are exceptions in the bill for FAA and DOD authorized users, and for persons using a laser emergency signaling device to send an emergency distress signal.
There were actually two bills introduced by Republican state representatives Laura Cox and Tom Barrett. House Bill 4063 made it a crime to aim directed energy at aircraft or a moving train. HB 4064 also adds the laser provisions to sentencing guidelines.
HB 4063 originally passed the House March 16 2017 by a vote of 107-1. An amended version passed the Senate April 25, 111-37 and passed the House May 2, 105-2. It was sent to the Governor on May 4.
From the Detroit News (March 16 story, May 2 story), U.S. News and World Report, and the Michigan legislature website page for HB 4063.
Michael Reeves’ tongue-in-cheek narration states “…it’s really doing its job of lasering me in the eye which is the real innovation here. To my pleasant surprise I found that this machine also solved another of society's problems; the fact that you're not seeing little tiny dots in your vision all day long. I know where to go when I wanted to see little dots, now I can't focus on anything.”
The laser in the video looks substantially more powerful than the U.S. FDA limit of 5 milliwatts. (However, it can be difficult to estimate laser power from a video. For example, the camera may be more red-sensitive than human eyes which might explain why the beam seems so large and bright.)
Anyone doing this should be aware of the problem of laser pointers often being more powerful than the label states, and more powerful than the U.S. limit of 5 mW.
Fortunately for Reeves’ vision, the laser is mechanically aimed by two devices that move it left-right and up-down. This makes the aiming relatively slow and lagging the facial recognition, so the beam can be dodged much of the time. He moves to avoid the beam, and is hit in or very near to an eye about once every couple of seconds.
The screenshot below shows the camera (blue arrow) and a laser module mounted on two servos (yellow arrow).
As befits a student budget, the housing is an old pizza box. Reeves wrote the facial recognition and aiming program in C#, using Emgu CV, a .Net wrapper for the OpenCV computer vision library.
In about a day, the video received 80,000 views as well as being featured at tech blog The Verge.
From The Verge. Original YouTube video here.
UPDATED April 19 2017: Michael Reeves told C/Net “My eyes are fine. A lot of people seem concerned about that, which I admit is warranted. I used a 5 mW laser diode, and never had it in my vision for more than a fraction of a second."
It can be integrated into visors, goggles or other eyewear. Below is an “early prototype” showing detectors above the nose bridge and batteries on one earpiece:
They began work on the “laser dazzle visor” in 2014 and hope to start selling to military, airline suppliers and emergency services in 2018.
From Folium Optics and the Express
Note: Previous stories and charts elsewhere on LaserPointerSafety.com may have slightly different figures for some years. This is due to CAA updating numbers after a “SDD Coding Backlog”. The numbers above are all as reported in February 2017 by CAA.
The 1,258 home incidents in 2016 represent a 12.6% decrease from the 1,440 home incidents that occurred in 2015.
Similarly, the 274 overseas incidents in 2016 represent a 22.8% decrease from the 355 overseas incidents that occurred in 2015.
Here are the 1,258 home incidents in 2016, month-by-month:
CAA listed the top 10 locations reporting laser incidents for 2016. It is not known whether these incidents all occurred at or near the indicated airports, or whether this also includes incidents (such as helicopter strikes) that occurred elsewhere but which were tallied to the closest airport.
As in the United States, the majority of laser illuminations were reported to be green. The figures below are for U.K. incidents; the color distribution is roughly the same for overseas incidents as well.
From a February 2017 report by the Civil Aviation Authority. This report contains additional details such as a monthly breakdown for each year 2009-2016, and for each of the top 10 home and overseas locations in 2016.
Canada: Airbus agrees to commercialize anti-laser windscreen material; eliminates need for laser protective eyewear
The film is not designed to fully block the laser light. It will significantly reduce the glare and temporary flash blindness effects that can occur when a laser is aimed at an aircraft cockpit. This in turn reduces the potential hazard of a laser illumination.
The announcement was made at a February 21 2017 press conference. In a press release kit photo, MTI’s founder and CEO, George Palikaras, demonstrated the laser-reflecting properties by holding up a windscreen that included MTI’s metaAIR film:
The press release did not indicate a time frame for introduction of the windscreens into service, nor details such as an estimated cost, or aircraft to be outfitted. An Airbus spokesperson did say that there are applications beyond the company’s commercial aircraft division. Palikaras said that metaAIR “can offer solutions in other industries including the military, transportation and glass manufacturers.”
For more detailed information on Airbus’ and MTI’s plans, see this page which includes interview Q&A questions with George Palikaras a few days after the February 21 press conference.
UPDATED April 14 2017: Metamaterials Technologies Inc. closed an $8.3 million round of funding. This will be used to support commercialization of the windscreen film and to add needed staff. MTI can produce metaAIR sheets 80 cm wide by 100 cm long, which is sufficient for standard cockpit windows that are 60 cm wide. However, the process is currently semi-automated and needs to be fully automated. MTI is also looking for new headquarters. From the Chronicle Herald.
UPDATED July 5 2017: MTI will be making its metaAIR anti-laser windscreen film available to non-Airbus aircraft, through aviation parts supplier Satair. An interview with George Palikaras goes into details.
Metamaterial Technologies Inc. issued a press release dated February 21 2017, which is reprinted below.
Click to read more...
The system is intended for use in cockpits, and is self-contained — it does not need to interface with any aircraft instruments. For location, altitude and orientation data, it has a GPS and a 3-axis magnetic compass.
A laser is detected by a camera sensor, currently with 1024 x 1024 pixel resolution. The camera detects the bright “bloom” from a direct or near-direct laser illumination (left image, below). To distinguish laser light from a bright non-laser light such as the sun, it looks at surrounding pixels to see whether they saturate the green channel of the sensor. (The system currently looks only for green laser beams since those represent over 90% of FAA-reported laser incidents. But future versions could look for other color laser beams as well.)
As the laser aims away from the camera, the bright center of the laser is still visible (right image, above). The system then looks at the center of the bright area to find the pixel location. Knowing the camera’s orientation, location and altitude, a Raspberry Pi computer running a Python program written by Hough calculates the approximate location. This is automatically sent via text message to pre-programmed recipients which could include law enforcement.
In ground testing on a slope, at a relatively short distance, the error was 15 meters. As the photo diagram shows, the system was successful in determining an approximate distance and location.
Hough notes that the system is a low-cost proof-of-concept. Suggested improvements include “more precise location sensors [that] would improve target location accuracy. Tapping into the high quality compass and GPS sensors on a commercial aircraft, for example, would drastically improve the ability of the system.” He also stated that smartphones include all the equipment needed: camera, compass, GPS, processor and display. So it should be possible to make a smartphone application to accomplish the same task.
From “Detection and Location System for Laser Interference with Aircraft”, December 2016. Thanks to Nate Hough for bringing this to our attention and allowing us to host the PDF. Note: A similar system, which does not calculate the laser source location, is the Laser Event Recorder.
It is more stringent than the current law which 1) only applies to aiming at aircraft, 2) requires prosecutors to prove that the perpetrator endangered the aircraft and 3) has a fine of up to £2,500 (USD $3,112).
The new law will 1) apply to a wider variety of transport modes including automobiles, 2) require prosecutors only to prove that the laser was directed towards the transport vehicle and 3) will also add the prospect of prison time to the potential punishment. The exact new fines and prison terms were not stated in the DfT announcement.
Click to read more...
The data shows that pilots reported eye effects or injuries in less than 1% of laser illumination incidents. Flashblindness was the most-reported effect, followed by “Pain, burning or irritation in eye.” Blurriness was also frequently listed, along with unspecified “eye injury.”
In 20% of eye effect/injury cases, the person affected sought medical attention.
From the FAA weekly Laser Report
Here is the same data, arranged to show the average number of incidents per day:
As in previous years, green was by far the most-reported color:
An October 2016 U.S. Food and Drug Administration proposal would allow the manufacture of laser pointers only in the 610-710 nanometer wavelength (orange-red to deep red). This chart shows the 2016 laser illuminations arranged according to those colors:
Eye injuries or effects
There were 24 laser illumination incidents in 2016 where eye effects or injuries were listed. This is 0.32% of the total number of incidents. These are the effects listed; the total adds up to more than 24 due to multiple effects in some cases.
From the FAA weekly Laser Report, January 9 2017 with data January 1 - December 31 2016
A December 14 2016 article in the Wall Street Journal describes a price war between sellers of the updated Star Shower Motion, which adds movement to the laser dots.
The list price from Telebrands was $49.99. It appears they lowered the price to around $35, then Amazon and other retailers lowered their prices to $31-33. The wholesale price of the Star Shower Motion is around $30, meaning that Amazon is barely making money on selling this laser projector.
For consumers this may be good news. However, Telebrands is watching a major distributor undercut its own pricing. And, the lower prices are putting more laser projectors in the hands of consumers.
From the Wall Street Journal (subscription required). Summary at Consumerist. LaserPointerSafety has run previous stories about he Star Shower, since they first became popular in 2015. Click for stories about aviation incidents and for general stories about the lights and their potential hazards.
This was the sole recommendation resulting from a September 5 2015 incident when the two pilots in a Ryanair flight, on approach to Porto Airport, were illuminated by laser light. The pilot flying was distracted and had to use his hand to shield his eyes. The pilot monitoring had temporary flash blindness lasting a few seconds. This contributed to the aircraft’s approach being “unstable.” The pilots executed a missed approach and did a go-around for a second approach; the plane then landed safely.
Portuguese officials told the Irish investigators that there is no law in Portugal against aiming a laser at an aircraft.
In 2014, there were 294 laser incidents reported in Portugal; in 2015 there were 264 such incidents. In 2014, 107 of the incidents occurred at Porto Airport; in 2015 there were 105 incidents at the airport.
From the Irish Examiner
LIDAR sensors on self-driving cars work by sending laser light — usually non-visible infrared beams — in order to detect objects’ shapes and distances. According to Jonathan Petit, there is a problem: “Anybody can go online and get access to this, buy it really quickly, and just assemble it, and there you go, you have a device that can spoof lidar.”
The LIDAR can be made to falsely perceive objects that do not exist, or to ignore objects that are actually present.
A simple attack would cause the self-driving car to run into another car or an object. A more sophisticated attack could cause the car to choose a different path. Petit says “[this] means that then the risk could be ‘I’m sending you to small street to stop you and rob you or steal the car.’”
The Business Insider article is unclear but it appears the $43 is for equipment in addition to the cost of the laser pointer. Also, although the article did not say, it may be that the laser pointer needs to emit infrared light instead of, or in addition to, visible light.
Petit is a post-doctoral researcher at the University of California, Berkeley.
From an article in Business Insider, posted December 15 2016. The detailed article also discusses many other non-laser techniques of hacking self-driving cars.
The full text of the statement is as follows:
“The FAA’s concern is that lasers -- regardless of the source -- not be aimed at aircraft where the beams can threaten the safety of a flight. Consumers who buy laser light displays should take precautions to make sure that the lights are hitting their houses and not shining off into the sky. In situations such as this, we would start by asking the person to either adjust them or turn them off. For more information on lasers, please go to www.faa.gov/about/initiatives/lasers/“
From an FAA Eastern Division email to LaserPointerSafety.com, and from the Boston Globe. LaserPointerSafety has run previous stories about Christmas and holiday laser lights such as the Star Shower, since they first became popular in 2015. Click for stories about aviation incidents and for general stories about the lights and their potential hazards.
The Cassini K-9 “Day and Night Vision Binoculars” are normal magnifying binoculars (for day vision) with a green laser light added between the lenses to illuminate objects for “night vision.” Holding down a button activates a 532 nanometer laser, said to be less than 5 milliwatts, with a spot diameter of 4 meters at a distance of 50 meters.
Looking through standard night vision devices, the user typically sees a green glow from the image intensifier that allows enhanced vision in the dark, without any visible light being added to the scene. In contrast, the Cassini K-9 emits very visible green laser light, simulating the look of a night vision device without requiring any other change to the binoculars.
The product manual warns “Please note the green laser is a device and can be harmful if used improperly, and laser radiation can be harmful to the eyes. Do not look directly into the laser beam output aperture during operation. Laser light when reflected off a mirror like surface can cause serious damage and injury. Since the Laser binocular is not a toy, please keep out of reach of children.”
The manual also includes this cautionary graphic:
Representative prices range from $94 (Amazon) to $160 (Sharper Image). At Amazon, the product has 3.5 out of 5 stars from 13 reviewers. Amazon reviewer comments include:
- “Didn't realize it would have the bright beam of green light...Very grainy, hard to make thing out….”
- “If you are looking for something to view the dark, without being detected, this is not the one. The green laser is visible!! That's, like you can see it in the dark! The range is not up to par. The beam is cone shaped and is approximately 2 feet wide at 7 yards, carry that out to 100 yards, my scope works better at night with my mag-light.”
- “Much better than reviews indicated. Not for tactical use but adequate for bird watching or varmint spotting.”
From Amazon.com and Sharper Image
Researchers at Stanford University wanted to get data on how much lift a bird generates. To monitor the wing wake and vortices, they used a laser beam spread by a lens into a plane of light. The light source was a Litron brand double-pumped Neodymium-doped yttrium lithium fluoride (Nd:YLF) laser. The light was green at 527 nanometers, and had a pulse repetition rate of 1 kHz.
A non-toxic mist in the air illuminated the light sheet, just like theatrical fog used at concert laser light shows. As the bird flew through the light, the mist scattered and showed the air patterns, in a technique called “particle imaging velocimetry” or PIV.
Bird-sized goggles were used to prevent any harm to the bird’s eyesight. The lenses came from human laser safety glasses and had an optical density of 6, meaning that they transmitted only 0.0001% of the laser light. The frame was 3D printed and was held on by veterinary tape. The goggles weighed 1.68 grams, which is roughly 6% of the bird’s body weight (equivalent to 9 pound glasses on a 150 lb. human).
Before beginning the series of experiments, the researchers trained four parrotlets “through many small stress-free steps of habituation.” After “several months of effort” with the birds, only one — a parrotlet named “Obi” — voluntarily flew with the laser goggles. According to the researchers, “[a]ll training and experimental procedures were approved by Stanford's Administrative Panel on Laboratory Animal Care.”
Twelve cameras were used. Four high-speed stereo cameras were for PIV particle motion recording and recorded 4000 frames per flight. Eight cameras were for recording Obi’s wing and head kinematics as it flew from one perch, through the laser light plane, to a landing perch.
The results give “the clearest picture to date of the wake left by a flying animal.” Unexpectedly, the wing tip vortices did not stay stable as happens with aircraft, but instead broke up quickly and violently. This had not been predicted by any previous models.
From a Stanford University news story, picked up by numerous websites and news outlets including Popular Mechanics, NBC News, The Verge, Optics.org and many others. The results were published December 6 2016 in the journal Bioinspiration & Biometrics, volume 12, number 1. Thanks to Drs. Ronald K.A.M. Mallant, MSc. for pointing out an error in our description of OD 6 density; the error has been corrected.
LERapp was developed a few years ago by Dr. Craig Williamson of the U.K. Defence Science and Technology Laboratory (Dstl). The app uses the smartphone camera; when a laser or bright light event is detected, the app makes a digital record. This includes a picture of the event, the GPS location of the phone, the user’s heading, the date and time, and laser parameters such as the beam color and estimated irradiance. A March 2013 paper, presented by Dr. Williamson at the International Laser Safety Conference, describes the app in more detail.
Screenshot from the 2013 version of the Laser Event Recorder app
As far as LaserPointerSafety.com can determine, the app was never made publicly available such as being put on an app store.
To commercialize LERapp, in December 2016 it was licensed to Profound Technologies, Inc. of Warner Robins, Georgia, who will be doing further development and marketing in major regions such as the U.S., U.K. and Europe. Profound’s president Randall Fitzgerald said that there are two planned versions.
One version will be a free or low-cost basic app that has the current features of LERapp. Profound will also be developing a central database where laser incident reports will be automatically filed, which then can be pushed out to other users of LERapp such as nearby pilots. These notifications would be available in a higher-cost version, or perhaps the notification feature would be a “freemium” add-on to the basic app.
The app will not directly be able to locate the laser’s location — the only geographic information stored is the GPS location and heading of the smartphone at the time of the incident. However, having a photo of the laser illumination may allow law enforcement to locate landmarks or street patterns. Also, Profound is considering future versions which could triangulate a ground location or area based on multiple illumination events reported to the database within a short timespan.
LERapp currently runs on Apple’s iOS operating system for iPhones. There is as yet no public release schedule for the basic or database versions. At the time of Apple App Store release, Profound also intends to have an Android-compatible version available.
From a Profound Technologies press release dated December 4 2016 and a December 8 telephone interview with Randall Fitzgerald. LaserPointerSafety.com previously ran a story about the Dstl version of the LERapp in March 2013.