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UK: Professor develops laser-absorbing strip for police face shields; "several thousand" used in Northern Ireland

The Police Service of Northern Ireland (PSNI) has acquired “several thousand” tinted strips for use on riot control helmet face shields, according to a November 25 2015 article in Police Oracle. If an officer is faced with a protester equipped with a laser pen, the officer can lower his or her head so they are looking through the “absorbing filter strip”, to reduce the glare and potential eye damage from the laser light.

The strip was developed by John Tyrer of Loughborough University, professor of optical instrumentation. He was commissioned by the Home Office and the PSNI who were concerned about increasing numbers of demonstrators aiming laser pens at police.

The light distracts officers and breaks their positions, according to Tyrer. The orange-tinted film is low-cost and simple to apply.

Tyrer laser absorbing filter strip - clear
Tyrer demonstrates how light from a laser pen goes through the clear part of the face visor, causing glare and potential eye injury to an officer.

Tyrer laser absorbing filter strip - absorbing
But if the officer tilts his or her head down so the laser goes through the strip, laser light is absorbed and does not present a hazard.


Testing by Public Health England, and real-life usage in Northern Ireland, showed the anti-laser strip to be “very effective”.

Tyrer has also suggested that the same film applied to glasses can protect pilots during takeoffs and landings from any laser activity that might be occurring.

From the Loughborough News Blog and Police Oracle