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UK: BAE Systems can filter 3 laser wavelengths with 70% normal transmission

BAE Systems executive scientist and photonics expert Dr. Mark Bray says the company can filter three wavelengths of light while providing over 70% transmission of visible light. Bray said the interference filter's off-axis performance has been enhanced: "The filter is designed to operate at different angles by curving the filter…."

According to an October 31 2018 story about BAE's anti-laser efforts, "Bray says a lot of work has gone in to developing products that protect pilots from this form of attack; now much of the challenge is about developing the frames to house the filters."

The story also discussed the number of reported laser incidents in the U.S. and U.K. in recent years, concerns about laser use against military aircraft in the East China Sea and East Africa, and Chinese development of dazzling and blinding laser weapons.

It concludes with Bray's discussion of challenges for laser eye protection: "Among them are achieving performance for off axis incidence of laser, a high absorption at the wavelength of interest whilst keeping the transmission high elsewhere, and ensuing they work, something not easily done given the risk to individuals if they don’t work.”

From Air Force Technology