Laser eye protection visor using multiple holograms

Details Laser eye protection visor using multiple holograms Laser eye protection visor using multiple holograms

1982-10-29

1986-07-22

Arnold, Bruce Y.

350 377, G02B 532

Patent

active

046015337

ABSTRACT:
A diffractive radiation shield for protecting eyes and radiation sensitive devices from laser radiation. The shield utilizes one or more holograms disposed on transparent substrates. These holograms consist of spherical holographic fringes recorded in a dischromated gel with which the substrates are coated. The holographic fringes reflect laser radiation which is normal to their respective surfaces. Reflectivity is maximized for a particular wavelength by proper selection of the fringe spacing. The shield may be configured as a visor for an aviator's helmet.

REFERENCES:
patent: 3633988 (1972-01-01), Farrar
patent: 3930728 (1976-01-01), Pieuchard et al.
Johnson et al., "Laser Eye Protection" Final Tech. Report 8/11/77 to 6/79 Contract or Grant N62269-77-R-0307, prepared for Naval Air Systems Command, Jul. 1979.

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