Laser Eye Protection Visor Using Multiple Holograms.
DEPARTMENT OF THE NAVY WASHINGTON DC
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This patent discloses 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 fringe 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 aviatiors helmet.
- Protective Equipment