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 &# 39 ; s helmet .