Multiple holographic lens

Patent

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Details

350167, G02B 532

Patent

active

044213794

ABSTRACT:
A two step process allows a multiple holographic lens to be recorded with a single exposure. A multiple exposure, non-overlapping holographic fly's eye lens is first prepared with the correct F number spacing. A single collimated beam striking the fly's eye lens results in a multiple refracted beam array which is allowed to interfere with a second reference beam on a photographic plate. The resulting multiple holographic lens will have equal intensity playback beams, no distortion cross product terms, and improved optical efficiency over multiple superimposed exposure lenses.

REFERENCES:
patent: 3405614 (1968-10-01), Lin et al.

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