Mirror-absorber for use in the illumination of transmission holo

Details Mirror-absorber for use in the illumination of transmission holo Mirror-absorber for use in the illumination of transmission holo

1983-10-07

1984-12-04

Corbin, John K.

350277, 350448, 40361, G02B 2702, G02B 1700, G03H 122

Patent

active

044860706

ABSTRACT:
Apparatus for illuminating transmission holograms from the rear with an illumination source located in front of the hologram, comprising a reflector and a light trap adapted to be mounted behind the hologram at a location chosen to reflect light from the source through the hologram as though from a source behind the hologram, while reflecting ambient light from the direction of an observer of the hologram into the trap.

REFERENCES:
patent: 3134021 (1964-05-01), Ploke
patent: 3633989 (1972-01-01), Benton
patent: 3944322 (1976-03-01), Benton
patent: 4070100 (1978-01-01), Akiyoshi
"Physics for Students of Science and Engineering, Part II, Second Edition, by Halliday and Resnick, Published in 1962, p. 946.

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