Recording a synthetic focused-image hologram on a thermally defo

Details Recording a synthetic focused-image hologram on a thermally defo Recording a synthetic focused-image hologram on a thermally defo

1977-08-08

1979-11-20

Corbin, John K.

350 384, 350162R, 350360, G02B 2700

Patent

active

041748816

ABSTRACT:
A synthetic focused image hologram of a white light image is recorded as variations in the depths of grooves of a diffraction grating in a layer of thermoplastic material located on a layer of photoconductive material. The thermoplastic layer is manufactured with initial, uniform, shallow grooves of the diffraction grating. A voltage is applied across the layers to deposit a uniform charge, a white-light image is projected on the thermoplastic layer, the layers are recharged and the thermoplastic layer is heated, whereby the initial shallow grooves are selectively deepened in accordance with the image.

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