Device for reconstructing color holographic image

Details Device for reconstructing color holographic image Device for reconstructing color holographic image

1975-07-25

1976-11-23

Stern, Ronald J.

350162SF, G03H 124

Patent

active

039933989

ABSTRACT:
A white light source is employed for illuminating a color image hologram have no effect of diffusion. The primary or first order diffraction light is directed to and focused on a spectrum selecting spatial filter for selecting the spectra which contribute to form a multi-color image reconstructed by the hologram. The spatial filter is provided with a central slit of the width substantially equally to the band width of the spatial frequency peculiar to the object recorded and reconstructed. The spatial filter is further provided with a red filter and a blue filter on the opposite sides of the slit adjacent thereto. By providing the red and blue filters adjacent to the slit of the spatial filter, the brightness of the image reconstructed by the color halogram reconstructing system is markedly enhanced.

REFERENCES:
patent: 3834786 (1974-09-01), Carlsen
patent: 3917378 (1975-11-01), Gale
patent: 3917379 (1975-11-01), Noguchi
patent: 3924925 (1975-12-01), Gale et al.

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