Providing a representation of information stored in a hologram

Details Providing a representation of information stored in a hologram Providing a representation of information stored in a hologram

1975-12-12

1977-10-18

Sikes, William L.

G06G 900

Patent

active

040543579

ABSTRACT:
A holographic recording of a plurality of rows of informational elements, which may represent a binary number, is successively illuminated by each of a plurality of light sources, where the number of light sources equals the number of rows of elements. In response to the successive illumination, a holographic reconstruction of the elements is projected upon photodetectors disposed along a line in a projection plane. The illumination may be instead by a deflected beam having an angle of incidence with the recording which changes at a vertical scan rate. In response to the deflected beam, a holographic reconstruction of horizontal lines of the elements are successively projected upon the photodetectors.

REFERENCES:
patent: 3885143 (1975-05-01), Ishii
patent: 3887276 (1975-06-01), Clay et al.

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