Photographic imaging

Patent

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Details

35 2, G02B 518, G09C 100

Patent

active

040637999

ABSTRACT:
This disclosure depicts an optical system and method for encoded storage and retrieval, wherein record images are enciphered using incoherent light and wherein deciphering of the coded images is performed in coherent light. More particularly, the disclosure depicts encoding images by inserting a complex phase function in the Fourier transform plane of the imaging means which satisfies the relation:

REFERENCES:
patent: 3156051 (1964-11-01), Hughes et al.
Leith et al.: Journal of the Optical Society of America, vol. 52, No. 10, Oct. 1962, pp. 1123-1130.
Lohmann: "Optical Analog Computer" IBM Technical Disclosure Bulletin, vol. 6, No. 10, Mar. 1964, pp. 56, 57.

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