Phase shifter for hologram recording

Details Phase shifter for hologram recording Phase shifter for hologram recording

1977-11-08

1979-03-13

Stern, Ronald J.

350162SF, 350314, G03H 102, G03H 116, G02B 500

Patent

active

041439376

ABSTRACT:
A phase shifter for adding a deterministic phase to an original information to be recorded in hologram. The phase shifter consists of a number of unit cells arranged in a matrix. A set of the unit cells are provided which will cause a certain phase shift to a light passing through each kind of the unit cells so as to distribute the light irradiance of the original information more evenly over the Fourier transformed plane. The invention suggests a solution to make the phase shifter with the unit cells arranged by the deterministic phase distribution.

REFERENCES:
patent: 3604778 (1971-09-01), Burckhardt
patent: 3883232 (1975-05-01), Tsunoda
patent: 4037918 (1977-07-01), Kato
Minami et al., Proceedings of the 1974 International Electro-Optics Conference, Mar. 1974, pp. 125-130.

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