Optical cosine transform system

Details Optical cosine transform system Optical cosine transform system

1980-05-29

1982-10-12

Arnold, Bruce Y.

Boots, shoes, and leggings

350358, G06F 756, G02F 111

Patent

active

043542476

ABSTRACT:
An optical system for performing a cosine transform on an input RF signal is described. The optical system includes a source for emitting a beam of radiation, and an acoustic-optical modulation device disposed in the path of the beam and functioning to modulate at least two spaced-apart spatial portions of the beam with different signals to produce two modulated beams.
A Fourier transfer lens is provided which is disposed in the path of the two modulated beams for combining the two beams, and a detector is disposed in the path of the Fourier transform beam at the focal plane of the Fourier transfer lens.

REFERENCES:
patent: 4126834 (1978-11-01), Coppock
patent: 4308521 (1981-12-01), Casasent et al.
Proceedings of the IEEE, vol. 65, No. 1, Jan. 1977, pp. 143-157, "Spatial Light Modulators", David Casasent.
"Optical Signal Processing", D. Casasent, from Optical Computing, Ed. Springer-Verlag, N.Y.
"Integrated Optic Spectrum Analyzer", M. K. Barnolski et al., IEEE Transaction on Circuits and Systems, vol. CAS-26, #12, 12/79.
D. Psaltis et al., "General Formulation for Optical Signal Processing Architectures", Opt. Eng., Mar./Apr. (1980), vol. 19, No. 2, pp. 193-198.

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