Holographic field lens detector

Details Holographic field lens detector Holographic field lens detector

1973-06-29

1980-01-01

Buczinski, S. C.

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

350 372, 350162ZP, 356152, G01B 1126, G02B 518

Patent

active

041814355

ABSTRACT:
A holographic field lens detector system having an objective lens for focusing incoming light from a distant illuminating source upon a holographic lens positioned at the back focal plane of the objective lens. The aperture of the objective lens is simultaneously imaged on four detectors positioned in back of the holographic lens and on the four sides of holographic lens. The output of opposite pairs of detectors are fed to sum and difference circuits with the output of the sum and difference circuits being supplied to divide circuits to provide X and Y position information for the illumination on the holographic lens.

REFERENCES:
patent: 3375750 (1968-04-01), Ellis et al.
patent: 3478219 (1969-11-01), Nutz
patent: 3701602 (1972-10-01), Bergin et al.
Sincerbox, IBM Tech. Discl. Bulletin, 8-1967, pp. 267, 268.

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