Light aperture for a lenslet-photodetector array

Details Light aperture for a lenslet-photodetector array Light aperture for a lenslet-photodetector array

1981-03-30

1984-01-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250578, 250237R, 350167, H01J 314, H01J 4014

Patent

active

044255012

ABSTRACT:
An opaque mask having a plurality of apertures therein for use in an auto focus circuit which includes a plurality of lenslets formed in a transparent member and a printed circuit chip which includes radiation responsive detector areas and a circuit area, the mask permitting radiation to pass through the lenslets and be focused on the detector areas but preventing light from passing through transparent areas adjacent the lenslets and striking the circuit area.

REFERENCES:
patent: 2795705 (1957-06-01), Rabinow
patent: 2876099 (1959-03-01), Schenk
patent: 3018313 (1962-01-01), Gattone
patent: 3819940 (1974-06-01), Laws
patent: 3873829 (1975-03-01), Evrard et al.
patent: 4055761 (1977-10-01), Shimomura
patent: 4185191 (1980-01-01), Stauffer
patent: 4230941 (1980-10-01), Stauffer
patent: 4230942 (1980-10-01), Stauffer
patent: 4246476 (1981-01-01), Stauffer
patent: 4249073 (1981-02-01), Stauffer
patent: 4250377 (1981-02-01), Wilwerding
patent: 4254330 (1981-03-01), Stauffer et al.
IBM Technical Disclosure "Modular Matrix Photodetector" vol. 13, No. 3, Aug. 1970, p. 699.

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