Optical shield for image sensing device

Details Optical shield for image sensing device Optical shield for image sensing device

1984-04-04

1986-09-02

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250352, 2505051, 250332, G01J 100

Patent

active

046098208

ABSTRACT:
An image sensing device is improved by an optical shield having a multi-aperture to provide high signal to noise ratio. The improved optical shield is provided with a plurality of shield elements forming a grid-like or cellular structure. With such a structure, the solid angle of the field of view for each sensing element becomes almost the same, resulting in the reduction of "shading". The distance between the heat shield and the array can be reduced, resulting in miniaturization of the device. Each sensing element is not shielded individually, so the pitch of the shield elements can be larger than that of the sensing elements, which allows easier and less costly fabrication of the shield.

REFERENCES:
patent: 3942008 (1976-05-01), Ave et al.
patent: 3963926 (1976-06-01), Borrello
patent: 3996599 (1976-12-01), King
patent: 4027160 (1977-05-01), Duffield et al.
patent: 4360797 (1982-11-01), Fenimore et al.
patent: 4431918 (1984-02-01), White
patent: 4446372 (1984-05-01), Gurnee
patent: 4485305 (1984-11-01), Kuwano et al.

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