Photodetector filter structure

Details Photodetector filter structure Photodetector filter structure

1975-06-24

1976-08-24

La Roche, Eugene

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250216, 350311, 350316, G01J 334, G01J 350

Patent

active

039768759

ABSTRACT:
A transparent dome formed from a segment of a spherical shell of uniform thickness has an optical filter on its surface. A photodetector is positioned on the concave side of the dome so that light rays passing through the dome, normal to its surface, will fall on the center of the photodetector.

REFERENCES:
patent: 2798943 (1957-07-01), Prideaux
patent: 3278752 (1966-10-01), Brixner
patent: 3567948 (1971-03-01), Oke et al.
patent: 3766080 (1973-10-01), Swinehart et al.

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