Immersed reflector quadrant detector

Details Immersed reflector quadrant detector Immersed reflector quadrant detector

1976-11-16

1978-05-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250203R, 350293, H01J 314

Patent

active

040925315

ABSTRACT:
There is disclosed a quadrant detector which is characterized by an optical reflector immersed in a high refractive index material to increase the field of view of the detector. The immersed reflector divides the incoming radiation and directs varying portions of this radiation to four separate immersed detectors. The device thereby achieves an increased field of view for proportional operation of a quadrant detector. The high index material reduces the spread of the incoming rays and the ray bundles can then be collected by a much smaller detector than would be required by a conventional quadrant detector with the same field of view. Sensitivity is increased and the need for gimbals is often eliminated.

REFERENCES:
patent: 3478219 (1969-11-01), Nutz
patent: 3654475 (1972-04-01), Montpas
patent: 4015120 (1977-03-01), Cole

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