Parabolic light emitter and detector unit

Details Parabolic light emitter and detector unit Parabolic light emitter and detector unit

1981-09-14

1984-08-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

362800, 313500, H01J 3912

Patent

active

044671938

ABSTRACT:
A parabolic light emitter incorporates a solid state light emitter embedded in a transparent body formed with one planar surface and an opposing surface formed as a paraboloid, the outer surface of which is coated with a light reflecting material. In one embodiment, a reflective member is interposed between the light emitter and the planar surface.

REFERENCES:
patent: 2855523 (1958-10-01), Berger
patent: 3821590 (1974-06-01), Kosman et al.
patent: 3856127 (1974-12-01), Halfon et al.
patent: 3944815 (1976-03-01), Beckmann et al.
patent: 4050444 (1977-09-01), Dolamore
patent: 4143394 (1979-03-01), Schoberl
patent: 4267443 (1981-05-01), Carroll et al.
patent: 4267486 (1981-05-01), Thillays
patent: 4310756 (1982-01-01), Sick et al.
patent: 4320442 (1980-03-01), McCamy
patent: 4387367 (1983-06-01), Fisher

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