Optical waveguide for an optic sensor

Details Optical waveguide for an optic sensor Optical waveguide for an optic sensor

1993-05-26

1994-06-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022724, H01N 516

Patent

active

053212584

ABSTRACT:
An optical sensor unit is provided which is capable of being manufactured as a small sensor package as a result of a novel housing used to align a sensing element with respect to an incoming optical signal, such as a beam of light generated by an LED or laser. An arcuate internal passage within the housing defines a reflective optical waveguide which is capable of redirecting the light as it travels through the housing, such that mirrors, prisms and collimating lenses are not required. Furthermore, the optical waveguide is an improvement over the use of optical fibers which are bent to form a waveguide, in that losses and mechanical failures associated with sharp bends in optical fibers are avoided.

REFERENCES:
patent: 4554449 (1985-11-01), Taniuchi et al.
patent: 4763398 (1988-08-01), Huizing et al.
patent: 4797549 (1989-01-01), Ho et al.
patent: 4843232 (1989-06-01), Emo et al.
patent: 4930863 (1990-06-01), Croitorin et al.
patent: 4932749 (1990-06-01), Haidle et al.
patent: 5005944 (1991-04-01), Laakmann et al.

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