Photoreflective detector including a light emitting element and

Details Photoreflective detector including a light emitting element and Photoreflective detector including a light emitting element and

1996-08-08

1998-09-22

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Housings

250551, 257 81, G02B 2700

Patent

active

058117970

ABSTRACT:
A photoreflective detector includes a light emitting element; and a light receiving element located so as to receive light emitted from the light emitting element and reflected by an object. The light emitting element and the light receiving element are located to have different distances from the object so as to avoid direct incidence of the light emitted by the light emitting element on the light receiving element.

REFERENCES:
patent: 3862415 (1975-01-01), Harnden, Jr. et al.
patent: 3914309 (1975-10-01), Swensen
patent: 4900910 (1990-02-01), Doi
patent: 5567953 (1996-10-01), Horinouchi et al.

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