Distance measuring device using position sensitive light detecto

Details Distance measuring device using position sensitive light detecto Distance measuring device using position sensitive light detecto

1995-04-28

1997-07-01

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

2502016, G01C 300, G03B 300, G02B 704

Patent

active

056443854

ABSTRACT:
A distance measuring device includes a light emitting element which emits light toward an object to be distance measured. A distance to the object is computed based on photo-currents outputted from a semiconductor position sensitive light detector upon which the light reflected from the object is incident. Background light components coming from a background of the object is detected and canceled from the output obtained from the position sensitive light detector, and position information is outputted which is represented by temperature-dependent variables. Therefore, computation of the distance to the object is not affected by temperature.

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patent: 4521106 (1985-06-01), Lambeth
patent: 4761546 (1988-08-01), Ikari et al.
patent: 5136148 (1992-08-01), Nonaka

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