Distance detecting apparatus

Details Distance detecting apparatus Distance detecting apparatus

1988-09-23

1990-07-03

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, 354408, G01C 300, G01C 500, G03B 300

Patent

active

049385887

ABSTRACT:
In a distance detecting apparatus comprising a light receiving sensor PSD which outputs two photo-currents which correspond to the incident angle of reflection of light reflected from an object lit by emitted comprising, an integral capacitor and a pair of logarithmic converters, a shift of the PSD away from the center of the optical axis can be easily compensated by simple electrical adjustment of constant current value of constant current source in a power source shifting circuit connected to one of the logarithmic converters.

REFERENCES:
patent: 4660955 (1987-04-01), Ishida et al.
patent: 4682872 (1987-07-01), Suzuki et al.
patent: 4701048 (1987-10-01), Tokuda et al.
patent: 4796044 (1989-01-01), Amanuma et al.

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