Range finder having a plurality of signal reception means

Details Range finder having a plurality of signal reception means Range finder having a plurality of signal reception means

1991-04-26

1993-05-11

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, G01C 300, G01C 500, G03B 300

Patent

active

052105857

ABSTRACT:
A range finder that measures a distance to an object by projecting a signal and receiving it back has a signal projection device for projecting a signal, a first reception device for receiving a reflected signal of the projected signal which is reflected in a range from a near distance to a far distance, and a second reception device for receiving a reflected signal of the projected signal which is reflected from distant objects, in which range finder the distance measurement accuracy is enhanced and no decrease in an overall distance measurement accuracy occurs.

REFERENCES:
patent: 3443502 (1969-05-01), Harvey
patent: 4065778 (1977-12-01), Harvey
patent: 4655586 (1987-04-01), Stauffer
patent: 4943824 (1990-07-01), Nabeshima et al.
patent: 5060003 (1991-10-01), Kotani et al.

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