Combination range laser scanner utilizing periodic range switchi

Details Combination range laser scanner utilizing periodic range switchi Combination range laser scanner utilizing periodic range switchi

1997-11-04

1999-11-09

Le, Thien Minh

Registers

Coded record sensors

Particular sensor structure

235455, G06K 710

Patent

active

059797690

ABSTRACT:
A combination range optical scanner includes a short distance laser and a long distance laser. A scan mirror is oscillated by a motor and scans a beam from one of the two lasers across a field of view. A controller turns the two lasers on and off such that both a short distance scan and a long distance scan are automatically performed. The rate at which the controller turns the lasers on and off may be synchronized with the oscillation rate of the scan mirror. A collection mirror may include two facets, integrally formed therewith, where the two lasers are respectively directed toward the two facets.

REFERENCES:
patent: 5200597 (1993-04-01), Eastman et al.
patent: 5744790 (1998-04-01), Li
patent: 5786585 (1995-01-01), Eastman et al.
patent: 5789730 (1996-06-01), Rockstein et al.
patent: 5798512 (1996-10-01), Krichever et al.
patent: 5798516 (1996-05-01), Shreesha

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