Distance measuring device

Details Distance measuring device Distance measuring device

1994-08-11

1996-02-20

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

359216, G01C 308

Patent

active

054933889

ABSTRACT:
A distance measuring device of laser beam using type has a laser diode for producing laser beams. A scanning mechanism projects the laser beams against an object and includes a polygon mirror to and by which the laser beams are directed and reflected. A receiver mechanism receives the laser beams reflected by the object. A control unit measures the period required for the laser beams to make the trip around the object. The polygon mirror is so arranged as to be rotated about a first axis and swung about a second axis.

REFERENCES:
patent: 4017146 (1977-04-01), Lichtman
patent: 4733072 (1988-03-01), Lettington
patent: 5006721 (1991-04-01), Cameron et al.
patent: 5200606 (1993-04-01), Krasutsky et al.
patent: 5289001 (1994-02-01), Arimoto et al.
"Three-Dimensional Imaging and Applications", Research Paper, Max Bair et al., Environmental Research Institute of Michigan.

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