Lidar scanning system

Details Lidar scanning system Lidar scanning system

1990-03-23

1991-04-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 5, G01N 2186

Patent

active

050067214

ABSTRACT:
A LIDAR scanning system having a rotating multifaceted polygon mirror for transmitting modulated light from one of its facets to a surface. Diffuse light reflected off said surface is received by another facet of the polygon mirror and reflected to a photo detector. The phase difference between the transmitted and received light is then used to compute the range of the surface from the scanning system. The intensity of the returned light is used to create a gray scale image of the surface. The use of separate optical paths for the transmitted and returned light, and a small scanned field of view results in an improved signal-to-noise ratio.

REFERENCES:
patent: 3901597 (1975-08-01), White
patent: 3914596 (1975-10-01), Finkel et al.
patent: 4687325 (1987-08-01), Corby, Jr.
patent: 4926050 (1990-05-01), Shemwell
Machine Vision and Applications, 1988, Springer-Veriag New York Inc., pp. 127-152, "Active, Optical Range Imaging Sensors".
Applied Optics, vol. 23, No. 21, Nov. 1, 1984, "Laser Range Finder Based on Synchronized Scanners", pp. 3837-3844.
SPIE, vol. 1007, Mobile Robots III, 1988, "Real Time Imaging Rangefinder For Autonomous Land Vehicles", pp. 349-356.

Affiliated with

Also associated with

Rating

Lidar scanning system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lidar scanning system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lidar scanning system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2036593