Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1988-03-02
1990-05-15
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356 4, G01C 308
Patent
active
049260502
ABSTRACT:
A distance-measurement system and method for its use. The system includes a transmitter located at one location and a receiver, at least portions of which are located at the second location. The transmitter produces a scanning beam of laser light that is narrow in its scanned direction and broad in the orthogonal direction. The beam is scanned at a substantially constant angular velocity. The receiver has at least a pair of apertures and associated photodiodes held in a predetermined configuration. The receiver measures the time interval between the times at which the apertures are illuminated by the scanning beam. Based on these time intervals, the receiver can calculate the distance from the first location to the second location. The scanned beam can also be polarized and the receiver can include polarization detection and a lateral effect cell to account for relative rotation and tilt of the transmitter and receiver.
REFERENCES:
patent: 4268167 (1981-05-01), Alderman
patent: 4297030 (1981-10-01), Chaborski
patent: 4346988 (1982-08-01), Kimura et al.
patent: 4542282 (1985-06-01), King
patent: 4593967 (1986-06-01), Haugen
Allen Stephone B.
Nelms David C.
Spectra-Physics Inc.
LandOfFree
Scanning laser based system and method for measurement of distan does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanning laser based system and method for measurement of distan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning laser based system and method for measurement of distan will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-622889