Distance measuring device

Details Distance measuring device Distance measuring device

1998-05-01

1999-09-28

Font, Frank G.

Optics: measuring and testing

By polarized light examination

With light attenuation

356372, 356374, 356376, G01B 1114, G01B 1100, G01B 1124

Patent

active

059597348

ABSTRACT:
A distance measuring device having an improved control performance in a compact body by simplifying a structure for scanning a laser beam and a method of controlling the scanning. The device has a mirror for scanning an emitted laser beam, an axis around which the mirror is swung, a permanent magnet which swings along with the mirror, a core disposed opposite to the permanent magnet, a coil provided in the periphery of the core, a Hall element for detecting a swing angle of the mirror, and a circuit for controlling swing motion with a signal derived from a swing waveform formed in a predetermined shape in order to control a current in the coil, and a control signal formed by a controlled variable calculated from a deviation between a predetermined position of the mirror and a detected position.

REFERENCES:
patent: 5461478 (1995-10-01), Sakakibara et al.
patent: 5847833 (1998-12-01), Yokoyama et al.

Affiliated with

Also associated with

Rating

Distance measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-709732