Axial led position detector for determining the angular position

Details Axial led position detector for determining the angular position Axial led position detector for determining the angular position

1998-04-17

1998-12-01

Pham, Hoa Q.

Optics: measuring and testing

Angle measuring or angular axial alignment

25023113, G01D 534

Patent

active

058446737

ABSTRACT:
A position detector for determining the angular position of a rotatable element, the detector having a single light source for directing a uniform wide angle field of light in a direction generally along the longitudinal axis of the rotatable element, multiple sector-shaped light detectors aligned circumferentially about the rotatable element to receive light directly from the source, and a light blocker connected to the rotatable element to rotate therewith about the longitudinal axis for periodically blocking portions of the light which impinge upon the light detectors from the light source. The space between the light source and the detectors being essentially free of any object, except for the light blocker, so that the light from the light source can impinge directly upon at least those portions of the detectors which the light blocker is not blocking, without passing through any other object. A linear output of each of pairs of connected detectors being utilized to provide a reliable measurement of the angular position of the rotatable element.

REFERENCES:
patent: 3480788 (1969-11-01), Barbieri et al.
patent: 4056722 (1977-11-01), Ray
patent: 4207463 (1980-06-01), Iyeta
patent: 4864295 (1989-09-01), Rohr
patent: 5235180 (1993-08-01), Montagu
patent: 5671043 (1997-09-01), Ivers
Jean Montagu & Al Bukys, "Moving Magnet Galvanometer Scanners A New Generation," Presented at the Space Microdynamics and Accurate Control Symposium, Dec. 1, 1992.
6800/CB6588 Mirror Positioning System Instruc. Manual, Cambridge Technology, Inc., Watertown, MA, 1989-Feb. 1, 1994, pp. 9-18 (complete pub. avail in file of U.S. Patent No. 5,671,043).

Affiliated with

Also associated with

Rating

Axial led position detector for determining the angular position does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Axial led position detector for determining the angular position, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axial led position detector for determining the angular position will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2399821