Holographic angle sensor

Details Holographic angle sensor Holographic angle sensor

1978-04-28

1980-10-14

Buczinski, S. C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356354, 356363, G01B 1126, G01B 902

Patent

active

042278074

ABSTRACT:
A shearing interferometer which includes a laser source, a reflector structure and an interference detection system. The reflector structure is mounted on an object, the angle of which, relative to a reference line, is to be determined. The reflector structure includes a transmission hologram and a retroreflector, wherein the transmission hologram is so constructed and positioned relative to the retroreflector that two or more parallel beams of preselected separation (shear) are produced for each incident beam. The difference in optical path length of a given pair of the parallel beams will vary depending on the object angle, and hence, the interference effect of the given pair of parallel beams will also vary in accordance with object angle. The interference effect is summed at a detector, and then analyzed by a tracking circuit to determine object angle.

REFERENCES:
patent: 3471239 (1969-10-01), Woodson
patent: 3549239 (1970-12-01), Brienza et al.
patent: 3796494 (1974-03-01), Takabayashi

Affiliated with

Also associated with

Rating

Holographic angle sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2098704