Position encoders

Details Position encoders Position encoders

1979-06-19

1981-11-24

Punter, William H.

Optics: measuring and testing

By polarized light examination

With light attenuation

250237R, 356395, G01B 1114, G01B 1100

Patent

active

043021093

ABSTRACT:
An encoder for accurately determining the position of one body relative to another consists of an optical mask carried by one body which moves through the focal point of a concave reflector carried by the other body. The reflector produces an image of the mask in the same plane of the mask and the mask and its image together produce positional information which is utilized by a photo-sensitive detector. The optical pattern of the mask is arranged such that the detector receives constant variations in the levels of illumination as the mask moves.

REFERENCES:
patent: 3524067 (1970-08-01), West
patent: 3591841 (1971-07-01), Heitman et al.
patent: 3983391 (1976-09-01), Clemons
patent: 4097734 (1978-06-01), Erickson
patent: 4180703 (1979-12-01), Cialone et al.

Affiliated with

Also associated with

Rating

Position encoders does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2171996