Photoelectric rotary encoder

Details Photoelectric rotary encoder Photoelectric rotary encoder

2005-12-06

2005-12-06

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S231140, C341S013000

Reexamination Certificate

active

06972402

ABSTRACT:
A photoelectric rotary encoder includes a light source that emits a light beam, a returning section that returns the emitted light beam to a direction opposite to an emitting direction of the beam, and a photodetector that is disposed on a substrate on which the light source is disposed and that detects the returned light beam via a disk having a detection pattern section. The photoelectric rotary encoder detects rotational displacement of the disk based on the detected returned light beam. In this photoelectric rotary encoder, an optical element that lets a stray beam component of the light beam from the light source escape via a side surface of the optical element, is disposed in front of the substrate on which the light source and the photodetector are disposed. The optical element covers the substrate and integrates the optical element and the substrate.

REFERENCES:
patent: 4152589 (1979-05-01), Mitchell
patent: 4650995 (1987-03-01), Tokunaga et al.
patent: 4769537 (1988-09-01), Taillebois et al.
patent: 6803560 (2004-10-01), Okumura et al.
patent: 56-046403 (1981-04-01), None
patent: SHO 64-13163 (1989-01-01), None
patent: 08-068665 (1996-03-01), None
patent: 11-153702 (1999-06-01), None

Affiliated with

Also associated with

Rating

Photoelectric rotary encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3466880