Optical encoder having a shade layer made from photosensitive ma

Details Optical encoder having a shade layer made from photosensitive ma Optical encoder having a shade layer made from photosensitive ma

1997-09-04

1999-09-21

Allen, Stephone

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, 356373, H01J 4014, G01B 1114

Patent

active

059557273

ABSTRACT:
A shade layer 35 made from photosensitive material is formed on a surface of a rotational slit disk 3 of an optical encoder 1, and a slit pattern 36 is formed in the shade layer 35. This shade layer 35 is covered with and protected by a protective layer 39 made from such materials as acrylic resin. Accordingly, the slit pattern 36 can be prevented from being touched and damaged by other members. Further, the slit pattern can be prevented from being deteriorated by air. In addition, by giving an appropriate optical property to the protective layer, it is possible to make the optical property of the surface of the rotational slit disk appropriate.

REFERENCES:
patent: 4799798 (1989-01-01), Erb
patent: 5026164 (1991-06-01), Ichikawa
patent: 5067816 (1991-11-01), Ichikawa

Affiliated with

Also associated with

Rating

Optical encoder having a shade layer made from photosensitive ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical encoder having a shade layer made from photosensitive ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical encoder having a shade layer made from photosensitive ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-82534