Light distribution system for optical encoders
US4342908A · kind A · utility
34Cited by
11References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1980 |
| Grant date | Aug 3, 1982 |
| Priority date | — |
| Expiry date | Aug 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/282
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A light distribution system for optical encoders includes a light guide plate and a light input coupler for distributing input incident radiations into the light guide plate as a flat distributed beam of beam segments intercepted by a pattern of discrete light output couplers reflecting narrow output beams for providing a uniform pattern of encoding illuminations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.