Optical switch and optical keyboard utilizing the same
US4836636A · kind A · utility
34Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Nov 9, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3582
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical switch having a pair of optical fibers which has a stopper projected on the inner surface of a housing, the paired large diameter optical fibers being formed at the ends thereof, inserted into the housing and contacted with the ends thereof opposed on the same axis with both ends of the stopper at a predetermined interval between relative end faces thereof, and a light shielding plate disposed telescopically in or out between the end faces of the optical fibers in the housing for conducting or interrupting an optical path over both the optical fibers, and an optical keyboard utilizing the optical switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.