Optical signal receiving apparatus with compensation for peripheral light
US4821338A · kind A · utility
96Cited by
6References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1986 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Aug 5, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4246
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved optical signal receiving apparatus useful in optical communication is provided. Peripheral light can be measured and compared to determine if its intensity is above a certain predetermined level. The apparatus can display an indication when the measured intensity is over the predetermined level, such as through an emission at a predetermined wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.