Optically activated exciplex shutter/attenuator
US3981561A · kind A · utility
5Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/104
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device which provides rapid attenuation of incident light, the degree of ttenuation being proportional to the intensity of the light. This system can be used for eye or device protection in sunlight or other situations in which the illuminating source has a spectral output which includes radiation in the 300-400 nm spectral region. The shutter/attenuator can achieve its maximum extinction in less than 100 psec after being illuminated and returns to maximum transmission within 10 nsec after the light is extinguished.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.