Laser protection system
US6411451B1 · kind B1 · utility
11Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1990 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Mar 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2001/0285
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention pretains to a device for protecting the human eye by means of a narrow bandwith interference filter which filters out one or more specific wavelengths of light emitted in the form of a coherent, concentrated beam that is laser radiation and in coherent light, an image intensifier for amplifying an image passing through the narrow bandwidth filter to an observable light level, and a neutral density filter which reduces image reflected illuminance to avoid detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.