Beam alignment apparatus and method usable with projected beam smoke detector systems
US5085508A · kind A · utility
4Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Jan 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical alignment system includes a transmitter of a beam of radiant energy and receiver thereof. Both the transmitter and receiver carry a plurality of light emitting diodes. As the optical alignment between the transmitter and the receiver is altered, the number of diodes which is energized is increased or decreased in response to increasing or decreasing the optical coupling therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.