Method and apparatus for detecting laser light
US5486690A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Aug 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser light detector is provided which can be used to detect pulsed laser light that is produced by a rotating laser light source on a construction job site. The laser light detector provides an easily-read display which is indicative of the present level or elevation of the laser light detector with respect to the plane of rotating laser light. The laser light detector has a very large dynamic range, while maintaining a very good signal-to-noise ratio, and can, therefore, be used at both short and long distances from the rotating laser light source. The laser light detector is not dependent upon the energy level received of laser light, or by the spot size of laser light as it reaches the light detectors. The laser light detector is available with several options, including dead band adjustment and audible indication of the elevation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.