Method and apparatus for laser beam drift compensation
US5315111A · kind A · utility
13Cited by
11References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Oct 15, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for laser beam drift compensation. A portion of the laser beam is split off and focused onto a photocell through a reticle. As the laser beam scans the reticle, the actual position of the laser beam is determined and compared with its anticipated position. Compensation is made for any deviation in the beam position in a closed-looped manner to provide accurate optical alignment of the laser beam to the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.