Laser scanning apparatus having a scanning beam and a reference beam
US5247174A · kind A · utility
24Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04798
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Laser scanning apparatus comprising stationary optical laser source apparatus for producing a scanning beam and a reference beam, beam delivery apparatus for delivering the scanning beam onto a surface to be scanned, beam position detector apparatus for measuring the position of the scanning beam by sensing the position of the reference beam and fiber optic apparatus for delivering the scanning beam and the reference beam from the optical laser source apparatus to the beam delivery apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.