Laser marking apparatus including an acoustic modulator
US5309178A · kind A · utility
20Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | May 12, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/036
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser marking apparatus includes at least one laser beam source, a multichannel acoustic modulator defining a plurality of at least partially overlapping modulation regions, apparatus for directing at least one laser beam from the at least one laser beam source through the multichannel acoustic modulator such that each laser beam extends across at least two of the at least partially overlapping modulation regions, and imaging apparatus for directing light from the modulator to a laser marking image plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.