Laser and beam intensity modulation system for imagesetting device
US6052216A · kind A · utility
5Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1999 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Jan 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser beam intensity modulation system has a variable delay circuit that is used to control the relative delay in the delivery of a video signal between two cascaded AOM's. This delay circuit is controlled by a delay controller that monitors the intensity modulation of the laser beam to provide feedback control. This system maximizes the rise and fall times of the beam to generate precise beam modulation required for high speed image setters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.