Apparatus for reducing, enlarging and projecting image information
US5260728A · kind A · utility
6Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1991 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Jun 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light beam (30) including a random polarization and radiated from a light source, such as laser oscillator (6) is separated into P wave polarization light beam and S wave polarization light beam by a beam splitter 33. After modulated by image information representative of characters to be printed, both the P and S wave polarization beams are merged and the resultant light beam is projected on the surface of a workpiece for marking a pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.