Scanning optical system
US5247373A · kind A · utility
10Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1990 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Sep 14, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1018
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A scanning optical system has a drawing light source, a rotary scanning deflector, a scanning lens and a detection device for detecting a rotational position of the scanning deflector. The drawing light source is controlled by a timing control signal generated by a timing control device as a function of drawing data. The scanning optical system may have a transmission scale, a scanning light receiving portion and a diffusion plate disposed between transmission scale and scanning light receiving portion and adapted to diffuse the monitor beam made incident to the scanning light receiving portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.