Scanner having horizontal synchronizing signal generator with prism light diameter reducing means
US5084616A · kind A · utility
11Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Mar 14, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04744
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A horizontal synchronizing signal detecting optical system of an optical scanning apparatus includes a light receiving element for receiving light flux deflected by a deflector and converged by a scanning lens outside an effective scanning range. A prism optical system for reducing the diameter of the light flux which is received by the light receiving element at least within a principal scanning direction is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.