Optical scanning apparatus
US5124835A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Jun 20, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning apparatus for scanning a beam of light from a light source over a target surface by a scanning mechanism to form an image on the target surface. The optical scanning apparatus includes an electro-optic lens provided in an optical path between the light source and the scanning mechanism, a plurality of electrodes being provided on top and bottom surfaces of the electro-optic lens for producing an electric field in a direction perpendicular to the direction of the optical path, and a voltage applying unit being connected to the electrodes. The electro-optic lens is made from an electro-optic medium, and has an ingress surface and and egress surface which are ground to exhibit an adequate electro-optic effect. The beam is cast on the target surface to produce a dot having an enlarged diameter in the vertical scanning direction and in the horizontal scanning direction due to the electro-optic effect of the electro-optic medium when the electric field is produced within the electro-optic lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.