Information detecting system of scanning type
US5121449A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1990 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Apr 24, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1245
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an information detecting system of scanning type which comprises a substrate formed with an optical waveguide layer, a laser oscillator emitting a laser beam, a SAW type beam deflecting device formed on the optical waveguide layer, a beam irradiating section irradiating a specimen with the laser beam derived from the optical waveguide layer, a controller controlling the frequency of a high-frequency voltage applied to the SAW type beam deflecting device so as to scan the specimen with the laser beam directed from the beam irradiating section, and a detecting section detecting the position and/or the intensity of the laser beam scanning the specimen with respect to the SAW control signal controlled by the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.