Device for determining the position of a radiation beam
US4749849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0916
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a position-sensitive radiation detector having a semiconductor body which at least in the operating condition comprises a high-ohmic zone (11) between two radiation-sensitive diodes (6) provided with connection electrodes (9), a high-ohmic zone (11) between two semiconductor zones (6) provided with connection electrodes (9), can be apparently centered by varying the voltages at the connection electrodes (9) in such a manner that the photocurrents through the diodes (6) are the same. The signals derived therefrom can be supplied to measuring and control systems for, for example, optical reading and writing apparatus and other measuring apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.