Photomultiplier and photodetector including the same
US7115854B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2005 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Jul 25, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J43/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a photomultiplier that can realize a gain adjustment for each of electron multiplier channels respectively assigned to a plurality of light incidence regions in a more compact structure. The photomultiplier has a sealed container, and a photocathode, a dynode unit, and plurality of anodes prepared for electron multiplier channels are housed in the sealed container. The dynode unit is constituted by N (an integer or no less than 3) dynode plates, each provided with an electron multiplier hole for the associated channel, concerning all channels. In particular, the n-th (an integer of no less then 2) dynode plate is constituted by a plurality of control plates, each having an electron multiplier hole for the associated channel, and electrically and physically separated from the others. These control plates are supported in state of being supported, via insulators, by the (n−1)-th dynode plate and the (n+1)-th dynode plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.