Title:
光検出器用高電圧回路
Document Type and Number:
Japanese Patent JP5735321
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a high voltage circuit for photodetector used in a photodetector for photometry which can be made compact while ensuring safety.SOLUTION: The high voltage circuit 10 for photodetector which supplies a high voltage power to a photomultiplier tube (PMT) 20 comprises a photovoltaic unit 11 configured by connecting multiple solar cells 11a electrically in series, and a light source 12 consisting of light-emitting diodes that emit light having a predetermined wavelength for the photovoltaic unit 11. Consequently, the high voltage circuit 10 can be made compact enough to be configured on a semiconductor, and high voltage power can be supplied stably and extremely easily to the PMT 20. Furthermore, since the light source 12 and the photovoltaic unit 11 generating a high voltage can be brought into so-called a photo-isolation state, the high voltage can be isolated extremely easily and reliably.
Inventors:
Mitsuo Ohashi
Application Number:
JP2011069666A
Publication Date:
June 17, 2015
Filing Date:
March 28, 2011
Export Citation:
Assignee:
Spectra Tech Co., Ltd.
International Classes:
H01J43/30; H01J40/06; H01L31/04
Domestic Patent References:
| JP1174230A | ||||
| JP1017483A | ||||
| JP9082999A | ||||
| JP4359855A | ||||
| JP2009080124A | ||||
| JP2007095381A | ||||
| JP2004532383A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office