Title:
PHOTO-DETECTING TUBE
Document Type and Number:
WIPO Patent Application WO/2004/114359
Kind Code:
A1
Abstract:
The peripheral edge of a sapphire plate is air-tightly bonded by thermocompression to the end surface (window periphery) of a Kovar metal tube (1A) surrounding a light incidence window through a seal ring of aluminum (7), whereby there is no possibility of impurities being dispersed in the sapphire plate (2) to cause photon imperfection. As a result, when ultraviolet light is detected, the sapphire plate (2) is prevented from generating phosphorescence or fluorescence and dark noise is reduced.
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Inventors:
FUJIMATSU HIDEKI (JP)
SUZUKI NOBUHARU (JP)
SUZUKI NOBUHARU (JP)
Application Number:
PCT/JP2004/008358
Publication Date:
December 29, 2004
Filing Date:
June 15, 2004
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
FUJIMATSU HIDEKI (JP)
SUZUKI NOBUHARU (JP)
FUJIMATSU HIDEKI (JP)
SUZUKI NOBUHARU (JP)
International Classes:
H01J40/02; H01J40/16; H01J43/28; (IPC1-7): H01J40/14; H01J43/28
Domestic Patent References:
| WO2003003406A1 | 2003-01-09 |
Foreign References:
| JP2002150928A | 2002-05-24 | |||
| JP2000048743A | 2000-02-18 |
Other References:
See also references of EP 1641021A4
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Ginza First Bldg. 10-6, Ginza 1-chom, Chuo-ku Tokyo 61, JP)
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