Title:
光検出管
Document Type and Number:
Japanese Patent JP4256212
Kind Code:
B2
Abstract:
Since a peripheral part of the sapphire plate 2 is airtightly thermally crimped to an end face (window peripheral part) of a kovar metal tube 1A surrounding a light entering window via a seal ring 7 made of aluminum, a lattice defect is prevented from occurring on the sapphire plate 2 due to diffusion of impurities on the sapphire plate 2. As a result, the generation of phosphorescence or fluorescence from the sapphire plate 2 is prevented in detecting an ultraviolet ray, and dark noise is reduced.
Inventors:
藤松 英樹
鈴木 伸治
鈴木 伸治
Application Number:
JP2003172504A
Publication Date:
April 22, 2009
Filing Date:
June 17, 2003
Export Citation:
Assignee:
浜松ホトニクス株式会社
International Classes:
H01J43/28; H01J40/02; H01J40/16
Attorney, Agent or Firm:
寺崎 史朗
石田 悟
長谷川 芳樹
石田 悟
長谷川 芳樹