PHOTOSENSOR COVER
To provide a photosensor cover that is suitable as a front cover of a photomultiplier protection case and has ultraviolet transmittivity and pressure resistance.SOLUTION: A photosensor cover (10) has a substantially hemispherical tabular molding of a transparent resin having ultraviolet transmittivi...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a photosensor cover that is suitable as a front cover of a photomultiplier protection case and has ultraviolet transmittivity and pressure resistance.SOLUTION: A photosensor cover (10) has a substantially hemispherical tabular molding of a transparent resin having ultraviolet transmittivity, which protects a light receiving surface of a photomultiplier. At least a parietal region (11T) has a transmittance of light at wavelength 300 nm of 60% or more. It has pressure resistance sufficient to resist break when the whole area of a hemispherical body part (11) is pressurized at 3 MPa pressure.SELECTED DRAWING: Figure 2
【課題】光電子増倍管保護ケースの前部カバーとして好適な紫外線透過性と耐圧性を有する光センサカバーを提供する。【解決手段】本発明の光センサカバー(10)は、光電子増倍管の受光面を保護する、紫外線透過性を有する透明樹脂の略半球状の板状成形体からなり、少なくとも頭頂部(11T)の波長300nmの光透過率が60%以上であり、半球状の本体部(11)の全面を3MPaの圧力で加圧した際に破断しない耐圧性を有する。【選択図】図2 |
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