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    • 21. 发明申请
    • Electron tube
    • 电子管
    • US20070069645A1
    • 2007-03-29
    • US10571007
    • 2004-09-09
    • Hiroyuki KyushimaMotohiro SuyamaSuenori KimuraYasiharu NegiAtsushi FukasawaYoshihiko KawaiAtsushi UchiyamaYasuyuki Egawa
    • Hiroyuki KyushimaMotohiro SuyamaSuenori KimuraYasiharu NegiAtsushi FukasawaYoshihiko KawaiAtsushi UchiyamaYasuyuki Egawa
    • H01J43/04
    • H01J40/16
    • An envelope (2) has a glass bulb body (4) and a cylindrical glass bulb base (5). The glass bulb body (4) includes an upper hemisphere (4a) and a lower hemisphere (4b). The upper hemisphere (4a) is curved in a substantially spherical shape. The lower hemisphere (4b) is substantially curved in a spherical shape and connects the upper hemisphere (4a) and glass bulb base (5). A photocathode (11) is formed on the inner surface of the glass bulb body (4). An avalanche photodiode (APD) (15) is disposed on the glass bulb body (4) side relative to an intersection (S) between an imaginary extended curved surface (I) of the lower hemisphere (4b) within the glass bulb base (5) and an axis (Z). When light enters the photocathode (11), electrons are emitted from the photocathode (11). The electrons are converged at the position above and in the vicinity of the APD (15) by an electrical field in the electron tube (1), so that the electrons enter the APD (15) in an efficient manner and are detected satisfactorily.
    • 信封(2)具有玻璃灯泡体(4)和圆柱形玻璃灯泡座(5)。 玻璃灯泡体(4)包括上半球(4a)和下半球(4b)。 上半球(4a)弯曲成大致球形。 下半球(4b)基本上弯曲成球形并连接上半球(4a)和玻璃球底座(5)。 在玻璃灯泡本体(4)的内表面上形成有光电阴极(11)。 雪崩光电二极管(APD)(15)相对于玻璃灯泡基座内的下半球体(4b)的假想延伸弯曲表面(I)之间的交点(S)设置在玻璃泡体(4)侧上 5)和轴(Z)。 当光进入光电阴极(11)时,从光电阴极(11)发射电子。 电子通过电子管(1)中的电场在APD(15)上方和附近的位置会聚,使得电子以有效的方式进入APD(15)并且被令人满意地检测。