中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.024 seconds)

    3.
    发明专利
    未知

    公开(公告)号：DE69404079D1

    公开(公告)日：1997-08-14

    申请号：DE69404079

    申请日：1994-04-28

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： KYUSHIMA HIROYUKI ,  NAGURA KOJI ,  HASEGAWA YUTAKA ,  KAWANO EIICHIRO ,  KUROYANAGI TOMIHIKO ,  ATSUMI AKIRA ,  MIZUIDE MASUYA

    IPC: H01J9/12 ,  H01J9/18 ,  H01J43/04 ,  H01J43/10 ,  H01J43/12 ,  H01J43/22

    Abstract: A photomultiplier comprising an electron multiplier for minimizing a variation in multiplication factor and noise is characterized in that insulating members (80a,b) are aligned on the same line (606) to insulate a plurality of dynode plates for constituting a dynode unit from each other, thereby preventing a damage to each dynode plate. At the same time, a through hole (600) is formed to fix the insulating member provided to each dynode plate such that a gap is provided between the major surface of the dynode plate and the surface of the insulating member, thereby preventing discharge between dynode plates, which is caused due to dust or the like deposited on the surface of the insulating member.

    4.
    发明专利
    未知

    公开(公告)号：DE69406709T2

    公开(公告)日：1998-04-02

    申请号：DE69406709

    申请日：1994-04-28

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： KYUSHIMA HIROYUKI ,  NAGURA KOJI ,  HASEGAWA YUTAKA ,  KAWANO EIICHIRO ,  KUROYANAGI TOMIHIKO ,  ATSUMI AKIRA ,  MIZUIDE MASUYA

    IPC: H01J9/12 ,  H01J9/18 ,  H01J43/04 ,  H01J43/10 ,  H01J43/12 ,  H01J43/22

    Abstract: A photomultiplier is constituted by a photocathode and an electron multiplier having a typical structure in which a dynode unit having a plurality of dynode plates stacked in an incident direction of photoelectrons, an anode plate, and an inverting dynode plate are sequentially stacked. Through holes (101) for injecting a metal vapor are formed in the inverting dynode plate (13) to form secondary electron emitting layers on the surfaces of dynodes supported by the dynode plates, and the photocathode. With this structure, the secondary electron emitting layers are uniformly formed on the surfaces of the dynodes. Therefore, variations in output signals obtained from anodes can be reduced regardless of the positions of the photocathode.

    5.
    发明专利
    未知

    公开(公告)号：DE69406709D1

    公开(公告)日：1997-12-18

    申请号：DE69406709

    申请日：1994-04-28

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： KYUSHIMA HIROYUKI ,  NAGURA KOJI ,  HASEGAWA YUTAKA ,  KAWANO EIICHIRO ,  KUROYANAGI TOMIHIKO ,  ATSUMI AKIRA ,  MIZUIDE MASUYA

    IPC: H01J9/12 ,  H01J9/18 ,  H01J43/04 ,  H01J43/10 ,  H01J43/12 ,  H01J43/22

    Abstract: A photomultiplier is constituted by a photocathode and an electron multiplier having a typical structure in which a dynode unit having a plurality of dynode plates stacked in an incident direction of photoelectrons, an anode plate, and an inverting dynode plate are sequentially stacked. Through holes (101) for injecting a metal vapor are formed in the inverting dynode plate (13) to form secondary electron emitting layers on the surfaces of dynodes supported by the dynode plates, and the photocathode. With this structure, the secondary electron emitting layers are uniformly formed on the surfaces of the dynodes. Therefore, variations in output signals obtained from anodes can be reduced regardless of the positions of the photocathode.

    9.
    发明专利
    未知

    公开(公告)号：DE69404079T2

    公开(公告)日：1997-11-06

    申请号：DE69404079

    申请日：1994-04-28

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： KYUSHIMA HIROYUKI ,  NAGURA KOJI ,  HASEGAWA YUTAKA ,  KAWANO EIICHIRO ,  KUROYANAGI TOMIHIKO ,  ATSUMI AKIRA ,  MIZUIDE MASUYA

    IPC: H01J9/12 ,  H01J9/18 ,  H01J43/04 ,  H01J43/10 ,  H01J43/12 ,  H01J43/22

    Abstract: A photomultiplier comprising an electron multiplier for minimizing a variation in multiplication factor and noise is characterized in that insulating members (80a,b) are aligned on the same line (606) to insulate a plurality of dynode plates for constituting a dynode unit from each other, thereby preventing a damage to each dynode plate. At the same time, a through hole (600) is formed to fix the insulating member provided to each dynode plate such that a gap is provided between the major surface of the dynode plate and the surface of the insulating member, thereby preventing discharge between dynode plates, which is caused due to dust or the like deposited on the surface of the insulating member.

Patent Agency Ranking