公开(公告)号：DE69404080D1

公开(公告)日：1997-08-14

申请号：DE69404080

申请日：1994-04-28

Applicant: HAMAMATSU PHOTONICS KK

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

IPC: H01J9/12 ,  H01J9/18 ,  H01J43/04 ,  H01J43/10 ,  H01J43/12 ,  H01J43/22 ,  H01J29/02

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.

公开(公告)号：DE69403857D1

公开(公告)日：1997-07-24

申请号：DE69403857

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: H01J43/20 ,  H01J9/12 ,  H01J9/18 ,  H01J43/04 ,  H01J43/10 ,  H01J43/12 ,  H01J43/22

公开(公告)号：DE69310603D1

公开(公告)日：1997-06-19

申请号：DE69310603

申请日：1993-03-17

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KYUSHIMA HIROYUKI ,  HASEGAWA YUTAKA ,  ITO MASUO ,  TAKEUCHI JUNICHI ,  OBA KOICHIRO

IPC: H01J43/22 ,  H01J43/28

公开(公告)号：DE69927814D1

公开(公告)日：2006-03-02

申请号：DE69927814

申请日：1999-06-15

Applicant: HAMAMATSU PHOTONICS KK

Inventor： SHIMOI HIDEKI ,  KYUSHIMA HIROYUKI ,  HASEGAWA YUTAKA ,  NAGAI TOSHIMITSU

IPC: H01J29/84 ,  H01J31/50 ,  H01J43/06 ,  H01J43/30

Abstract: To prevent the deterioration in sensitivity of the photocathode (20) of an electron tube and maintain stable output for a long time, an ion confining electrode (22) and an ion trap electrode (23) are provided between the photocathode (20) and a first stage dynode (24a). The potential of the ion confining electrode (22) is set higher than that of the first stage dynode (24a), while the potential of the ion trap electrode (23) is set equal to or higher than that of the photocathode (20) and lower than that of the first stage dynode 24a. Since the feedback to the photocathode (20) of the positive ions generated in the vicinity of the first stage dynode can be effectively suppressed, the sensitivity of the photocathode (20) is prevented from decreasing, and stable output is maintained for a long time.

公开(公告)号：DE69725394T2

公开(公告)日：2004-07-22

申请号：DE69725394

申请日：1997-07-16

Applicant: HAMAMATSU PHOTONICS KK

Inventor： SUYAMA MOTOHIRO ,  KIMURA SUENORI ,  ASAKURA NORIO ,  HIRANO KEN ,  KAWAI YOSHIHIKO ,  HASEGAWA YUTAKA ,  MORITA TETSUYA

IPC: H01J43/28

Abstract: The present invention relates to an electron tube comprising, at least, a cathode electrode and a face plate having a photocathode which are arranged at one end of a body, and a stem arranged at the other end of the body for defining the position of an electron entrance surface where the electron emitted from the photocathode reaches. The object of the present invention is to provide an electron tube which can reduce its size and has a structure for improving the workability in its assembling process. In particular, the electron tube in accordance with the present invention comprises a bonding ring, provided between the face plate and the cathode electrode, for bonding the face plate and the cathode electrode together. The bonding ring is made of a metal material selected from the group consisting of In, Au, Pb, alloys containing In, and alloys containing Pb.

公开(公告)号：AU2003242372A1

公开(公告)日：2003-12-31

申请号：AU2003242372

申请日：2003-05-21

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KOHNO YASUYUKI ,  NAGAI TOSHIMITSU ,  HASEGAWA YUTAKA

IPC: H01J1/34 ,  H01J9/12 ,  H01J40/06 ,  H01J43/08 ,  H01J7/18

Abstract: A semiconductor photocathode of the present invention is provided with: a support substrate 10; a photoelectric surface 30 which is formed of a plurality of semiconductor layers layered on this support substrate 10 and which emits photoelectrons from a photoelectron emitting surface 341 in response to the incidence of light to be detected; and a metal electrode 35 which is formed in film form so as to coat at least a portion of support substrate 10 and a portion of photoelectric surface 30 and which makes ohmic contact with the photoelectric surface, wherein metal electrode 30 in film form includes titanium and the electron affinity of photoelectron emitting surface 341, which is an exposed portion of photoelectric surface 30 without being coated with metal electrode 35 in film form, is in a negative condition.

公开(公告)号：DE69819376D1

公开(公告)日：2003-12-11

申请号：DE69819376

申请日：1998-01-27

Applicant: HAMAMATSU PHOTONICS KK

Inventor： NEGI YASUHARU ,  NAGAI TOSHIMITSU ,  KIBUNE ATSUSHI ,  HASEGAWA YUTAKA ,  ICHIKAWA SHIGERU ,  KISHITA HITOSHI ,  SUYAMA MOTOHIRO ,  ASAKURA NORIO

IPC: H01J5/22 ,  H01J31/50

Abstract: To provide an electron tube having good airtightness and being appropriate for mass production, indium (23) affixed to the inner surface of a sealing metal support member (24) is provided between a side tube (10) and input faceplate (21). The input faceplate (21) is pushed against the side tube (10). As a result, the indium (23) is squeezed by a pressure receiving surface (70) provided on the end face of the side tube. Since the pressure receiving surface (70) is in a generally declining shape from the inside out, the force of the pressing surface (70) causes the indium (23) to flow outward toward the sealing metal support member (24). Therefore, the indium (23) is firmly affixed to the pressure receiving surface (70), and the side tube (10) and input faceplate (21) can be reliably sealed by the indium (23).

公开(公告)号：AU4062299A

公开(公告)日：2000-01-05

申请号：AU4062299

申请日：1999-06-15

Applicant: HAMAMATSU PHOTONICS KK

Inventor： SHIMOI HIDEKI ,  KYUSHIMA HIROYUKI ,  HASEGAWA YUTAKA ,  NAGAI TOSHIMITSU

IPC: H01J43/06 ,  H01J43/30

Abstract: To prevent the deterioration in sensitivity of the photocathode (20) of an electron tube and maintain stable output for a long time, an ion confining electrode (22) and an ion trap electrode (23) are provided between the photocathode (20) and a first stage dynode (24a). The potential of the ion confining electrode (22) is set higher than that of the first stage dynode (24a), while the potential of the ion trap electrode (23) is set equal to or higher than that of the photocathode (20) and lower than that of the first stage dynode 24a. Since the feedback to the photocathode (20) of the positive ions generated in the vicinity of the first stage dynode can be effectively suppressed, the sensitivity of the photocathode (20) is prevented from decreasing, and stable output is maintained for a long time.

公开(公告)号：DE69504139T2

公开(公告)日：1999-01-28

申请号：DE69504139

申请日：1995-06-06

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KYUSHIMA HIROYUKI ,  HASEGAWA YUTAKA ,  ATSUMI AKIRA ,  NAGURA KOJI

IPC: H01J9/18 ,  H01J43/22

Abstract: A photomultiplier of the present invention has an electron multiplier of a structure which can be manufactured easily. This electron multiplier is constituted by dynode plates that are stacked through insulators so as to be separated from each other at a predetermined interval. Each dynode plate comprises upper- and lower-electrode plates that are electrically connected to each other. The upper- and lower-electrode plates grip at least one of the insulators such that the gripped insulator is partly exposed.