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公开(公告)号：DE69615958T2
公开(公告)日：2002-04-25
申请号：DE69615958
申请日：1996-07-19
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , NAKAMURA KIMITSUGU , KIMURA SUENORI , OOHASHI YOUSUKE , OHMURA TAKAYUKI , ITO MASUO
Abstract: Photomultiplier tube (1) having a photocathode (5) for emitting photoelectrons to an electron multiplication portion (6). The electron multiplication portion (6) includes a first dynode (Dy1) and a second dynode (Dy2) in confrontation with the first dynode (Dy1). The second dynode (Dy2) has a secondary electron emission which is substantially saturated with respect to an electric voltage applied thereto, or which is fixed with respect to electrons that are originated from the first dynode (Dy1) and other electrons that are reflected off the first dynode (Dy1).
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公开(公告)号：AU3958699A
公开(公告)日：1999-12-20
申请号：AU3958699
申请日：1999-06-01
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , ATSUMI AKIRA , SHIMOI HIDEKI , OKADA TOMOYUKI , ITO MASUO
Abstract: A photomultiplier tube unit including photomultiplier tubes densely assembled and thereby having an improved light sensing efficiency. The outer surfaces (2b) of metal side tubes (2) of photomultiplier tubes (1) are in facial contact with one another, and thereby a high-density arrangement of photomultiplier tubes (1) are achieved. The side tubes (2) can be electrically connected to one another, and therefore the side tubes (2) can be easily made equipotential. As a result, it is unnecessary to electrically connect the stem pin (10) to the side tube (2) of each photomultiplier tube (1), facilitating the assembling of the photomultiplier tube unit. When a required photomultiplier tube (1) in a device (e.g., a gamma camera) having thus-united multiple photomultiplier tubes is replaced with a new one, the troublesome work of replacing photomultiplier tubes one by one is obviated, simplifying the replacement work.
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公开(公告)号：DE69310603T2
公开(公告)日：1997-09-11
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
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公开(公告)号：FR2611084A1
公开(公告)日：1988-08-19
申请号：FR8801742
申请日：1988-02-15
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKAMURA KIMITSUGU , ITO MASUO
Abstract: A photomultiplier for converting an incident weak light into multiplied electrons to thereby output an electrical signal corresponding to the intensity of the incidence light. The photomultiplier comprises a photocathode for emitting primary electrons; plural dynodes for emitting secondary electrons in response to incident of the primary electrons and multiplying first secondary electrons passing between the dynodes; and shield means for preventing second secondary electrons emitted from a first dynode of the dynodes toward the photocathode from returning to the dynodes, thereby to reduce the generation of a residual pulse currents caused by the second secondary electrons and to accurately detect a main pulse current caused by the first secondary electrons.
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公开(公告)号：EP1085556A4
公开(公告)日：2007-05-02
申请号：EP99922628
申请日：1999-06-01
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , ATSUMI AKIRA , SHIMOI HIDEKI , OKADA TOMOYUKI , ITO MASUO
CPC classification number: G01N23/046 , G01N23/08 , G01N2223/419 , H01J43/04 , H01J43/28
Abstract: With the outer wall surface (2b) of a metal-made side tube (2) of a photomultiplier (1) flush with the edge face (4b) of a stem plate (4), the side tube (2) is secured to the stem plate (4) by welding, and thereby there is no projection like a flange at the bottom of the photomultiplier (1), reducing the size of the photomultiplier (1). Therefore, though it is difficult to perform resistance welding, the outside dimensions of the photomultiplier (1) can be decreased, and multiple photomultipliers (1) can densely abut to one another in such a way that the side tubes (2) are put together even if the photomultipliers (2) are arranged when applied. Hence, high-density arrangement of photomultipliers (1) are realized by assembling metallic stem plate (4) and the side tube (2) by, for example, laser welding.
Abstract translation: 在光电倍增管（1）的金属制侧管（2）的外壁表面（2b）与管板（4）的边缘表面（4b）齐平的情况下，侧管（2）固定到 （4）焊接，从而在光电倍增管（1）的底部没有凸缘那样的突起，从而减小了光电倍增管（1）的尺寸。 因此，尽管难以进行电阻焊接，但是光电倍增管（1）的外部尺寸可以减小，并且多个光电倍增管（1）可以以侧管（2）放在一起的方式彼此紧密地邻接 即使应用光电倍增管（2）时也是如此。 因此，光电倍增管（1）的高密度配置通过例如激光焊接将金属制的基板（4）和侧管（2）组装起来而实现。
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Patent Agency Ranking
公开(公告)号：EP1717842A4
公开(公告)日：2008-06-18
申请号：EP05719154
申请日：2005-02-16
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , SHIMOI HIDEKI , KAGEYAMA AKIHIRO , INOUE KEISUKE , ITO MASUO
Abstract: A photomultiplier having a fine structure for realizing high multiplication efficiency. The photomultiplier comprises an enclosure the inside of which is maintained in a vacuum state. In the enclosure, a photoelectric surface for emitting photoelectrons in response to the incident light, an electron multiplying section for cascade-multiplying photoelectrons emitted from the photoelectric surface, and an anode for extracting secondary electrons produced by the electron multiplying section are provided. Especially a groove section for cascade-multiplying the photoelectrons from the photoelectric surface is formed in the electron multiplying section. On the surfaces of a pair of wall portions (311) defining the groove section, one or more projecting portions (311a) having secondary electron emitting surface are provided.
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公开(公告)号：EP1708243A4
公开(公告)日：2008-06-04
申请号：EP04807699
申请日：2004-12-24
Applicant: HAMAMATSU PHOTONICS KK
Inventor： OHMURA TAKAYUKI , KIMURA SUENORI , ITO MASUO
CPC classification number: H01J43/08
Abstract: A photomultiplier tube includes: a cathode (3) for emitting electrons by the incident light; a plurality of stages of dynode (107) for multiplying the electrons emitted from the cathode (3); and an electronic lens formation electrode (115) arranged at a predetermined position with respect to the edge of a first dynode (107a) located at the first stage from the cathode (3) and the edge of the second dynode (107b) located at the second stage from the cathode (3) and flattening the equipotential surface in the space between the first dynode (107a) and the second dynode (107b) in the longitudinal direction of the first dynode (107a). With this configuration, it is possible to improve the time resolution for the incident light.
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公开(公告)号：EP1717843A4
公开(公告)日：2008-12-17
申请号：EP05710248
申请日：2005-02-16
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , SHIMOI HIDEKI , KAGEYAMA AKIHIRO , INOUE KEISUKE , ITO MASUO
Abstract: A photomultiplier having a structure for easily realizing high detection accuracy and microfabrication and its manufacturing method are disclosed. The photomultiplier (1a) comprises an enclosure (2, 3, 4) the inside of which is maintained in a vacuum state. In the enclosure (2, 3, 4), a photoelectric surface (22) for emitting electrons in response to the incident light, an electron multiplying section (31) for cascade-multiplying electrons emitted from the photoelectric surface (22), and an anode (32) for extracting secondary electrons produced by the electron multiplying section (31) are provided. A part of the enclosure (2, 3, 4) is composed of glass substrates (20, 40) each having a flat portion. On the flat portions of the glass substrates (20, 40), the electron multiplying section (31) and the anode (32) are two-dimensionally arranged, respectively.
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公开(公告)号：EP1150333A4
公开(公告)日：2006-03-22
申请号：EP99900353
申请日：1999-01-19
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KIMURA SUENORI , ITO MASUO
Abstract: A photomultiplier (1), wherein a ray of light incident on a light receiving surface plate is converted into photoelectrons at a photoelectric surface (3a) for entry into a dynode (4) and secondary electrons from the dynode is collected at a mesh-shaped anode (5). Since the anode (5) is disposed in parallel to the photoelectric surface, photoelectrons from the photoelectric surface can easily pass through the mesh portion of the anode to enhance gain characteristics of the photomultiplier. In addition, the anode can be easily formed into a flat plate shape. Since the secondary electron emission surface (4a) of the dynode (4) is disposed inclined with respect to the anode to allow a slant incidence of photoelectrons, emission amount of secondary electrons is increased to enhance gain characteristics of the photomultiplier.
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公开(公告)号：EP1093150A4
公开(公告)日：2007-05-02
申请号：EP99922629
申请日：1999-06-01
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , ATSUMI AKIRA , SHIMOI HIDEKI , OKADA TOMOYUKI , ITO MASUO
CPC classification number: G01N23/046 , G01N23/08 , G01N2223/419 , H01J43/04 , H01J43/28
Abstract: With the outer wall surface (2b) of a metal-made side tube (2) of a photomultiplier (1) flush with the edge face (4b) of a stem plate (4), the side tube (2) is secured to the stem plate (4) by welding, and thereby there is no projection like a flange at the bottom of the photomultiplier (1), reducing the size of the photomultiplier (1). Therefore, though it is difficult to perform resistance welding, the outside dimensions of the photomultiplier (1) can be decreased, and multiple photomultipliers (1) can densely abut to one another in such a way that the side tubes (2) are put together even if the photomultipliers (2) are arranged when applied. Hence, high-density arrangement of photomultipliers (1) are realized by assembling metallic stem plate (4) and the side tube (2) by, for example, laser welding.
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