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公开(公告)号：DE69212235T2
公开(公告)日：1996-12-05
申请号：DE69212235
申请日：1992-05-22
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKAMURA KIMITSUGU , ITO MASUO , SUZUKI SEIJI , WATASE YASUSHI
Abstract: There is disclosed a phototube (11) comprising a closed container having a light permeable face plate (12a) the outside surface of which is a light incident surface, a photocathode (13) so provided in the closed container that at least a part of a photo-electric surface is inclined to the light incident surface, and an anode (14) so provided in the closed container that an electron capturing surface is opposed to the photo-electric surface in parallelism therewith.
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公开(公告)号：DE69713996T2
公开(公告)日：2003-01-23
申请号：DE69713996
申请日：1997-12-10
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUZUKI HIDEKI , KONDO MINORU , ITO MASUO , ISHIHARA YOSHITOSHI
Abstract: In an image intensifier comprising an entrance faceplate, made of a material transparent to light, having a photoelectric surface, formed on a surface opposite to a light entrance surface, for photoelectrically converting incident light into an electron; and an optical fiber block (4), constituted by a plurality of optical fibers bundled together, having a phosphor face (46) at an end face (44) of each optical fiber on the light entrance side, for emitting light in response to the electron incident thereon; the photoelectric surface of the entrance faceplate and the phosphor face of the optical fiber block opposing each other, while a vacuum atmosphere being formed therebetween; the optical fiber block is provided with a pit in which an end face (44) of a core portion (42) of each optical fiber is recessed from an end face of a cladding portion (43) thereof, the bottom of the pit is filled with a phosphor, the surface of this phosphor is provided with a metal back layer, the cladding portion projects from the surface of the phosphor toward the entrance surface by a predetermined height, and the projecting surface of the cladding portion is provided with a metal film (47).
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公开(公告)号：DE69604635T2
公开(公告)日：2000-01-27
申请号：DE69604635
申请日：1996-08-29
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , NAKAMURA KIMITSUGU , ITO MASUO
Abstract: To eliminate a distortion of an output image detected by a semiconductor device (6) serving as an anode in an electron tube, a faceplate (1) is configured to a planar shape and a window (61) provided on the semiconductor device (6) has a pincushion-shaped outer profile in which points on the outer profile of the window (61) that correspond to points on the outer profile of the faceplate (1) are proportionally positioned farther outwards than the corresponding points in the outer profile of the faceplate (1) are apart from the center of the faceplate (1). Further, the window is divided into a plurality of segments (62a,b) to define picture elements.
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公开(公告)号：DE69604635D1
公开(公告)日：1999-11-18
申请号：DE69604635
申请日：1996-08-29
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , NAKAMURA KIMITSUGU , ITO MASUO
Abstract: To eliminate a distortion of an output image detected by a semiconductor device (6) serving as an anode in an electron tube, a faceplate (1) is configured to a planar shape and a window (61) provided on the semiconductor device (6) has a pincushion-shaped outer profile in which points on the outer profile of the window (61) that correspond to points on the outer profile of the faceplate (1) are proportionally positioned farther outwards than the corresponding points in the outer profile of the faceplate (1) are apart from the center of the faceplate (1). Further, the window is divided into a plurality of segments (62a,b) to define picture elements.
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公开(公告)号：FR2611084B1
公开(公告)日：1992-06-05
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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Patent Agency Ranking
公开(公告)号：AU7276201A
公开(公告)日：2002-02-13
申请号：AU7276201
申请日：2001-07-19
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KIMURA SUENORI , FURUHASHI MASAMI , ISHIZU TOMOHIRO , ITO MASUO
Abstract: A photomultiplier excellent in vibration resistance and improved in pulse linearity characteristic and time-response. The fourth, and sixth to ninth dynodes (Dy4, Dy6 to Dy9) have a similar shape to that of the second dynode (Dy2). The third and fifth dynodes (dy3, Dy5) are smaller than the dynode (Dy2). The first to tenth dynodes (Dy1 to Dy10) are so arranged that the dynode inner space path defined between opposed dynodes is perpendicular to the tube axis (X). The anode (A) is a mesh anode (A), and is opposed to the dynode (Dy2) with respect to the tube axis (X).
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公开(公告)号：AU3958899A
公开(公告)日：1999-12-20
申请号：AU3958899
申请日：1999-06-01
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KYUSHIMA HIROYUKI , ATSUMI AKIRA , SHIMOI HIDEKI , OKADA TOMOYUKI , ITO MASUO
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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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
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公开(公告)号：DE69212235D1
公开(公告)日：1996-08-22
申请号：DE69212235
申请日：1992-05-22
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKAMURA KIMITSUGU , ITO MASUO , SUZUKI SEIJI , WATASE YASUSHI
Abstract: There is disclosed a phototube (11) comprising a closed container having a light permeable face plate (12a) the outside surface of which is a light incident surface, a photocathode (13) so provided in the closed container that at least a part of a photo-electric surface is inclined to the light incident surface, and an anode (14) so provided in the closed container that an electron capturing surface is opposed to the photo-electric surface in parallelism therewith.
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公开(公告)号：GB2202988B
公开(公告)日：1991-10-23
申请号：GB8803298
申请日：1988-02-12
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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