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公开(公告)号：JPH1031970A
公开(公告)日：1998-02-03
申请号：JP18638796
申请日：1996-07-16
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KIMURA SUENORI , ASAKURA NORIO , HIRANO MASARU , KAWAI KATSUHIKO , HASEGAWA HIROSHI , MORITA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To provide an electron tube which is embodied in a small size and can be assembled easily. SOLUTION: An electron tube 1 is composed of a case 10, input face plate 21, stem 31, semiconductor element 40, and anode electrode 60. The case 10 contains a ring-shaped cathode electrode 11 located on the side with a photoelectric surface 22, a ring-shaped welding electrode 13 located on the side with the stem 31 with the external end secured to the stem 31, and a ring-shaped bulb 12 made of an electric insulating material located between the cathode electrode 11 and welding electrode 13 in such an arrangement that the three are layered concentrically, wherein the cathode electrode 11 forms an electron lens for casting electrons emitted from the photoelectric surface 22 onto the semiconductor element 40 in cooperation with the anode electrode 60, is made of a conductive material in a single piece structure, and connected with the input face plate 21 through a low melting point metal 23. The bulb 12 is structured so that its one end is fixed to the interior end face 11a of the cathode electrode 11, while other end is secured to the interior end face 13a of the welding electrode 13.
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公开(公告)号：JP2001004445A
公开(公告)日：2001-01-12
申请号：JP16984199
申请日：1999-06-16
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KAWAI KATSUHIKO , MORITA TETSUYA , OBA KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a light measuring instrument which can accurately measure the quantity of incident luminous flux. SOLUTION: This light measuring instrument 10 is equipped with a photon detection part 12 which outputs an output signal corresponding to the number of incident photons, a timing signal generating circuit 14 which generates a periodic signal having a period smaller than the duration of the output signal from the photon detection part 12 when one photon is made incident, an A/D converter 16 which converts the output signal from the photon detection part 12 from analog to digital according to the cycle signal generated by the timing signal generating circuit 14, an adder 18 which adds the output signal after the A/D conversion by the A/D converter 16, and a CPU 20 which counts photons made incident on the photon detection part 12 according to the addition signal outputted by the adder 18. The photon detection part 12 is equipped with an HPD (hybrid photodetector) 24 which detects photons and a TZ (transimpedance) amplifier 26 which amplifies the output signal from the HPD 24.
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公开(公告)号：JP2001004443A
公开(公告)日：2001-01-12
申请号：JP16984499
申请日：1999-06-16
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KAWAI KATSUHIKO , MORITA TETSUYA , OBA KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To provide the light measuring instrument which has a wide dynamic range and can take a high-precision measurement. SOLUTION: The light measuring instrument 10 is equipped with an HPD (hybrid photodetector) 28, a voltage switching part 34, and a correction part 36. The HPD 28 is equipped with a photoelectric surface 28a and an APD (avalanche photodiode) 28b and has two operation modes, i.e., an electron irradiation mode wherein the quantity of photoelectrons emitted by the photoelectric surface 28a is measured and a light transmission mode wherein the quantity of light transmitted through the photoelectronic surface 28a is measured. The voltage switching part 34 switches the operation mode of the HPD 28 according to the output signal of the HPD 28. The correction part 36 multiplies the output signal from the HPD 28 in the light transmission mode by a constant coefficient to correct the output signal.
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公开(公告)号：JP2000275101A
公开(公告)日：2000-10-06
申请号：JP8384299
申请日：1999-03-26
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KAWAI KATSUHIKO , MORITA TETSUYA , OBA KOICHIRO
IPC: G01J1/42
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for measuring for a long time a light capable of measuring 'when and how many photons' come. SOLUTION: The apparatus 10 for measuring light comprises a photon detector 12 for detecting incident photon, a time signal output unit 14 for outputting a time signal, and a storage unit 16 for storing the time signal output from the unit 14 when the photon has been detected by the detector 12. The detector 12 has an HPD 24 having a photoelectric surface 24a and an APD 24b, a TZ amplifier 26, a peak holding circuit 28, and an A-D converter 30. The unit 14 has a timer 32 and a counter 34. The unit 16 has a comparator 36 and a memory 38. When the photon is incident on the HPD 24, a trigger signal is output from the comparator 36, and number of the photons output from the converter 30 and time information output from the counter 34 are stored in the memory 38.
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公开(公告)号：JPH08162309A
公开(公告)日：1996-06-21
申请号：JP29725794
申请日：1994-11-30
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SAKAI SHIRO , NAKAMURA MAKOTO , SUZUKI HIROSHI , WADA KAZUAKI , KUSHIMA HIROYUKI , MORITA TETSUYA
Abstract: PURPOSE: To provide a resistor capable of reducing an installation space, and easy to handle. CONSTITUTION: For obtaining a resistor 10, a number of metal conductors U are formed on a ceramic substrate 11, and resistance film substances R9, R12-R19, etc., are formed between them. A specified resistance value is provided between respective metal conductors U. One end of each metal conductor U is connected to a lead wire L in an insertion hole 12, and the other end of the extending lead wire L is connected to a corresponding dynode, etc., and used.
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Patent Agency Ranking
公开(公告)号：JP2001027567A
公开(公告)日：2001-01-30
申请号：JP19911599
申请日：1999-07-13
Applicant: HAMAMATSU PHOTONICS KK
Inventor： KAWAI KATSUHIKO , SUYAMA MOTOHIRO , MORITA TETSUYA , OBA KOICHIRO
IPC: G01J1/42
Abstract: PROBLEM TO BE SOLVED: To obtain the light measuring instrument which has a wide dynamic range and can accurately measure the quantity of incident luminous flux. SOLUTION: The light measuring instrument 10 is equipped with a timing pulse generator 14 which outputs a timing pulse signal with a period T, an HPD (optical detecting means) 16 which outputs a signal corresponding to the quantity of the incident luminous flux, a charge amplifier 20 which integrates the signal outputted from the HPD 16, a comparator 22 which outputs a saturation signal when the output of the charge amplifier 20 exceeds a reference voltage Vc, a counter 26 which counts how many times the saturation signal is outputted from the comparator 22, an A/D converter 28 which converts the output of the charge amplifier 20 from analog to digital, and an arithmetic part 30 which calculates the quantity of the incident luminous flux according to the output of the counter 26 and the output of the A/D converter 28. The charge amplifier 20 is rest with the timing pulse signal outputted by the timing pulse generator 14 and the mentioned saturation signal.
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公开(公告)号：JPH1031971A
公开(公告)日：1998-02-03
申请号：JP18639296
申请日：1996-07-16
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KIMURA SUENORI , ASAKURA NORIO , HIRANO MASARU , KAWAI KATSUHIKO , HASEGAWA HIROSHI , MORITA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To provide an electronic tube which is embodied in a small size and can be assembled easily. SOLUTION: An electronic tube concerned 1 is composed of a case 10, input face plate 21, stem 31, semiconductor element 40, and anode electrode 60. The case 10 contains a ring-shaped cathode electrode 11 located on the side with a photoelectric surface 22, a ring-shaped welding electrode 13 located on the side with the stem 31 with the external end secured to the stem 31, a ring-shaped bulb 12 made of an electric insulating material located between the cathode electrode 11 and welding electrode 13, and a ring-shaped middle electrode 90 with which the bulb 12 is divided into at least two segments and which is interposed between the segments in such an arrangement that the four component members are laminated concentrically, wherein the cathode electrode 11 forms an electron lens for casting electrons emitted from the photoelectric surface 22 onto the semiconductor element 40 in cooperation with the anode electrode 60, is made of a conductive material in a single piece structure, and connected with the input face plate 21 through a low melting point metal 23. the bulb 12 is structured so that its one end is fixed to the interior end face 11a of the cathode electrode 11 while other end is secured to the interior end face 13a of the welding electrode 13.
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公开(公告)号：JPH09312145A
公开(公告)日：1997-12-02
申请号：JP12872396
申请日：1996-05-23
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KIMURA SUENORI , SAITO TETSUYA , MORITA TETSUYA
IPC: H01J43/12
Abstract: PROBLEM TO BE SOLVED: To provide an electron tube capable of a stable operation over a long period of time. SOLUTION: In this electron tube, an opening area of an opening 61 of an anode electrode 60 is formed smaller than an incident area of an electron incident face 44a of a semiconductor device 40, the semiconductor device 40 is constituted so as to have an electron incident face 44a whose conductor type is (p) type and a board 41 whose conductor type is (n) type, electrically connect an (n) type board 41 to a system 31, have the anode electrode 60 and the system 31 with their same potential, and apply a reverse-bias to the semiconductor device 40.
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公开(公告)号：JPH09297055A
公开(公告)日：1997-11-18
申请号：JP11165696
申请日：1996-05-02
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUYAMA MOTOHIRO , KAWAI KATSUHIKO , KIMURA SUENORI , HIRANO MASARU , ASAKURA NORIO , MORITA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To obtain such a structure that can stabilize the orbit of electron accelerated and focused by an electronic lens and effectively suppress the generation of noises due to discharging. SOLUTION: A cathode electrode 3 constituting an electronic lens extends partly toward a stem 10 along an inner wall 502 of an insulation container 5 and its tip end becomes thinner toward the stem 10, so that the tip end of the electrode 3 is apart from the inner wall 502 of the container 5. Thus, the container 5 is prevented from charging, and the discharging together with light emission to the electrode 3 and the container 5 can be suppressed.
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公开(公告)号：JPH09180670A
公开(公告)日：1997-07-11
申请号：JP33903295
申请日：1995-12-26
Applicant: HAMAMATSU PHOTONICS KK
Inventor： UCHIYAMA ATSUSHI , WADA KAZUAKI , YAMASHITA KAZUMI , ISHIZU TOMOHIRO , MORITA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To provide a long scale-shaped photomultiplier tube of high delivery efficiency of an electron between stages of the final step dynode and anode. SOLUTION: A device comprises a tubular vacuum vessel 10 having a light incident window 11, photoelectric surface 20 formed in an internal surface of the light incident window 11 and an electron multiplier part 30 received in the vacuum vessel 10 to be extended in a direction of a tube axis A of the vacuum vessel 10. The electron multiplier part 30 is provided with a plurality of steps of dynodes 41 to 50 multiplying an electron emitted from the photoelectric surface 20 and an anode 34 arranged in the vicinity of the final step dynode 50 to collect the electron multiplied by this dynode 50, a main unit 34a of the anode 34 has a V-shaped section folded into two parts along the tube axis A, a folded part 34c of the anode 34 is arranged adjacent to a secondary electron emitting surface 50b of the dynode 50.
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