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公开(公告)号：JP2009014624A
公开(公告)日：2009-01-22
申请号：JP2007178909
申请日：2007-07-06
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI , MATSUI SHINJIRO
Abstract: PROBLEM TO BE SOLVED: To provide a radiation detection apparatus and radiation detection method capable of determining a component material of an imaging object even if the constitution of it is unknown.
SOLUTION: This radiation detection apparatus 1 includes a radiation detection section 11 that has detection sensitivity in an energy range of at least 1-150 keV and generates signals according to the energy of photon of radiation, a signal processing means 13 for energy-discriminating the generated signals, counting them, and acquiring the counted value for each of at least three energy regions E1-E5 in the energy range, and a determining means 31B for calculating the absorption value of the imaging object 3 based on the acquired counted value, and determining at least one component material contained in the imaging object 3 based on a variation pattern to at least three energy regions and reference variation patterns P1-P5 of absorption coefficient for each of a plurality of reference materials M1-M5. The determining means determines the component material of the imaging object by determining the variation pattern to one of the plurality of reference variation patterns.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：提供一种能够确定成像对象的成分材料的放射线检测装置和放射线检测方法，即使其构成未知。 解决方案：该放射线检测装置1包括在至少1-150keV的能量范围内具有检测灵敏度并根据辐射光子的能量产生信号的辐射检测部分11，用于能量的信号处理装置13 对产生的信号进行识别，对它们进行计数，并获取能量范围中的至少三个能量区域E1-E5中的每一个的计数值;以及确定装置31B，用于基于所获取的计数来计算成像对象3的吸收值 值，并且基于针对多个参考材料M1-M5中的每一个的至少三个能量区域和吸收系数的参考变化图案P1-P5的变化图案来确定包含在成像对象3中的至少一个组分材料。 确定装置通过确定对多个参考变化图案之一的变化模式来确定成像对象的成分材料。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2007256096A
公开(公告)日：2007-10-04
申请号：JP2006081268
申请日：2006-03-23
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI , MATSUI SHINJIRO
Abstract: PROBLEM TO BE SOLVED: To provide an energy discrimination type radiation detector obtained in the uniformization of the detection sensitivity between a plurality of energy regions, and to provide a radiation detection method. SOLUTION: The radiation detector 6 is constituted so as to discriminate the radiation that has passed through an inspection target 2 in a plurality of energy regions. The detector 6 is equipped with a radiation detection part 10 for forming the output signals, corresponding to the energy possessed by incident radiations and a signal processing part 20, which discriminates the output signals, on the basis of first-Nth signal discrimination thresholds T 1 -T N and counting the discriminated output signals to acquire counted values A 1 -A N by region, which are the radiation counted values in a plurality of energy regions W 1 -W N . Then, the first-Nth signal discrimination thresholds T 1 -T N are set so that the counted values A 1 (B)-A N (B) that are the respective count values by region of a plurality of the energy regions W 1 -W N , when the radiation (reference radiation), in a state before passing through the inspection target 2, is detected by the radiation detection part 10, becomes almost equal. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：提供在多个能量区域之间的检测灵敏度的均匀化中获得的能量鉴别型放射线检测器，并且提供放射线检测方法。 解决方案：辐射检测器6被构造成在多个能量区域中区分已经通过检查对象2的辐射。 检测器6配备有辐射检测部分10，用于形成与入射辐射所具有的能量相对应的输出信号和信号处理部分20，该信号处理部分20基于第N信号鉴别阈值T < SB> 1 -T
N ，并对所识别的输出信号进行计数，以获取计数值A 1 -A N 是多个能量区域W -W N 中的辐射计数值。 然后，设置第一N信号鉴别阈值T -T N ，使得计数值A （B）-A < SB> N （B），其为多个能量区域W -W N 的各个计数值，当辐射（参考 辐射）在通过检查对象2之前的状态下，被放射线检测部10检测到，几乎相等。 版权所有（C）2008，JPO＆INPIT -
公开(公告)号：JP2005207954A
公开(公告)日：2005-08-04
申请号：JP2004016266
申请日：2004-01-23
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI , MATSUI SHINJIRO
Abstract: PROBLEM TO BE SOLVED: To provide a radiation detector capable of easily specifying a place where radioactivity is concentrated. SOLUTION: A detection part 2 detects radiation, and a data acquiring part 34 acquires basic data equivalent to a discrete value per unit time of the detected radiation. A data processing part 40 compares the basic data with a threshold, and it generates a signaling control signal when the basic data exceeds the threshold. A sound output device 42 outputs a detection sound in response to the signaling control signal. The threshold is calculated by an operation part 38 using a coefficient designated by using a threshold input part 18, and a maximum value of the basic data. If a user repeatedly checks an area to be measured while raising the threshold, an area setting off the detection sound can be gradually narrowed. By this, the place where radioactivity is concentrated within the area to be measured can be specified. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供能够容易地指定放射性浓缩的地方的放射线检测器。 解决方案：检测部分2检测辐射，并且数据获取部分34获取与检测到的辐射的每单位时间的离散值相当的基本数据。 数据处理部40将基本数据与阈值进行比较，并且当基本数据超过阈值时，生成信令控制信号。 声音输出装置42响应于信令控制信号输出检测声音。 由操作部38使用由阈值输入部18指定的系数和基本数据的最大值来计算阈值。 如果用户在提高阈值的同时重复检查要测量的区域，则可以逐渐缩小设置检测声音的区域。 因此，可以规定放射性集中在待测区域内的位置。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004109096A
公开(公告)日：2004-04-08
申请号：JP2002276261
申请日：2002-09-20
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： TOMITA YASUHIRO , KANEHARA MASANORI , NAKADA MICHIATSU , SHIRAYANAGI YUJI , MATSUI SHINJIRO
CPC classification number: A61B6/4057 , A61B6/425 , A61B6/4258 , A61B6/4411 , A61B6/4423
Abstract: PROBLEM TO BE SOLVED: To provide a radiation detector capable of preventing sealing performance of a main body of the radiation detector from being damaged due to influence of negative pressure when sterilization by a sterilization gas such as EOG is performed.
SOLUTION: A voice output unit 7, a power source switch 4 and a power source 3 installed on a detachable part A of an operation grip 1 are detachably attached on a main body part B of the grip 1. Therefore, the radiation detector from which the voice output part 7, the switch 4 and the power source 3 are removed can be sterilized by the sterilization gas such as EOG by removing the detachable part A on which the voice output part 7, the switch 4 and the source 3 are all installed when sterilization by the sterilization gas such as EOG is performed. Thus, the voice output part 7 is prevented from being damaged due to influence of negative pressure.
COPYRIGHT: (C)2004,JPO-
公开(公告)号：JP2000277789A
公开(公告)日：2000-10-06
申请号：JP8384899
申请日：1999-03-26
Applicant: HAMAMATSU PHOTONICS KK
Inventor： HATANAKA YOSHINORI , TOMITA YASUHIRO
Abstract: PROBLEM TO BE SOLVED: To reduce junction defect between respective layers by employing a material having a grating constant close to that of a radiation detecting layer in p layer and n layer constituting a radiation detecting element. SOLUTION: A radiation detecting layer 11 is formed of a single crystal Cd0.9Zn0.1Te of 1 mm thick having resistivity of 1010 Ω.cm and the upper surface thereof is doped with p type impurities of form a p type Cd0.9Zn0.1Te layer 13 while the lower surface thereof is doped with n type impurities to form an n type CdSe0.1Te0.9 layer 15. Since the Cd0.9Zn0.1Te forming the radiation detecting layer 11 and the CdSe0.1Te0.9 have grating constants close to each other, junction defect due to difference of grating constant can be reduced by forming the n layer of CdSe0.1Te0.9 and forming the p layer of same material as the radiation detecting layer 11. Consequently, leak current of a radiation detecting element 10 can be suppressed significantly as compared with a radiation detecting element 10 having neither p layer nor n layer.
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Patent Agency Ranking
公开(公告)号：JPH0945492A
公开(公告)日：1997-02-14
申请号：JP19659195
申请日：1995-08-01
Applicant: HAMAMATSU PHOTONICS KK
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI
Abstract: PROBLEM TO BE SOLVED: To provide the X-ray tube with catalyst, which can enhance a cleaning efficiency for gas and particles in the gas while the X-ray tube is being made use of effectively. SOLUTION: The X-ray tube with catalyst is provided with an envelop 2 disposed in the inside of a fluid passage A for a catalyst reaction device 11, a filament 3 which is disposed in the inside of the envelop 2 for emitting electrons by heating, a X-ray transmission window 5 which is disposed at the end part of the envelop 2 for letting X-rays be transmitted, and with a target 6 which is interposed between the filament 3 and the X-ray transmission window 5 for radiating X-rays toward the X-ray transmission window 5 by the incidence of electrons emitted out of the filament 3, and is provided for the outer surface of the X-ray transmission window 5. The provision of catalyst 7 accelerating the contact decomposition reaction of gas enables catalyst to be effectively activated by an extremely simple constitution by at least either one of photo energy or thermal energy radiated out of the X-ray transmission window 5.
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公开(公告)号：JPH0924296A
公开(公告)日：1997-01-28
申请号：JP17776795
申请日：1995-07-13
Applicant: HAMAMATSU PHOTONICS KK
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI
Abstract: PROBLEM TO BE SOLVED: To provide a gas cleaning apparatus which can remove pollutants and malodorous substances efficiently. SOLUTION: In this gas cleaning apparatus, x-rays are irradiated to a gas led to a box body 60 from an x-ray irradiating means 20, so that pollutants and malodorous substances contained in the gas are efficiently ionized. When voltage is applied to collecting electrodes 30-32 made of activated carbon by a voltage applying means 40, an electric field is generated between the collecting electrodes 30-32 and the ionized or charged substances are attracted to the collecting electrodes 30-32 due to the electric attraction of the electric field and adsorbed in the activated carbon which is a material for the collecting electrodes. Consequently, pollutants and malodorous substances in a gas can be collected and removed.
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公开(公告)号：JPH08299786A
公开(公告)日：1996-11-19
申请号：JP11311995
申请日：1995-05-11
Applicant: HAMAMATSU PHOTONICS KK
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI
Abstract: PURPOSE: To provide a photocatalytic reactor capable of efficiently decomposing and removing the contaminant, malodorous matter, suspended fungi, etc., in a gas. CONSTITUTION: This reactor consists of a reaction vessel 60 having a gas inlet 11 and a means 20 to irradiate a gas introduced into the vessel from the inlet with X-rays and is further provided with a means 40 to generate an electric field in the vessel 60 and filters 30 to 32 arranged in the electric field and irradiated with the X-rays from the means 20. The gas introduced into the vessel 60 is irradiated directly with X-rays, and consequently the gaseous contaminant and suspended fungi in the gas are efficiently ionized or charged. The ionized contaminant and charged fungi are attracted toward the photocatalyst by the electrical attractive force of the electric field in the vessel 60, efficently adsorbed on the photocatalyst, decomposed and sterilized by the photocatalysis and removed.
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公开(公告)号：JPH07171137A
公开(公告)日：1995-07-11
申请号：JP26988494
申请日：1994-11-02
Applicant: HAMAMATSU PHOTONICS KK
Inventor： TOMITA YASUHIRO , SUGAWARA TAKEO , OKUMURA KAZUAKI , HINO TOSHIHIKO , KAWAI TOSHIAKI
Abstract: PURPOSE:To output a clear fingerprint image. CONSTITUTION:A fingerprint reading unit 60 lights the input end surface 2 of a FOP 1 by an infrared LED 61, and detects a fingerprint image outputted to an output end surface 3 by a CCD 63. In a controlling computer 65, the detection of the fingerprint image by the CCD 63 is started when the top end of a finger is sensed by a touch sensor 62 and a prescribed pressing force is sensed by a pressure sensor 64.
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公开(公告)号：JP2008224609A
公开(公告)日：2008-09-25
申请号：JP2007067144
申请日：2007-03-15
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： TOMITA YASUHIRO , SHIRAYANAGI YUJI , MATSUI SHINJIRO
Abstract: PROBLEM TO BE SOLVED: To provide threshold determination method that can more efficiently determine energy threshold which can separate scattering components.
SOLUTION: In this method, radiation detector 3 uses photon counting method to detect radiation R from radiation source 2 through collimator 6, defines the sensing area of rectilinear propagation component of the radiation as the first area A and also that of scattering component as the second areas B1, B2 among the sensing area of the detector, based on the detected data, computing the mean-value ratio of these counted values in the first and second areas (first count ratio). Next, the detector detects radiation which passed through radiated object 5, while raising the energy threshold, to compute the mean-value ratio of those counted values in the first and second areas (second count ratio), based on detected data of each energy threshold. Then, the second count ratio is selected from a plurality of energy thresholds under specific requirements, based on the first count ratio to define the energy threshold for the second count ratio as the threshold for discriminating the rectilinear propagation component.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供可以更有效地确定能够分离散射分量的能量阈值的阈值确定方法。 解决方案：在这种方法中，辐射检测器3使用光子计数方法来检测来自辐射源2到准直仪6的辐射R，将辐射的直线传播分量的感测区域定义为第一区域A，以及散射分量 作为检测器的感测区域中的第二区域B1，B2，基于检测到的数据，计算第一和第二区域中的这些计数值的平均值比（第一计数比）。 接下来，检测器检测通过辐射对象5的辐射，同时提高能量阈值，以基于每个能量阈值的检测数据计算第一和第二区域中的那些计数值的平均值比（第二计数比） 。 然后，基于第一计数比将第二计数比从特定要求的多个能量阈值中选择，以将第二计数比率的能量阈值定义为用于区分直线传播分量的阈值。 版权所有（C）2008，JPO＆INPIT
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