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公开(公告)号：CA2127647A1
公开(公告)日：1995-01-10
申请号：CA2127647
申请日：1994-07-08
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , NAKAMURA SHIGEYUKI , OHTA TSUYOSHI
Abstract: A bias circuit for applying a bias voltage to an avalanche photodiode APD2 for detecting light comprises a first diode APD1, a power supply VH connected to the first diode APD1, for applying a voltage to make the diode in breakdown between an anode and a cathode of the first diode APD1, and a constant voltage circuit V2 connected to the avalanche photodiode APD2 for detecting light, for applying a voltage difference of a breakdown voltage generated between the anode and the cathode of the first diode APD1 minus a constant voltage to the avalanche photodiode. The constant voltage is substantially independent from current flowing in the avalanche photodiode APD2 for detecting light to the avalanche photodiode.
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公开(公告)号：AU1186100A
公开(公告)日：2000-06-13
申请号：AU1186100
申请日：1999-11-22
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , KAWAI TAKAAKI , TOZUKA HIROMICHI , HIRAYANAGI MICHITO
Abstract: A driving system region which is a region where a light projector, a light receiver, and a signal processing circuit are installed together is disposed on one side of an optical system region comprising a light-projecting region and a light-receiving region, so that wires such as their mutual signal lines are kept from passing through the optical system region, whereby an omnidirectional distance detecting apparatus capable of complete 360-degree omnidirectional distance detection can be obtained. The influence of electric noise caused by the driving system of rotary mechanism and the like upon light-receiving signals and the like is suppressed, whereby the accuracy in distance detection can be improved.
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公开(公告)号：DE69427494T2
公开(公告)日：2001-09-13
申请号：DE69427494
申请日：1994-07-08
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , NAKAMURA SHIGEYUKI , OHTA TSUYOSHI
Abstract: A bias circuit for applying a bias voltage to an avalanche photodiode APD2 for detecting light comprises a first diode APD1, a power supply VH connected to the first diode APD1, for applying a voltage to make the diode in breakdown between an anode and a cathode of the first diode APD1, and a constant voltage circuit V2 connected to the avalanche photodiode APD2 for detecting light, for applying a voltage difference of a breakdown voltage generated between the anode and the cathode of the first diode APD1 minus a constant voltage to the avalanche photodiode. The constant voltage is substantially independent from current flowing in the avalanche photodiode APD2 for detecting light to the avalanche photodiode.
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公开(公告)号：DE19983767T1
公开(公告)日：2001-11-22
申请号：DE19983767
申请日：1999-11-22
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , KAWAI TAKAAKI , TOZUKA HIROMICHI , HIRAYANAGI MICHITO
Abstract: A driving system region which is a region where a light projector, a light receiver, and a signal processing circuit are installed together is disposed on one side of an optical system region comprising a light-projecting region and a light-receiving region, so that wires such as their mutual signal lines are kept from passing through the optical system region, whereby an omnidirectional distance detecting apparatus capable of complete 360-degree omnidirectional distance detection can be obtained. The influence of electric noise caused by the driving system of rotary mechanism and the like upon light-receiving signals and the like is suppressed, whereby the accuracy in distance detection can be improved.
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公开(公告)号：DE69427494D1
公开(公告)日：2001-07-19
申请号：DE69427494
申请日：1994-07-08
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , NAKAMURA SHIGEYUKI , OHTA TSUYOSHI
Abstract: A bias circuit for applying a bias voltage to an avalanche photodiode APD2 for detecting light comprises a first diode APD1, a power supply VH connected to the first diode APD1, for applying a voltage to make the diode in breakdown between an anode and a cathode of the first diode APD1, and a constant voltage circuit V2 connected to the avalanche photodiode APD2 for detecting light, for applying a voltage difference of a breakdown voltage generated between the anode and the cathode of the first diode APD1 minus a constant voltage to the avalanche photodiode. The constant voltage is substantially independent from current flowing in the avalanche photodiode APD2 for detecting light to the avalanche photodiode.
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Patent Agency Ranking
公开(公告)号：JPH07297493A
公开(公告)日：1995-11-10
申请号：JP9153194
申请日：1994-04-28
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , KAWAI TAKAAKI
Abstract: PURPOSE:To provide a light-emitting device in which stable control for a constant light output can be performed. CONSTITUTION:Since a wavelength selecting filter 80 is provided in the front face of the light-receiving surface of a light-receiving element 50, only emitted light from the light-emitting element selectively passes through the wavelength selecting filter 80 to be incident upon the light-receiving element 50. When the disturbance light of wavelength different from the wavelength of the emitted light enters a package 60, the disturbance light is cut off by the wavelength selecting filter 80, and therefore it is not incident upon the light-receiving element 50. Accordingly, since almost all of of the disturbance light which enters the package 60 are not incident upon the light-receiving element 50, almost normal control for a constant light output can be performed even when the disturbance light enters the package 60.
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公开(公告)号：JP2011069726A
公开(公告)日：2011-04-07
申请号：JP2009221108
申请日：2009-09-25
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： NAKASE SHIGEKI , NAKAMURA SHIGEYUKI , SHIMANO HIROMI , HIRAYANAGI MICHIHITO , MATSUMOTO TAKUYA
Abstract: PROBLEM TO BE SOLVED: To provide a distance image acquisition apparatus which can suppress relative errors between pixels of distance images caused by the bending of a fiber bundle image guide. SOLUTION: The distance image acquisition apparatus 1 includes a flexible armored body 3, a light source 21, a first light-guide fiber 7, a second light-guide fiber 9, a fiber bundle image guide 11 for receiving reflected light and emitting it from a base face 11T, an optical path alteration member 15 for altering the optical path of light emitted from the light source 21 and making it incident onto the fiber bundle image guide 11 as self-calibration light 21E, a distance image sensor 23 for outputting a first output signal corresponding to a first light propagation delay time, and a signal processing part 25 for computing a distance image of an object to be measured 33. The signal processing part 25 computes a second light propagation delay time on the basis of a second output signal of the distance image sensor 23 which has received the self-calibration light 21E and calibrates a distance image for each plurality of pixels on the basis of this. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：提供一种可以抑制由纤维束图像引导件的弯曲引起的距离图像的像素之间的相对误差的距离图像获取装置。 解决方案：距离图像获取装置1包括柔性铠装体3，光源21，第一导光纤维7，第二导光纤维9，用于接收反射光的纤维束图像引导件11和 从基面11T发射的光路改变构件15，用于改变从光源21发射的光的光路并将其作为自校准光21E入射到纤维束图像引导件11上的光路改变构件15，距离图像传感器23 用于输出对应于第一光传播延迟时间的第一输出信号;以及信号处理部分25，用于计算待测物体33的距离图像。信号处理部分25基于以下步骤计算第二光传播延迟时间 基于此，已经接收到自校准光21E的距离图像传感器23的第二输出信号并且针对每个多个像素校准距离图像。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2008275386A
公开(公告)日：2008-11-13
申请号：JP2007117445
申请日：2007-04-26
Applicant: Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
Inventor： NAKASE SHIGEKI , NAKAMURA SHIGEYUKI , SHIMANO HIROMI , MATSUMOTO TAKUYA , SAKAMOTO SHIGERU
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive and miniaturizable light wave range finder having a wide measuring range from a short distance to a long distance.
SOLUTION: This range finder is equipped with a light emitting element 11 for emitting measuring light 30; a floodlighting optical element 15 for collimating the measuring light 30; a light separation surface 181 for separating incident light into reflected light and transmitted light; a light reflection surface 182 for reflecting the measuring light 30 transmitted through the light separation surface 181 to reach a measuring object 21; a light receiving optical element 16 for receiving, condensing and emitting the first return light 321 formed by reflection of return light 32 by the light separation surface 181 and the second return light 322 formed by reflection of the return light 32 by the light reflection surface 182; and a light receiving element 12 for converting light condensed by the light receiving optical element 16 into an electric signal. The range finder has a characteristic wherein, when light is allowed to enter the light separation surface 181, the intensity of light reflected by the light separation surface 181 is less than the intensity of light reflected by the light reflection surface 182 after being transmitted through the light separation surface 181.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：提供一种从短距离到远距离具有宽测量范围的便宜且可小型化的光波测距器。 解决方案：该测距仪装备有用于发射测量光30的发光元件11; 用于准直测量光30的泛光光学元件15; 用于将入射光分离成反射光和透射光的光分离表面181; 用于反射透过光分离表面181的测量光30到达测量对象21的光反射表面182; 光接收光学元件16，用于接收，聚光和发射由光分离表面181反射返回光32所形成的第一返回光321和通过光反射表面182由返回光32反射而形成的第二返回光322 ; 以及用于将由光接收光学元件16聚光的光转换成电信号的光接收元件12。 测距仪具有这样的特征，其中当光允许进入光分离表面181时，由光分离表面181反射的光的强度小于在透过光分离表面181之后由光反射表面182反射的光的强度 光分离面181.版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2000186928A
公开(公告)日：2000-07-04
申请号：JP36485398
申请日：1998-12-22
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SAKAMOTO SHIGERU , NAKAMURA SHIGEYUKI , NAKASE SHIGEKI , TOMITA TAKAFUMI
Abstract: PROBLEM TO BE SOLVED: To provide a light wave range finder, having stable range detection precision over a wide range of measurement ranges. SOLUTION: This light wave range finder has a coaxial optical system, comprising a projection optical system and a light-receiving optical system, wherein a light projector 10, a light receiver 20 and a light-receiving lens 21 are disposed coaxially. The light-receiving lens 21 is formed such that each lens portion of the light-receiving lens 21 varies from the lens portion for close range detection (i.e., a lens portion for condensing reflected light from a detection point at a small measurement range onto the light receiver 20) to the lens portion for far range detection (i.e., a lens portion for condensing reflected light from a detection point at a large measurement range onto the light receiver 20), going from the detection optical axis toward the outside. Thereby toward the change of a received light amount condensed onto and detected by the light receiver 20 of the reflected light according to the measurement range can be suppressed. As a result, the light wave range finder having stable range detection accuracy over a large scope of measurement ranges is realized.
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公开(公告)号：JPH095157A
公开(公告)日：1997-01-10
申请号：JP15786895
申请日：1995-06-23
Applicant: HAMAMATSU PHOTONICS KK
Inventor： NAKASE SHIGEKI , NAKAMURA SHIGEYUKI , SHIMANO HIROMI
Abstract: PURPOSE: To provide an infrared detector which detects infrared rays stably and accurately with a simple structure. CONSTITUTION: An input light synchronizing section 100 generates pulse-like infrared rays cyclically to be outputted to a pyroelectric element 210. The pyroelectric element 210 captures changes in surface electric charge due to a rise or drop in temperature corresponding to the amount of incident infrared rays according to incidence or non-incidence of the infrared rays generated by the input light synchronizing section 100 by means of a pyroelectric effect. An output signal of the pyroelectric element 210 reflecting such changes in the surface electric charge is inputted into a synchronous detection part 300. On the other hand, after initial change of dependence on temperature of the output signal of the pyroelectric element 210, the input light synchronizing section makes sample indicative signals X and Y significant and directs the synchronous detection part 300 to perform a sampling. The synchronous detection part 300 executes a synchronous amplification according to the sampling indicative signals and a synchronous amplification signal S2 is smoothed by a smoothing circuit 400.
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