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    2.
    发明专利
    未知

    公开(公告)号：DE69422866T2

    公开(公告)日：2000-06-29

    申请号：DE69422866

    申请日：1994-08-26

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： TAKESHIMA AKIRA ,  KOISHI MUSUBU ,  WARASHINA YOSHIHISA ,  MIZUSHIMA YOSHIHIKO

    IPC: G01S7/481 ,  G01S7/491 ,  G01S17/36 ,  G01S17/88 ,  G01S7/534

    Abstract: Laser light from LD (laser diode) is guided through a fiber to be projected onto a reflector. A receiver detects a return beam of modulated light reflected by the object and outputs a signal reflecting a phase difference between the laser light and the modulation signal. The frequency of the modulation signal is changed based on the signal value so as to finally achieve phase lock. When the phase lock fixes the frequency of the modulation signal, the frequency always corresponds to a distance from LD to the reflector or a group index of a substance filling the optical path. Thus, the distance to the object or the group index of the substance filling the optical path at the time of phase lock can be determined in a simple manner and with a high accuracy, based on the output frequency at the time of phase lock.

    OPTICAL ANALYSIS METHOD FOR HETEROGENEOUS MEDIUM
    3.
    发明专利
    OPTICAL ANALYSIS METHOD FOR HETEROGENEOUS MEDIUM 未知

    公开(公告)号：AU2002361113A1

    公开(公告)日：2003-07-15

    申请号：AU2002361113

    申请日：2002-12-26

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： MIZUSHIMA YOSHIHIKO ,  MATSUMOTO KAZUJI

    IPC: G01N21/31 ,  G01N21/49 ,  G01N21/27

    Abstract: This optical analysis method comprises a first step of making light having a known intensity I0 at a known wavelength incident on a medium; a second step of measuring an optical intensity upon reflection or optical intensity upon transmission emitted from the medium; a third step of executing the first and second steps at a plurality of wavelengths and recording the optical intensity as a measurement result; and a fourth step of calculating a target physical quantity by a predetermined arithmetic operation utilizing a known physical quantity stored in a database and the optical intensity.

    4.
    发明专利
    未知

    公开(公告)号：DE69028825T2

    公开(公告)日：1997-02-13

    申请号：DE69028825

    申请日：1990-06-20

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： MIZUSHIMA YOSHIHIKO ,  NAKAJIMA KAZUTOSHI ,  HIROHATA TORU ,  IIDA TAKASHI ,  WARASHINA YOSHIHISA ,  SUZUKI TOMOKO ,  KAN HIROFUMI

    IPC: G02F3/00 ,  G06E1/04 ,  G06F7/50 ,  G06F7/502

    Abstract: SUM and CARRY output signals of a first optical half adder are provided to one input terminal of a second optical half adder and an optical latch memory, respectively, and an output signal of the optical latch memory is provided to the other input terminal of the second optical half adder. Input and output of the two optical half adders and optical latch memory are performed through an optical signal. Each optical half adder includes two light-receiving elements each having a symmetrical electrode arrangement in which two Schottky junctions are connected to each other opposite in polarity, and peripheral elements of resistors, a capacitor and an amplifier. The optical latch memory is an optical flip-flop memory in which a high-speed light-receiving element produces an electric signal in response to an input optical signals, and a high-speed light-emitting element produces, in response to the electric signal guided from the light-receiving element, feed-back light to be applied to the light-receiving element and an output optical signal.

    5.
    发明专利
    未知

    公开(公告)号：DE69028825D1

    公开(公告)日：1996-11-14

    申请号：DE69028825

    申请日：1990-06-20

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： MIZUSHIMA YOSHIHIKO ,  NAKAJIMA KAZUTOSHI ,  HIROHATA TORU ,  IIDA TAKASHI ,  WARASHINA YOSHIHISA ,  SUZUKI TOMOKO ,  KAN HIROFUMI

    IPC: G02F3/00 ,  G06E1/04 ,  G06F7/50 ,  G06F7/502

    Abstract: SUM and CARRY output signals of a first optical half adder are provided to one input terminal of a second optical half adder and an optical latch memory, respectively, and an output signal of the optical latch memory is provided to the other input terminal of the second optical half adder. Input and output of the two optical half adders and optical latch memory are performed through an optical signal. Each optical half adder includes two light-receiving elements each having a symmetrical electrode arrangement in which two Schottky junctions are connected to each other opposite in polarity, and peripheral elements of resistors, a capacitor and an amplifier. The optical latch memory is an optical flip-flop memory in which a high-speed light-receiving element produces an electric signal in response to an input optical signals, and a high-speed light-emitting element produces, in response to the electric signal guided from the light-receiving element, feed-back light to be applied to the light-receiving element and an output optical signal.

    Measuring fluorescence characteristics
    8.
    发明专利
    Measuring fluorescence characteristics 未知

    公开(公告)号：GB2231958A

    公开(公告)日：1990-11-28

    申请号：GB9007810

    申请日：1990-04-06

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： KOISHI MUSUBU ,  WATANABE MOTOYUKI ,  MIZUSHIMA YOSHIHIKO ,  KAN HIROFUMI

    IPC: G01J11/00 ,  G01N21/64

    Abstract: A fluorescent characteristic inspecting apparatus comprises a light source 12 for exciting a specimen via an optical system 14; a device 16 for moving the measurement position of the specimen; an optical system 18 applying photoluminescence from the specimen to a high speed optical detector 20 for detecting data on a time intensity waveform of the photoluminescence in synchronization with the operation of the light source; and a signal processing device 22 for analyzing the data on the time intensity waveform at a plurality of measurement points to obtain the spatial intensity distribution and lifetime distribution of the photoluminescence or the correlation distribution of both. A spectroscope 60 may be placed in front of a 2-D streak camera 20 which is triggered by a signal from a photodiode viewing a pulsed light source 12. A CCD camera viewing a fluorescent screen on the streak camera obtains the time and wavelength distribution of fluorescence from each point of the specimen.

    9.
    发明专利
    未知

    公开(公告)号：DE69422866D1

    公开(公告)日：2000-03-09

    申请号：DE69422866

    申请日：1994-08-26

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： TAKESHIMA AKIRA ,  KOISHI MUSUBU ,  WARASHINA YOSHIHISA ,  MIZUSHIMA YOSHIHIKO

    IPC: G01S7/481 ,  G01S7/491 ,  G01S17/36 ,  G01S17/88 ,  G01S7/534

    Abstract: Laser light from LD (laser diode) is guided through a fiber to be projected onto a reflector. A receiver detects a return beam of modulated light reflected by the object and outputs a signal reflecting a phase difference between the laser light and the modulation signal. The frequency of the modulation signal is changed based on the signal value so as to finally achieve phase lock. When the phase lock fixes the frequency of the modulation signal, the frequency always corresponds to a distance from LD to the reflector or a group index of a substance filling the optical path. Thus, the distance to the object or the group index of the substance filling the optical path at the time of phase lock can be determined in a simple manner and with a high accuracy, based on the output frequency at the time of phase lock.

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