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公开(公告)号：US5327210A
公开(公告)日：1994-07-05
申请号：US22790
申请日：1993-02-23
Applicant: Yoshihiro Okui , Kazuhiko Naruse , Taketoshi Kawamura , Shinji Shimizu , Mikio Uematsu , Hiroshi Furukawa , Izumi Horie
Inventor： Yoshihiro Okui , Kazuhiko Naruse , Taketoshi Kawamura , Shinji Shimizu , Mikio Uematsu , Hiroshi Furukawa , Izumi Horie
CPC classification number: G01J1/02 , G01J1/0228 , G01J1/44 , G01J2001/444 , G01J2001/446
Abstract: A light measurement device includes a photoelectric converter for receiving light from an object to be measured and converting the light to a measuring electrical energy in accordance with the intensity of the light, an offset amount measurement device for measuring the offset amount of the photoelectric converter, temperature measurement device for measuring a first temperature of the photoelectric converter when measuring the offset amount, and a second temperature of the photoelectric converter when measuring the light from the object, a memory device for storing a characteristic of the photoelectric converter with respect to temperature, correction amount calculation device for calculating a correction amount based on the characteristic, the first temperature, and the second temperature, and a light intensity calculation device for calculating a light intensity based on the measuring electrical energy, the offset amount, and the correction amount.
Abstract translation: 光测量装置包括用于接收来自被测量物体的光的光电转换器，并根据光的强度将光转换成测量电能;测量光电转换器偏移量的偏移量测量装置， 温度测量装置，用于当测量偏移量时测量光电转换器的第一温度，以及当测量来自物体的光时光电转换器的第二温度，存储光电转换器相对于温度的特性的存储器件， 校正量计算装置，用于基于特性，第一温度和第二温度计算校正量;以及光强度计算装置，用于基于测量电能，偏移量和校正量来计算光强度。
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公开(公告)号：US5106190A
公开(公告)日：1992-04-21
申请号：US405248
申请日：1989-09-11
Applicant: Toshiaki Fukuma
Inventor： Toshiaki Fukuma
CPC classification number: G01J1/16 , G01J3/42 , G01J2001/4242 , G01J2001/4406 , G01J2001/446
Abstract: A spectrophotometer comprising a light source, a spectroscope which separates the light of light source depending on the wavelengths, chops the light into the first and second light beams and allows the light beams to pass through the reference cell and sample cell, a photodiode which alternately receives the light beams from the reference cell and sample cell, a variable gain amplifier which amplifies a light current of photodiode, an A/D converter which converts and guides the reference output and sample output as the digital values synchronously with the chopping period, and a again setter which sets the gain of the variable gain amplifier depending on the reference output value from the A/D converter.
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113.发明授权Apparatus for measuring light output from semiconductor light emitting element 失效用于测量来自半导体发光元件的光输出的装置
公开(公告)号：US5065007A
公开(公告)日：1991-11-12
申请号：US571158
申请日：1990-08-23
Applicant: Toshiaki Tanaka
Inventor： Toshiaki Tanaka
CPC classification number: G01J1/42 , G01J2001/4252 , G01J2001/446
Abstract: A first ohmic electrode of a light emitting diode is put into contact with an electrode plate, and a second ohmic electrode of the same is put into contact with a mesh electrode formed by a metal net. The mesh electrode is mounted on a light receiving surface of the light receiving element. When a predetermined amount of current is supplied from a power source to the mesh electrode and electrode plate, light is emitted from that portion of the light emitting diode located around the second ohmic electrode, and the light passes through the spaces of the mesh electrode, then being received by the light receiving element. The light receiving element supplies an electric signal indicative of the light to a measuring circuit, whereby the output of the light emitting diode is measured.
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公开(公告)号：US4847483A
公开(公告)日：1989-07-11
申请号：US137616
申请日：1987-12-24
Applicant: Takashi Nishibe , Shotaro Yokoyama
Inventor： Takashi Nishibe , Shotaro Yokoyama
CPC classification number: G01J1/44 , G01J2001/4406 , G01J2001/446
Abstract: A device for measuring the intensity of light received by a photosensor comprises a photosensor for receiving light and producing a corresponding current and a circuit for integrating the current so that the intensity of the received light is indicated as the time required for the integration value of the integrating circuit to reach a predetermined value. If the intensity of the light is determined to be high at the start of the integration operation the integration value is set to the smaller of two predetermined values. If the intensity of the light is low, the integration value is set to a larger value.
Abstract translation: 用于测量由光电传感器接收的光的强度的装置包括用于接收光并产生相应电流的光电传感器和用于积分电流的电路，使得接收的光的强度被指示为所述接收光的积分值所需的时间 积分电路达到预定值。 如果在积分操作开始时将光的强度确定为高，则将积分值设置为两个预定值中的较小值。 如果光的强度低，则积分值被设定为较大的值。
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公开(公告)号：US4740080A
公开(公告)日：1988-04-26
申请号：US714310
申请日：1985-03-21
Applicant: Joseph P. Donohue , Mitchell S. Budniak
Inventor： Joseph P. Donohue , Mitchell S. Budniak
CPC classification number: G01N21/27 , G01J2001/446
Abstract: A device for producing a digital representation of an analog signal in apparatus for use in analyzing samples of biological material. The apparatus conducts such analysis by optical techniques, whereby an analog signal is generated which corresponds to the strength of a light component impinging a light responsive element.
Abstract translation: 一种用于在用于分析生物材料样品的装置中产生模拟信号的数字表示的装置。 该装置通过光学技术进行这种分析，由此产生对应于照射光响应元件的光成分的强度的模拟信号。
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Patent Agency Ranking
公开(公告)号：US4708477A
公开(公告)日：1987-11-24
申请号：US829273
申请日：1986-02-13
Applicant: Yabusaki Kenji , Tozawa Hitoshi , Noda Akira , Ito Takashi
Inventor： Yabusaki Kenji , Tozawa Hitoshi , Noda Akira , Ito Takashi
CPC classification number: G01J1/04 , G01J1/02 , G01J1/0228 , G01J1/0455 , G01J1/0466 , G01J1/08 , G01J3/02 , G01J3/0232 , G01J3/0243 , G01J3/0248 , G01J3/027 , G01J3/1804 , G01J3/42 , G01J2001/086 , G01J2001/4453 , G01J2001/446
Abstract: A photometrical apparatus has a first light receiving element, and a second light receiving element less sensitive to temperature and other environmental influences than said first light receiving element whereby a value Pm of measured quantity of light from the subject is calculated from the following formula ##EQU1## Pr designates a quantity of light from a standard light source, Dr and Dm designate outputs of the first light receiving element generated by the light from the standard light source and the subject, Dpo and Dpt designate outputs of the first light receiving element generated by the light from the reference light source and the subject, and Dso and Dst designate outputs of the second light receiving element generated by the light from the reference light source and the subject.
Abstract translation: 光度测量装置具有第一光接收元件和对所述第一光接收元件的温度和其他环境影响不敏感的第二光接收元件，从而根据以下公式计算来自被摄体的测量光量的值Pm Pr表示来自标准光源的光量，Dr和Dm表示由来自标准光源和被摄体的光产生的第一光接收元件的输出，Dpo和Dpt表示由第一光接收元件产生的第一光接收元件的输出， 来自参考光源和被摄体的光，Dso和Dst表示由来自参考光源和被摄体的光产生的第二光接收元件的输出。
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公开(公告)号：US4621204A
公开(公告)日：1986-11-04
申请号：US634574
申请日：1984-07-26
Applicant: Mark C. Loessel , Randall W. Miller , Robert W. Myers
Inventor： Mark C. Loessel , Randall W. Miller , Robert W. Myers
CPC classification number: G01N21/27 , G01J1/44 , H03M1/445 , G01J1/46 , G01J2001/446 , G01N2021/478 , G01N2201/126
Abstract: A sensor-integrator circuit having a sensor for producing a current varying in accordance with the sensed parameter or a reference current source, a comparator having inverting and noninverting inputs and an output and charge storage device coupled to the inverting input. The circuit is energized to obtain a given positive steady state reset voltage, a reference voltage is applied to the noninverting input of a comparator which is less positive than the steady state voltage and integration is initiated solely by alternately applying the current from the sensor and the reference current to the inverting input of the comparator.
Abstract translation: 一种传感器积分电路，其具有用于产生根据感测参数或参考电流源变化的电流的传感器，具有反相和同相输入的比较器以及耦合到反相输入的输出和电荷存储装置。 电路通电以获得给定的正稳态复位电压，参考电压施加到比稳态电压小正比的比较器的非反相输入，并且仅通过交替施加来自传感器的电流和 参考电流到比较器的反相输入。
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公开(公告)号：US20240328851A1
公开(公告)日：2024-10-03
申请号：US18128397
申请日：2023-03-30
Applicant: XILINX, INC.
Inventor： Zhaowen WANG , Mayank RAJ
IPC: G01J1/44
CPC classification number: G01J1/44 , G01J2001/446
Abstract: An integrated circuit (IC) device includes a controller circuitry having an input connected to a photodiode of an optoelectronic circuitry and an output connected to a biasing circuitry, the biasing circuitry having an input connected to the output of the controller circuitry, the controller circuitry configured to transmit a transimpedance control signal code to the biasing circuitry configured to cause the biasing circuitry to offset a DC current component of the output of the photodiode.
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公开(公告)号：US12107099B2
公开(公告)日：2024-10-01
申请号：US18347257
申请日：2023-07-05
Inventor： François Ayel
IPC: H01L27/146 , G01J1/44 , H04N25/772 , H04N25/78
CPC classification number: H01L27/14612 , G01J1/44 , H01L27/14609 , G01J2001/446 , G01J2001/448 , H01L27/14634 , H04N25/772 , H04N25/78
Abstract: A light sensor (4) in which each of its pixels comprises: first and second MOS transistors (T1, T2) series-connected through their sources (S), a gate of the second transistor (T2) receiving a comparative voltage (Vcmp); a first current source (104) series-connected with said transistors (T1, T2) between a first supply voltage (GND) and a second supply voltage (VDD2); a third MOS transistor (T3) and a second current source (108) series-connected between a third supply voltage (GND) and a fourth supply voltage (VDD1), wherein the third transistor (T3) has a gate connected to a connection node (106) of the first current source (104) to the first and second transistors (T1, T2); a photodiode (PD) coupled to a gate of the first transistor (T1); and a switch (RST) connected to the gate of the first transistor (T1).
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公开(公告)号：US12104949B1
公开(公告)日：2024-10-01
申请号：US18128397
申请日：2023-03-30
Applicant: XILINX, INC.
Inventor： Zhaowen Wang , Mayank Raj
IPC: G01J1/44
CPC classification number: G01J1/44 , G01J2001/446
Abstract: An integrated circuit (IC) device includes a controller circuitry having an input connected to a photodiode of an optoelectronic circuitry and an output connected to a biasing circuitry, the biasing circuitry having an input connected to the output of the controller circuitry, the controller circuitry configured to transmit a transimpedance control signal code to the biasing circuitry configured to cause the biasing circuitry to offset a DC current component of the output of the photodiode.
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