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公开(公告)号：US20150108328A1
公开(公告)日：2015-04-23
申请号：US14061557
申请日：2013-10-23
Applicant: General Electric Company
Inventor： Jianjun Guo , Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , Sergei Ivanovich Dolinsky
CPC classification number: H04N5/361 , G01J1/18 , G01J2001/186 , G01J2001/444 , G01T1/249 , H01L31/02164 , H04N5/2176
Abstract: A compensating current is applied at one or more points in a signal processing path to compensate for one or both of a dark or offset current present in an input signal. In certain implementations, the dark or offset current is present in a signal generated by a photomultiplier device. The dark or offset current may be monitored in an output of the signal processing path and, the monitoring being used to determine how much compensation is needed in the signal processing path and to allocate where in the signal processing path the compensation current will be applied.
Abstract translation: 在信号处理路径中的一个或多个点处施加补偿电流以补偿输入信号中存在的暗或偏移电流中的一个或两个。 在某些实施方案中，暗或偏移电流存在于由光电倍增器装置产生的信号中。 可以在信号处理路径的输出中监视暗或偏移电流，并且监视用于确定在信号处理路径中需要多少补偿并且在信号处理路径中分配补偿电流将被施加的位置。
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2.发明申请LIGHT BEAM DETECTION CIRCUIT, LIGHT BEAM SCAN UNIT AND IMAGE FORMING APPARATUS 有权光束检测电路，光束扫描单元和图像形成装置公开(公告)号：US20140363207A1
公开(公告)日：2014-12-11
申请号：US14369347
申请日：2012-12-17
Applicant: Sharp Kabushiki Kaisha
Inventor： Kazutaka Matsumoto
IPC: G03G15/043 , G01J1/18 , G02B26/12
CPC classification number: G03G15/043 , B41J2/44 , G01J1/18 , G01J2001/186 , G02B26/10 , G02B26/127 , G06K15/1219 , H04N1/113
Abstract: In order to detect a passage timing of a light beam and to suppress cost, a light beam detection circuit (2) includes a detection signal generation section (34) configured to receive a light beam for scanning of a scanning target (101A) with one optical sensor (10), and generate a detection signal corresponding to an amount of received light; a reference signal output section (44) configured to output a reference signal that is in proportion to a light-amount control signal of a light-emission element (LD1) that emits the light beam; and a synchronizing signal generation section (35) configured to compare a detection signal generated by the detection signal generation section (34) with a reference signal output from the reference signal output section (44) to generate a synchronizing signal to determine a position to start scanning of the scanning target (101A) with the light beam.
Abstract translation: 为了检测光束的通过定时并抑制成本，光束检测电路（2）包括检测信号生成部（34），被配置为接收用于扫描目标（101A）的扫描光束的光束 光传感器（10），并产生对应于接收光量的检测信号; 参考信号输出部（44），被配置为输出与发出光束的发光元件（LD1）的光量控制信号成比例的参考信号; 以及同步信号生成部（35），被配置为将由检测信号生成部（34）生成的检测信号与从基准信号输出部（44）输出的基准信号进行比较，生成同步信号， 用光束扫描扫描目标（101A）。
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公开(公告)号：US12000732B2
公开(公告)日：2024-06-04
申请号：US18100147
申请日：2023-01-23
Applicant: UT-Battelle, LLC
Inventor： Brian P. Williams
CPC classification number: G01J1/18 , G01J1/4228 , G06F7/588 , H05B47/11 , G01J2001/186 , G01J2001/444 , G01J2001/446
Abstract: A system and method with AC coupling that reserves photodiode bandwidth in a biased configuration, allows optimal transimpedance amplifier performance, retains DC signal measurement capability, and does not introduce noise into the balanced detection signal.
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公开(公告)号：US09407843B2
公开(公告)日：2016-08-02
申请号：US14061557
申请日：2013-10-23
Applicant: General Electric Company
Inventor： Jianjun Guo , Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , Sergei Ivanovich Dolinsky
CPC classification number: H04N5/361 , G01J1/18 , G01J2001/186 , G01J2001/444 , G01T1/249 , H01L31/02164 , H04N5/2176
Abstract: A compensating current is applied at one or more points in a signal processing path to compensate for one or both of a dark or offset current present in an input signal. In certain implementations, the dark or offset current is present in a signal generated by a photomultiplier device. The dark or offset current may be monitored in an output of the signal processing path and, the monitoring being used to determine how much compensation is needed in the signal processing path and to allocate where in the signal processing path the compensation current will be applied.
Abstract translation: 在信号处理路径中的一个或多个点处施加补偿电流以补偿输入信号中存在的暗或偏移电流中的一个或两个。 在某些实施方案中，暗或偏移电流存在于由光电倍增器装置产生的信号中。 可以在信号处理路径的输出中监视暗或偏移电流，并且监视用于确定在信号处理路径中需要多少补偿并且在信号处理路径中分配补偿电流将被施加的位置。
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5.发明授权Light beam detection circuit, light beam scan unit and image forming apparatus to detect light beam that changes light-amount thereof 有权光束检测电路，光束扫描单元和图像形成装置，用于检测改变其光量的光束公开(公告)号：US09170521B2
公开(公告)日：2015-10-27
申请号：US14369347
申请日：2012-12-17
Applicant: Sharp Kabushiki Kaisha
Inventor： Kazutaka Matsumoto
IPC: B41J2/47 , G03G15/04 , G03G15/043 , B41J2/44 , G02B26/10 , H04N1/113 , G06K15/12 , G01J1/18 , G02B26/12
CPC classification number: G03G15/043 , B41J2/44 , G01J1/18 , G01J2001/186 , G02B26/10 , G02B26/127 , G06K15/1219 , H04N1/113
Abstract: In order to detect a passage timing of a light beam and to suppress cost, a light beam detection circuit (2) includes a detection signal generation section (34) configured to receive a light beam for scanning of a scanning target (101A) with one optical sensor (10), and generate a detection signal corresponding to an amount of received light; a reference signal output section (44) configured to output a reference signal that is in proportion to a light-amount control signal of a light-emission element (LD1) that emits the light beam; and a synchronizing signal generation section (35) configured to compare a detection signal generated by the detection signal generation section (34) with a reference signal output from the reference signal output section (44) to generate a synchronizing signal to determine a position to start scanning of the scanning target (101A) with the light beam.
Abstract translation: 为了检测光束的通过定时并抑制成本，光束检测电路（2）包括检测信号生成部（34），被配置为接收用于扫描目标（101A）的扫描光束的光束 光传感器（10），并产生对应于接收光量的检测信号; 参考信号输出部（44），被配置为输出与发出光束的发光元件（LD1）的光量控制信号成比例的参考信号; 以及同步信号生成部（35），被配置为将由检测信号生成部（34）生成的检测信号与从基准信号输出部（44）输出的基准信号进行比较，生成同步信号， 用光束扫描扫描目标（101A）。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20150168211A1
公开(公告)日：2015-06-18
申请号：US14414718
申请日：2013-08-01
Applicant: NEC CORPORATION
Inventor： Rintaro Nomura
IPC: G01J1/18
CPC classification number: G01J1/18 , G01J1/44 , G01J2001/186 , G01J2001/444 , G01J2001/4466 , H03M1/1038 , H04B10/69
Abstract: The objective of the present invention is to quickly and precisely correct the measured value for light reception power to the actual value with few resources, by installing a correction device for a light reception power monitor for signal light in an optical module. The correction device is equipped with a correction table which is referenced when correcting the measured value for the light reception power of signal light, and in this correction table multiple correction values are stored in advance on the basis of the correspondence relationships between multiple reference values and multiple actual values. In the correction table, for segments wherein the change in the actual values with respect to the change in the measured values is small, the interval between the reference values is made smaller and more correction values are stored than for segments wherein the change in the actual values with respect to the change in the measured values is large. When an input value indicating the measured value for the light reception power of the signal light matches a reference value in the correction table, the correction device reads from the correction table the correction value corresponding to the reference value. When an input value does not match a reference value in the correction table, the correction device calculates a correction value in accordance with a prescribed calculation formula on the basis of the input value.
Abstract translation: 本发明的目的是通过在光学模块中安装用于信号光的光接收功率监视器的校正装置，以很少的资源将光接收功率的测量值快速和精确地校正为实际值。 校正装置配备有校正表，其在校正信号光的光接收功率的测量值时参考，并且在该校正表中，根据多个参考值与多个参考值之间的对应关系预先存储多个校正值 多个实际值。 在校正表中，对于其中实际值相对于测量值的变化的变化小的段，使参考值之间的间隔变小并且存储更多的校正值而不是实际值的变化 关于测量值的变化的值很大。 当指示信号光的光接收功率的测量值的输入值与校正表中的参考值相匹配时，校正装置从校正表读取与参考值对应的校正值。 当校正表中的输入值与参考值不匹配时，校正装置根据输入值根据规定的计算公式计算校正值。
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公开(公告)号：US20130187029A1
公开(公告)日：2013-07-25
申请号：US13714032
申请日：2012-12-13
Applicant: Semiconductor Components Industries, LLC
Inventor： Yoshihisa Tabuchi , Yasunori Nagata
IPC: G01J1/42
CPC classification number: G01J1/4228 , G01J1/18 , G01J1/44 , G01J2001/186
Abstract: A photodetector control circuit in a photodetector for detecting light from a photodiode using a phototransistor and controls drive of the photodiode and detection of a current of the phototransistor has a received light amount detecting unit that detects a detection current, which flows through the phototransistor in accordance with a received light amount, by converting the detection current into a detection voltage, and compares the detection voltage with a reference voltage detected during reception of a reference light amount, to thereby detect a change in the received light amount, a diode current control unit for controlling a diode current that is caused to flow through the photodiode, and a control unit that detects a temperature based on a forward drop voltage of the photodiode and estimates a current change rate of the phototransistor based on the detected temperature.
Abstract translation: 光电检测器控制电路，用于使用光电晶体管检测来自光电二极管的光并控制光电二极管的驱动和光电晶体管的电流的检测，具有：接收光量检测单元，其检测根据光电晶体管流过的检测电流 通过将检测电流转换为检测电压，并将检测电压与在接收参考光量期间检测到的参考电压进行比较，从而检测接收光量的变化，二极管电流控制单元 用于控制流过光电二极管的二极管电流;以及控制单元，其基于光电二极管的正向压降电压检测温度，并基于检测到的温度估计光电晶体管的电流变化率。
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公开(公告)号：US5012097A
公开(公告)日：1991-04-30
申请号：US372769
申请日：1989-06-29
Applicant: Minoru Oda
Inventor： Minoru Oda
CPC classification number: H04B10/077 , G01J1/42 , H04B10/508 , G01J2001/186 , G01J2001/4426
Abstract: Described is herein a radiation measuring apparatus in which a detected pulse signal having a wave height value proportional to energy of radiation is transmitted through an optical fiber and a detected pulse signal received from the optical fiber is supplied to an external apparatus. Even if the transmission loss of the optical fiber is subjected to change with passage of time, a monitor pulse signal having a polarity reverse to that of a detected pulse signal is overlapped on the detected pulse signal lest the wave height of the detected pulse signal be not varied on the transmitting side, and a wave height value of a monitor pulse signal passed through the optical fiber is detected to compensate the wave height of the received detected pulse signal using the detected value.
Abstract translation: 这里描述了一种辐射测量装置，其中具有与辐射能量成比例的波高值的检测脉冲信号通过光纤传输，并且从光纤接收的检测脉冲信号被提供给外部设备。 即使光纤的传输损耗随时间而变化，具有与检测到的脉冲信号的极性相反的极性的监视脉冲信号与检测到的脉冲信号重叠，从而检测到的脉冲信号的波高为 在发送侧不变化，并且检测通过光纤的监视脉冲信号的波高值，以使用检测值补偿接收的检测脉冲信号的波高。
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公开(公告)号：US11852524B2
公开(公告)日：2023-12-26
申请号：US17644185
申请日：2021-12-14
Inventor： Atsushi Horiguchi
IPC: G01J1/18
CPC classification number: G01J1/18 , G01J2001/186
Abstract: An optical measurement apparatus having an improved light intensity detection performance is provided. The optical measurement apparatus includes a light receiving element capable of converting a light intensity of light to be analyzed into an electrical signal; an input terminal to which the electrical signal is input; a first amplifier and a nonlinear element configuring a logarithmic amplifier; offset resistors; a switch unit; and a controller. An inverting input terminal of the first amplifier is electrically connected to the input terminal. The offset resistors have different resistance values. The switch unit can switch an offset resistor electrically connected between the voltage source and the input terminal, of the offset resistors. An offset current is input to the input terminal by the offset resistor electrically connected between the voltage source and the input terminal. The controller measures the light intensity based on an output voltage value of the first amplifier.
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10.发明申请公开(公告)号：US20170261373A1
公开(公告)日：2017-09-14
申请号：US15604838
申请日：2017-05-25
Applicant: PINNACLE IMAGING CORPORATION
IPC: G01J1/44 , G01J1/18 , H01L27/146 , H03M1/34
CPC classification number: G01J1/44 , G01J1/18 , G01J2001/186 , G01J2001/446 , H01L27/14609 , H03M1/34
Abstract: A light-detecting device and method for converting optical radiation on switched conductivity diodes. The device comprises one or more photosensitive cells connected to address and signal lines, each cell comprising the following elements connected in series: a photodetector, an initial charge input circuit, a charge converter for converting the charge generated by the photodetector signal in addition to the initial charge into photodetector output voltage, a comparator which converts the difference between the photodetector output voltage and reference voltage into a digital cell signal, a reading circuit for reading the digital cell signal through the address lines and the signal lines, a circuit for generating digital codes of the cell signal, a random access memory for storing the digital codes, a reading circuit for reading the digital codes of the cell signals on one or more outputs of the light-detecting device.
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