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公开(公告)号：US07642496B2
公开(公告)日：2010-01-05
申请号：US10540476
申请日：2003-12-25
申请人： Yasuhiro Suzuki , Seiichiro Mizuno
发明人： Yasuhiro Suzuki , Seiichiro Mizuno
IPC分类号： H04N3/14
CPC分类号： G01J1/46 , H01L27/14634 , H01L27/14663 , H01L2224/16 , H04N5/235
摘要： The present invention aims at providing a photodetector which can detect the incident light intensity with a high speed while having a wide dynamic range for incident light intensity detection. Each photodiode PDm,n generates electric charges Q by an amount corresponding to the intensity of light incident thereon. An electric charge amount level determining circuit 10m,n is provided so as to correspond to the photodiode PDm,n, determines the level of the amount of electric charges Q generated by the photodiode PDm,n, and outputs a level signal Level indicative of the result of level determination. The capacitance value of the integral capacitance part 21 in the integrating circuit 20m is set by the respective level signals Level sequentially fed from N electric charge amount level determining circuits 10m,1 to 10m,N. The integrating circuit 20m accumulates the electric charges Q fed to the input terminal sequentially from the N electric charge amount level determining circuits 10m,1 to 10m,N into the integral capacitance part 21, and outputs a voltage V20 corresponding to the amount of thus accumulated electric charges Q from the output terminal.
摘要翻译： 本发明的目的在于提供一种能够以高速度检测入射光强度而具有用于入射光强检测的宽动态范围的光检测器。 每个光电二极管PDm，n产生与入射在其上的光的强度对应的量的电荷Q。 设置电荷量水平确定电路10m，n，以便对应于光电二极管PDm，n决定由光电二极管PDm，n产生的电荷量Q的电平，并输出指示 水平测定结果。 积分电路20m中的积分电容部21的电容值由从N个电荷量电平判定电路10m，1〜10m，N顺序馈送的各电平信号电平来设定。 积分电路20m将从N个电荷量电平判定电路10m，1〜10m，N依次输入到输入端子的电荷Q累积到积分电容部21，并输出对应于这样积累的量的电压V20 来自输出端子的电荷Q。
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公开(公告)号：US07612814B2
公开(公告)日：2009-11-03
申请号：US10539067
申请日：2003-12-16
申请人： Yasuhiro Suzuki , Seiichiro Mizuno
发明人： Yasuhiro Suzuki , Seiichiro Mizuno
CPC分类号： H04N5/335
摘要： The present invention aims at providing a photodetector capable of fast operation with inclusion of A/D converting circuits. With a photodetector 1, (K×M×N) photodiodes PDk,m,n are arranged in M rows and (K×N) columns in a photodetection unit 10, and processes (electric charge accumulation, CDS, filtering, and A/D conversion) regarding each of the (K×N) photodiodes PDk,m,n (k=1 to K, n=1 to N) of each row are carried out successively at each time T. Meanwhile, each of an electric charge accumulation operation in an integrating circuit 20m,n, a CDS operation in a CDS circuit 30m,n, a filterng operation in a filter circuit 40m,n, and an A/D conversion operation in an A/D converter 50m,n is carried out at each time (N×T).
摘要翻译： 本发明的目的在于提供一种能够在包含A / D转换电路的情况下快速操作的光检测器。 利用光电检测器1，在光检测单元10中将（KxMxN）光电二极管PDk，m，n布置在M行和（KxN）列中，并且处理（电荷积累，CDS，滤波和A / D转换） 每行的连续执行各行的（KxN）光电二极管PDk，m，n（k = 1〜K，n = 1〜N）。另外，积分电路20m， n，CDS电路30m中的CDS操作，n，滤波器电路40m中的滤波运算，n和A / D转换器50m，n中的A / D转换操作在每次（NxT）执行。
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公开(公告)号：US20090268067A1
公开(公告)日：2009-10-29
申请号：US12515639
申请日：2007-11-20
IPC分类号： H04N5/335
摘要： A determination unit 70 determines whether there is incident light, based on an output value from an integrating circuit 62, and generates a determinated signal indicating a determinated result. A control unit 80 controls charge accumulating portions of an imaging light-receiving unit 10 whether or not to start accumulation of an electric charge, based on the determinated signal, and changes a charge accumulation capacitance value of the integrating circuit 62 of an output unit 60. Specifically, the control unit 80 varies the capacitance value for accumulation of an electric charge generated in a trigger light-receiving unit 20, depending upon the detection result on the presence/absence of incident light, to switch the sensitivity of the integrating circuit 62 to the trigger PD, thereby enabling optimal utilization of the trigger PD.
摘要翻译： 确定单元70基于来自积分电路62的输出值来确定是否存在入射光，并且产生指示确定结果的确定信号。 控制单元80基于确定的信号来控制成像光接收单元10的电荷累积部分是否开始积累电荷，并且改变输出单元60的积分电路62的电荷累积电容值 具体地说，控制单元80根据对入射光的存在/不存在的检测结果来改变在触发光接收单元20中产生的电荷的累积的电容值，以切换积分电路62的灵敏度 到触发器PD，从而实现触发器PD的最佳利用。
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公开(公告)号：US07535266B2
公开(公告)日：2009-05-19
申请号：US10491414
申请日：2002-10-02
申请人： Takashi Suzuki , Seiichiro Mizuno
发明人： Takashi Suzuki , Seiichiro Mizuno
CPC分类号： H01S5/042 , H01S5/0427
摘要： The circuit comprises an amplitude setting transistor 5Q for controlling the amplitude of high-frequency current I2QB flowing through the second current mirror circuit 2, by using an input of reference direct current signal Bias. Direct current component I4QB generated based on reference direct current signal Bias is subtracted from direct current I1 flowing through the other side line of the first current mirror circuit 1. In this case, level fluctuation of driving current IZ can be significantly suppressed, since the increment of the direct current component included in high-frequency current I2QB is proportional to direct current component I4QB which is subtracted from direct current I1 flowing through said other side line of the first current mirror circuit 1.
摘要翻译： 电路包括用于通过使用参考直流信号Bias的输入来控制流过第二电流镜电路2的高频电流I2QB的振幅的幅度设定晶体管5Q。 基于参考直流信号Bias产生的直流分量I4QB从流过第一电流镜电路1的另一侧线的直流电流I1中减去。在这种情况下，可以显着抑制驱动电流IZ的电平波动，因为增量 包含在高频电流I2QB中的直流分量与从流过第一电流镜电路1的另一侧线的直流电流I1相减的直流分量I4QB成比例。
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公开(公告)号：US07501611B2
公开(公告)日：2009-03-10
申请号：US11596072
申请日：2005-05-02
申请人： Seiichiro Mizuno , Yasuhiro Suzuki
发明人： Seiichiro Mizuno , Yasuhiro Suzuki
CPC分类号： H01L27/14601 , G01J1/18 , G01J1/46 , H04N5/235 , H04N5/355 , H04N5/3575 , H04N5/374 , H04N5/378
摘要： The present invention relates to a photodetector having a structure capable of increasing the dynamic range and of improving the S/N ratio for light detection. The photodetector includes a pixel including a photodiode, an integrating circuit, a CDS circuit, a selecting circuit, and a switching circuit. Charges generated by the photodiode are accumulated in an integral capacitor unit in the integrating circuit, and a first voltage value V1 corresponding to the amount of accumulated charge is outputted from the integrating circuit. The CDS circuit receives the first voltage value and outputs a second voltage value V2 corresponding to the variation of the first voltage value with reference to that at a reference time. The switching circuit compares the amount of charge generated by the photodiode with a threshold value therefor, and, based on the result of the comparison, instructs the integrating circuit to set the capacitance of the integral capacitor unit and instructs the selecting circuit to select one of the first and second voltages as an output voltage value.
摘要翻译： 本发明涉及具有能够增加动态范围和提高光检测的S / N比的结构的光电检测器。 光检测器包括具有光电二极管，积分电路，CDS电路，选择电路和开关电路的像素。 由积分电路中积分电容器单元累积由光电二极管产生的电荷，并从积分电路输出与累积电荷量对应的第一电压值V1。 CDS电路接收第一电压值，并参照在参考时刻的第一电压值输出与第一电压值的变化相对应的第二电压值V2。 开关电路将由光电二极管产生的电荷量与其阈值进行比较，并且基于比较结果，指示积分电路设置积分电容器单元的电容，并指示选择电路选择 第一和第二电压作为输出电压值。
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公开(公告)号：US20080259331A1
公开(公告)日：2008-10-23
申请号：US10580841
申请日：2004-11-24
申请人： Mitsuaki Kageyama , Katsumi Shibayama , Seiichiro Mizuno , Helmut Teichmann , Dietmar Hiller , Ulrich Starker
发明人： Mitsuaki Kageyama , Katsumi Shibayama , Seiichiro Mizuno , Helmut Teichmann , Dietmar Hiller , Ulrich Starker
IPC分类号： G01J3/10
CPC分类号： H01L27/1446 , G01J3/0243 , G01J3/0256 , G01J3/0291 , G01J3/2803
摘要： A photodiode array, having a plurality of photodiodes 12 (n-type channel regions 121), and a light entrance portion 13, formed of an opening that is used to make light to be detected by photodiodes 12 enter, are provided in a substrate 10 of a photodetector 1A having an n-type substrate 101 and a p-type epitaxial layer 102. Furthermore, a carrier capturing portion 60, for capturing carriers generated at a substrate portion near the light entrance portion 13 and removes the captured carriers to the exterior via an electrode 61, is arranged from a layer portion of the epitaxial layer 102 that is positioned between the photodiode array 11 and the light entrance portion 13. A photodetector of a simple arrangement, which, when applied to a spectrometer, enables the positioning precision of components of the spectrometer to be improved, and a spectrometer using this photodetector are thus realized.
摘要翻译： 具有多个光电二极管12（n型沟道区域121）的光电二极管阵列以及由用于使由光电二极管12检测出的光的开口形成的光入射部分13设置在基板10中 具有n型衬底101和p型外延层102的光电检测器1A。 此外，用于捕获在光入口部分13附近的基板部分处产生的载流子并且经由电极61将捕获的载流子移除到外部的载体捕获部分60从外延层102的位于 光电二极管阵列11和光入射部13。 一种简单布置的光电检测器，当应用于光谱仪时，可以提高光谱仪的部件的定位精度，从而实现使用该光电检测器的光谱仪。
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公开(公告)号：US20080083869A1
公开(公告)日：2008-04-10
申请号：US11605474
申请日：2006-11-29
申请人： Seiichiro Mizuno , Takayuki Suzuki
发明人： Seiichiro Mizuno , Takayuki Suzuki
IPC分类号： G01D5/34
CPC分类号： G01D5/3473 , G01D5/34784
摘要： There is provided an encoder in which the absolute angle can be detected with high accuracy even when the irradiated position of light to be detected with respect to a scale is displaced from a reference.In the encoder 1, a bright portion 19 in which the light to be detected is irradiated to an area containing half rounds of arrangement lines L1 and L2 of a scale plate 11 is formed and also a dark portion 20 to which no light to be detected is irradiated is formed in the area excluding the bright portion 19 by passing the light to be detected through a rotating plate 8 having a toothed gear with a semicircular opening portion 17 formed therein. Accordingly, in the encoder 1, even when the irradiated position of the light to be detected with respect to the scale plate 11 is displaced from the reference, the absolute angle of a measurement target can be detected with high accuracy by adding or subtracting the corrected amount based on the difference cc between the angle range corresponding to the width W at half maximum of the light intensity waveform P at the angle detection time and the reference angle range.
摘要翻译： 提供了一种编码器，其中即使当相对于标尺的待检测光的照射位置从参考偏移时，也可以高精度地检测绝对角度。 在编码器1中，形成有将被检测光照射到刻度盘11的包含半条排列线L 1和L 2的区域的亮部19，以及暗部20， 通过使具有形成有半圆形开口部17的齿轮的旋转板8通过待检测光，在除了亮部19之外的区域中形成被照射的被检测体。 因此，在编码器1中，即使将相对于标尺板11检测的光的照射位置偏离基准，也可以通过加上或者减去校正后的测量对象的绝对角度来高精度地检测测量对象的绝对角度 基于与角度检测时刻的光强度波形P的半值宽度W相对应的角度范围与基准角度范围之间的差值cc。
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公开(公告)号：US07176431B2
公开(公告)日：2007-02-13
申请号：US10549761
申请日：2004-02-10
IPC分类号： H01L27/00
CPC分类号： G06F3/042 , G01B11/00 , H01L27/14603 , H04N3/1506 , H04N5/335
摘要： A signal processing circuit 20 has switches 21, a shift register 22, and an integrating circuit 23, and outputs voltages Vout indicating luminance profiles in a second direction and in a first direction of light incident to a photosensitive region 10. The switches 21 are provided corresponding to groups of photosensitive portions on one side electrically connected among a plurality of pixels arrayed in the first direction and corresponding to groups of photosensitive portions on another side electrically connected among a plurality of pixels arrayed in the second direction. The shift register 22 is an element for sequentially reading electric currents from the groups of photosensitive portions on one side in the second direction and for sequentially reading electric currents from the groups of photosensitive portions on another side in the first direction. The integrating circuit 23 sequentially imports the electric currents from the groups of photosensitive portions on one side and the groups of photosensitive portions on another side sequentially read by the shift register 22, and converts the electric currents into voltages.
摘要翻译： 信号处理电路20具有开关21，移位寄存器22和积分电路23，并且输出指示第二方向上的亮度分布和入射到感光体的光的第一方向上的电压V OUT 区域10。 开关21设置成与沿着第一方向排列的多个像素电连接的一侧上的感光部分的组对应于与沿第二方向排列的多个像素电连接的另一侧的感光部分的组。 移位寄存器22是从第一方向的另一侧的感光部分组依次读取来自感光部分组的电流的元件。 积分电路23顺序地从一侧的感光部分组和由移位寄存器22顺序读取的另一侧的感光部分组的电流输入电流，并将电流转换成电压。
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公开(公告)号：US20060261245A1
公开(公告)日：2006-11-23
申请号：US10543016
申请日：2004-01-22
IPC分类号： H01L27/00
CPC分类号： H04N5/374 , H04N5/345 , H04N5/3742
摘要： A first integrating circuit 23 converts and outputs electric currents, which are successively input from first groups of photosensitive portions via first switches 21, into and as a voltage. A first CDS circuit 24 outputs a voltage that is in accordance with the variation amount of the voltage from the first integrating circuit 23. A first A/D conversion circuit 25 successively inputs the voltage from the first CDS circuit 24 and converts and outputs the voltage into and as digital values. A first digital memory 26 stores the digital values, which, among the digital values output from the first A/D conversion circuit 25, corresponds to a first period, and the digital values corresponding likewise to a second period and outputs the stored digital values to a first difference operational circuit 27. The first difference operational circuit 27 determines the differences between the digital values corresponding to the first period and the digital values corresponding to the second period that are output from the first digital memory 26 and outputs digital values corresponding to the differences.
摘要翻译： 第一积分电路23将从第一组感光部分经由第一开关21连续输入的电流转换并输出，并将其作为电压输出。 第一CDS电路24输出与来自第一积分电路23的电压的变化量相对应的电压。第一A / D转换电路25连续地输入来自第一CDS电路24的电压，并转换并输出电压 进入和作为数字值。 第一数字存储器26存储从第一A / D转换电路25输出的数字值对应于第一周期的数字值和与第二周期类似的数字值，并将所存储的数字值输出到 第一差分运算电路27.第一差分运算电路27确定对应于第一周期的数字值与从第一数字存储器26输出的对应于第二周期的数字值之间的差，并输出对应于 差异
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公开(公告)号：US07075338B2
公开(公告)日：2006-07-11
申请号：US10821272
申请日：2004-04-09
申请人： Seiichiro Mizuno , Takashi Suzuki , Tetsuya Taka
发明人： Seiichiro Mizuno , Takashi Suzuki , Tetsuya Taka
CPC分类号： H01S5/042 , H01S5/0428
摘要： A light emitting element driving circuit for supplying driving current I2 to a light emitting element 10 connected to one line 2 of a current mirror circuit 12 is equipped with a pulse generating circuit 20 connected to the other line 1 so that pulse current flows therethrough, and superposing means 30 for superposing a first auxiliary pulse current on the pulse current in synchronization with the rise-up time of the pulse current. The rise-up time is shortened by the superposition. In the driving circuit, a source follower circuit is connected to the current mirror circuit, and current flowing through the source follower circuit is set to be substantially proportional to current flowing through the other line of the current mirror circuit.
摘要翻译： 用于向与电流镜电路12的一条线2连接的发光元件10提供驱动电流I2的发光元件驱动电路配备有连接到另一条线1的脉冲发生电路20，使得脉冲电流流过其中， 用于与脉冲电流的上升时间同步地将脉冲电流上的第一辅助脉冲电流叠加的叠加装置30。 叠加时间缩短。 在驱动电路中，源极跟随器电路连接到电流镜电路，并且流过源极跟随器电路的电流被设置为与流过电流镜电路的另一条线的电流成比例。
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