Wide dynamic range optical power detector
    21.
    发明授权
    Wide dynamic range optical power detector 有权
    宽动态范围光功率检测器

    公开(公告)号:US06677570B1

    公开(公告)日:2004-01-13

    申请号:US09847506

    申请日:2001-05-02

    CPC classification number: G01J1/4257 G01J1/02 G01J1/0252

    Abstract: According to an aspect of the present invention, a power detector including a photodiode and a logarithmic transimpedance amplifier is mounted inside a hermetically sealed package in such a way that the photodiode and the logarithmic transimpedance amplifier are located on the same thermally conductive substrate.

    Abstract translation: 根据本发明的一个方面,包括光电二极管和对数跨阻抗放大器的功率检测器安装在密封封装内,使得光电二极管和对数跨阻抗放大器位于相同的导热基板上。

    Method and apparatus for measuring a low power signal
    23.
    发明授权
    Method and apparatus for measuring a low power signal 有权
    用于测量低功率信号的方法和装置

    公开(公告)号:US06660991B2

    公开(公告)日:2003-12-09

    申请号:US10095235

    申请日:2002-03-11

    CPC classification number: H03M3/00 G01J1/46

    Abstract: Low intensity light is incident upon a photodiode whose output is coupled to an integrator. The output of the integrator is coupled to an input of an A/D converter, whose output is coupled to a microprocessor, whose output is coupled to a filter. A second output of the microprocessor is coupled to a gate electrode of a FET to provide a reset signal to the FET to reset the integrator. The microprocessor compares the digital samples of the integrated signal from the A/D converter and, firstly, generates the reset signal if a sample is beyond a set limit, and, secondly, calculates delta values between adjacent samples and interpolates the delta values for the reset periods so as to provide a continuous data stream which can be filtered by a filter matched to the form of the original signal.

    Abstract translation: 低强度光入射到其输出耦合到积分器的光电二极管上。 积分器的输出耦合到A / D转换器的输入,其输出耦合到微处理器,其输出耦合到滤波器。 微处理器的第二输出耦合到FET的栅电极,以向FET提供复位信号以复位积分器。 微处理器将来自A / D转换器的积分信号的数字样本进行比较,首先如果样本超出设定极限,则产生复位信号,其次,计算相邻样本之间的增量值,并对 复位周期,以便提供连续的数据流,该数据流可以由与原始信号的形式匹配的滤波器进行滤波。

    Optical amplification and receiving system and method
    24.
    发明授权
    Optical amplification and receiving system and method 有权
    光放大和接收系统及方法

    公开(公告)号:US06660990B2

    公开(公告)日:2003-12-09

    申请号:US09870634

    申请日:2001-06-01

    CPC classification number: H04B10/673

    Abstract: Optical receiving methods and systems are disclosed. One such optical receiving system includes an optical amplifier operable to produce amplified optical signals satisfying a filterless detection specification limit, and an optical detector locatable in unfiltered communication with the optical amplifier to receive the amplified optical signals therefrom.

    Abstract translation: 公开了光接收方法和系统。 一种这样的光接收系统包括可操作以产生满足无滤波检测规范限制的放大的光信号的光放大器,以及可与光放大器进行未滤波通信的光检测器,用于从其接收放大的光信号。

    Electron bombarded passive pixel sensor imaging
    25.
    发明授权
    Electron bombarded passive pixel sensor imaging 有权
    电子轰击无源像素传感器成像

    公开(公告)号:US06657178B2

    公开(公告)日:2003-12-02

    申请号:US09784621

    申请日:2001-02-14

    Applicant: Verle W. Aebi

    Inventor: Verle W. Aebi

    Abstract: A low light level image directed to a photocathode in a vacuum causes release of electron which bombard a CMOS imager including passive pixel sensors which in turn generates an electronic image which is fed out of the vacuum and is used to create useful images corresponding to the low level input image. A camera and other low light imaging devices are described.

    Abstract translation: 在真空中指向光电阴极的低光级图像引起电子的释放,该电子轰击包括无源像素传感器的CMOS成像器的电子,该无源像素传感器又产生馈送出真空的电子图像,并且用于创建对应于低 级输入图像。 描述了照相机和其他低光成像装置。

    Self-configurable optical proximity detector
    26.
    发明授权
    Self-configurable optical proximity detector 失效
    自配置光接近检测器

    公开(公告)号:US06649903B2

    公开(公告)日:2003-11-18

    申请号:US09995744

    申请日:2001-11-29

    CPC classification number: G01V8/12

    Abstract: Optical detector capable of operating in proximity mode or in proximity with background elimination mode, including an emission system and a reception system having hardware and software detection and configuration means capable of recognizing the appropriate mode by measuring the distance of the background, comparing a reception signal with at least one threshold, and automatically switching the reception system into proximity mode or proximity with background elimination mode depending on the result of the comparison.

    Abstract translation: 能够在接近模式或背景消除模式附近操作的光检测器,包括具有硬件和软件检测的发射系统和接收系统以及能够通过测量背景距离来识别适当模式的配置装置,将接收信号 具有至少一个阈值,并且根据比较的结果自动地将接收系统切换到接近模式或接近背景消除模式。

    System for photometric calibration of optoelectronic imaging devices especially streak cameras
    27.
    发明授权
    System for photometric calibration of optoelectronic imaging devices especially streak cameras 有权
    光电成像设备特别是条纹相机的光度校准系统

    公开(公告)号:US06642499B1

    公开(公告)日:2003-11-04

    申请号:US09356932

    申请日:1999-07-19

    CPC classification number: H04N5/238 G01J1/08 H01J31/502 H04N5/3572

    Abstract: A system for the photometric calibration of streak cameras and similar imaging devices provides a precise knowledge of the camera's flat-field response as well as a mapping of the geometric distortions. The system provides the flat-field response, representing the spatial variations in the sensitivity of the recorded output, with a signal-to-noise ratio (SNR) greater than can be achieved in a single submicrosecond streak record. The measurement of the flat-field response is carried out by illuminating the input slit of the streak camera with a signal that is uniform in space and constant in time. This signal is generated by passing a continuous wave source through an optical homogenizer made up of a light pipe or pipes in which the illumination typically makes several bounces before exiting as a spatially uniform source field. The rectangular cross-section of the homogenizer is matched to the usable photocathode area of the streak tube. The flat-field data set is obtained by using a slow streak ramp that may have a period from one millisecond (ms) to ten seconds (s), but may be nominally one second in duration. The system also provides a mapping of the geometric distortions, by spatially and temporarily modulating the output of the homogenizer and obtaining a data set using the slow streak ramps. All data sets are acquired using a CCD camera and stored on a computer, which is used to calculate all relevant corrections to the signal data sets. The signal and flat-field data sets are both corrected for geometric distortions prior to applying the flat-field correction. Absolute photometric calibration is obtained by measuring the output fluence of the homogenizer with a “standard-traceable” meter and relating that to the CCD pixel values for a self-corrected flat-field data set.

    Abstract translation: 用于条纹相机和类似成像装置的光度校准的系统提供了相机的平场响应的精确知识以及几何失真的映射。 该系统提供平场反应,表示记录输出的灵敏度的空间变化,信噪比(SNR)大于在单个亚微秒条纹记录中可以实现的信噪比。 平场响应的测量通过利用空间均匀且时间恒定的信号照射条纹相机的输入狭缝来进行。 该信号通过使连续波源通过由光管或管构成的光学均化器而产生,其中照明通常在作为空间均匀的源场离开之前几次反弹。 均质器的矩形横截面与条纹管的可用光电阴极区域匹配。 通过使用可能具有从1毫秒(ms)到10秒(s)的周期的慢条纹斜坡获得平场数据集,但是可以在标称上为持续时间为1秒。 该系统还通过空间和暂时调制均质器的输出并且使用慢条纹斜坡获得数据集,来提供几何失真的映射。 所有数据集均采用CCD摄像机采集并存储在计算机上,用于计算对信号数据集的所有相关校正。 在应用平场校正之前,信号和平场数据集都被校正为几何失真。 通过使用“标准可追踪”表测量均质器的输出能量密度,并将其与CCD校正平场数据集的CCD像素值相关联,可获得绝对光度校准。

    Video bus for high speed multi-resolution imagers and method thereof
    28.
    发明授权
    Video bus for high speed multi-resolution imagers and method thereof 有权
    用于高速多分辨率成像器的视频总线及其方法

    公开(公告)号:US06633029B2

    公开(公告)日:2003-10-14

    申请号:US09768124

    申请日:2001-01-23

    CPC classification number: H04N5/378 H04N5/365 H04N5/3742 H04N5/37457

    Abstract: A bus system and an imager for transferring signals from a plurality of signal streams to an output includes a plurality of signal buses in parallel and a control system. The control system multiplexes the signals from two or more of the plurality of signal streams onto two or more of the plurality of signal buses and allows the signals to substantially charge each of the two or more of the plurality of signal buses before demultiplexing the signals to the output. A method for transferring signals includes multiplexing signals on to two or more of a plurality of signal buses and allowing the signals to substantially charge each of the two or more of the plurality of signal buses before demultiplexing the signals to an output.

    Abstract translation: 用于将信号从多个信号流传送到输出的总线系统和成像器包括并行的多个信号总线和控制系统。 所述控制系统将来自所述多个信号流中的两个或多个的信号复用到所述多个信号总线中的两个或更多个信号总线上,并且允许所述信号在将所述信号解复用之前对所述多个信号总线中的所述两个或更多个信号进行充电, 输出。 用于传送信号的方法包括将信号复用到多个信号总线中的两个或更多个信号总线上,并且在将信号解复用到输出之前允许信号基本上对多个信号总线中的两个或更多个信号进行充电。

    Photoelectric switches
    29.
    发明授权

    公开(公告)号:US06600146B2

    公开(公告)日:2003-07-29

    申请号:US10046069

    申请日:2002-01-11

    CPC classification number: H03K17/941 G01S17/026 G01V8/12

    Abstract: A photoelectric switch emits pulsed detection light and outputs a light detection signal as reflected light is received. For generating an on-off judgment output for switching on and off, the level of the light detection signal is shifted towards a specified level during a specified light receiving period by an amount corresponding to the difference between the specified and the level of the light detection signal at a time immediately before the pulsed detection light is expected to arrive. On the basis of thus level-shifted signal, it is determined whether at least one of the conditions for generating the on-off judgment output is satisfied. The on-off judgment output is generated at least on the condition that the levels of the light detection signal at specified timings are in a specified size relationship. According to another embodiment, pulsed detection light is emitted at least three times per cycle of noise from a fluorescent lamp and comparisons are made between a specified level and the level of the light detection signal whenever a peak of the pulsed detection light is expected to arrive, and the on-off judgment output is generated according to the majority of the results of comparisons made during a period of light emission.

    Photo switching device having a control circuit with a gate controlled device
    30.
    发明授权
    Photo switching device having a control circuit with a gate controlled device 失效
    具有具有门控装置的控制电路的光开关装置

    公开(公告)号:US06593564B2

    公开(公告)日:2003-07-15

    申请号:US09903649

    申请日:2001-07-13

    Inventor: Ching Chi Cheng

    CPC classification number: H05B37/0218 Y02B20/46

    Abstract: A photo switching device includes first and second terminals respectively coupled to a power source and a load. A bi-directional current routing circuit including a rectifying bridge is connected to the first and second terminals to receive electricity from the first and second terminals and has positive and negative output terminals. A switching/driving circuit is connected between the positive and negative output terminals for selectively conducting an output current of the bi-directional current routing circuit from the positive output terminal to the negative output terminal. The switching/driving circuit includes a silicon controlled switching device having a gate coupled to and controlled by a controlling circuit to switch between open condition and closed condition. The controlling circuit includes a photo detecting device connected to a gate of a gate controlled device. The gate controlled device has an output coupled to and controlling the gate of the silicon controlled switching device.

    Abstract translation: 光切换装置包括分别耦合到电源和负载的第一和第二端子。 包括整流桥的双向电流布线电路连接到第一和第二端子以从第一和第二端子接收电力,并具有正负输出端子。 开关/驱动电路连接在正输出端和负输出端之间,用于选择性地将双向电流路由电路的输出电流从正输出端输出到负输出端。 开关/驱动电路包括硅控开关器件,其具有耦合到控制电路并由开关状态和闭合状态之间切换的控制电路控制的栅极。 控制电路包括连接到门控制装置的栅极的光检测装置。 栅极控制器件具有耦合到并控制硅控开关器件的栅极的输出。

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