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    Optical measurement apparatus and method for optical measurement
    31.
    发明授权
    Optical measurement apparatus and method for optical measurement 失效
    光学测量装置及光学测量方法

    公开(公告)号：US06960771B1

    公开(公告)日：2005-11-01

    申请号：US10381368

    申请日：2000-09-25

    Applicant: Motohiro Suyama ,  Yoshihiko Kawai ,  Tetsuya Morita ,  Koichiro Oba

    Inventor： Motohiro Suyama ,  Yoshihiko Kawai ,  Tetsuya Morita ,  Koichiro Oba

    IPC: G01N21/64 ,  G01J1/18 ,  G01J1/42 ,  G01J11/00 ,  G01N1/02 ,  G01N15/06 ,  G01N15/14 ,  G01T1/17 ,  G01T1/204 ,  G01T1/208 ,  H01J40/02 ,  H01J43/12 ,  H01J43/30 ,  H01L27/144 ,  H01L31/10 ,  H01L31/101 ,  H01L31/107 ,  G01T1/42

    CPC classification number: G01J1/18 ,  G01J1/42 ,  G01T1/17 ,  H01L27/144 ,  H01L31/101 ,  H01L31/107

    Abstract: A liquid scintillation counter 10 serving as an optical measurement apparatus includes: an HPD 24, a charge amplifier 26, a voltage amplifier 28, a comparator 30, a counter 32, a multi-channel analyzer 34, a display 38, and the like. The HPD 24 has a photocathode 24a and an APD 24b for outputting a signal that corresponds to the number of incident photons. The comparator 30 outputs a logic pulse signal, serving as a comparison result signal, only when the signal outputted from the HPD 24 and amplified by the charge amplifier 26 and voltage amplifier 28 is larger than a prescribed threshold value. This threshold value is set larger than an output signal that is outputted when a single photoelectron is emitted from the photocathode 24a and smaller than another output signal that is outputted when two or more photoelectrons are emitted.

    Abstract translation: 用作光学测量装置的液体闪烁计数器10包括：HPD 24，电荷放大器26，电压放大器28，比较器30，计数器32，多通道分析器34，显示器38等。 HPD24具有用于输出与入射光子数相对应的信号的光电阴极24a和APD24b。 只有当从HPD24输出并由电荷放大器26和电压放大器28放大的信号大于规定的阈值时，比较器30输出用作比较结果信号的逻辑脉冲信号。 该阈值被设定为大于当从光电阴极24a发射单个光电子时输出的输出信号小于在发出两个或更多个光电子时输出的另一个输出信号的输出信号。

    NDIR gas analysis using spectral ratioing technique
    34.
    发明授权
    NDIR gas analysis using spectral ratioing technique 失效
    NDIR气体分析采用光谱比例技术

    公开(公告)号：US5341214A

    公开(公告)日：1994-08-23

    申请号：US851869

    申请日：1992-03-16

    Applicant: Jacob Y. Wong

    Inventor： Jacob Y. Wong

    IPC: G01J1/16 ,  G01J1/18 ,  G01N1/22 ,  G01N21/03 ,  G01N21/05 ,  G01N21/25 ,  G01N21/31 ,  G01N21/35 ,  G08B17/117 ,  G08B29/20

    CPC classification number: G01N1/2258 ,  G01N21/05 ,  G01N21/255 ,  G01N21/3504 ,  G08B17/117 ,  G08B29/20 ,  G01J2001/161 ,  G01J2001/182 ,  G01N2001/2261 ,  G01N2021/0321 ,  G01N2021/0385 ,  G01N2021/052 ,  G01N21/0332 ,  G01N21/314 ,  G01N2201/0228 ,  G01N2201/06186 ,  G01N2201/0696

    Abstract: An instrument for determining the concentration of a particular gas that might be present in a sample has no moving parts and is extremely compact and inexpensive. A novel waveguiding structure serves both as an optical element and as the sample chamber. As an optical element, the waveguiding structure collects radiation from a blackbody source located at the entrance end of the waveguiding structure and conducts the radiation through the waveguiding structure, concentrating it on two infrared detectors mounted at the opposite end of the waveguiding structure. As a sample chamber, the waveguiding structure causes the radiation to undergo multiple reflections that result in the average path length being substantially greater than the physical length of the waveguiding structure. Each of the detectors has its own optical filter, and baffling assures that each detector responds only to radiation which has passed through its filter. One filter defines a spectral passband that coincides with the infrared absorption band of the gas to be measured. The other filter defines a non-absorbing or neutral passband. The electrical signals produced by the detectors are processed to provide a ratio, the value of which is related to the concentration of the particular gas to be detected.

    Abstract translation: 用于确定样品中可能存在的特定气体的浓度的仪器没有移动部件，并且非常紧凑和便宜。 新颖的波导结构既用作光学元件又用作样品室。 作为光学元件，波导结构收集来自位于波导结构的入口端的黑体源的辐射，并将辐射传导通过波导结构，将其集中在安装在波导结构的相对端的两个红外检测器上。 作为样品室，波导结构导致辐射经历多次反射，导致平均路径长度远大于波导结构的物理长度。 每个检测器都有自己的光学滤波器，并且挡板确保每个检测器仅响应已经通过其过滤器的辐射。 一个滤光器定义与待测气体的红外吸收带一致的光谱通带。 另一个滤波器定义了非吸收或中性通带。 由检测器产生的电信号被处理以提供一个比率，其值与待检测的特定气体的浓度有关。

    Temperature compensated optical detector
    35.
    发明授权
    Temperature compensated optical detector 失效
    温度补偿光学检测器

    公开(公告)号：US5266792A

    公开(公告)日：1993-11-30

    申请号：US783503

    申请日：1991-10-28

    Applicant: David H. Crowne ,  William B. Spillman, Jr.

    Inventor： David H. Crowne ,  William B. Spillman, Jr.

    IPC: G01J1/16 ,  G01J1/18 ,  G01J1/42 ,  G01J1/44 ,  G01J3/10 ,  G01J3/50 ,  G01J9/00 ,  H01J40/14

    CPC classification number: G01J9/00 ,  G01J1/18 ,  G01J3/10 ,  G01J3/50 ,  G01J2001/1615 ,  G01J2001/444

    Abstract: An optical wavelength detector includes a photoelectric device that produces a signal in response to incident light thereon corresponding to a characteristic of the incident light such as wavelength. A light source is provided that can selectively expose light to the photoelectric device. A memory device stores device characterization data that corresponds wavelength information to current ratio signals from the photoelectric device. The current ratio signals are digitized and form part of the address for the memory. In a temperature compensated embodiment, the optical wavelength detector includes means to determine a temperature dependent electrical characteristic of the photoelectric device. In the preferred embodiment this electrical characteristic is the forward bias voltage detected when a predetermined forward bias current is applied to the photoelectric device in the dark. The temperature dependent forward bias voltage is converted to a digital signal and provides another part of the digital address for the memory. The memory generates a temperature compensated signal that corresponds to the incident light wavelength.

    Abstract translation: 光波长检测器包括光电装置，其响应于入射光的入射光而产生对应于诸如波长的入射光的特性的信号。 提供可以选择性地将光暴露于光电装置的光源。 存储器件将来自光电器件的电流比信号对应于波长信息的器件表征数据存储。 电流比率信号被数字化并形成存储器地址的一部分。 在温度补偿实施例中，光波长检测器包括用于确定光电器件的温度依赖性电特性的装置。 在优选实施例中，该电特性是当在黑暗中将预定的正向偏置电流施加到光电装置时检测到的正向偏压。 温度相关的正向偏置电压被转换为数字信号，并为存储器提供数字地址的另一部分。 存储器产生对应于入射光波长的温度补偿信号。

    Method of and apparatus for inspecting paint coating
    36.
    发明授权
    Method of and apparatus for inspecting paint coating 失效
    检查涂料的方法和设备

    公开(公告)号：US5066132A

    公开(公告)日：1991-11-19

    申请号：US564167

    申请日：1990-08-08

    Applicant: Tsuyoshi Nagata ,  Shinji Okuda

    Inventor： Tsuyoshi Nagata ,  Shinji Okuda

    IPC: G01J1/16 ,  G01J1/18 ,  G01J1/30 ,  G01J1/44 ,  G01N21/84 ,  G01N21/86 ,  G01N21/958

    CPC classification number: G01J1/16 ,  G01N21/8422 ,  G01N21/86 ,  G01N21/958 ,  G01J1/18 ,  G01J1/30 ,  G01J2001/4406 ,  G01N2021/8427 ,  G01N2201/0696 ,  G01N2201/124 ,  G01N2201/12723

    Abstract: An apparatus for inspecting a coating formed on a workpiece, comprising a light emitter and a light receiver positioned on respective sides of the workpiece; an amplifier for amplifying a detection signal from the light receiver and for generating an amplified output signal; a comparator for comparing the amplified output signal with a predetermined level thereby to generate a control signal indicative of a difference between the amplified output signal and the predetermined level; a zero adjustment for adjusting the amplified output signal to a zero value; and a tuning circuit for tuning the amplified output signal, which is generated from the amplifier when the workpiece to be inspected has not yet been formed with the coating, to a predetermined tuned value. The tuning circuit is operable to vary the amplification factor of the amplifier and also to the intensity of light emitted by the light emitter. In place of the tuning circuit, an amplification factor setting citcuit may be used for sampling the light transmissivity of the workpiece and for selecting one of amplification factors according to the result of sampling. After the formation of the coating on the workpiece, the amplified output signal may decrease with a decrease of the light transmissivity of the workpiece, and the coating condition is determined depending on whether or not the amplified output signal is lower than the predetermined level.

    Abstract translation: 一种用于检查在工件上形成的涂层的装置，包括位于工件的相应侧面上的光发射器和光接收器; 放大器，用于放大来自光接收器的检测信号并产生放大的输出信号; 比较器，用于将放大的输出信号与预定电平进行比较，从而产生指示放大的输出信号与预定电平之间的差的控制信号; 用于将放大的输出信号调整为零值的零调整; 以及调谐电路，用于当待检查的工件尚未形成涂层时，将放大器产生的放大的输出信号调谐到预定的调谐值。 调谐电路可操作以改变放大器的放大系数以及光发射器发射的光的强度。 代替调谐电路，可以使用放大因子设置电路来对工件的光透射率进行采样，并根据采样结果选择一个放大因子。 在工件上形成涂层之后，放大的输出信号可能随着工件的光透射率的降低而减小，并且根据放大的输出信号是否低于预定电平来确定涂覆条件。

    Method of checking the workmanship of paint coating
    37.
    发明授权
    Method of checking the workmanship of paint coating 失效
    检查涂料工艺的方法

    公开(公告)号：US4843874A

    公开(公告)日：1989-07-04

    申请号：US173070

    申请日：1988-03-24

    Applicant: Nagata Tsuyoshi ,  Fujita Katsuto ,  Okuda Shinji

    Inventor： Nagata Tsuyoshi ,  Fujita Katsuto ,  Okuda Shinji

    IPC: G01B11/06 ,  G01B11/30 ,  G01J1/18 ,  G01J3/51 ,  G01N21/47 ,  G01N21/84

    CPC classification number: G01N21/4738 ,  G01N2021/8427

    Abstract: For checking the workmanship of paint coating, light is shed on the portion of the surface of an object where a paint has been applied. The intensity of light reflected by this portion of the surface gives a clue to a judgment on the acceptability of the paint coating. The judgment is passed by checking whether or not the above-mentioned intensity of light falls within a preset level. The level to be preset is variable according to the intensity of light reflected by the surface, the intensity of light in this case being measured prior to the application of the paint. The light reflected by the portion of the surface where the paint has been applied is resolved into three colors. A checkup is carried out on whether or not the sum of the intensities of light representing these three colors corresponds to a level preset for the amount of this sum. A level to be preset is selected from among data stored in a memory. These data are compiled beforehand according to the intensities of light reflected by the surfaces of various objects. In this case, the intensities of light are measured prior to the application of the paints.

    Analysis system
    38.
    发明授权
    Analysis system 失效
    分析系统

    公开(公告)号：US4550084A

    公开(公告)日：1985-10-29

    申请号：US553096

    申请日：1983-11-18

    Applicant: Larry A. Nelson ,  Leon W. Schmidt

    Inventor： Larry A. Nelson ,  Leon W. Schmidt

    IPC: G01J1/18 ,  G01N21/07 ,  G01N9/30 ,  G01N35/00

    CPC classification number: G01N21/07 ,  G01J2001/184 ,  Y10T436/111666 ,  Y10T436/115831

    Abstract: A chemical analysis system for analyzing a plurality of independent specimens that have time varying characteristics includes a circumferential array of analysis regions that hold the specimens. The analytical regions are sequentially and repetitively sensed and resulting analysis signals corresponding to monitored specimen characteristics are stored in corresponding memory locations. A signal transmission channel connected between the sensor and the memory includes a signal storage capacitor and variable slew rate circuitry. The stored data signal value from the location in memory corresponding to the next analysis region to be sensed is applied to the signal transmission channel while the slew rate circuitry is set in a fast slew rate condition to preset the storage capacitor, and then the data signal generated by said sensor is applied to the signal transmission channel while the slew rate circuitry is set in a slow slew rate condition to adjust the data signal value in the storage capacitor to the current analysis signal value provided by the sensor.

    Abstract translation: 用于分析具有时变特性的多个独立样本的化学分析系统包括保持样本的分析区域的圆周阵列。 分析区域被顺序地和重复地感测，并且对应于监测的样本特征的结果分析信号被存储在相应的存储器位置中。 连接在传感器和存储器之间的信号传输通道包括信号存储电容器和可变转换速率电路。 将来自存储器中对应于待检测的下一个分析区域的存储器中存储的数据信号值应用于信号传输通道，同时将转换速率电路设置为快速转换速率条件以预设存储电容器，然后将数据信号 将所述传感器产生的信号施加到信号传输通道，同时将转换速率电路设置为慢速转换速率条件，以将存储电容器中的数据信号值调整为由传感器提供的当前分析信号值。

    Method and apparatus for converting radiant energy levels to digital data
    39.
    发明授权
    Method and apparatus for converting radiant energy levels to digital data 失效
    将辐射能级转换为数字数据的方法和装置

    公开(公告)号：US4543558A

    公开(公告)日：1985-09-24

    申请号：US475090

    申请日：1983-03-14

    Applicant: James A. White

    Inventor： James A. White

    IPC: G01J1/44 ,  G01J1/18 ,  G01J1/42 ,  H03M1/00 ,  G01J1/16

    CPC classification number: G01J1/42 ,  H03M1/38

    Abstract: A method and apparatus for converting radiant energy levels to digital data wherein an image sensor is provided having at least one row of sensor elements each including a light sensitive capacitor and an access switch and which changes state produces a corresponding binary output signal when a predetermined charge threshold is exceeded by the capacitor whose charge is a function of intensity and period of an illumination. The row of elements is first calibrated by illuminating same with a reference light source and sensing at a first frequency (F) such that approximately one half of the elements change state and counting the digital output signals corresponding to the changes of state to obtain a first number (B). Thereafter, the row is illuminated with an unknown light source which has a lower radiant energy level than that of the reference light source and senses at a frequency F/2. The digital output signals corresponding to the changes of state are counted to obtain a second number (A). The numbers A and B are compared to produce a digital "1" signal when A>B and a digital "0" when A

    Abstract translation: 一种用于将辐射能级转换为数字数据的方法和装置，其中提供具有至少一行传感器元件的图像传感器，每个传感器元件包括光敏电容器和访问开关，并且当预定电荷时，改变状态产生相应的二进制输出信号 电容器的电荷超过了照明的强度和周期的函数的阈值。 首先通过用参考光源照射元件并且以第一频率（F）进行感测来校准元件行，使得大约一半的元件改变状态并对对应于状态变化的数字输出信号进行计数以获得第一 数字（B）。 此后，该行被未知光源照射，该未知光源具有比参考光源低的辐射能级，并以频率F / 2感测。 对与状态变化对应的数字输出信号进行计数，得到第二数（A）。 当A> B时，数字A和B被比较以产生数字“1”信号，当A ，连续感测频率的K位数字数据的Nk

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