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    Spectrophotometer
    71.
    发明公开
    Spectrophotometer 失效
    分光光度计

    公开(公告)号：EP0506063A3

    公开(公告)日：1993-03-31

    申请号：EP92105251.0

    申请日：1992-03-27

    Applicant: SHIMADZU CORPORATION

    Inventor： Ando, Osamu ,  Fukuma, Toshiaki

    IPC: G01J3/02 ,  G01J3/06

    CPC classification number: G01J3/10 ,  G01J3/02 ,  G01J3/0235 ,  G01J3/027 ,  G01J3/06 ,  G01J3/18 ,  G01J2003/063 ,  G01J2003/064 ,  G01J2003/1213

    Abstract: A spectrophotometer including: a) a light source switching mechanism (20) for switching a plurality of light sources (1,2) by swinging a light source mirror (3); b) a filter selecting mechanism (19); c) a diffraction grating rotating mechanism (10); and d) a controller for determining the operation origins of the three driving mechanisms using a rough origin sensor (21) provided for the diffraction grating rotating mechanism and a photometer. The operation of the controller is to: i) determine an origin of the movement of the filter by making an end of the filter frame to touch a stopper; ii) determine a rough origin of the diffraction grating using the rough origin sensor; and iii) determine an origin of the movement of the light source mirror and a precise origin of the movement of the diffraction grating by detecting the position at which the photometer detects the maximum intensity of light.

    Automatic spectrophotometer calibration system
    72.
    发明公开
    Automatic spectrophotometer calibration system 失效
    Selbsteichendes Spektrometer。

    公开(公告)号：EP0502495A1

    公开(公告)日：1992-09-09

    申请号：EP92103675.2

    申请日：1992-03-04

    Applicant: NIRSYSTEMS INCORPORATED

    Inventor： Honigs, David E. ,  Kelly, Timothy G.

    IPC: G01J3/06

    CPC classification number: G01N21/274 ,  G01J3/28 ,  G01J3/42 ,  G01J2003/2879 ,  G01N2201/1283

    Abstract: In a spectrophotometer having an oscillating grating (13), an automatic calibration system is provided to ensure that the instrument constants are recomputed before each measurement of an unknown sample. In the system, whenever a reference scan is carried out, a second scan through an absorbance standard is carried out automatically and the data obtained is used to correct the instrument coefficients relating the angular position of the grating to the wavelength. The corrected coefficients are then stored to be used in the measurement of the unknown sample immediately thereafter. For near infrared spectrum measurements, the absorbance standard is a polystyrene plate. For visual measurements, the absorbance standard is a didymium plate. The didymium plate is mounted on the polystyrene plates eclipse a portion of the polystyrene plate.

    Abstract translation: 在具有振荡光栅（13）的分光光度计中，提供自动校准系统以确保在每个测量未知样品之前重新计算仪器常数。 在系统中，每当进行参考扫描时，通过吸光度标准进行第二扫描，并且所获得的数据用于校正与光栅的角位置相关的仪器系数与波长。 然后将校正后的系数存储在其后立即用于未知样品的测量。 对于近红外光谱测量，吸光度标准是聚苯乙烯板。 对于视觉测量，吸光度标准是mium板。 聚苯乙烯板上安装了钕铁板，将聚苯乙烯板的一部分。

    Scanning monochromator system
    73.
    发明公开
    Scanning monochromator system 失效
    Einrichtung mit Abtast-Monochromator。

    公开(公告)号：EP0502413A2

    公开(公告)日：1992-09-09

    申请号：EP92103285.0

    申请日：1992-02-26

    Applicant: IMO INDUSTRIES Inc.

    Inventor： Krupa, Robert J. ,  Owen, Edward E. ,  Shiller, Stanley L.

    IPC: G01J3/06

    CPC classification number: G01J3/06 ,  G01J2003/063 ,  G01J2003/066

    Abstract: A scanning monochromator uses a pulse-driven micro-stepping motor (20) to drive a spectral-dispersion element (33) via a reduction-gear harmonic drive (21). The motor (20) is directly coupled to the input hub of the reduction-gear drive (21), and the output hub of the reduction-gear drive directly supports the spectral-dispersion element (33). By selecting a motor (20) with a great number of steps per revolution, and a harmonic drive (21) with a great reduction ratio, a resolution of 5 million pulsed steps is available, per single rotation of the output hub of the reduction-gear drive. This translates into more than 600,000 incremental angular-displacement steps over a usable 45° range of dispersion-element rotation.

    Abstract translation: 扫描单色仪使用脉冲驱动微步进电动机（20）经由减速齿轮谐波驱动器（21）驱动光谱色散元件（33）。 马达（20）直接联接到减速齿轮传动装置（21）的输入轮毂上，并且减速齿轮传动装置的输出轮毂直接支撑分光分散元件（33）。 通过选择每转大量步进的电动机（20）和具有大的减速比的谐波驱动（21），可以在减速机的输出轮毂的每次旋转中提供500万个脉冲步进的分辨率， 齿轮传动。 这可以在可用的45°范围的分散体旋转中转化为超过60万个增量角位移步长。

    Spectrometer with direct drive high speed oscillating grating
    75.
    发明公开
    Spectrometer with direct drive high speed oscillating grating 失效
    具有直接驱动高速振荡光栅的光谱仪

    公开(公告)号：EP0378108A3

    公开(公告)日：1991-11-21

    申请号：EP90100152.9

    申请日：1990-01-04

    Applicant: NIRSYSTEMS INCORPORATED

    Inventor： McGee, Philip A.

    IPC: G01J3/06 ,  H02P7/00

    CPC classification number: G01J3/06 ,  G01J3/18 ,  G01J2003/062 ,  G01J2003/1213 ,  G01J2003/1273 ,  H02P7/04

    Abstract: An optical grating is oscillated at a high rate to scan a narrow wavelength band of light through the spectrum dispersed by the grating. The grating is connected integrally with the rotor of a motor, which is energized to oscillate its rotor between selected limits. The direction of rotation of the motor is controlled by an H drive circuit connected to a coil of the motor. The speed of the motor is controlled by a pulse train applied to the motor coil through the H drive. The pulse train has a duty cycle varying inversely with the motor speed. The duty cycle of the pulse train is controlled by a counter which is connected to count high frequency pulses and which is reset each time the grating rotates through an angular increment. The limits of the oscillation of the grating and the rate of rotation of the grating between the limits are selectively variable. Output readings from the spectrophotometer are taken at equal angular increments of the grating and these readings are converted to values occurring at equal wavelength increments by a computer.

    Continuously rotating grating rapid-scan spectrophotometer
    76.
    发明公开
    Continuously rotating grating rapid-scan spectrophotometer 失效
    连续旋转式光栅快速扫描分光光度计

    公开(公告)号：EP0277720A2

    公开(公告)日：1988-08-10

    申请号：EP88300390.7

    申请日：1988-01-19

    Applicant: BARSPEC LIMITED

    Inventor： Barshad,Yoav

    IPC: G01J3/06 ,  G01J3/42 ,  G01J3/18 ,  G01J3/28

    CPC classification number: G01J3/06 ,  G01J3/1838 ,  G01J3/2889 ,  G01J2001/444 ,  G01J2003/062 ,  G01J2003/066 ,  G01J2003/2866

    Abstract: A system for rapid-scan spectral analysis comprising a concave holographic diffraction grating (18) continuously rotated at a substantially constant angular velocity to provide a rapid scanning monochromator (a monochromator is used to transfer nominal regions of wavelengths out of the continuous light source). The unique sampling circuitry uses an optical shaft encoder (42). The angular velocity and angular acceleration of the grating (18) are calculated from time measurements, just before the first wavelength of interest falls on the detector. This information is used to control the Analog to Digital converter sampling rate across the region of interest. The samples as a function of time are stored in a memory buffer (58) so that each data point corresponds to a wavelength.

    Abstract translation: 一种用于快速扫描频谱分析的系统，包括以基本恒定的角速度连续旋转的凹面全息衍射光栅（18），以提供快速扫描单色器（单色器用于将标称波长区域传送出连续光源）。 独特的采样电路使用光学轴编码器（42）。 光栅（18）的角速度和角加速度根据时间测量值计算，就在第一个感兴趣的波长落在检测器上之前。 该信息用于控制整个感兴趣区域的模数转换器采样率。 作为时间函数的采样被存储在存储器缓冲器（58）中，使得每个数据点对应于波长。

    Spectroradiometer and spectrophotometer
    77.
    发明公开
    Spectroradiometer and spectrophotometer 失效
    Spektralradiometer和Spektralphotometer。

    公开(公告)号：EP0105178A2

    公开(公告)日：1984-04-11

    申请号：EP83108371.2

    申请日：1983-08-25

    Applicant: Li-Cor, Inc.

    Inventor： Middendorf, Lyle Richard ,  Wurm, John Henry ,  Biggs, William Walter

    IPC: G01J3/00 ,  G01J3/06 ,  G01J5/30 ,  G01N21/27

    CPC classification number: G01J3/28 ,  G01J3/0232 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/027 ,  G01J3/0283 ,  G01J3/0291 ,  G01J3/06 ,  G01J2003/1828 ,  G01N2201/125 ,  G01N2201/127

    Abstract: To provide sufficient sensitivity, spectral resolution and speed of measurement for field environmental measurements in a portable spectroradiometer, a silicon photodiode receives light: (1) having a bandwidth in the range of between 2 and 15 nm (nanometers) from a pivotable concave holographic diffraction grating within the wavelength range of between 250 and 1150 nm at a scanning rate in the range of 20 to 100 nm per second; (2) having stray light of high intensity and undesired frequencies and the shorter wavelength harmonics of the selected frequency range blocked by filters; and (3) having flux of a least 10 microwatts per square meter of diffuser plate for each nanometer of bandwidth. Automatic electrical zeroing is obtained by blocking all light once at the beginning of each scan, obtaining an electrical drift-related signal and using the drift signal to ad- just the measured signal during the scan. Several different sensing interfaces can be used, including a quartz, light fiber probe having at least a 50% packing density and a cone angle of at least 24 degrees. The data and the programming storage is at least 30K bytes but the instrument uses no more than two watts of power when the instrument is not scanning.

    Abstract translation: 为了在便携式分光光度计中提供足够的灵敏度，光谱分辨率和现场环境测量的测量速度，硅光电二极管接收光：（1）具有从可枢转的凹面全息衍射的2至15nm（纳米）范围内的带宽 在波长范围为250〜1150nm之间，扫描速度为20〜100nm /秒; （2）具有高强度和不期望频率的杂散光，并且所选频率范围的较短波长谐波被滤波器阻挡; 和（3）每纳米带宽具有至少10微瓦/平方米扩散板的通量。 通过在每次扫描开始时阻止所有光一次获得自动电调零，获得电漂移相关信号，并使用漂移信号在扫描期间调整测量信号。 可以使用几种不同的感测接口，包括具有至少50％填充密度和至少24度的锥角的石英光纤探针。 数据和编程存储器至少为30K字节，但当仪器未扫描时，仪器的功率不得超过2瓦。

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