公开(公告)号：US09683892B2

公开(公告)日：2017-06-20

申请号：US15292244

申请日：2016-10-13

Applicant: Beijing Information Science & Technology University

Inventor： Lianqing Zhu ,  Wei He ,  Xiaoping Lou ,  Feng Liu ,  Mingli Dong ,  Fei Luo ,  Wei Zhuang

IPC: G01J3/28 ,  G01J3/18 ,  G02F2/00 ,  G02B26/08 ,  G02B6/02

CPC classification number: G01J3/1895 ,  G01J3/0208 ,  G01J3/027 ,  G01J3/06 ,  G01J3/28 ,  G01J2003/064 ,  G01J2003/066 ,  G02B6/02076 ,  G02B26/0816 ,  G02F2/00

Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting an imaging focus mirror, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.

公开(公告)号：US5015069A

公开(公告)日：1991-05-14

申请号：US312537

申请日：1989-02-17

Applicant: Raymond G. Bryan ,  Louis Hlousek

Inventor： Raymond G. Bryan ,  Louis Hlousek

IPC: G01J3/06 ,  G01J3/18 ,  G02B26/08

CPC classification number: G02B26/0808 ,  G01J3/06 ,  G01J2003/066 ,  G01J3/18

Abstract: In a spectrophotometer application where high speed positioning is critical, a galvanometer in conjunction with a microprocessor controlled hybrid digital/analog servo system is used to rotate a diffraction grating for wavelength selection. A table containing digital position information for all wavelengths is accessed by the microprocessor to perform wavelength changes. The use of the table permits the determination of grating position to yield a desired wavelength for a system where the axis of rotation does not intersect a point on the surface of the diffraction grating. That is, the diffraction grating can be rotated about an axis coinciding with its center of gravity.

Abstract translation: 在高速定位至关重要的分光光度计应用中，使用与微处理器控制的混合数字/模拟伺服系统结合的电流计旋转用于波长选择的衍射光栅。 微处理器访问包含所有波长的数字位置信息的表以执行波长改变。 使用该表格允许确定光栅位置以产生用于旋转轴线不与衍射光栅表面上的点相交的系统的期望波长。 也就是说，衍射光栅可以围绕与其重心一致的轴线旋转。

公开(公告)号：US4945249A

公开(公告)日：1990-07-31

申请号：US294087

申请日：1989-01-05

Applicant: Andrew I. Grant ,  Martyn T. MacPherson ,  David G. Stevens

Inventor： Andrew I. Grant ,  Martyn T. MacPherson ,  David G. Stevens

IPC: G01V8/12 ,  G01J3/06 ,  G01J3/28 ,  G01J3/44 ,  G01N21/64 ,  G01V8/10

CPC classification number: G01J3/44 ,  G01N21/64 ,  G01J2003/066 ,  G01J3/2803 ,  G01N2201/0214

Abstract: Apparatus for detecting an anomaly, (e.g. the presence of a hydrocarbon seep) at or near a water or land surface comprises means for generating a beam, preferably a pulsed beam, of primary light radiation, preferably ultra-violet light, and directing the beam towards the surface. The beam is sufficiently intense and of such a spectral composition that the beam causes the anomaly, if present, to emit secondary light radiation. The apparatus also comprises means for collecting the secondary light radiation, or means for collecting solar induced secondary light radiation, spectral analysis means for analysing the spectrum of the secondary radiation, and a high resolution, multi-element digitizing detector for recovering the analyzed secondary radiation. The detector has a plurality of detection channels positioned across the spectrum of the backscattered primary radiation and emitted secondary radiation, the channels being software configurable and under the control of a digitally addressable computer-operated controller. The concentration of used channels across the plurality of channels is adjustable and increasable in the regions of the spectrum of greatest interest and decreasable in the regions of least interest.

公开(公告)号：US4916645A

公开(公告)日：1990-04-10

申请号：US201250

申请日：1988-06-02

Applicant: Charles E. Wuest ,  John B. Collins

Inventor： Charles E. Wuest ,  John B. Collins

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28 ,  G01J3/32 ,  G01J3/443 ,  G01N21/71 ,  G01N21/73 ,  G01N21/74

CPC classification number: G01J3/28 ,  G01J3/32 ,  G01J2003/063 ,  G01J2003/066 ,  G01J3/18 ,  G01N21/73 ,  G01N21/74

Abstract: Iterative compensation of drift of peak positions of spectral lines is effected in a spectral monochromator including a grating, a detector of spectral fractions of a spectral band, a stepper motor for varying relative orientation of the grating and the detector, and a computer. Computer-defined spectral windows each encopasses a spectral band and has an initial spectral center. Each window is scanned to determine a peak spectral position. Calculation is made for determining a spectral position error of the peak position from the initial center for each corresponding window. A functional average of the offsets for the peaks is calculated as a linear function of window position, and a revised spectral center for each window is calculated as being equal to the initial center plus the functional average for the window position determined from the linear function. Each window is shifted correspondingly. The step of successively scanning through each window is repeated to determine a new peak position for each corresponding band, whereby each new peak position is maintained near the spectral center of each corresponding window.

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。

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。

公开(公告)号：US11800981B2

公开(公告)日：2023-10-31

申请号：US16949466

申请日：2020-10-30

Applicant: Colgate-Palmolive Company

Inventor： Deborah Ann Peru ,  Hrebesh Molly Subhash

IPC: A61B5/00 ,  G01J3/02 ,  G02B6/04 ,  G01J3/06 ,  A61B5/145 ,  A61B5/1455 ,  G01J3/08 ,  G01J3/10 ,  G01N21/25 ,  G01J3/18 ,  G01J3/36 ,  G01N21/31 ,  G01J3/32

CPC classification number: A61B5/0075 ,  A61B5/0062 ,  A61B5/0088 ,  A61B5/14546 ,  A61B5/14551 ,  A61B5/4875 ,  G01J3/021 ,  G01J3/024 ,  G01J3/0205 ,  G01J3/027 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0221 ,  G01J3/0229 ,  G01J3/0264 ,  G01J3/0291 ,  G01J3/06 ,  G01J3/08 ,  G01J3/10 ,  G01J3/18 ,  G01J3/32 ,  G01J3/36 ,  G01N21/255 ,  G01N21/31 ,  G02B6/04 ,  A61B5/441 ,  A61B5/4872 ,  A61B2562/0233 ,  G01J2003/061 ,  G01J2003/065 ,  G01J2003/066 ,  G01N2201/0826 ,  G01N2201/0833 ,  G01N2201/0846

Abstract: A spectroscopic system may include: a probe having a probe tip and an optical coupler, the optical coupler including an emitting fiber group and first and second receiving fiber groups, each fiber group having a first end and a second end, wherein the first ends of the fiber groups are formed into a bundle and optically exposed through the probe tip; a light source optically coupled to the second end of the emitting fiber group, the light source emitting light in at least a first waveband and a second waveband, the second waveband being different from the first waveband; a first spectrometer optically coupled to the second end of the first receiving fiber group and configured to process light in the first waveband; and a second spectrometer optically coupled to the second end of the second receiving fiber group and configured to process light in the second waveband.

公开(公告)号：US4971439A

公开(公告)日：1990-11-20

申请号：US302061

申请日：1989-01-18

Applicant: James R. Brown

Inventor： James R. Brown

IPC: G01J3/06 ,  G01J3/12 ,  G01J3/28

CPC classification number: G01J3/06 ,  G01J2003/063 ,  G01J2003/066 ,  G01J2003/068 ,  G01J2003/1273 ,  G01J2003/2866

Abstract: A calibration method and apparatus for economical and rapid calibration of a scientific instrument utilizing a monochromator to generate monochromatic light utilizing controllable means for determining the angular position of a light dispersing element in the monochromator and a filter having a narrow absorption band(s) to determine a relationship between the wavelength of the monochromatic light generated by the monochromator and an angular position of the dispersing element so that the dispersing element can be rotated to an exact position for the monochromator to generate a selected wavelength of monochromatic light.

Abstract translation: 一种用于经济和快速校准科学仪器的校准方法和装置，利用单色仪产生单色光，利用可控装置来确定单色仪中的光分散元件的角位置和具有窄吸收带的滤光片，以确定 由单色仪产生的单色光的波长与分散元件的角度位置之间的关系，使得分散元件可以旋转到用于单色仪的精确位置以产生所选择的单色光的波长。

公开(公告)号：US4804266A

公开(公告)日：1989-02-14

申请号：US8544

申请日：1987-01-29

Applicant: Yoav Barshad

Inventor： Yoav Barshad

IPC: G01J3/02 ,  G01J1/44 ,  G01J3/04 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28 ,  G01J3/42

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

Abstract: A system for rapid-scan spectral analysis comprising a concave holographic diffraction grating 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. The angular velocity and angular acceleration of the grating 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 so that each data point corresponds to a wavelength.

Abstract translation: 一种用于快速扫描光谱分析的系统，包括以基本上恒定的角速度连续旋转的凹面全息衍射光栅，以提供快速扫描单色仪（使用单色仪将标称的波长区域转移出连续光源）。 独特的采样电路采用光轴编码器。 光栅的角速度和角加速度由时间测量计算，就在感兴趣的第一波长落在检测器之前。 该信息用于控制整个感兴趣区域的模数转换器采样率。 作为时间的函数的样本被存储在存储器缓冲器中，使得每个数据点对应于波长。

公开(公告)号：US4710024A

公开(公告)日：1987-12-01

申请号：US881331

申请日：1986-07-02

Applicant: Toshiaki Fukuma

Inventor： Toshiaki Fukuma

IPC: G01J3/06 ,  G01J3/28 ,  G01J3/42

CPC classification number: G01J3/28 ,  G01J2003/062 ,  G01J2003/066

Abstract: A spectrophotometer wherein the diffraction grating is driven directly by a pulse motor and the wavelength of the monochromatic light used for measurement is calculated by a data processor from the amount of rotation of the pulse motor. The data processor is provided with an input unit for setting a parameter corresponding to the difference between the nominal and actual grating constants of the diffraction grating and so arranged as to calculate the wavelength in accordance with the nominal grating constant having been modified with the parameter set through the input unit.

Abstract translation: 一种分光光度计，其中衍射光栅由脉冲电机直接驱动，并且用于测量的单色光的波长由数据处理器根据脉冲电动机的旋转量计算。 数据处理器设置有输入单元，用于设置与衍射光栅的标称光栅常数和实际光栅常数之间的差相对应的参数，并且被设置为根据已经用参数集修改的标称光栅常数来计算波长 通过输入单元。