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公开(公告)号：US5231462A
公开(公告)日：1993-07-27
申请号：US840863
申请日：1992-02-25
Applicant: Tsing Dschen
Inventor： Tsing Dschen
CPC classification number: G01J3/433 , G01J2003/063 , G01J3/18 , G01J3/26 , G01N2201/069
Abstract: A spectrophotometer useful for measuring absorption or emission bands of a substance irradiated with optical radiation, comprises a light source for producing the optical radiation, a monochromator for isolating light of wavelength (W) from the optical radiation and which modulates the wavelength (W) by a predetermined wavelength amplitude (.delta.W), and a photodetector for detecting the intensity of light passing through the monochromator and for producing a measuring signal in response thereto. The monochromator operates under the control of an electronic control unit which produces a control signal that causes the monochromator to scan across a portion of the spectrum of the optical radiation at a frequency (f.sub.2) to transmit a narrow band of radiation at the wavelength (W). The control unit includes a modulation generator which produces a signal that causes the monochromator to modulate the wavelength (W) by the predetermined wavelength amplitude (.delta.W) at a frequency (f.sub.1). The spectrophotometer also includes an electronic evaluation unit which amplifies an a.c. component of the measuring signal that is attributable to the wavelength modulation in synchronization with the signal produced by the modulation generator. In one preferred embodiment, the monochromator comprises a diffraction grating and a drive unit which causes the diffraction to rotate about a pivot axis and which superimposes an oscillatory motion on the rotational movement. In another preferred embodiment, the monochromator comprises a Fabry-Perot resonator and a drive unit which adjusts the optical length of the Fabry-Perot resonator under the control of the control unit.
Abstract translation: 可用于测量用光辐射照射的物质的吸收或发射带的分光光度计包括用于产生光学辐射的光源，用于隔离来自光学辐射的波长（W）的光的单色仪，并且通过 预定波长幅度（ΔW）和用于检测通过单色仪的光的强度并用于响应于此产生测量信号的光电检测器。 单色仪在电子控制单元的控制下操作，该电子控制单元产生一个控制信号，该控制信号使单色仪以频率（f2）扫描光辐射的一部分光谱，以将波长（W ）。 控制单元包括一个调制发生器，该调制发生器产生一个使单色仪在频率（f1）下将波长（W）调制预定波长振幅（ΔW）的信号。 分光光度计还包括一个电子评估单元，其放大一个等 与由调制发生器产生的信号同步的归因于波长调制的测量信号的分量。 在一个优选实施例中，单色仪包括衍射光栅和驱动单元，该驱动单元使衍射围绕枢转轴线旋转并且在旋转运动上叠加振荡运动。 在另一个优选实施例中，单色仪包括法布里 - 珀罗谐振器和驱动单元，其在控制单元的控制下调节法布里 - 珀罗谐振器的光学长度。
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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
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。
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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
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.
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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。
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公开(公告)号：EP0344783B1
公开(公告)日：1994-03-02
申请号：EP89109948.3
申请日：1989-06-01
Applicant: THE PERKIN-ELMER CORPORATION
Inventor： Wuest, Charles E. , Collins, John B.
IPC: G01J3/28
CPC classification number: G01J3/28 , G01J3/18 , G01J3/32 , G01J2003/063 , G01J2003/066 , G01N21/73 , G01N21/74
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Patent Agency Ranking16.发明公开
公开(公告)号：EP0417551A2
公开(公告)日：1991-03-20
申请号：EP90116600.9
申请日：1990-08-29
Applicant: Pollak, Fred H. , Shen, Hong-En
Inventor： Pollak, Fred H. , Shen, Hong-En
CPC classification number: G01N21/1717 , G01J1/24 , G01J2003/063 , G01J2003/066 , G01N21/55 , G01N2021/1725 , G01N2201/0695 , G01N2201/126
Abstract: In an apparatus for determining characteristics of materials by photoreflectance the sample (62) is irradiated by light from a monochromatic light source (50, 51) and a pump beam source (63). The reflected ligth is analyzed by a detector (56), a lock-in amplifier (55), a A/D converter (66) and a computer (70). The d.c. signal of the detector (56) is kept constant for a certain measurement by means of a variable neutral density filter (58) in the monochromatic light beam. By varying the pump beam wavelength and its modulation frequency by the use of an acousto-optical modulator the component layers, their quality and the properties of the various interfaces in the sample (62) are determined.
Abstract translation: 在通过光反射的材料确定性采矿特性的装置的样品（62）是由光从单色光源（50，51）和泵束源（63）照射。 该反射LIGTH由检测器（56）分析，一个锁相放大器（55），一个A / D转换器（66）和计算机（70）。 直流 所述检测器（56）的信号，用于通过在单色光束的可变的中性密度滤光器（58）的手段某个测量保持恒定。 由通过使用声光调制器的变化的泵浦光束的波长和它的频率调制成分的层，它们的质量和样品（62）中的各种接口的性质是确定的开采。
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公开(公告)号：EP0506063A2
公开(公告)日：1992-09-30
申请号：EP92105251.0
申请日：1992-03-27
Applicant: SHIMADZU CORPORATION
Inventor： Ando, Osamu , Fukuma, Toshiaki
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.
Abstract translation: 一种分光光度计，包括：a）光源切换机构（20），用于通过摆动光源反射镜（3）来切换多个光源（1,2）; b）过滤器选择机构（19）; c）衍射光栅旋转机构（10）; 以及d）控制器，用于使用为衍射光栅旋转机构和光度计提供的粗糙原点传感器（21）来确定三个驱动机构的操作起点。 控制器的操作是：i）通过使过滤器框架的端部接触止动器来确定过滤器的运动的起点; ii）使用粗糙原点传感器确定衍射光栅的粗糙起点; 以及iii）通过检测光度计检测光的最大强度的位置来确定光源镜的移动的起点和衍射光栅的移动的精确起点。
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公开(公告)号：EP0417551A3
公开(公告)日：1991-06-19
申请号：EP90116600.9
申请日：1990-08-29
Applicant: Pollak, Fred H. , Shen, Hong-En
Inventor： Pollak, Fred H. , Shen, Hong-En
CPC classification number: G01N21/1717 , G01J1/24 , G01J2003/063 , G01J2003/066 , G01N21/55 , G01N2021/1725 , G01N2201/0695 , G01N2201/126
Abstract: In an apparatus for determining characteristics of materials by photoreflectance the sample (62) is irradiated by light from a monochromatic light source (50, 51) and a pump beam source (63). The reflected ligth is analyzed by a detector (56), a lock-in amplifier (55), a A/D converter (66) and a computer (70). The d.c. signal of the detector (56) is kept constant for a certain measurement by means of a variable neutral density filter (58) in the monochromatic light beam. By varying the pump beam wavelength and its modulation frequency by the use of an acousto-optical modulator the component layers, their quality and the properties of the various interfaces in the sample (62) are determined.
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公开(公告)号：EP0344783A3
公开(公告)日：1990-12-27
申请号：EP89109948.3
申请日：1989-06-01
Applicant: THE PERKIN-ELMER CORPORATION
Inventor： Wuest, Charles E. , Collins, John B.
IPC: G01J3/28
CPC classification number: G01J3/28 , G01J3/18 , G01J3/32 , G01J2003/063 , G01J2003/066 , G01N21/73 , G01N21/74
Abstract: Iterative compensation of drift of peak positions of spectral lines 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. A series of computer-defined spectral windows each encompasses one spectral band and has a nominal spectral position and an initial spectral center. Each window is scanned such as to determine a peak spectral position. Calculations are made for a spectral offset of the peak position from the initial center for each corresponding window, an average of the offsets for the peaks as a linear function of window position, and a revised spectral center for each window equal to the initial center plus the average offset for the window position determined from the linear function. Each window is shifted correspondingly. The step of successively scanning through each window is repeated such as to determined a new peak position for each corresponding band, whereby each new peak position is maintained near the spectral center of each corresponding window.
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公开(公告)号：EP0506063B1
公开(公告)日：1996-01-17
申请号：EP92105251.0
申请日：1992-03-27
Applicant: SHIMADZU CORPORATION
Inventor： Ando, Osamu , Fukuma, Toshiaki
CPC classification number: G01J3/10 , G01J3/02 , G01J3/0235 , G01J3/027 , G01J3/06 , G01J3/18 , G01J2003/063 , G01J2003/064 , G01J2003/1213
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