公开(公告)号：US5276321A

公开(公告)日：1994-01-04

申请号：US944167

申请日：1992-09-12

Applicant: Sheng-Huei Chang ,  Mark J. Westfield

Inventor： Sheng-Huei Chang ,  Mark J. Westfield

IPC: G01V3/17 ,  G01C11/02 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28 ,  G01J3/36 ,  G01N21/00 ,  G01V8/02 ,  G01V8/10 ,  G01V8/14 ,  G01J3/50

CPC classification number: G01J3/06 ,  G01C11/025 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/36 ,  G01V8/02 ,  G01J2003/2866 ,  G01J3/021 ,  G01J3/18

Abstract: A multichannel imaging spectrometer for airborne geological, geophysical and environmental surveys in a moving vehicle. An optical scanner employs a rotating polygon allowing reduced scan optics with increased data acquisition efficiency. Multiple spectrometers integrally registered allow channelization of the received signal to optimize noise performance in the range from ultraviolet through infrared. Output data is in a form for recording and real time display. A staring mode configuration provides enhanced sensitivity by using a two-dimensional detector array and adjustable mirror orientation. A scanning mode embodiment employs a two-dimensional detector array with time delay integration and three-dimensional storage of temporal spatial data and spectral wavelength and intensity. Thus, all channels are acquired simultaneously, resulting in perfect band-to-band registration with continuous spectral curves over the field of view.

Abstract translation: 用于移动车辆中的空中地质，地球物理和环境调查的多通道成像光谱仪。 光学扫描器采用旋转多边形，允许减少的扫描光学器件具有更高的数据采集效率。 整体记录的多个光谱仪允许接收信号的通道化，以在紫外到红外范围内优化噪声性能。 输出数据是用于记录和实时显示的形式。 凝视模式配置通过使用二维检测器阵列和可调整的镜子方向提供增强的灵敏度。 扫描模式实施例采用具有时间延迟积分和时间空间数据和光谱波长和强度的三维存储的二维检测器阵列。 因此，所有通道都被同时获取，从而在视野范围内实现了带有连续光谱曲线的完美的带对带配准。

公开(公告)号：US5268737A

公开(公告)日：1993-12-07

申请号：US469006

申请日：1990-01-23

Applicant: Toshiaki Fukuma ,  Tatsumi Sato ,  Hidehisa Nishigaki

Inventor： Toshiaki Fukuma ,  Tatsumi Sato ,  Hidehisa Nishigaki

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

CPC classification number: G01J3/28 ,  G01J3/06 ,  G01J2003/062 ,  G01J3/1804 ,  G01J3/42

Abstract: A spectrophotometer of the type using a pulse motor to rotate a diffraction grating through a speed reducing mechanism has a capability of constructing a conversion table according to a program, by which table a rotation amount of the motor is converted to a corresponding wavelength of output light from a monochromator. The spectrophotometer is capable of designating a calibration mode in which an emission peak at a known wavelength of light from a light source is detected, a coefficient in a conversion equation is determined on the basis of the known wavelength of the emission peak and a rotation amount of the motor at a time when the emission peak is detected, and the determined coefficient is used to construct the conversion table which is then stored in a nonvolatile memory. In an analysis mode, a rotation amount of the motor is converted to a corresponding wavelength in accordance with the conversion table in the nonvolatile memory.

公开(公告)号：US5251006A

公开(公告)日：1993-10-05

申请号：US666139

申请日：1991-03-07

Applicant: David E. Honigs ,  Timothy G. Kelly

Inventor： David E. Honigs ,  Timothy G. Kelly

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/42 ,  G01N21/27 ,  G01J3/06 ,  G01J3/18

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

Abstract: In a spectrophotometer having an oscillating grating, 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.

公开(公告)号：US5233405A

公开(公告)日：1993-08-03

申请号：US788444

申请日：1991-11-06

Applicant: Kenneth R. Wildnauer ,  James R. Stimple ,  John D. Knight ,  Joseph N. West ,  Barry G. Broome

Inventor： Kenneth R. Wildnauer ,  James R. Stimple ,  John D. Knight ,  Joseph N. West ,  Barry G. Broome

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28

CPC classification number: G01J3/18 ,  G01J2003/062 ,  G01J2003/069 ,  G01J2003/1819 ,  G01J2003/1828 ,  G01J3/0221 ,  G01J3/2889

Abstract: A double pass scanning monochromator for use in an optical spectrum analyzer includes an input optical fiber for emitting an input light beam, a diffraction grating for diffracting the input light beam to produce a spatially dispersed light beam, a slit for passing a selected portion of the dispersed light beam, a motor for rotating the diffraction grating, a shaft angle encoder for sensing grating position, and an output optical fiber. The light that passes through the slit is directed to the diffraction grating and is recombined by the diffraction grating to produce an output light beam. The light beam to be analyzed is incident on the diffraction grating during first and second passes. A polarization rotation device rotates the polarization components of the light beam by 90.degree. between the first and second passes so that the output of the monochromator is independent of the polarization of the input light beam. The output optical fiber is translated by a micropositioning assembly in a plane perpendicular to the output light beam during rotation of the diffraction grating to automatically track the output light beam and to provide optical chopping.

公开(公告)号：US5223913A

公开(公告)日：1993-06-29

申请号：US858631

申请日：1992-03-27

Applicant: Osamu Ando ,  Toshiaki Fukuma

Inventor： Osamu Ando ,  Toshiaki Fukuma

IPC: G01J3/00 ,  G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/12 ,  G01J3/18

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

Abstract: A spectrophotometer including: a) a light source switching mechanism for switching a plurality of light sources by swinging a light source mirror; b) a filter selecting mechanism; c) a diffraction grating rotating mechanism; and d) a controller for determining the operation origins of the three driving mechanisms using a rough origin sensor 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.

公开(公告)号：US5184193A

公开(公告)日：1993-02-02

申请号：US293218

申请日：1989-01-04

Applicant: David A. LeFebre

Inventor： David A. LeFebre

IPC: G01J1/18 ,  G01J3/06 ,  G01J3/08 ,  G01J3/42

CPC classification number: G01J3/08 ,  G01J2001/182 ,  G01J2003/068 ,  G01J3/42 ,  G01N2201/04 ,  G01N2201/0833

Abstract: Spectrophotometric apparatus and methodology suitable for continuous and long-term use. The apparatus includes a monochromator providing pre-dispersed monochromatic light to the optical inputs of a pair of fiber optic cables and a translator for alternatively positioning the fiber optic cables at the same location with respect to the monochromator output. One of the cables conducts light to a sample under study while the other cable provides a reference for light intensity measurements. The methodology includes the steps of performing two scans through the monochromator output for each measurement on the sample. The fiber optic cables are moved between scans so that the cable employed in the latter scan occupies the former position of the cable employed in prior scan.

Abstract translation: 分光光度仪和方法适用于连续和长期使用。 该装置包括单色仪，其将预分散的单色光提供给一对光纤电缆的光输入端，以及用于相对于单色仪输出将光纤缆线替代地定位在相同位置处的转换器。 其中一根电缆对正在研究的样品进行光照，而另一根电缆为光强测量提供参考。 该方法包括通过单色仪输出进行两次扫描以对样本进行每次测量的步骤。 光纤电缆在扫描之间移动，使得在后一扫描中使用的电缆占据先前扫描中使用的电缆的前一位置。

公开(公告)号：US4991934A

公开(公告)日：1991-02-12

申请号：US392428

申请日：1989-08-10

Applicant: Michael C. Hettrick

Inventor： Michael C. Hettrick

IPC: G01J1/04 ,  G01J3/06 ,  G01J3/18 ,  G02B5/18

CPC classification number: G02B5/1861 ,  G01J3/06 ,  G01J3/18 ,  G01J2003/069 ,  G01J2003/1847 ,  G01J2003/1852 ,  G01J3/1804

Abstract: An optical system and method comprising a diffraction grating which consists of diffracting elements spaced from one another by unequal distances. Correction of residual defocusing in the image produced by such a grating is accomplished by translating it along its surface. As one embodiment, a monochromator is constructed on which a self-focusing grating scans the value in wavelength which is transmitted between fixed slits by rotation of the grating about an axis fixed in space. Combined with a translation of the grating along its surface, such a monochromator produces a symmetrical image exactly in focus at the exit slit for all scanned wavelengths.

Abstract translation: 一种光学系统和方法，包括衍射光栅，该衍射光栅由衍射元件彼此间隔不等距离组成。 通过这种光栅产生的图像中的残余散焦的校正是通过沿其表面平移来实现的。 作为一个实施例，构建单色仪，其上自聚焦光栅通过围绕固定在空间中的轴旋转光栅扫描在固定狭缝之间传输的波长值。 结合光栅沿着其表面的平移，这样的单色仪在所有扫描波长的出射狭缝处产生精确对焦的对称图像。

公开(公告)号：US4979123A

公开(公告)日：1990-12-18

申请号：US199765

申请日：1988-05-27

Applicant: Keun Y. Yang

Inventor： Keun Y. Yang

IPC: G01N21/62 ,  G01J1/44 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28 ,  G01J3/32 ,  G01J3/36 ,  G01J3/443 ,  G01N21/67

CPC classification number: G01J3/06 ,  G01J3/28 ,  G01J3/36 ,  G01N21/67 ,  G01J2001/446 ,  G01J2003/2866 ,  G01J2003/2893

Abstract: An apparatus for determining concentrations of mineral elements comprising an improved spectrometer wherein the spectrometer functions to diffract the light to be measured by means of a rotary grating and to determine the strength of light by using a single PM tube and further detects the wavelength of the diffracted light, by using a laser beam generator, reflective mirrors, photo diodes so as to analyze the composition and the concentration of mineral elements.

Abstract translation: 一种用于确定矿物元素浓度的装置，包括改进的光谱仪，其中光谱仪用于通过旋转光栅衍射待测量的光并通过使用单个PM管确定光的强度，并进一步检测衍射的波长 光，通过使用激光束发生器，反射镜，光电二极管，以分析矿物元素的组成和浓度。

公开(公告)号：US4976541A

公开(公告)日：1990-12-11

申请号：US298779

申请日：1989-01-17

Applicant: Theodore J. Scuitto ,  Thomas J. Scuitto ,  Al E. Bernhard

Inventor： Theodore J. Scuitto ,  Thomas J. Scuitto ,  Al E. Bernhard

IPC: G01J3/06 ,  G01N21/31

CPC classification number: G01J3/06 ,  G01N21/3103 ,  G01N2201/0696

Abstract: Each sample is analyzed for all desired elements before starting the next sample, using thermal or nonthermal atomizing devices fro liquid or solid samples. Other new features include the grating drive, lamp-carousel alignment, pulsed atom source, lamp-drift compensation, and dynamic range control. The grating is driven by an arm, the arm by a taut band wound on a drum, and the drum directly by a motor. The lamp carousel mounts on an "L"-shaped rocker with one horizontal and one vertical arm. The carousel rotates on a horizontal axis at the end of the vertical arm. The rocker itself pivots on a horizontal axis at the corner of the L; it is driven about its axis by a motor and screw at the other end of the L. Carousel rotation on its axis moves the right lamp into position and adjusts it accurately in a vertical direction. Pivoting of the rocker simultaneously on its corner axis positions the lamp accurately in a horizontal direction. The pulsed atom source is a combined angled-gas-jet-and-discharge unit. During pulses it yields high absorption with better detectability limits; average power is lower. The lamp-drift compensator makes double duty of the absorber pulsation to obtain a lamp-intensity reading between pulses. Dynamic range control is obtained by even further exploiting the pulsation, namely by taking measurements at a known delay (and decay) time after each pulse.

Abstract translation: 在开始下一个样品之前，使用热或非热雾化装置进行液体或固体样品，分析每个样品中所有需要的元素。 其他新功能包括光栅驱动，灯转盘对准，脉冲原子源，灯漂移补偿和动态范围控制。 光栅由臂驱动，手臂由缠绕在鼓上的拉紧带，鼓由电机直接驱动。 灯转盘安装在“L”形摇臂上，一个水平和一个垂直臂。 圆盘传送带在垂直臂的末端在水平轴上旋转。 摇杆本身在L的角落的水平轴上枢转; 它通过马达和其他轴的螺丝驱动。在其轴上的旋转木马旋转将右灯移动到位并在垂直方向上精确地调整它。 摇杆在其角轴上同时旋转将灯在水平方向上准确地定位。 脉冲原子源是组合的倾斜气体喷射和放电单元。 在脉冲期间，它产生高吸收和更好的可检测限制; 平均功率较低。 灯漂移补偿器使吸收器脉动的双重作用获得脉冲之间的灯强度读数。 通过甚至进一步利用脉动，即通过在每个脉冲之后以已知的延迟（和衰减）时间进行测量来获得动态范围控制。

公开(公告)号：US4968122A

公开(公告)日：1990-11-06

申请号：US313683

申请日：1989-02-21

Applicant: Louis Hlousek ,  Raymond G. Bryan

Inventor： Louis Hlousek ,  Raymond G. Bryan

IPC: G01J3/06 ,  G02B7/00

CPC classification number: G01J3/06 ,  G02B7/00 ,  Y10S359/90

Abstract: An improved mounting for a rotating diffraction grating assembly as used in a spectrophotometer directly connects the grating to the galvanometer that rotates the grating. The galvanometer is gimbally mounted on a plate so that its position, and that of the grating, can be adjusted so that the plane of dispersion of the grating passes through a desired point when the grating is rotated.

Abstract translation: 在分光光度计中使用的旋转衍射光栅组件的改进的安装将光栅直接连接到旋转光栅的电流计。 电流计平板地安装在板上，使得其位置和光栅的位置可以被调节，使得当光栅旋转时光栅的色散平面通过期望的点。