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221.发明授权
公开(公告)号：US5359409A
公开(公告)日：1994-10-25
申请号：US98559
申请日：1993-07-28
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
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.
Abstract translation: 用于光谱分析仪的双通扫描单色仪包括用于发射输入光束的输入光纤，用于衍射输入光束以产生空间分散的光束的衍射光栅，用于使所选择的部分通过的狭缝 分散的光束，用于旋转衍射光栅的电动机，用于感测光栅位置的轴角编码器和输出光纤。 通过狭缝的光被引导到衍射光栅，并且被衍射光栅重新组合以产生输出光束。 要分析的光束在第一次和第二次通过期间入射到衍射光栅上。 偏振旋转装置在第一和第二遍之间使光束的偏振分量旋转90°，使得单色仪的输出与输入光束的偏振无关。 在衍射光栅旋转期间，输出光纤由垂直于输出光束的平面中的微定位组件平移，以自动跟踪输出光束并提供光学切割。
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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。
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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
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.
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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
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.
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公开(公告)号：US5026160A
公开(公告)日：1991-06-25
申请号：US417623
申请日：1989-10-04
Applicant: Paul B. Dorain , Judith B. Snow
Inventor： Paul B. Dorain , Judith B. Snow
CPC classification number: G01J3/02 , G01J3/0218 , G01J3/0221 , G01J3/0259 , G01J3/0294 , G01J3/18 , G01J3/0256 , G01J3/1804 , G01J3/24 , G01J3/2803
Abstract: A solid monolithic spectrograph utilizes the Czerny-Turner geometric confration. It has a base constructed of BK7 optical glass to which all components are affixed with optical epoxy. The compact spectrograph operates in the visible spectrum in second order thereby permitting it to be smaller by a factor of two than if it operated in first order. The spectrograph is programmable and is capable of simultaneous multi-channel measurements of wavelengths and bandwidths of sources in the visible and near infrared spectral regions.
Abstract translation: 固体单片光谱仪采用Czerny-Turner几何配置。 它具有由BK7光学玻璃构成的基座，所有部件都用光学环氧树脂固定。 紧凑型光谱仪在可见光谱中以二次方式操作，从而允许其比以一级操作的方式更小二倍。 光谱仪是可编程的，并且能够同时对可见光和近红外光谱区域中的光源的波长和带宽进行多通道测量。
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Patent Agency Ranking
公开(公告)号：US5020910A
公开(公告)日：1991-06-04
申请号：US488158
申请日：1990-03-05
Applicant: William C. Dunn , Stuart T. Langley
Inventor： William C. Dunn , Stuart T. Langley
CPC classification number: G01J3/18 , G01J3/0259 , G01J3/2803
Abstract: A monolithic diffraction spectrometer having a diffraction grating formed over a light sensing array is provided. The diffraction grating serves to diffract wavelengths of interest to an underlying photosensitive device while diffracting other wavelengths away from the photosensing element. By forming a diffraction grating with a variable pitch, or multiple diffraction gratings having various pitches, any number of specific light wavelengths can be detected with a high degree of precision. When a diffraction grating having a pitch which is in the order of the incident wavelength of light is used, improved sensitivity is achieved.
Abstract translation: 提供了具有形成在光感测阵列上的衍射光栅的单片衍射光谱仪。 衍射光栅用于将感兴趣的波长衍射到下面的光敏器件，同时将其它波长衍射离开感光元件。 通过形成具有可变间距的衍射光栅或具有各种间距的多个衍射光栅，可以高精度地检测任意数量的特定光波长。 当使用具有光入射波长顺序的间距的衍射光栅时，获得了提高的灵敏度。
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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
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。
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公开(公告)号：US4964725A
公开(公告)日：1990-10-23
申请号：US339498
申请日：1989-04-17
Applicant: Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
Inventor： Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
CPC classification number: G01J3/457 , G01J2001/4242 , G01J2003/042 , G01J2003/2866 , G01J3/18 , G01N2021/3114 , G01N2021/3137 , G01N2021/3531 , G01N21/3504
Abstract: The correlational gas analyzer comprises a light source passed through the gas under study, which features a quasiperiodic pattern of the specified spectral band, and an optical system with sequentially positioned along the optical path condensor, input slit iris, dispersing means to decomposed the specified spectral band of the gas under study, and rotatably mounted output slit iris configures as a disc with a plurality of slits, uniformly distributed along its circumference and equidistant from the disc center. The spacing between the centers of adjacent slits is approximately equal to the scan length of the specified spectral band of the gas under study. The output slit iris scans the specified spectral band of the gas under study across a photoreceiver, the output signal whereof drives two electric signal amplifiers. One of the amplifiers is designed as a tuned amplifier, with the resonant frequency thereof defined by a preset relation between the disc rotation speed, the number of maxima or minima in the specified spectral band, and the number of slits in the disc.
Abstract translation: 相关气体分析仪包括通过正在研究的气体的光源，其具有特定光谱带的准周期性图案，以及沿着光路聚光器，输入狭缝虹膜，分散装置分解特定光谱的分光装置的光学系统 并且可旋转地安装的输出狭缝虹膜被配置为具有多个狭缝的盘，其沿其圆周均匀分布并且与盘中心等距。 相邻狭缝的中心之间的间距近似等于被研究气体的规定光谱带的扫描长度。 输出狭缝虹膜通过光接收器扫描正在研究的气体的指定光谱带，其输出信号驱动两个电信号放大器。 放大器中的一个被设计为调谐放大器，其谐振频率由盘旋转速度，指定频谱带中的最大值或最小值的数目与盘中的狭缝数量之间的预设关系限定。
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公开(公告)号：US4963023A
公开(公告)日：1990-10-16
申请号：US339497
申请日：1989-04-17
Applicant: Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
Inventor： Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
CPC classification number: G01J3/457 , G01J2001/4242 , G01J2003/042 , G01J2003/2866 , G01J3/18 , G01N2021/3114 , G01N2021/3137 , G01N2021/3531 , G01N21/3504
Abstract: A correlational gas analyzer, comprising a light source with the light beam passed through the gas under study with a quasiperiodic pattern of the spectral band, and an optical system with sequentially positioned along the light beam condensor, input slit iris, beam dispering element and rotatably mounted output slit iris configured as a disc with a slit shaped as an Archimedes spiral. The Archimedes spiral center is coincident with the disc center and its pitch is approximately equal to the scan length of the specified spectral band of the gas under study. The output slit iris scans the specified spectral band of the gas under study across a photoreceiver, the outputs whereof drive the inputs of a first and second electric signal amplifier, with the outputs thereof connected to connected in series corrector unit and recorder. The first amplifier is a tuned amplifier with resonant frequency defined by the speed of disc rotation and by the number of maxima or minima in the specified spectral band of the gas under study.
Abstract translation: 一种相关气体分析仪，包括具有光束的光源，通过研究中的气体，具有光谱带的准周期性图案，以及沿着光束聚光器，输入狭缝虹膜，光束分散元件和可旋转地顺序地定位的光学系统 安装的输出狭缝虹膜被配置为具有形状为阿基米德螺旋形的狭缝的盘。 阿基米德螺旋中心与圆盘中心重合，其间距近似等于正在研究的气体的指定光谱带的扫描长度。 输出狭缝虹膜通过光接收器扫描正在研究的气体的指定光谱带，其输出驱动第一和第二电信号放大器的输入，其输出连接到串联校正单元和记录器中。 第一个放大器是一个调谐放大器，其谐振频率由盘旋转的速度和正在研究的气体的指定光谱带中的最大值或最小值的数量定义。
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230.发明授权
公开(公告)号：US4938553A
公开(公告)日：1990-07-03
申请号：US168384
申请日：1988-03-15
Applicant: Reinhard Maerz , Cornelius Cremer
Inventor： Reinhard Maerz , Cornelius Cremer
CPC classification number: G02B6/29326 , G01J3/0259 , G01J3/18 , G02B6/12007 , G02B6/124 , G02B6/29328 , G02B6/2938
Abstract: An arrangement for an integrated optical spectrometer having an optical film waveguide and a focusing optical grating with grating lines extending perpendicular to a plane of the film waveguide characterized by the grating having a fixed grating constant so that adjustment and contrast problems can be avoided. The new arrangement can take the form of a film waveguide in coaction with a ribbed waveguide disposed thereon, with the grating being formed in the edges of the ribbed waveguide.
Abstract translation: 一种用于集成光谱仪的装置，其具有光学膜波导和具有垂直于薄膜波导的平面延伸的光栅线的聚焦光栅，其特征在于光栅具有固定的光栅常数，从而可以避免调整和对比度问题。 新布置可以采用薄膜波导的形式，其与布置在其上的肋状波导配合，其中光栅形成在肋状波导的边缘中。
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