公开(公告)号：US20150292859A1

公开(公告)日：2015-10-15

申请号：US14252564

申请日：2014-04-14

Applicant: Finite Element Analyst, Inc.

Inventor： Eyad Ammari

IPC: G01B9/02 ,  G01J3/453

CPC classification number: G01B9/02043 ,  G01J3/4535 ,  G01J3/4537 ,  G01N2021/3595

Abstract: This disclosure provides an optical interferometer including a multi-faceted optical element that is rotated to introduce an optical path length difference between two different optical paths in the interferometer. The multi-faceted optical element can be configured to be rotated about an axis such that the optical path length difference between the first and second optical paths varies between a first value and a second value several times during one complete rotation of the optical element. The multi-faceted optical element can be rotationally symmetric having n-fold rotational symmetry. The two different optical paths can be non-coplanar with respect to each other and the multi-faceted optical element can be disposed in one of the optical paths or both the optical paths.

Abstract translation: 本公开提供了一种包括多面光学元件的光学干涉仪，其被旋转以在干涉仪中的两个不同光路之间引入光程差。 多面光学元件可以被配置为围绕轴旋转，使得在光学元件的一次完整旋转期间，第一和第二光路之间的光程长度差在第一值和第二值之间变化多次。 多面光学元件可旋转对称具有n倍旋转对称性。 两个不同的光路可以相对于彼此是非共面的，并且多面光学元件可以设置在光路中的一个或两个光路中。

公开(公告)号：US20080068612A1

公开(公告)日：2008-03-20

申请号：US11805897

申请日：2007-05-26

Applicant: Christopher Manning

Inventor： Christopher Manning

IPC: G01J3/45

CPC classification number: G01J3/4537 ,  G01J2003/061 ,  G01J2003/062 ,  G01J2003/067

Abstract: A novel tilt-insensitive interferometer geometry is described. The design uses tilt-insensitive optics to simultaneously maintain high throughput and precise interferometric alignment, even in the presence of non-ideal scanning motions. A variety of enhancements to the basic design are described, providing a family of related interferometer designs. These spectrometers have applications in spectrometry, spectral imaging and metrology.

Abstract translation: 描述了一种新颖的倾斜不敏感干涉仪几何形状。 该设计使用倾斜不敏感光学器件，即使在存在非理想扫描运动的情况下，也能同时保持高通量和精确的干涉测量对准。 描述了对基本设计的各种增强，提供了一系列相关的干涉仪设计。 这些光谱仪具有光谱，光谱成像和计量学应用。

公开(公告)号：US5883713A

公开(公告)日：1999-03-16

申请号：US931421

申请日：1997-09-16

Applicant: John E. Davis ,  Marion Todd

Inventor： John E. Davis ,  Marion Todd

IPC: G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4537

Abstract: A Fourier transform interferometer for rapid scanning of scenes such as explosions wherein an incoming beam of light to be analyzed is split by a beam splitter into a first portion and a second portion. The first portion of the incoming light is sent down one arm of the interferometer where it passes through a rotating scanning cube for changing the path length in that arm of the interferometer. The light is then reflected by a retro mirror and sent back through the scanning cube to the beam splitter for sending a portion of the returning beam to a detector. The second portion of the incoming light is sent down a second arm of the interferometer where it passes through a compensator. The light is then reflected by a retro mirror and sent back through the compensator to the beam splitter for sending a portion of the returning beam to a detector. The first and second portions of the incoming light having differing path lengths interfere and the detector measures the fringes created.

Abstract translation: 一种用于快速扫描诸如爆炸的场景的傅里叶变换干涉仪，其中待分析的入射光束被分束器分裂成第一部分和第二部分。 入射光的第一部分被传送到干涉仪的一个臂上，在其中它通过旋转扫描立方体，以改变干涉仪臂中的路径长度。 然后光被后视镜反射并通过扫描立方体返回到分束器，以将一部分返回光束发送到检测器。 入射光的第二部分沿干涉仪的第二臂向下传送，其中它通过补偿器。 然后光被后视镜反射并通过补偿器返回到分束器，以将一部分返回光束发送到检测器。 具有不同路径长度的入射光的第一和第二部分干涉并且检测器测量所产生的边缘。

公开(公告)号：US3737235A

公开(公告)日：1973-06-05

申请号：US3737235D

申请日：1972-02-10

Applicant: CARY INSTRUMENTS

Inventor： HAWES R

IPC: G01J3/453 ,  G01N21/19 ,  G01N21/40

CPC classification number: G01J3/4537 ,  G01N21/19

Abstract: Dichroism measurement apparatus includes interferometer means for processing linearly polarized source radiation to provide a beam characterized, for each wavelength, by ellipticity that alternates between left and right circular polarization and between which the beam polarization becomes linear in one direction as the ellipticity alternates from left to right circular polarization, and linear in the orthogonal direction as the ellipticity alternates from right to left circular polarization, the characteristic frequency Nu a of such alternation varying as a function of the wavelength. The interferometer means comprises relatively fixed and movable prisms, both having axes at 45* to the linear polarization direction, and actuating means for effecting such relative movement of said prisms to control the frequencies Nu a.

Abstract translation: 二色性测量装置包括用于处理线性偏振源辐射的干涉仪装置，用于为每个波长提供以在左和右圆偏振之间交替的椭圆率为特征的光束，并且当光束偏振在一个方向上变成线性时，椭圆率从左向左 右圆偏振，并且随着椭圆率从右到左圆偏振交替，在正交方向上线性，这种交替的特征频率nu a作为波长的函数而变化。 干涉仪装置包括相对固定和可移动的棱镜，两者都具有与线性偏振方向成45°的轴线，以及用于实现所述棱镜的这种相对运动以控制频率nu a的致动装置。

公开(公告)号：US09322768B1

公开(公告)日：2016-04-26

申请号：US13796166

申请日：2013-03-12

Applicant: U.S. Army Research Development and Engineering Command

Inventor： Arthur H. Carrieri ,  Tudor N. Buican ,  Erik S. Roese ,  James Sutter ,  Alan C. Samuels

IPC: G01N21/23 ,  G01N21/27 ,  G01N21/71

CPC classification number: G01N21/27 ,  G01B9/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/447 ,  G01J3/45 ,  G01J3/453 ,  G01J3/4537 ,  G01N21/31 ,  G01N21/71 ,  G01N21/94 ,  G01N2201/1296 ,  G05B13/027

Abstract: A pseudo-active chemical imaging sensor including irradiative transient heating, temperature nonequilibrium thermal luminescence spectroscopy, differential hyperspectral imaging, and artificial neural network technologies integrated together. The sensor may be applied to the terrestrial chemical contamination problem, where the interstitial contaminant compounds of detection interest (analytes) comprise liquid chemical warfare agents, their various derivative condensed phase compounds, and other material of a life-threatening nature. The sensor measures and processes a dynamic pattern of absorptive-emissive middle infrared molecular signature spectra of subject analytes to perform its chemical imaging and standoff detection functions successfully.

Abstract translation: 包括辐射瞬态加热，温度非平衡热发光光谱，差分高光谱成像以及人工神经网络技术相结合的伪活性化学成像传感器。 传感器可以应用于陆地化学污染问题，其中检测感兴趣的间质污染化合物（分析物）包括液体化学战剂，它们的各种衍生物凝聚相化合物和其他具有危及生命的物质的物质。 传感器测量和处理主题分析物的吸收发射中红外分子特征谱的动态模式，以成功实现其化学成像和对位检测功能。

公开(公告)号：US20150355027A1

公开(公告)日：2015-12-10

申请号：US14762179

申请日：2014-01-24

Applicant: LAMBDA-X

Inventor： Didier Beghuin

IPC: G01J3/28 ,  G01J3/45 ,  G01J3/02

CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/45 ,  G01J3/4537

Abstract: Described herein is a hyperspectral imaging system in which a polarising beam splitter, a Wollaston prism, an optical system, and a plane mirror are arranged on an optical axis of the imaging system. An imaging detector is provided on which radiation is focused by an imaging lens. The Wollaston prism is imaged on itself by the optical system and the plane mirror so that translation of the Wollaston prism in a direction parallel to a virtual split plane of the prism effectively provides an optical path length difference that is the same for all points in the object field.

Abstract translation: 这里描述的是一种超光谱成像系统，其中偏振分束器，沃拉斯顿棱镜，光学系统和平面镜布置在成像系统的光轴上。 提供了一种成像检测器，在其上由成像透镜聚焦辐射。 Wollaston棱镜通过光学系统和平面镜在其自身上成像，使得Wollaston棱镜在平行于棱镜的虚拟裂缝平面的方向上的平移有效地提供了光路长度差异，其对于 对象字段。

公开(公告)号：US20140185052A1

公开(公告)日：2014-07-03

申请号：US13727782

申请日：2012-12-27

Applicant: Qiushui Chen

Inventor： Qiushui Chen

IPC: G01B9/02

CPC classification number: G01J3/0224 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0237 ,  G01J3/4537

Abstract: The present invention is related to a Fourier-transform spectrometer arrangement comprising a first polarizer, a birefringent plate, a pair of birefringent wedges, a second polarizer, a photo detector, and a control unit. According to the invention, the cross sections of the two birefringent wedges of the birefringent wedge pair are similar triangles, the first wedge is fixed, the second wedge is capable of linearly movement along the side, the optic axes of the pair of birefringent wedges are parallel to each other and orthogonal to the optic axis of the birefringent plate, the polarization of the first polarizer is in 45 degrees with the optical axis of the birefringent plate, the polarization of the first polarizer is also in 45 degrees with the optical axis of the pair of birefringent wedges, the polarization of the second polarizer is parallel, or orthogonal, to the polarization of the first polarizer.

Abstract translation: 本发明涉及包括第一偏振器，双折射板，一对双折射楔形物，第二偏振器，光电检测器和控制单元的傅立叶变换光谱仪装置。 根据本发明，双折射楔形对的两个双折射楔的横截面是相似的三角形，第一楔形件是固定的，第二楔形件能够沿着一侧线性移动，该对双折射楔的光轴是 彼此平行并且与双折射板的光轴正交，第一偏振片的偏振度与双折射板的光轴成45度，第一偏振片的偏振度也在45度的光轴 所述一对双折射楔形物，所述第二偏振片的偏振度与所述第一偏振器的偏振平行或正交。

公开(公告)号：US20050237532A1

公开(公告)日：2005-10-27

申请号：US10518418

申请日：2003-06-19

Applicant: John Edward Perrigo Beale ,  Andrew Harvey ,  David Fletcher-Holmes

Inventor： John Edward Perrigo Beale ,  Andrew Harvey ,  David Fletcher-Holmes

IPC: G01J3/28 ,  G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4537 ,  G01J3/0205 ,  G01J3/2823

Abstract: The present invention relates to an imaging apparatus and comprises input and output polarisers, a first polarising beam splitter and at least one additional polarising beam splitter, a light sensitive detector and focussing means arranged on an axis. The input polariser resolves incident light into a single linear polarisation state. The first polarising beam splitter receives light from the input polarises, and resolves it into equal magnitude orthogonally polarised rays which are mutually spaced and have a path difference therebetween. The or each additional polarising beam splitter is arranged to receive light from the first polarising beam splitter. The transmission axis of the output polariser is parallel to or perpendicular to the transmission axis of the input polarises to resolve the orthogonally polarised light rays having past through the or each additional polarising beam splitter into the same or perpendicular polarisation state as light resolved by the, first polariser. The first polarising beam splitter, the or each additional polarising beam splitter and the focussing means are mutually spaced such that said mutually spaced rays are brought to coincidence whereby interference fringes are produced, the detector being arranged to detect the interference fringes. One beam splitter is mounted for movement perpendicular to said axis, whereas the other beam splitter(s) is/are rigidly mounted against movement.

Abstract translation: 本发明涉及一种成像装置，包括输入和输出偏振器，第一偏振分束器和至少一个附加偏振分束器，光敏检测器和布置在轴上的聚焦装置。 输入偏振器将入射光分解为单线性偏振状态。 第一偏振分束器从输入偏振器接收光，并将其分解成相等的正交偏振光线，它们彼此间隔开并且在它们之间具有路径差。 该或每个附加的偏振分束器布置成接收来自第一偏振分束器的光。 输出偏振器的透射轴平行于或垂直于输入偏振器的透射轴，以将已经通过该或每个附加的偏振光束分离器的正交偏振光束解析为与由该光束分辨的光分解的相同或垂直的偏振状态， 第一个偏振器 第一偏振分束器，或每个附加的偏振分束器和聚焦装置相互间隔开，使得所述相互间隔的射线变得一致，从而产生干涉条纹，检测器被布置成检测干涉条纹。 一个分束器安装成垂直于所述轴线移动，而另一个分束器被刚性地安装成抵抗运动。

公开(公告)号：US5157458A

公开(公告)日：1992-10-20

申请号：US598697

申请日：1990-11-02

Applicant: Heinz Wagner ,  Martin Labhart ,  Ulrich Glaus

Inventor： Heinz Wagner ,  Martin Labhart ,  Ulrich Glaus

IPC: G01B9/02 ,  G01J3/447 ,  G01J3/45 ,  G01J3/453 ,  G01J9/02

CPC classification number: G01J3/447 ,  G01J3/4537 ,  G01B2290/70 ,  G01J2009/0261

Abstract: The polarization interferometer comprises a source of light (1), a collimator (2), a first polarizing means (3), a double-refractive means (4,5,6) and a second polarizing means (7) which polarizes the light emerging from the double-refractive means (4,5,6) and directs it to a photon detector (8). The double-refractive means (4,5,6) consists of two optical wedges (5,6) displaceable along those lateral surfaces which face each other, said wedges complementing each other to a right parallelepiped, and of a double-refractive, plane-parallel plate (4) serving as a compensator. The optical axis of the compensator (4) is twisted in a plane perpendicular to the light beam by a finite angle relative to that of the two wedges (5,6), the optical axes of the two wedges (5,6) coinciding with each other. The optical axes of the two polarizing means (3,7) are arranged perpendicularly or parallely to each other and are aligned non-parallely to the axes of the two wedges (5,6) of the double-refractive means (4,5,6).

Abstract translation: PCT No.PCT / CH90 / 00008 Sec。 371日期1990年11月2日 102（e）1990年11月2日日期PCT 1990年1月15日提交PCT公布。 WO90 / 10191 PCT出版物 日期：1990年9月7日。偏振干涉仪包括光源（1），准直器（2），第一偏振装置（3），双折射装置（4,5,6）和第二偏振装置 （7），其使从双折射装置（4,5,6）出射的光偏振并将其引导到光子检测器（8）。 双折射装置（4,5,6）由两个光楔（5,6）组成，两个光楔（5,6）可沿着彼此面对的侧表面移位，所述楔彼此互补成直角的平行六面体，双折射平面 - 平行板（4）作为补偿器。 补偿器（4）的光轴在垂直于光束的平面中相对于两个楔形物（5,6）的角度被扭转有限的角度，两个楔形物（5,6）的光轴与 彼此。 两个偏振装置（3,7）的光轴彼此垂直或平行布置，并且与双折射装置（4,5，...）的两个楔形物（5,6）的轴线非平行地排列， 6）。

公开(公告)号：US4286877A

公开(公告)日：1981-09-01

申请号：US61010

申请日：1979-07-26

Applicant: William L. Clarke

Inventor： William L. Clarke

IPC: G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4537

Abstract: A refractively scanned interferometer, of the type in which a wedge-shaped prism is moved across one interferometer arm for scanning purposes, in which both the substrate of the beamsplitter and the scanning wedge are optically compensated for by substantially identical elements in the other arm of the interferometer.

Abstract translation: 折射扫描干涉仪，其中楔形棱镜移动通过一个干涉仪臂用于扫描目的，其中分束器的基板和扫描楔都通过在另一个臂的基本相同的元件被光学补偿 干涉仪。