公开(公告)号：US07301643B2

公开(公告)日：2007-11-27

申请号：US11113068

申请日：2005-04-25

Applicant: Andreas Kenda ,  Werner Scherf ,  Marin Kraft ,  Harald Schenk

Inventor： Andreas Kenda ,  Werner Scherf ,  Marin Kraft ,  Harald Schenk

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G01J3/4532

Abstract: An arrangement for building a compact Fourier transform interferometer for optical radiation according to the Michelson principle or a principle derived therefrom. According to the invention, this arrangement is characterized in that the optical modulation of the radiation in at least one of the interferometer arms is produced by the translational displacement of micromechanical translation mirrors that are optically accessible on one side or on both sides, with an effective oscillation amplitude of at least 50 μm and a usable mirror surface area of at least 1 mm2. In doing so, the micromechanical mirror components according to the invention assume the function of known movable mirrors so that by using an almost massless microcomponent in comparison to conventional systems, a much smaller size and a mirror modulation frequency that is several orders of magnitude higher can be achieved. The arrangement according to the invention is used especially for optical spectroscopy.

Abstract translation: 根据迈克尔逊原理或从其衍生的原理构建用于光辐射的紧凑型傅里叶变换干涉仪的装置。 根据本发明，这种布置的特征在于，通过在一侧或两侧光学可达的微机械平移反射镜的平移位移来产生至少一个干涉仪臂中的辐射的光学调制， 至少50微米的振荡幅度和至少1毫米2的可用镜面积。 在这样做时，根据本发明的微机械镜组件承担了已知可移动镜的功能，使得通过与传统系统相比使用几乎无质量的微组件，更小的尺寸和镜像调制频率高几个数量级 实现。 根据本发明的装置特别用于光谱学。

公开(公告)号：US07115893B1

公开(公告)日：2006-10-03

申请号：US10819496

申请日：2004-04-07

Applicant: Roland A. Wood

Inventor： Roland A. Wood

IPC: G01N15/06

CPC classification number: G01J3/2803 ,  G01J3/0254 ,  G01J3/0256 ,  G01J3/36 ,  G01J3/4531 ,  G01J3/4532 ,  G01J5/60 ,  G01J2003/1213 ,  G01J2003/1239 ,  G01N21/3518 ,  G01N2021/1795

Abstract: A sensor having an input to an interferometer. The input may receive emissions from a detected fluid. The output of the interferometer may be focused on an array of light detectors. Electrical signals from the detectors may go to a processor. The output of the processor may include a spectrum of the detected fluid. Also, the identity of the fluid may be determined.

Abstract translation: 具有对干涉仪的输入的传感器。 输入可以接收来自检测到的流体的排放物。 干涉仪的输出可以集中在光检测器阵列上。 来自检测器的电信号可以去处理器。 处理器的输出可以包括检测到的流体的光谱。 此外，可以确定流体的身份。

公开(公告)号：US20040239939A1

公开(公告)日：2004-12-02

申请号：US10854428

申请日：2004-05-27

Applicant: ONERA

Inventor： Nicolas Guerineau ,  Joel Deschamps ,  Sylvain Rommeluere

IPC: G01B009/02

CPC classification number: H01L31/02165 ,  G01J3/0259 ,  G01J3/26 ,  G01J3/4531 ,  G01J3/4532 ,  H01L27/1446

Abstract: The invention aims to integrate a two-wave stationary interferometer on a photodetector during fabrication in order to constitute a miniature stationary Fourier transform spectrometer. The interferometer essentially comprises a plate having a first plane face coinciding with an image plane on semiconductor photosensitive elements and a second face that is not parallel to the first face. The second face reflects a wave that has a phase difference relative to the incident wave interfering with it that is a function of the local thickness of the plate.

Abstract translation: 本发明的目的是在制造期间将双波段固定干涉仪集成在光电检测器上，以构成微型固定傅里叶变换光谱仪。 干涉仪基本上包括具有与半导体光敏元件上的像平面相重合的第一平面和与第一面不平行的第二面的板。 第二面反射相对于与其干涉的入射波具有相位差的波，该波是板的局部厚度的函数。

公开(公告)号：US06618150B2

公开(公告)日：2003-09-09

申请号：US09932457

申请日：2001-08-16

Applicant: James S. Harris, Jr. ,  Helen L. Kung ,  David A. B. Miller

Inventor： James S. Harris, Jr. ,  Helen L. Kung ,  David A. B. Miller

IPC: G01B902

CPC classification number: G01J3/4532 ,  G01J3/45

Abstract: A spectrometer for determining a spectrum of a light by using a mirror to reflect the light so that the light forms an intensity standing wave pattern through superposition of an incident portion of the light and a reflected portion of the light. The spectrometer is equipped with an intensity detector whose thickness is less than a shortest wavelength of the light being examined and which is semitransparent over the spectrum. The spectrometer has a mechanism to provide relative movement between the mirror and the intensity detector such that the intensity detector registers a variation of the intensity standing wave pattern. An analyzer, such as a Fourier transform analyzer, is employed to determine the spectrum of the light from that variation of the intensity standing wave pattern.

公开(公告)号：US5457531A

公开(公告)日：1995-10-10

申请号：US259254

申请日：1994-06-13

Applicant: Jaakko Rasanen

Inventor： Jaakko Rasanen

IPC: G01B9/02

CPC classification number: G01J3/4532

Abstract: A scanning interferometer includes an optical arrangement. The optical arrangement therein includes two mirrors diverting the travel direction of light, arranged back-to-back such that they reflect to opposite directions and that their optical axes join. The mirrors are arranged in a mounting, which is arranged to move back and forth by a moving mechanism. The mounting includes a base element supported by the body of the interferometer, at least two support arms connected with the base element at their first ends via first bending points and a mounting element connected with the second ends of the support arms via second bending points, the mirrors being fastened to the mounting element. The mechanism moving the mounting includes a assembly generating a linear back-and-forth movement and a transmission mechanism for converting the back-and-forth movement to a back-and-forth movement of the mounting element.

Abstract translation: 扫描干涉仪包括光学装置。 其中的光学布置包括两个反光镜，其将光的行进方向转向背对背地布置，使得它们反射相反的方向并且它们的光轴连接。 反射镜布置在安装件中，该安装件被布置成通过移动机构来回移动。 安装件包括由干涉仪的主体支撑的基座元件，至少两个支撑臂，其第一端部经由第一弯曲点与基座元件连接，以及安装元件，经由第二弯曲点与支撑臂的第二端连接， 镜子被紧固到安装元件。 移动安装件的机构包括产生线性前后运动的组件和用于将往复运动转换成安装元件的往复运动的传动机构。

公开(公告)号：US4915502A

公开(公告)日：1990-04-10

申请号：US142142

申请日：1988-01-11

Applicant: Philip R. Brierley

Inventor： Philip R. Brierley

IPC: G01J3/453

CPC classification number: G01J3/4532

Abstract: A twin-arm interferometer spectrometer having a tiltable reflector assembly, which includes a pair of mutually facing parallel reflective elements, varies the path length of both interferometer arms simultaneously to achieve high resolution in a small, low maintenance design. Collimated electromagnetic radiation is split by a beamsplitter into first and second arm beams. Both arm beams impinge on the tiltable reflector assembly, to retroreflectors, and back to the beamsplitter wherein they recombine to form an exit beam. The exit beam is directed to a sample and then to a suitable detector. Modulation of the exit beam is produced by tilting the reflector assembly about an axis parallel to the reflective elements in the reflector assembly. This tilting causes a simultaneous variation in the path length of both interferometer arms, and thereby yields a large total path difference with a relatively small movement. Symmetry between the paths of the reference beam and test beam results in greater stability and greater immunity to thermal expansion.

公开(公告)号：US4383762A

公开(公告)日：1983-05-17

申请号：US233235

申请日：1981-02-10

Applicant: Peter Burkert

Inventor： Peter Burkert

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

CPC classification number: G01J3/4532

Abstract: A two-beam interferometer for Fourier spectroscopy includes a rigid pendulum structure mounting at least one of the movable retroreflectors in a fully compensated optical system immune to tilt and lateral movement distortions. The swing of the rotatably journaled pendulum accurately confines the retroreflector(s) to movement in a single plane during scanning and, due to the low heat generated in the pendulum bearings, the simple and compact structure is well adapted to be housed in a cryostat aboard a spacecraft.

Abstract translation: 用于傅立叶光谱的双光束干涉仪包括刚性摆式结构，其在完全补偿的光学系统中安装至少一个可移动后向反射器，免受倾斜和横向移动失真的影响。 可旋转轴承摆的摆动在扫描期间将回射器精确地限制在单个平面中的运动，并且由于在摆轴承中产生的低热量，简单紧凑的结构很好地适于容纳在低温恒温器中 一个航天器。

公开(公告)号：US11660027B2

公开(公告)日：2023-05-30

申请号：US16959509

申请日：2019-03-11

Applicant: Google LLC

Inventor： Christopher David Workman ,  Ricky Bomber ,  Kelly Dobson

IPC: A61B5/1455 ,  A61B5/00 ,  G01J3/02 ,  G01J3/453 ,  A61B5/145

CPC classification number: A61B5/1455 ,  A61B5/681 ,  A61B5/6803 ,  A61B5/6898 ,  A61B5/7257 ,  A61B5/7267 ,  G01J3/0272 ,  G01J3/4532 ,  A61B5/14532 ,  A61B5/14546 ,  A61B2562/0238 ,  G01J2003/4534

Abstract: This document describes techniques and devices for Fourier-transform infrared (FT-IR) spectroscopy using a mobile device. A mobile device (502) includes a light source (504) that emits light toward an interferometer (508) that uses mirrors to separate and recombine the light. The interferometer directs the recombined light toward a person. Light reflected from, or transmitted through, the person is received through a reception port (506) to a photodetector (510) that outputs photodetector data that corresponds to a measured light intensity of the reflected and transmitted light as a function of a path length of the light or a mirror position of the interferometer. Based on the photodetector data, an interferogram is generated. Applying a technique such as a Fourier transform to the interferogram, a spectrum data set of the reflected and transmitted light is generated. Based on the spectrum data set, a concentration of solutes in the person's blood is calculated.

公开(公告)号：US20180120086A1

公开(公告)日：2018-05-03

申请号：US15341104

申请日：2016-11-02

Applicant: Matthias Lenzner

Inventor： Matthias Lenzner

IPC: G01B9/02 ,  G01N21/33 ,  G01N21/35 ,  G01N21/31 ,  G01N33/00

CPC classification number: G01N33/0004 ,  G01J3/00 ,  G01J3/1804 ,  G01J3/45 ,  G01J3/4532 ,  G01J3/4537 ,  G01J2003/1208 ,  G01N2033/0093

Abstract: A technique and device to determine the spectrum of electromagnetic radiation in a certain range of wavelengths comprising: splitting said radiation into more than one beam; let these beams counter-propagate in a Sagnac-type ring interferometer; and imprinting a wavelength-dependent angular tilt onto the wavefront of each beam by at least one dispersive element which preferably is a transmission grating or grism; and re-combining the multiple beams on a detector that exhibits spatial resolution and can therefore resolve the fringes formed by interference; and perform the mathematical operations to determine the spectrum of said radiation from the obtained interferogram, wherein the dispersive element is mounted on a stage providing linear and/or rotational movement.

公开(公告)号：US09316539B1

公开(公告)日：2016-04-19

申请号：US14844282

申请日：2015-09-03

Applicant: LightHaus Photonics Pte. Ltd.

Inventor： Poh Boon Phua

IPC: G01J3/46 ,  G01J3/02 ,  G01J3/447

CPC classification number: G01J3/0256 ,  G01J3/0205 ,  G01J3/0229 ,  G01J3/0272 ,  G01J3/447 ,  G01J3/4531 ,  G01J3/4532

Abstract: A spectrometer for measuring a spectral signature of an object comprises fringe generating optics for use with a camera and a processor. The fringe generating optics are formed of front optics and birefringent optics. The front optics comprises a diffuser adapted to receive light from the object. The birefringent optics is adapted to receive light from the diffuser and to generate interference fringes. The camera is adapted to receive the interference fringes and the processor generates the spectral signature of the object. This spectrometer is an improved Fourier transform spectrometer suitable for use with digital cameras, such as cameras found in mobile devices.

Abstract translation: 用于测量物体的光谱特征的光谱仪包括用于照相机和处理器的边缘产生光学器件。 边缘产生光学器件由前光学器件和双折射光学器件形成。 前光学器件包括适于接收来自物体的光的扩散器。 双折射光学器件适于接收来自扩散器的光并产生干涉条纹。 相机适于接收干涉条纹，并且处理器产生对象的光谱签名。 该光谱仪是适用于数码相机的改进的傅里叶变换光谱仪，例如在移动设备中找到的相机。