Stationary fourier transform spectrometer
    51.
    发明授权
    Stationary fourier transform spectrometer 有权
    固定傅立叶变换光谱仪

    公开(公告)号:US07330266B2

    公开(公告)日:2008-02-12

    申请号:US10854428

    申请日:2004-05-27

    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。

    Interferometer
    52.
    发明申请
    Interferometer 有权
    干涉仪

    公开(公告)号:US20070097378A1

    公开(公告)日:2007-05-03

    申请号:US10577463

    申请日:2004-10-29

    Inventor: Jyrki Kauppinen

    CPC classification number: G01J3/26 G01J3/021 G01J3/4532 G01J3/4535

    Abstract: The present invention relates to an interferometer, comprising at least a beamsplitter (10), at least one end reflector (11) for returning beams (S2, S3), and a set of reflectors (14, 15) for reflecting the beams (S2, S3) between the beamsplitter (10) and the end reflector (11) or the end reflectors, at least some of said set of reflectors (14, 15) being adapted to be rotatable around an axis (ω). Said set of reflectors comprises two angle reflectors (14, 15), constituted by plane reflectors, and the said end reflector (11) is or the end reflectors are an angle reflector constituted by plane reflectors (11′, 11″). An angle line of the end reflector (11) is or the angle lines of end reflectors are arranged perpendicular to an angle line of both of the angle reflectors (14, 15).

    Abstract translation: 本发明涉及一种干涉仪,其至少包括分束器(10),用于返回光束(S 2,S 3)的至少一个端部反射器(11)和一组反射器(14,15),用于反射光束 (10)和端部反射器(11)或端部反射器之间的至少一个(S 2,S 3),所述一组反射器(14,15)中的至少一些适于围绕轴线(ω)旋转。 所述反射器组包括由平面反射器构成的两个角度反射器(14,15),并且所述端部反射器(11)是或端部反射器是由平面反射器(11',11“)构成的角度反射器。 端部反射器(11)的角度线是或端部反射器的角度线垂直于两个角度反射器(14,15)的角度线布置。

    Electro-Optic Imaging Fourier Transform Spectrometer
    53.
    发明申请
    Electro-Optic Imaging Fourier Transform Spectrometer 有权
    电光成像傅里叶变换光谱仪

    公开(公告)号:US20070070354A1

    公开(公告)日:2007-03-29

    申请号:US11518536

    申请日:2006-09-07

    CPC classification number: G01J3/4531 G01J3/2823 G01J3/447 G01J3/4532

    Abstract: An Electro-Optic Imaging Fourier Transform Spectrometer (EOIFTS) for Hyperspectral Imaging is described. The EOIFTS includes an input polarizer, an output polarizer, and a plurality of birefringent phase elements. The relative orientations of the polarizers and birefringent phase elements can be changed mechanically or via a controller, using ferroelectric liquid crystals, to substantially measure the spectral Fourier components of light propagating through the EIOFTS. When achromatic switches are used as an integral part of the birefringent phase elements, the EIOFTS becomes suitable for broadband applications, with over 1 micron infrared bandwidth.

    Abstract translation: 描述了用于高光谱成像的电光成像傅里叶变换光谱仪(EOIFTS)。 EOIFTS包括输入偏振器,输出偏振器和多个双折射相位元件。 偏振器和双折射相元件的相对取向可以机械地或通过使用铁电液晶的控制器来改变,以基本上测量通过EIOFTS传播的光的光谱傅立叶分量。 当消色差开关用作双折射相元件的组成部分时,EIOFTS适用于宽带应用,具有超过1微米的红外带宽。

    Uncooled long-wave infrared hyperspectral imaging
    54.
    发明授权
    Uncooled long-wave infrared hyperspectral imaging 有权
    未冷却的长波红外光谱成像

    公开(公告)号:US07135682B1

    公开(公告)日:2006-11-14

    申请号:US10913306

    申请日:2004-08-05

    Applicant: Paul G. Lucey

    Inventor: Paul G. Lucey

    Abstract: A long-wave infrared hyperspectral sensor device employs a combination of an interferometer with an uncooled microbolometer array camera to produce hyperspectral images without the use of bulky, power-hungry motorized components, making it suitable for UAV vehicles, small mobile platforms, or in extraterrestrial environments. The sensor device can provide signal-to-noise ratios near 200 for ambient temperature scenes with 33 wavenumber resolution at a frame rate of 50 Hz, with higher results indicated by ongoing component improvements.

    Abstract translation: 长波红外高光谱传感器装置采用干涉仪与非冷却的微热辐射计阵列相机的组合,以产生高光谱图像而不使用体积庞大,耗电量大的电动部件,使其适用于无人机,小型移动平台或地外 环境。 传感器设备可以以50 Hz的帧速率为33个波数分辨率的环境温度场景提供接近200的信噪比,并通过正在进行的组件改进指示更高的结果。

    Tilt-compensated interferometers
    55.
    发明授权
    Tilt-compensated interferometers 失效
    倾斜补偿干涉仪

    公开(公告)号:US06967722B2

    公开(公告)日:2005-11-22

    申请号:US10277439

    申请日:2002-10-21

    Abstract: The tilt-compensated interferometers of the present invention are novel variations of Michelson's interferometer that use tilt- and shear-compensation to provide excellent photometric accuracy even when there are imperfections in the scanning motion used to produce variation of path difference. The tilt-compensation mechanism of the present invention consists of antiparallel reflections from a beamsplitter element and a roof reflector element, which elements are held rigidly in alignment. Several particularly useful embodiments of the invention are described. Other advantages of the present invention include photometric stability and reduced cost because manual alignment is not required. This interferometer has applications in spectrometry, spectral imaging and metrology.

    Abstract translation: 本发明的倾斜补偿干涉仪是迈克尔逊干涉仪的新颖变型,其使用倾斜和剪切补偿来提供优异的测光精度,即使在用于产生路径差异的扫描运动中存在缺陷的情况下也是如此。 本发明的倾斜补偿机构包括来自分束器元件和屋顶反射器元件的反平行反射,这些元件被刚性地保持一致。 描述本发明的几个特别有用的实施例。 本发明的其它优点包括光度稳定性和降低的成本,因为不需要手动对准。 该干涉仪具有光谱,光谱成像和计量学应用。

    Interferometer
    56.
    发明授权
    Interferometer 失效
    干涉仪

    公开(公告)号:US6075598A

    公开(公告)日:2000-06-13

    申请号:US809816

    申请日:1997-03-31

    Inventor: Jyrki Kauppinen

    CPC classification number: G01J3/4532

    Abstract: The invention relates to an interferometer comprising a beamsplitter (10), a mirror (11) for retroreflecting beams (S1, S2), at least one pair of mirrors (12, 13) made up of two plane mirrors for reflecting the beams (S1, S2). The pair of mirrors (12, 13) is fitted in a rigid structure (15), which is arranged to rotate around an axis (A). It is characteristic that the beamsplitter (10) is attached to a body (20) supported on the mount and that the axis (A) passes through the body (20). According to a recommended embodiment, the retroreflecting mirror (11) is also attached to the body (20).

    Abstract translation: PCT No.PCT / FI95 / 00503 Sec。 371日期1997年3月31日 102(e)1997年3月31日PCT PCT 1995年9月15日PCT公布。 公开号WO96 / 11387 日期:1996年4月18日本发明涉及一种干涉仪,包括分束器(10),用于回射光束(S1,S2)的反射镜(11),由两个平面镜构成的至少一对反射镜(12,13) 反射光束(S1,S2)。 一对反射镜(12,13)装配在刚性结构(15)中,刚性结构(15)被布置为围绕轴线(A)旋转。 其特征在于,分束器(10)附接到支撑在支架上的主体(20),并且轴线(A)穿过主体(20)。 根据推荐的实施例,回射反射镜(11)也附接到主体(20)。

    Fourier transform spectroscope with quadrangular common path
interferometer
    57.
    发明授权
    Fourier transform spectroscope with quadrangular common path interferometer 失效
    傅立叶变换分光光度计

    公开(公告)号:US5495334A

    公开(公告)日:1996-02-27

    申请号:US735740

    申请日:1991-07-25

    CPC classification number: G01J3/4532 G01J2009/0223

    Abstract: An apparatus for effecting spatial Fourier transform spectroscopic detection of light from a surface luminescent object with high sensitivity by use of a quadrangular common path interferometer. The apparatus includes an improvement which consists of an additional imaging optical system which converges a light beam from the specimen so as to enter the beam splitter. The additional imaging optical system is disposed so that an image position is substantially coincident with the position of the second of three mirrors in the apparatus.

    Abstract translation: 一种通过使用四边形公共路径干涉仪来实现来自具有高灵敏度的表面发光物体的光的空间傅里叶变换光谱检测的装置。 该装置包括一种改进,该附加成像光学系统会聚来自试样的光束以进入分束器。 附加成像光学系统被设置成使得图像位置与装置中的三个反射镜中的第二个反射镜的位置基本一致。

    Micro-electromechanical system (MEMS) interferometer for FT-MIR spectroscopy

    公开(公告)号:US11774289B2

    公开(公告)日:2023-10-03

    申请号:US17453285

    申请日:2021-11-02

    Inventor: Dwight W. Swett

    CPC classification number: G01J3/4532 G01J5/0853 G02B1/002 G02B26/0841

    Abstract: A microelectromechanical (MEMS) interferometer is provided. The MEMS interferometer includes a pair of movable mirrors that are positioned along perpendicular axes, wherein each of the pair of movable mirrors is coupled to a mechanism. The mechanism includes an electrostatic actuator driving a displacement amplification mechanism, and the displacement amplification mechanism driving each of the pair of the movable mirrors. The MEMS interferometer includes a beam splitter that is positioned at an intersection of the perpendicular axes extending through each movable mirror and the beam splitter. The MEMS interferometer also includes a metasurface microbolometer placed in line with the beam splitter to measure an intensity of a recombined beam from the pair of movable mirrors.

    SYSTEM AND METHOD FOR INTERFEROMETRIC BASED SPECTROMETRY AND COMPACT SPECTROMETER USING SAME

    公开(公告)号:US20190056270A1

    公开(公告)日:2019-02-21

    申请号:US15768548

    申请日:2017-03-02

    Inventor: Dario CABIB

    Abstract: An interference fringe pattern generator forms an interference fringe pattern from the light rays diffused from a region of an object positioned against a background. A planar array of detector pixels is arranged to capture an image of the interference fringe pattern. A storage medium records information indicative of intensity values of the image of the interference fringe pattern captured by a selected group of pixels of the planar array of detector pixels. The information is recorded as a function of the optical path difference values traversed by the diffused light rays through the interference fringe pattern generator for each of the pixels in the selected group of pixels. A processor determines the spectral characteristics of the object based on the information indicative of the intensity values recorded by the storage medium and the optical path difference values traversed by the diffused light rays.

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