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    Spectrometer arrangement, method for producing a two-dimensional spectrum by means of such a spectrometer arrangement
    1.
    发明授权
    Spectrometer arrangement, method for producing a two-dimensional spectrum by means of such a spectrometer arrangement 有权

    公开(公告)号：US10718666B2

    公开(公告)日：2020-07-21

    申请号：US16225121

    申请日：2018-12-19

    申请人： Analytik Jena AG

    发明人： Stefan Münch ,  Michael Okruss

    IPC分类号： G01J3/04 ,  G01J3/22 ,  G01J3/02 ,  G01J3/18 ,  G01J3/14 ,  G01J3/12

    摘要： The present disclosure discloses a spectrometer arrangement including an entrance-slit group including a slit wheel and a slit mask for introducing radiation into and for limiting the optical field of the spectrometer arrangement, a first dispersive element for spectrally decomposing the radiation in a main dispersion direction, and a second dispersive element for spectrally decomposing the radiation in a transverse dispersion direction that forms an angle with the main dispersion direction to yield a two-dimensional spectrum. The slit wheel is mounted rotatably about an axis of rotation and has a falcate opening having a width that changes depending on the angle. The slit mask includes an opening that is longer than a largest width of the falcate opening such that radiation radiates through the falcate opening of the slit wheel and the opening of the slit mask. The present disclosure further includes a corresponding method and an optical component group.

    Curved grating spectrometer and wavelength multiplexer or demultiplexer with very high wavelength resolution
    5.
    发明授权
    Curved grating spectrometer and wavelength multiplexer or demultiplexer with very high wavelength resolution 有权
    弯曲光栅光谱仪和具有非常高波长分辨率的波长多路复用器或解复用器

    公开(公告)号：US08854620B2

    公开(公告)日：2014-10-07

    申请号：US13911847

    申请日：2013-06-06

    申请人： Seng-Tiong Ho

    发明人： Seng-Tiong Ho ,  Yingyan Huang

    IPC分类号： G01J3/28 ,  G02B6/293 ,  G01J3/20 ,  H04B10/07 ,  G01J3/22 ,  G01J3/02

    CPC分类号： H04B10/07 ,  G01J3/0256 ,  G01J3/20 ,  G01J3/22 ,  G02B6/29326 ,  G02B6/29328

    摘要： The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. In the invention, the location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions. The first one being that the path-difference between adjacent grooves should be an integral multiple of the wavelength in the medium to achieve aberration-free grating focusing at the detector or output slit (or output waveguide) even with large beam diffraction angle from the entrance slit or input slit (or input waveguide). The second one being specific for a particular design goal of a curved-grating spectrometer. In an embodiment, elliptical mirrors each with focal points at the slit and detector are used for each groove to obtain aberration-free curved mirrors.

    摘要翻译： 本申请公开了一种包括紧凑弯曲光栅（CCG）及其相关联的紧凑弯曲光栅光谱仪（CCGS）或紧凑弯曲光栅波长多路复用器/解复用器（WMDM）模块的系统及其制造方法。 该系统能够实现非常小的（分辨率vs.尺寸）RS因子。 在本发明中，可以调整入口狭缝和检测器的位置，以便为特定设计目标具有最佳性能。 使用取决于工作波长的规定公式计算初始槽间距。 基于两个条件计算凹槽的位置。 第一个是相邻槽之间的路径差应该是介质中的波长的整数倍，以便即使在入口处具有大的光束衍射角，也可以在检测器或输出狭缝（或输出波导）处聚焦的无像差光栅 狭缝或输入狭缝（或输入波导）。 第二个特定于曲面光栅光谱仪的特定设计目标。 在一个实施例中，每个具有狭缝和检测器处的​​焦点的椭圆镜用于每个凹槽，以获得无像差的曲面镜。

    Stray-light suppressor for Littrow spectroscope
    6.
    发明授权
    Stray-light suppressor for Littrow spectroscope 失效
    Littrow光谱仪的杂散光抑制器

    公开(公告)号：US4717254A

    公开(公告)日：1988-01-05

    申请号：US894610

    申请日：1986-08-07

    申请人： Toshizo Masuda

    发明人： Toshizo Masuda

    IPC分类号： G01J3/02 ,  G01J3/18 ,  G01J3/22

    CPC分类号： G01J3/18 ,  G01J3/02 ,  G01J3/0262 ,  G01J3/22 ,  G01N2201/064

    摘要： In a Littrow spectroscope including a concave mirror for reflecting light from a source, a diffraction grating for further reflecting the light reflected by the mirror, the grating being made rotatable to allow the mirror to re-reflect the light therefrom, and an exit on which the light re-reflected by the mirror is focused; a stray-light suppressor in the form of a strip is disposed in front of, and horizontally in parallel with the longitudinal central axis of, the mirror. The suppressor is held in front of the mirror at a distance of (L1-L2), where L1 is the distance between the mirror and the grating and L2 is the distance between the grating and the exit. The suppressor portion upon which the stray light from the diffraction grating impinges is tapered.

    摘要翻译： 在包括用于反射来自光源的光的凹面镜的Littrow分光镜中，用于进一步反射由反射镜反射的光的衍射光栅，光栅被制成可旋转以允许反射镜从其反射光，以及出射口 镜子反射的光线集中在一起; 带状形式的杂散光抑制器设置在反射镜的纵向中心轴的前面并且与之平行。 抑制器被保持在反射镜前面（L1-L2）的距离处，其中L1是反射镜和光栅之间的距离，L2是光栅与出口之间的距离。 来自衍射光栅的杂散光撞击的抑制部分是锥形的。

    Temperature insensitive filter
    7.
    发明授权
    Temperature insensitive filter 有权

    公开(公告)号：US11360262B2

    公开(公告)日：2022-06-14

    申请号：US16958476

    申请日：2018-12-31

    申请人： UNIVERSITEIT GENT ,  IMEC VZW

    发明人： Roeland Baets ,  Eva Ryckeboer ,  Abdul Rahim ,  Anton Vasiliev ,  Xiaomin Nie

    IPC分类号： G01J3/18 ,  G01J3/22 ,  G02B6/12 ,  G02B6/124 ,  G02B6/293 ,  G01J3/36 ,  G01J3/12

    摘要： An integrated wavelength-selective filter device comprises a first optical element, for directing received radiation into a direction defined by a first angle, and a second optical element being a diffractive element configured for diffracting the directed radiation under a second angle. The second angle is such that for a single reference wavelength the diffracted radiation is directed into a propagation medium for advancing therein towards a predetermined position on the first optical element or on a further optical element for filtering radiation having a wavelength substantially matching the reference wavelength from radiation having a substantially different wavelength. The propagation medium is formed from a material that is different from any material of the substrate of the first and the second optical element.

    SPECTROMETER ARRANGEMENT, METHOD FOR PRODUCING A TWO-DIMENSIONAL SPECTRUM BY MEANS OF SUCH A SPECTROMETER ARRANGEMENT
    8.
    发明申请
    SPECTROMETER ARRANGEMENT, METHOD FOR PRODUCING A TWO-DIMENSIONAL SPECTRUM BY MEANS OF SUCH A SPECTROMETER ARRANGEMENT 审中-公开

    公开(公告)号：US20190186992A1

    公开(公告)日：2019-06-20

    申请号：US16225121

    申请日：2018-12-19

    申请人： Analytik Jena AG

    发明人： Stefan Münch ,  Michael Okruss

    IPC分类号： G01J3/04 ,  G01J3/18 ,  G01J3/02 ,  G01J3/22

    摘要： The present disclosure discloses a spectrometer arrangement including an entrance-slit group including a slit wheel and a slit mask for introducing radiation into and for limiting the optical field of the spectrometer arrangement, a first dispersive element for spectrally decomposing the radiation in a main dispersion direction, and a second dispersive element for spectrally decomposing the radiation in a transverse dispersion direction that forms an angle with the main dispersion direction to yield a two-dimensional spectrum. The slit wheel is mounted rotatably about an axis of rotation and has a falcate opening having a width that changes depending on the angle. The slit mask includes an opening that is longer than a largest width of the falcate opening such that radiation radiates through the falcate opening of the slit wheel and the opening of the slit mask. The present disclosure further includes a corresponding method and an optical component group.

    Multiband spatial heterodyne spectrometer and associated methods
    10.
    发明授权
    Multiband spatial heterodyne spectrometer and associated methods 有权
    多频段空间外差谱仪及相关方法

    公开(公告)号：US08922783B2

    公开(公告)日：2014-12-30

    申请号：US13442574

    申请日：2012-04-09

    申请人： Andrew Bodkin

    发明人： Andrew Bodkin

    IPC分类号： G01B9/02 ,  G01J3/45 ,  G01J3/453 ,  G01J3/28 ,  G01J3/36 ,  G01J3/02 ,  G01J3/22

    CPC分类号： G01J3/45 ,  G01J3/02 ,  G01J3/021 ,  G01J3/22 ,  G01J3/2823 ,  G01J3/36 ,  G01J3/453

    摘要： A multiband spatial heterodyne spectrometer for determining spectra in first and second wavelength bands has a beamsplitter configured to split incident light and to direct the incident light upon a first and a second diffraction grating. The gratings are configured for Littrow reflection of incident light of the first wavelength band at a first order and Littrow reflection of incident light of the second wavelength band at a second order. Light reflected by the first and the second diffraction grating forms diffraction patterns imaged by an electronic camera. A dispersive device separates the imaged interference patterns onto separate groups of pixel sensors corresponding to the wavelength bands. A processing device receives information from the detector and computes spectra therefrom. The second diffraction grating is split spatially or temporally to provide two different responses, so the system can disambiguate spectra. In embodiments, the spectrometer computes hyperspectral images of a target.

    摘要翻译： 用于确定第一和第二波长带中的光谱的多频带空间外差光谱仪具有被配置为分离入射光并将入射光引导到第一和第二衍射光栅上的分束器。 光栅被配置为以第一阶次的第一波长带的入射光和第二波长带的入射光的Littrow反射的二次反射。 由第一和第二衍射光栅反射的光形成由电子照相机成像的衍射图案。 分散装置将成像的干涉图案分离成对应于波长带的单独的像素传感器组。 处理装置从检测器接收信息并从其计算光谱。 第二个衍射光栅在空间上或时间上分裂以提供两种不同的响应，因此系统可以消除光谱的歧义。 在实施例中，光谱仪计算目标的高光谱图像。