公开(公告)号：US20200256732A1

公开(公告)日：2020-08-13

申请号：US16781909

申请日：2020-02-04

Applicant: Honeywell International Inc.

Inventor： Mary Salit ,  Lisa Lust ,  Jeffrey Michael Klein

IPC: G01J3/18 ,  G02B27/10 ,  G02B5/32 ,  G01J3/24 ,  G02B5/20 ,  G02B23/12

Abstract: A method includes receiving collimated light from an optical imaging system and dividing the received light into multiple bands of wavelength. Each band is refocused onto a corresponding diffraction grating having an amplitude function matched to a point spread function (PSF) of the optical imaging system. The light that is not filtered out by the diffraction grating is transmitted onto a corresponding pixel array. An image is reconstructed from data provided by the pixel arrays for each band. The intensity of light scattered by each diffraction grating may be detected, with the image being reconstructed as a function of an average value of detected intensity of scattered light used to scale the known zero-order mode profile, which is added to the image on the pixel array.

公开(公告)号：US5565983A

公开(公告)日：1996-10-15

申请号：US451351

申请日：1995-05-26

Applicant: Thomas W. Barnard

Inventor： Thomas W. Barnard

IPC: G01J1/04 ,  G01J3/02 ,  G01J3/18 ,  G01J3/24 ,  G01J3/26 ,  G01J3/32 ,  G01J3/42 ,  G02B5/18

CPC classification number: G02B27/4244 ,  G01J3/02 ,  G01J3/0229 ,  G01J3/0232 ,  G01J3/18 ,  G01J3/24 ,  G01J3/32 ,  G02B5/1814

Abstract: A spectrometer includes a pair of crossed reflective gratings to effect a spectrally dispersed beam that is focussed to an array detector. The second grating is a plural grating with a surface formed of a first portion and a second portion. The first portion has a groove density for effecting ultraviolet in the dispersed beam. The second portion has a groove density for effecting visible radiation in the dispersed beam. A shutter blocks or exposes the second portion of the grating surface so as to select the first spectral range or the second spectral range for detection. The plural grating surface preferably may be contoured to compensate for aberrations in focussing of the beam to the detector. A computer may be used for selecting spectral lines for analysis, particularly selecting such lines in the second range that are not interfered with by the first range.

Abstract translation: 光谱仪包括一对交叉反射光栅，以实现聚焦于阵列检测器的光谱分散光束。 第二光栅是具有由第一部分和第二部分形成的表面的多个光栅。 第一部分具有用于在分散光束中实现紫外线的凹槽密度。 第二部分具有用于在分散光束中实现可见辐射的凹槽密度。 A快门阻挡或暴露光栅表面的第二部分，以便选择用于检测的第一光谱范围或第二光谱范围。 多个光栅表面优选地可以被轮廓化以补偿光束到检测器的聚焦中的像差。 可以使用计算机来选择用于分析的谱线，特别是在不受第一范围干扰的第二范围内选择这样的线。

公开(公告)号：US20220170792A1

公开(公告)日：2022-06-02

申请号：US17365592

申请日：2021-07-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungho Jang ,  Jungchul Lee ,  Jinseob Kim ,  Gwangsik Park ,  Minhwan Seo ,  Janghwi Lee ,  Wondon Joo ,  Jiyoung Chu ,  Daehoon Han

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/04 ,  G01J3/24

Abstract: Provided is a hyperspectral imaging (HSI) apparatus. The HSI apparatus includes: a first slit plate configured to introduce an output beam; a first aspherical mirror configured to reflect the introduced output beam; a first grating having a planar reflective surface, the first grating configured to generate a plurality of first split beams by splitting the output beam after being reflected by the first aspherical mirror; and a first camera configured to detect the plurality of first split beams.

公开(公告)号：US20150338665A1

公开(公告)日：2015-11-26

申请号：US14797677

申请日：2015-07-13

Applicant: Massachusetts Institute of Technology ,  University of Utah Research Foundation

Inventor： Jose Dominguez-Caballero ,  Rajesh Menon

IPC: G02B27/10 ,  G01J3/28 ,  G01J3/24

CPC classification number: G02B27/1006 ,  F21S41/141 ,  G01J3/0205 ,  G01J3/0216 ,  G01J3/10 ,  G01J3/18 ,  G01J3/24 ,  G01J3/2803 ,  G01J2003/1286 ,  G02B5/32 ,  G02B27/1013 ,  G02B27/1086 ,  G02F1/133609 ,  G03H1/08 ,  G03H2001/262

Abstract: Methods and apparatus for combining or separating spectral components by means of a polychromat. A polychromat is employed to combine a plurality of beams, each derived from a separate source, into a single output beam, thereby providing for definition of one or more of the intensity, color, color uniformity, divergence angle, degree of collimation, polarization, focus, or beam waist of the output beam. The combination of sources and polychromat may serve as an enhanced-privacy display and to multiplex signals of multiple spectral components. In other embodiments of the invention, a polychromat serves to disperse spectral components for spectroscopic or de-multiplexing applications.

Abstract translation: 通过多色染料组合或分离光谱成分的方法和装置。 使用多色染料将多个从各自源的光束组合成单个输出光束，从而提供对强度，颜色，颜色均匀度，发散角，准直度，偏振度， 聚焦或束腰的输出光束。 源和多色消光器的组合可以用作增强型隐私显示器，并且复用多个光谱分量的信号。 在本发明的其它实施方案中，多色染料用于分散光谱成分用于光谱或解复用应用。

公开(公告)号：US5321970A

公开(公告)日：1994-06-21

申请号：US872235

申请日：1992-04-22

Applicant: Anthony M. C. Davies ,  Harald A. Martens

Inventor： Anthony M. C. Davies ,  Harald A. Martens

IPC: G01N21/27 ,  G01J3/00 ,  G01J3/24

CPC classification number: G01N21/274

Abstract: A calibration device for use in a spectrometer has a source of electromagnetic radiation, a detector for detecting electromagnetic radiation from the source, a device for recording the output of the detector, and at least one optical element in an optical path between the source and the detector to separate the electromagnetic radiation into spectral elements separately detected by the detector. The calibration device includes a variation mechanism to selectively modulate the intensity of each spectral element detected by the detector and a mechanism to adjust the variation mechanism so that the input of the detector substantially reproduces the input of electromagnetic radiation that the detector would receive in its normal operation from a sample which the spectrometer is intended to analyse.

Abstract translation: 用于光谱仪的校准装置具有电磁辐射源，用于检测来自源的电磁辐射的检测器，用于记录检测器的输出的装置，以及源和源之间的光路中的至少一个光学元件 检测器将电磁辐射分离成由检测器单独检测的光谱元件。 校准装置包括用于选择性地调制由检测器检测到的每个光谱元件的强度的变化机构和用于调节变化机制的机构，使得检测器的输入基本上再现检测器将在其正常状态下接收的电磁辐射的输入 来自分光计旨在分析的样品的操作。

公开(公告)号：US11134159B2

公开(公告)日：2021-09-28

申请号：US16442716

申请日：2019-06-17

Applicant: Yoichi Kubota ,  Yusuke Taneda ,  Kohei Shimbo

Inventor： Yoichi Kubota ,  Yusuke Taneda ,  Kohei Shimbo

IPC: G01J3/50 ,  G01J3/28 ,  H04N1/00 ,  G01J3/10 ,  G01J3/02 ,  G01J3/52 ,  G01J3/24

Abstract: A spectral characteristic acquisition device according to one aspect of the disclosed technique includes: a color data acquirer comprising a plurality of spectral sensors receiving light reflected from an object irradiated with light and acquiring color data of the object; circuitry configured to estimate a spectral characteristic of the object on a basis of the color data and calibrate the spectral characteristic calculator on a basis of the color data obtained from a calibration color mark having a color mark of a known spectral characteristic; a first conveyer configured to convey the object in a predetermined conveyance direction and conveying the color data acquirer in a direction intersecting the predetermined conveyance direction; and a second conveyer configured to convey the calibration color mark in the predetermined conveyance direction.

公开(公告)号：US09804029B2

公开(公告)日：2017-10-31

申请号：US15120792

申请日：2015-01-16

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Tsuyoshi Sonehara ,  Hiromi Kusaka ,  Akira Fujii ,  Shuhei Yamamoto ,  Takeshi Ooura ,  Michiru Fujioka

IPC: G01J3/30 ,  G01J3/42 ,  G01J3/24 ,  G01J3/44 ,  G02B7/28 ,  G02B7/32 ,  G01N21/65 ,  G02B21/36 ,  G01N21/64 ,  G01J3/02 ,  G01J3/10 ,  G02B21/00 ,  G02B21/16 ,  G02B21/24 ,  G02B27/14

CPC classification number: G01J3/44 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0229 ,  G01J3/0248 ,  G01J3/10 ,  G01J3/4406 ,  G01N21/6458 ,  G01N21/65 ,  G02B7/28 ,  G02B7/32 ,  G02B21/0004 ,  G02B21/16 ,  G02B21/244 ,  G02B21/36 ,  G02B21/365 ,  G02B27/141

Abstract: With a microspectroscopy device provided with an objective lens with a high numerical aperture, a defocus arises from thermal drift, etc., necessitating auto-focusing. Conventional auto-focus based on through-focus image acquisition takes time, and thus, it cannot be applied to continuous measurement over a long time wherein high-speed sampling is carried out. The present invention addresses this problem by having a defocus-sensing beam that has either defocus or astigmatism fall incident on the objective lens. Since how the image of the spot of the beam for defocus sensing blurs differs depending on the orientation of the defocus, real-time detection of the amount and orientation of defocus becomes possible, and high-speed realtime auto-focus becomes possible.

公开(公告)号：US09323070B2

公开(公告)日：2016-04-26

申请号：US14124002

申请日：2012-06-07

Applicant: Henri Johannes Petrus Vink ,  Huibert Visser ,  Aaldert Hidde Van Amerongen

Inventor： Henri Johannes Petrus Vink ,  Huibert Visser ,  Aaldert Hidde Van Amerongen

IPC: G02B27/42 ,  G02B5/18 ,  H01S3/08 ,  H01S3/092 ,  H01S3/0933 ,  G01J3/18 ,  H01S3/16 ,  G02B5/00 ,  G01J3/24

CPC classification number: G02B27/4244 ,  G01J3/18 ,  G01J3/1804 ,  G01J3/24 ,  G02B5/008 ,  G02B5/1828 ,  G02B5/1852 ,  G02B5/1857 ,  G02B5/1866 ,  H01S3/08009 ,  H01S3/092 ,  H01S3/0933 ,  H01S3/1636

Abstract: A manufacturing method for a grating is disclosed for the angular dispersion of light impinging the grating. The grating comprises tapered structures and cavities. A cavity width and/or corrugation amplitude is varied for achieving a desired grating efficiency according to calculation. A method is disclosed for conveniently creating gratings with variable cavity width and/or corrugation amplitude. The method comprises the step of anisotropically etching a groove pattern into a grating master. Optionally a replica is produced that is complementary to the grating master. By variation of an etching resist pattern, the cavity width of the grating may be varied allowing the optimization towards different efficiency goals.

Abstract translation: 公开了一种用于光入射光栅的光的角度色散的光栅的制造方法。 光栅包括锥形结构和空腔。 根据计算，改变空腔宽度和/或波纹幅度以实现期望的光栅效率。 公开了一种方便地创建具有可变腔宽度和/或波纹幅度的光栅的方法。 该方法包括将凹槽图案各向异性蚀刻成光栅母板的步骤。 可选地，产生与光栅母板互补的复制品。 通过蚀刻抗蚀剂图案的变化，可以改变光栅的腔宽度，从而实现不同效率目标的优化。

公开(公告)号：US5973780A

公开(公告)日：1999-10-26

申请号：US226707

申请日：1999-01-07

Applicant: Naohiro Tsuboi ,  Fumikazu Oogishi

Inventor： Naohiro Tsuboi ,  Fumikazu Oogishi

IPC: G01J3/18 ,  G01J3/24

CPC classification number: G01J3/24 ,  G01J3/18

Abstract: An echelle spectroscope has one or more echelle diffraction gratings, one or more elements for separating dispersed light into portions corresponding to different orders of diffraction and one or more imaging means such as imaging mirrors but there is only one image detector. These components are so designed and arranged with respect to one another that the total range of wavelength to be analyzed is divided into a plurality of smaller ranges and the portions of the spectral light from a source corresponding to different ones of these divided wavelength ranges travel on different paths but would each form an image on the same image detector. A shutter is provided so as to selectively allow one of these portions of spectral light corresponding to one of different wavelength ranges to pass through.

Abstract translation: 梯形分光镜具有一个或多个梯形衍射光栅，用于将分散的光分离成对应于不同衍射级的部分的一个或多个元件，以及诸如成像镜的一个或多个成像装置，但是仅存在一个图像检测器。 这些部件相对于彼此被设计和布置，使得要分析的波长的总范围被分成多个较小的范围，并且来自对应于这些分开的波长范围中的不同的光源的光谱光的部分行进 不同的路径，但是它们将在相同的图像检测器上形成图像。 提供快门，以便选择性地允许对应于不同波长范围之一的光谱光的这些部分之一通过。

公开(公告)号：US5949578A

公开(公告)日：1999-09-07

申请号：US26071

申请日：1998-02-19

Applicant: Bernard Sermage

Inventor： Bernard Sermage

IPC: G02B5/18 ,  G01J3/24 ,  G02B27/42

CPC classification number: G02B5/1847 ,  G02B5/1861

Abstract: A reflective grating for the optical diffraction of light rays comprises k juxtaposed, grooved, plane sub-gratings, the planes of the sub-gratings being offset in terms of height with respect to one another along the normal to the plane of the reflective surface of the grooves, enabling the difference in optical path of the grating to be reduced to the difference in optical path between the two ends of a sub-grating.

Abstract translation: 用于光线的光学衍射的反射光栅包括k并置的，带槽的平面子光栅，子光栅的平面相对于彼此沿着与反射表面的平面的法线相对于彼此偏移 能够使光栅的光路的差异减小到子光栅的两端之间的光路的差。