公开(公告)号：US06226083B1

公开(公告)日：2001-05-01

申请号：US09305391

申请日：1999-05-05

Applicant: Robert E. Schwerzel ,  Nile F. Hartman

Inventor： Robert E. Schwerzel ,  Nile F. Hartman

IPC: G01J340

CPC classification number: G01J3/18 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/1895 ,  G01J3/50 ,  G01J3/502 ,  G02B6/12004 ,  G02B6/124 ,  G02B6/136 ,  G02B6/42 ,  G02B2006/12176

Abstract: An integrated-optic spectrometer is disclosed for analyzing the composition of light reflected off a sample under analysis. In a simplified embodiment, the spectrometer includes a buffer, located on the top of a substrate, which is etched to create a diffraction grating having grating lines. The diffraction grating and grating lines are formed to provide diffraction of discrete wavelengths of light, while providing for maximum transmission of non-diffracted wavelengths. A waveguide is fabricated on top of the etched buffer through which the reflected light is directed. A photodiode detector array is located above the waveguide into which the diffracted wavelengths are diffracted, providing an analysis of the composition of the reflected light. A clad encompasses the integrated-optic spectrometer, thereby providing protection from outside interference.

Abstract translation: 公开了一种用于分析从分析样品反射的光的组成的集成光谱仪。 在简化的实施例中，光谱仪包括位于衬底顶部的缓冲器，其被蚀刻以产生具有光栅线的衍射光栅。 衍射光栅和光栅线被形成为提供离散波长的光的衍射，同时提供非衍射波长的最大透射。 在经过蚀刻的缓冲器的顶部上制造波导，反射光通过其被引导。 光电二极管检测器阵列位于衍射波长衍射的波导上方，提供对反射光的组成的分析。 包层包含集成光谱仪，从而提供防止外部干扰的保护。

公开(公告)号：US6057925A

公开(公告)日：2000-05-02

申请号：US143482

申请日：1998-08-28

Applicant: Erik W. Anthon

Inventor： Erik W. Anthon

IPC: G01J3/02 ,  G01J3/26 ,  G01J3/28 ,  G01J3/51 ,  G01N21/25

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/26 ,  G01J3/51 ,  G01J3/513 ,  G01J3/2803

Abstract: A color measuring sensor assembly includes an optical filter such as a linear variable filter, and an optical detector array positioned directly opposite from the optical filter a predetermined distance. A plurality of lenses, such as gradient index rods or microlens arrays, are disposed between the optical filter and the detector array such that light beams propagating through the lenses from the optical filter to the detector array project an upright, noninverted image of the optical filter onto a photosensitive surface of the detector array. The color measuring sensor assembly can be incorporated with other standard components into a spectrometer device such as a portable calorimeter having a compact and rugged construction suitable for use in the field.

Abstract translation: 颜色测量传感器组件包括诸如线性可变滤波器的滤光器和与光学滤波器正好相对的预定距离的光学检测器阵列。 多个透镜，例如梯度折射率棒或微透镜阵列，设置在滤光器和检测器阵列之间，使得通过透镜从光学滤波器传播到检测器阵列的光束投射光学滤波器的直立，非反相的图像 到检测器阵列的感光表面上。 色彩测量传感器组件可以与其它标准组件结合到诸如便携式量热计之类的光谱仪装置中，其具有适用于现场的紧凑且坚固的结构。

公开(公告)号：US5900932A

公开(公告)日：1999-05-04

申请号：US887423

申请日：1997-07-02

Applicant: Giordano Bruno Beretta

Inventor： Giordano Bruno Beretta

IPC: G01J3/46 ,  G01J3/51 ,  G01J3/18 ,  G01J3/50

CPC classification number: G01J3/51 ,  G01J3/0259 ,  G01J3/502 ,  G01J2003/467 ,  G01J3/465

Abstract: A template-type calorimeter comprising a light-transparent substrate having a diffraction grating on a surface thereof, the diffraction grating being operative to diffract light incident thereon from a spaced-apart aperture into its constituent spectral components. A template is provided on a surface of the substrate and arranged to receive the diffracted spectral components. The template has formed thereon at least three spatial filters, each for selectively transmitting diffracted spectral components in accordance with respective ones of the desired color-matching functions such as the CIE x(.lambda.), y(.lambda.), z(.lambda.) or r(.lambda.), g(.lambda.), b(.lambda.) color-matching functions. The diffraction grating and the template may be mounted on opposite sides of the substrate, or they may be mounted in a laterally spaced-apart relationship on the same side of the substrate, in which case the opposite side of the substrate is coated with a reflective material. Detectors are arranged adjacent and behind each spatial filter to detect the spectral components transmitted by the respective filters, and the entire assembly is mounted in a light-tight housing which houses the aperture and the assembly in the desired spaced-apart relationship.

Abstract translation: 一种模板型量热计，其包括在其表面上具有衍射光栅的透光基板，所述衍射光栅可操作以将从其间隔开的孔入射的光衍射成其组成光谱分量。 在衬底的表面上提供模板，并设置为接收衍射光谱分量。 模板上形成有至少三个空间滤波器，每个空间滤波器用于根据期望的颜色匹配功能（例如CIE + E，ovs x + EE（λ），+ E，ovs y）中的相应的选择性地传输衍射光谱分量 + EE（λ），+ E，ovs z + EE（λ）或+ E，ovs r + EE（λ），+ E，ovs g + EE（λ），+ E，ovs b + 匹配功能。 衍射光栅和模板可以安装在基板的相对侧上，或者它们可以在基板的相同侧上以横向间隔的关系安装，在这种情况下，基板的相对侧被涂覆有反射 材料。 检测器被布置在每个空间滤波器的相邻和后方，以检测由各个滤光器传输的光谱分量，并且整个组件安装在不透光的壳体中，该外壳以期望的间隔关系容纳孔和组件。

公开(公告)号：US5754290A

公开(公告)日：1998-05-19

申请号：US749878

申请日：1996-11-15

Applicant: Slobodan Rajic ,  Charles M. Egert ,  William K. Kahl ,  William B. Snyder, Jr. ,  Boyd M. Evans, III ,  Troy A. Marlar ,  Joseph P. Cunningham

Inventor： Slobodan Rajic ,  Charles M. Egert ,  William K. Kahl ,  William B. Snyder, Jr. ,  Boyd M. Evans, III ,  Troy A. Marlar ,  Joseph P. Cunningham

IPC: G01J3/28

CPC classification number: G01J3/28 ,  G01J3/0259

Abstract: A monolithic spectrometer is disclosed for use in spectroscopy. The spectrometer is a single body of translucent material with positioned surfaces for the transmission, reflection and spectral analysis of light rays.

Abstract translation: 公开了用于光谱学的单片光谱仪。 光谱仪是单体半透明材料，具有定位的表面，用于光线的透射，反射和光谱分析。

公开(公告)号：US5642189A

公开(公告)日：1997-06-24

申请号：US489750

申请日：1995-06-12

Applicant: Mark J. Alguard

Inventor： Mark J. Alguard

IPC: G01J3/10 ,  G01J3/50 ,  G01N21/25 ,  G01N21/86 ,  G01N21/88 ,  G01N21/89 ,  G01N21/892 ,  G01N21/93 ,  G01N21/27 ,  G01N21/64

CPC classification number: G01J3/50 ,  G01J3/0259 ,  G01J3/10 ,  G01J3/502 ,  G01J3/524 ,  G01N21/255 ,  G01N21/86

Abstract: Disclosed is an apparatus for measuring on-line the color and color-related properties of a moving sheet. Contrast ratio reflectance measurements are made for providing opacity corrections substantially in real time for a full color spectrum. An optical color sensor in accordance with the invention includes a pair of synchronized spectrometers, the first spectrometer being aligned to view a region of the sheet backed with a highly reflective ("white") material and the second spectrometer being aligned to view a region of the sheet backed with a highly absorptive ("black") material. The use of two spectrometers permits substantially simultaneous "black" and "white" measurements for a full color spectrum. The optical color sensing system further includes two light sources, a flashlamp and a continuously energized tungsten filament lamp. Light beams from the two sources are combined to form a sheet-illuminating third beam approximating the D65 standard source. The intensity of the flashlamp is electronically controlled to maintain the balance of UV to visible light that characterizes the standard source. The color sensor further includes a sheet backing system including a rotatable standard wheel carrying a white standard tile. Provision is made to permit rotation of the standard wheel and to standardize the sensor off-sheet while maintaining isolation of the white standard tile from the paper mill environment. The sheet backing system includes a paper guide plate defining an annular vortex space into which air is introduced from a pressurized source. A low pressure region thereby produced in the vortex space draws the paper sheet toward the guide plate. At the same time, circulating air spirals outwardly from the vortex space to form a thin air film or air bearing between the sheet and the paper guide. Sheet flutter is thereby minimized and damage to the sheet is prevented.

Abstract translation: 公开了一种用于在线测量移动片材的颜色和颜色相关性质的装置。 对比度反射率测量用于为全色谱实质上实时提供不透明度校正。 根据本发明的光学颜色传感器包括一对同步的光谱仪，第一光谱仪被对准以观察具有高反射（“白”）材料的片材的区域，并且第二光谱仪被对准以观察 该片材具有高吸收性（“黑色”）材料。 使用两个光谱仪可以实现全色同步的“黑色”和“白色”测量。 光学颜色感测系统还包括两个光源，闪光灯和连续通电的钨丝灯。 来自两个源的光束被组合以形成近似D65标准源的片状照明第三光束。 闪光灯的强度是电子控制的，以保持紫外线到可见光的平衡，表征标准源。 该颜色传感器还包括一个片材背衬系统，其包括一个承载白色标准砖的可旋转的标准轮。 规定允许标准轮的旋转并标准化传感器脱模，同时保持白色标准砖与造纸厂环境的隔离。 片材背衬系统包括限定了从加压源引入空气的环形涡流空间的导纸板。 由此在涡流空间中产生的低压区将纸张朝向引导板拉出。 同时，循环空气从涡流空间向外螺旋形成在薄片和导纸板之间形成薄的空气薄膜或空气轴承。 因此，片材颤动最小化并且防止了片材损坏。

公开(公告)号：US5228103A

公开(公告)日：1993-07-13

申请号：US929924

申请日：1992-08-17

Applicant: Yung J. Chen ,  John Hryniewicz ,  Pierre Goubet

Inventor： Yung J. Chen ,  John Hryniewicz ,  Pierre Goubet

IPC: G01J3/20 ,  G02B6/124 ,  G02B6/34

CPC classification number: G01J3/20 ,  G01J3/0259 ,  G02B6/124 ,  G01J3/0256 ,  G02B6/29326 ,  G02B6/29328 ,  G02B6/29395 ,  G02B6/4215

Abstract: An active monolithic optical device for wavelength division multiplexing (WDM) incorporating diode laser arrays, an output coupling waveguide and a curved Rowland circle based grating to produce a plurality of individual laser beams at slightly different wavelengths is integrated in a common electro-optic material. The wavelength of each laser source is determined by the geometry of the array and the diffraction grating design. The output of all the channels can be collected into a concentrator or lens to be multiplexed in a single output. Applications include a WDM optical amplifier and WDM laser source.

Abstract translation: 一种用于波分复用（WDM）的有源单片光学器件，其包含二极管激光器阵列，输出耦合波导和基于罗兰圆弧的弯曲曲线，以在稍微不同的波长处产生多个单独的激光束集成在普通电光材料中。 每个激光源的波长由阵列的几何形状和衍射光栅设计决定。 所有通道的输出可以被收集到聚光器或透镜中以在单个输出中多路复用。 应用包括WDM光放大器和WDM激光源。

公开(公告)号：US4779984A

公开(公告)日：1988-10-25

申请号：US17941

申请日：1987-02-24

Applicant: Lacy G. Cook

Inventor： Lacy G. Cook

IPC: G01J3/453 ,  G01J9/02 ,  G02B6/34 ,  G01J3/45

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/0259 ,  G01J3/0294 ,  G01J3/4531 ,  G02B6/12007 ,  G02B6/2931 ,  G02B6/29358 ,  G02B6/4215

Abstract: An integrated optic holographic spectrometer (10) for analyzing electromagnetic radiation from a source (12) is disclosed. The holographic spectrometer (10) comprises a substrate (18) having aperture (20) for restricting the receipt of electromagnetic radiation. The spectrometer (10) also includes two optical waveguides (22, 24) for dividing the electromagnetic radiation received through the aperture (20) into at least a first and second portions. A geodesic lens (26) is provided for collimating the first and second portions of the electromagnetic radiation. Finally, the spectrometer (10) includes a linear detector array (28) optically communicating with the geodesic lens (26) to provide an output responsive to the interference between the first and second portions of the electromagnetic radiation received through the aperture (20).

Abstract translation: 公开了一种用于分析来自源（12）的电磁辐射的集成光学全息光谱仪（10）。 全息光谱仪（10）包括具有用于限制电磁辐射的接收的孔（20）的衬底（18）。 光谱仪（10）还包括用于将通过孔（20）接收的电磁辐射分成至少第一和第二部分的两个光波导（22,24）。 设置测地镜（26）以准直电磁辐射的第一和第二部分。 最后，光谱仪（10）包括与测距透镜（26）光学连通的线性检测器阵列（28），以响应于通过孔（20）接收的电磁辐射的第一和第二部分之间的干涉而提供输出。

公开(公告)号：US20240142303A1

公开(公告)日：2024-05-02

申请号：US18550949

申请日：2021-03-17

Applicant: Agency for Science, Technology and Research

Inventor： Anmin KONG ,  Shaonan ZHENG ,  Lennon Yao Ting LEE

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/28 ,  G06N3/048 ,  G06N3/084

CPC classification number: G01J3/0259 ,  G01J3/12 ,  G01J3/2803 ,  G06N3/048 ,  G06N3/084 ,  G01J2003/1213 ,  G02B6/29343

Abstract: An integrated circuit spectrometer comprises a photonic circuit comprising: an optical input port for receiving light from a light source: and a filter array of filter elements, such as microring resonators, in optical communication with the optical input port. Each microring resonator is characterized by a different series of resonance wavelengths. If alternative filter elements are used, the filter elements may have different filter peaks to each other. The integrated circuit spectrometer also comprises a plurality of detectors, each of which is associated with one of said microring resonators to detect photons from an output of the microring resonator: and at least one processor configured to reconstruct, from signals received at the detectors, an input spectrum of the light received at the optical input port. The input spectrum may be reconstructed by an artificial neural network.

公开(公告)号：US11867556B2

公开(公告)日：2024-01-09

申请号：US17486326

申请日：2021-09-27

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Seunghoon Han ,  Amir Arbabi ,  Andrei Faraon ,  Ehsan Arbabi

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/447 ,  B82Y20/00

CPC classification number: G01J3/0208 ,  G01J3/0205 ,  G01J3/0224 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/2803 ,  G01J3/447 ,  B82Y20/00

Abstract: A spectrometer includes a transparent substrate including a first surface and a second surface that face each other and are substantially parallel to each other; a slit provided on the first surface and through which light is incident onto the transparent substrate; a spectrum optical system including metasurface including a plurality of nanostructures that are two-dimensionally arranged and satisfy a sub-wavelength scattering condition, wherein the metasurface includes a focusing metasurface which includes first nanostructures of the plurality of nanostructures, and is configured to reflect, disperse, and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor configured to receive the light from the focusing metasurface. When L is a total length of an optical path from the slit to the sensor and D is a thickness of the transparent substrate, L and D satisfy the following inequality: L/D>3.

公开(公告)号：US20230273009A1

公开(公告)日：2023-08-31

申请号：US17675179

申请日：2022-02-25

Applicant: Utah State University Space Dynamics Laboratory

Inventor： Aaron Pung

IPC: G01B9/02015 ,  G01J3/02

CPC classification number: G01B9/02028 ,  G01B9/0203 ,  G01J3/0259 ,  G02B6/29349

Abstract: An interferometer includes a coherent light source and an array of electrically coupled light-sensitive pixel elements. The interferometer is configured to direct an internal optical path of the coherent light source and an external optical path of the coherent light source into a monolithic unit cell. In addition, the monolithic unit cell is configured to direct the internal optical path first through the monolithic unit cell and then onto the array and also configured to direct the external optical path back outside the monolithic unit cell through an external environment and then back into the monolithic unit cell and finally onto the array. In addition, interferometer is further configured to combine the internal optical path and the external optical path at the array and produce a first interferogram on the array, the interferogram characterizing an optical property of the external environment.