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：US20230384153A1

公开(公告)日：2023-11-30

申请号：US18328479

申请日：2023-06-02

Applicant: Ouster, Inc.

Inventor： Angus PACALA ,  Mark FRICHTL

IPC: G01J1/42 ,  G01J3/51 ,  G01J3/02 ,  G01S17/89 ,  G01S7/481 ,  G01S17/86 ,  G01J3/46 ,  G01S17/931 ,  G01S7/4863 ,  G01S7/4865 ,  H01L31/02

CPC classification number: G01J1/4204 ,  G01J3/51 ,  G01J3/0224 ,  G01S17/89 ,  G01S7/4817 ,  G01S17/86 ,  G01S7/4815 ,  G01J3/46 ,  G01S17/931 ,  G01S7/4863 ,  G01S7/4865 ,  H01L31/02027 ,  G01S17/88

Abstract: A multispectral sensor array can include a combination of ranging sensor channels (e.g., LIDAR sensor channels) and ambient-light sensor channels tuned to detect ambient light having a channel-specific property (e.g., color). The sensor channels can be arranged and spaced to provide multispectral images of a field of view in which the multispectral images from different sensors are inherently aligned with each other to define an array of multispectral image pixels. Various optical elements can be provided to facilitate imaging operations. Light ranging/imaging systems incorporating multispectral sensor arrays can operate in rotating and/or static modes.

公开(公告)号：US20230296433A1

公开(公告)日：2023-09-21

申请号：US18004452

申请日：2021-05-27

Applicant: ORTA DOGU TEKNIK UNIVERSITESI

Inventor： Emre YUCE ,  Alim YOLALMAZ ,  Cagdas Anil YUKSEL

IPC: G01J3/02 ,  G02B23/06

CPC classification number: G01J3/0202 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0237 ,  G02B23/06 ,  G01J3/42

Abstract: A high-resolution optical spectrometer with multiple diffractive optical elements operates under broadband light and enables spectral splitting with 3D diffractive optical elements. Diffractive optical elements are used to provide concentration of light as well as spectral splitting. Depending on the application, the high-resolution optical spectrometer operates with a reflection or transmission diffractive optical element. The number of operating wavelengths, spectral resolution, and operating bandwidth of diffractive optical elements are flexible depending on application.

公开(公告)号：US20230194425A1

公开(公告)日：2023-06-22

申请号：US18173056

申请日：2023-02-22

Applicant: ACCESS MEDICAL SYSTEMS, LTD.

Inventor： Hong Tan

IPC: G01N21/45 ,  G01J3/02 ,  G01J3/45 ,  G01N21/77 ,  G01N21/85

CPC classification number: G01N21/45 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/024 ,  G01J3/45 ,  G01N21/7703 ,  G01N21/8507 ,  G01N2021/458 ,  G01N2201/0826 ,  G01N2201/0833 ,  G01N2021/772 ,  G01N21/55

Abstract: The present invention is directed to an assembly for use in detecting an analyte in a sample based on thin-film spectral interference. The assembly includes a light source to emit light signals; a light detector to detect light signals; a coupler to optically couple the light source and the light detector to a waveguide tip; a monolithic substrate having a coupling side and a sensing side; and a lens between the waveguide tip and the monolithic substrate. The lens relays optical signals between the waveguide tip and the monolithic substrate.

公开(公告)号：US20230168123A1

公开(公告)日：2023-06-01

申请号：US17922761

申请日：2021-05-05

Applicant: X-Rite Incorporated

Inventor： Chris BOES ,  Richard VAN ANDEL ,  Rob KUSCHINSKY ,  David SALYER ,  Brad REMENAK

IPC: G01J3/02 ,  G01J3/51 ,  G02B13/08 ,  G01N21/25

CPC classification number: G01J3/0294 ,  G01J3/0202 ,  G01J3/0224 ,  G01J3/51 ,  G02B13/08 ,  G01N21/255

Abstract: A multichannel color measurement instrument for measuring spectral properties of a target comprises pick-up optics to collect measurement light, first and second anamorphic optical paths optically coupled to the pick up optics, a pick-up polarizing element located to polarize measurement light in the second anamorphic optical path, a reference anamorphic optical path including a reference illumination source, and a two-dimensional variable filter sensor having an optically transmissive filter function that varies in a first direction parallel to a surface of the variable filter sensor and is substantially constant in a second direction parallel to a surface of the variable filter sensor and orthogonal to the first direction. The anamorphic optical paths spread the measurement light in the first direction direct it on to different portions of the variable filter sensor.

公开(公告)号：US20190113493A1

公开(公告)日：2019-04-18

申请号：US16217534

申请日：2018-12-12

Applicant: Michele Hinnrichs

Inventor： Michele Hinnrichs

IPC: G01N33/00 ,  G02B5/18 ,  G01J3/02 ,  G01J3/26 ,  G01J3/18 ,  G01N21/3504

CPC classification number: G01N33/0027 ,  G01J1/06 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0229 ,  G01J3/027 ,  G01J3/18 ,  G01J3/26 ,  G01J2003/1828 ,  G01J2003/2806 ,  G01J2003/2826 ,  G01N21/3504 ,  G01N2021/3513 ,  G02B5/1885

Abstract: A spectral radiation gas detector has at least one lenslet with a circular blazed grating for diffraction of radiation to a focal plane. A detector is located at the focal plane receiving radiation passing through the at least one lenslet for detection at a predetermined diffraction order. A plurality of order filters are associated with the at least one lenslet to pass radiation at wavelengths corresponding to the predetermined diffraction order, each filter blocking a selected set of higher orders. A controller is adapted to compare intensity at pixels in the detector associated with each of the plurality of order filters and further adapted to determine a change in intensity exceeding a threshold.

公开(公告)号：US20180306644A1

公开(公告)日：2018-10-25

申请号：US15561005

申请日：2016-08-04

Applicant: SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION CO., LTD. ,  SHENZHEN TERAHERTZ SYSTEM EQUIPMENT CO., LTD.

Inventor： Shichang PENG ,  Yi PAN ,  Chen LI ,  Qing DING

IPC: G01J3/433 ,  G01N21/3586 ,  G01J3/28

CPC classification number: G01J3/4338 ,  G01J3/0205 ,  G01J3/0224 ,  G01J3/2803 ,  G01J3/42 ,  G01J2003/2806 ,  G01J2003/421 ,  G01J2003/423 ,  G01J2003/425 ,  G01N21/3563 ,  G01N21/3577 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/49 ,  G01N2201/06113

Abstract: The present application relates to a terahertz time-domain spectroscopy system. In this terahertz time-domain spectroscopy system, the femtosecond laser light radiated by the femtosecond laser is collimated by a first diaphragm, and then is split by a beam splitter into a pump light and a probe light. The pump light passes through the first light path module to generate a terahertz pulse, and the probe light passes through the first light path module to generate a linear polarization probe light having the same optical distance as that of the pump light. The linear polarization probe light and the terahertz pulse are combined by a beam combiner to obtain a light beam to be detected carrying the terahertz pulse information. Two electro-optical crystals with the same thickness are used in a detection device simultaneously. Changing the crystal axis angle of the two electro-optical crystals, there is a phase compensation to the two components o light and e light of the probe light, so as to realize linear detection to high power terahertz pulse and improve measurement accuracy.

公开(公告)号：US09962244B2

公开(公告)日：2018-05-08

申请号：US14764087

申请日：2014-02-13

Applicant: 3SHAPE A/S

Inventor： Bo Esbech ,  Christian Romer Rosberg ,  Mike Van Der Poel ,  Rasmus Kjaer ,  Michael Vinther ,  Karl-Josef Hollenbeck

IPC: H01J40/14 ,  A61C9/00 ,  G01B11/25 ,  G01J3/51 ,  G01J3/02 ,  G01J3/50 ,  G01B11/24

CPC classification number: A61C9/0073 ,  A61C9/006 ,  A61C9/0066 ,  G01B11/24 ,  G01B11/2509 ,  G01B11/2513 ,  G01B11/2518 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0237 ,  G01J3/0278 ,  G01J3/508 ,  G01J3/51 ,  G01J3/513

Abstract: Disclosed are a scanner system and a method for recording surface geometry and surface color of an object where both surface geometry information and surface color information for a block of said image sensor pixels at least partly from one 2D image recorded by said color image sensor.

公开(公告)号：US20180107015A1

公开(公告)日：2018-04-19

申请号：US15787002

申请日：2017-10-18

Applicant: CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement

Inventor： Luc Dümpelmann ,  Benjamin Gallinet

IPC: G02B27/28 ,  G01J3/28 ,  G01J3/02 ,  G02B5/30 ,  G02B5/00 ,  G02B1/08

CPC classification number: G02B27/288 ,  G01J3/0224 ,  G01J3/0256 ,  G01J3/2803 ,  G01J3/2823 ,  G01J2003/1269 ,  G01J2003/1291 ,  G01J2003/2826 ,  G01J2003/2866 ,  G01J2003/2873 ,  G02B1/08 ,  G02B5/008 ,  G02B5/1809 ,  G02B5/203 ,  G02B5/285 ,  G02B5/3083 ,  G02B26/007 ,  G02F1/0136 ,  G02F1/137

Abstract: An angle-stable, miniaturized and integrate-able imaging system based on plasmon resonances or dielectric resonances for multispectral imaging maintaining full spatial resolution of the image sensor. Active tunability of the filter allows color recording, estimation of unknown spectra and determination of spectral singularities, for example laser lines, with the use of a conventional B/W camera. The system is characterized by high angular acceptance, cost-efficient fabrication and ease-of-use. This system can be used in conjunction with other commercial multispectral imaging systems such as RGB cameras to further enhance the spectral resolution. It can be adapted to different spectral ranges, depending on the application.

公开(公告)号：US20170336263A1

公开(公告)日：2017-11-23

申请号：US15597544

申请日：2017-05-17

Applicant: AOI ELECTRONICS CO., Ltd. ,  NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY

Inventor： Hiroki HAYASHI ,  Ichiro ISHIMARU

IPC: G01J3/447 ,  G01J3/45 ,  G01J3/02

CPC classification number: G01J3/447 ,  G01J3/0224 ,  G01J3/0289 ,  G01J3/45 ,  G01J3/50 ,  G01N21/21 ,  G01N21/255 ,  G01N21/55 ,  G01N2021/217 ,  G01N2021/559 ,  G01N2201/0642

Abstract: Reflected light detecting device and method with surface reflected light components collectively be extracted/removed when detecting reflected light arising in casting light onto target-object range having non-planar surface. The device includes: a first illuminating device causing first-measurement light in predetermined polarization direction to enter target-object first region from first direction; polarization optical system position part of first-surface reflected light enters the polarization optical system, the first-surface reflected light being the first-measurement in the first region surface; a second illuminating device causing second-measurement light in the same first-measurement light polarization direction to enter second region from second direction, the second region being on the target-object surface, different from the first region; adjusting direction of the second-measurement light optical axis so part of second-surface reflected light enters the polarization optical system, the second-surface reflected light being the second-measurement in second region surface; and detecting light having passed through the polarization optical system.