公开(公告)号：US11313721B2

公开(公告)日：2022-04-26

申请号：US16437325

申请日：2019-06-11

Applicant: Oak Analytics

Inventor： Ruibo Wang ,  Pawel Adam Menzfeld

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/06 ,  G01J3/28 ,  G01J3/36 ,  G01J3/44 ,  G01J3/18

Abstract: A compact spectrometer includes an excitation light source configured to generate excitation light and arranged to illuminate a spot on a sample. A dispersive element includes at least one movable component and spatially separates output light emanating from the sample in response to the excitation light into a plurality of different wavelength bands. A moveable component of the dispersive element causes the plurality of different wavelength bands of the output light to be scanned across a detector. The detector includes at least one light sensor that senses the wavelength bands of the output light and generates an output electrical signal in response to the sensed output light.

公开(公告)号：US11307090B2

公开(公告)日：2022-04-19

申请号：US16681192

申请日：2019-11-12

Applicant: MKS TECHNOLOGY

Inventor： Mark Watson ,  Shane Buller ,  Keith Carron

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/44 ,  G01N21/65

Abstract: A spectrometer is provided. In one implementation, for example, a spectrometer comprises an excitation source, a focusing lens, a movable mirror, and an actuator assembly. The focusing lens is adapted to focus an incident beam from the excitation source. The actuator assembly is adapted to control the movable mirror to move a focused incident beam across a surface of the sample.

公开(公告)号：US11300448B2

公开(公告)日：2022-04-12

申请号：US17130295

申请日：2020-12-22

Applicant: Pendar Technologies, LLC

Inventor： Daryoosh Vakhshoori ,  Romain Blanchard ,  Peili Chen ,  Masud Azimi ,  Tobias Mansuripur ,  Kalyani Krishnamurthy ,  Arran M. Bibby ,  Fred R. Huettig, III ,  Gokhan Ulu ,  Greg Vander Rhodes

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/28 ,  G01J3/06 ,  H01S3/00 ,  G01K11/3213 ,  H01S3/094 ,  H01S3/108 ,  H01S3/30 ,  G01K11/324

Abstract: A compact, portable Raman spectrometer makes fast, sensitive standoff measurements at little to no risk of eye injury or igniting the materials being probed. This spectrometer uses differential Raman spectroscopy and ambient light measurements to measure point-and-shoot Raman signatures of dark or highly fluorescent materials at distances of 1 cm to 10 m or more. It scans the Raman pump beam(s) across the sample to reduce the risk of unduly heating or igniting the sample. Beam scanning also transforms the spectrometer into an instrument with a lower effective safety classification, reducing the risk of eye injury. The spectrometer's long standoff range automatic focusing make it easier to identify chemicals through clear and translucent obstacles, such as flow tubes, windows, and containers. And the spectrometer's components are light and small enough to be packaged in a handheld housing or housing suitable for a small robot to carry.

公开(公告)号：US20220090966A1

公开(公告)日：2022-03-24

申请号：US17482512

申请日：2021-09-23

Applicant: Seiko Epson Corporation

Inventor： Kei KUDO

IPC: G01J3/28 ,  G01J3/06 ,  G01J3/02

Abstract: An optical filter includes a variable wavelength interference filter including a pair of reflection films and having a plurality of transmission peak wavelengths according to the dimension of the gap between the pair of reflection films and a fixed wavelength filter disposed so as to face the variable wavelength interference filter and having a plurality of filter regions different from one another in transmission wavelength segment. The plurality of transmission peak wavelengths of the variable wavelength interference filter correspond to the transmission wavelength segments of the plurality of filter regions, respectively. The plurality of transmission peak wavelengths of the variable wavelength interference filter each change within the corresponding transmission wavelength segment of the plurality of filter regions in accordance with a change in the gap dimension.

公开(公告)号：US11262302B2

公开(公告)日：2022-03-01

申请号：US16890950

申请日：2020-06-02

Applicant: The Boeing Company

Inventor： Keith D. Humfeld ,  Morteza Safai

IPC: G01N21/64 ,  G01J3/44 ,  G01J3/02 ,  H01S5/10 ,  G01J3/06 ,  G01J3/28

Abstract: An example system for inspecting a surface includes a laser, an optical system, a gated camera, and a control system. The laser is configured to emit pulses of light, with respective wavelengths of the pulses of light varying over time. The optical system includes at least one optical element, and is configured to direct light emitted by the laser to points along a scan line one point at a time. The gated camera is configured to record a fluorescent response of the surface from light having each wavelength of a plurality of wavelengths at each point along the scan line. The control system is configured to control the gated camera such that an aperture of the gated camera is open during fluorescence of the surface but closed during exposure of the surface to light emitted by the laser.

公开(公告)号：US20210255041A1

公开(公告)日：2021-08-19

申请号：US17271826

申请日：2019-09-04

Applicant: PROVINCIAL HEALTH SERVICES AUTHORITY

Inventor： Zhenguo WU ,  Haishan ZENG ,  Jianhua ZHAO ,  Liwei JIANG

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/10 ,  G01J3/06

Abstract: Systems for confocal Raman spectroscopy of points of interest or regions of interest with concurrent imaging are disclosed. The imaging may be used for real time selection of points of interest or regions of interest for Raman spectroscopy and to monitor for unwanted motions of a sample while Raman spectra are acquired. Disclosed embodiments apply Reflectance confocal microscopy (RCM) in a confocal Raman spectroscopy system. A single laser may be used as a light source for both RCM and micro-Raman spectroscopy. A Faraday optical isolator may be applied to extract RCM signals for imaging. Systems as described herein have example application for ex vivo sample and in vivo skin measurement.

公开(公告)号：US11073423B2

公开(公告)日：2021-07-27

申请号：US16583042

申请日：2019-09-25

Applicant: Flying Gybe Inc.

Inventor： Nicholas Tufillaro ,  Ivan Lalovic ,  Omar Zurita

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/40 ,  G01J3/433 ,  G01J3/18 ,  G01J3/06 ,  G01J3/04 ,  G01J3/42

Abstract: A hyperspectral sensing device may include an optical collector configured to collect light and to transfer the collected light to a sensor having spectral resolution sufficient for sensing hyperspectral data. In some examples, the sensor comprises a compact spectrometer. The device further comprises a power supply, an electronics module, and an input/output hub enabling the device to transmit acquired data (e.g., to a remote server). In some examples, a plurality of hyperspectral sensing devices are deployed as a network to acquire data over a relatively large area. Methods are disclosed for performing dark-current calibration and/or radiometric calibration on data obtained by the hyperspectral sensing device, and/or another suitable device. Data obtained by the device may be represented in a functional basis space, enabling computations that utilize all of the hyperspectral data without loss of information.

公开(公告)号：US20210199502A1

公开(公告)日：2021-07-01

申请号：US16872856

申请日：2020-05-12

Applicant: Zolix Instruments Co., Ltd.

Inventor： Hongtai Cai ,  Haixia Chen

IPC: G01J3/18 ,  G01J3/02 ,  G01J3/06

Abstract: The present disclosure provides a grating rotation method and apparatus for improving spectrograph wavelength accuracy. The grating rotation method comprises: acquiring a start wavelength and an end wavelength of a scanning range; determining a start angle and an end angle of a grating rotation according to preset grating rotation angle series values, the start wavelength and the end wavelength, wherein a wavelength corresponding to the start angle is smaller than the start wavelength, and a wavelength corresponding to the end angle is larger than the end wavelength; and rotating the grating according to the start angle and the end angle to obtain required spectral information. According to the grating rotation scheme provided by the present disclosure, the problem that the obtained spectral accuracy is inconsistent due to different grating rotation angles can be avoided.

公开(公告)号：US11029509B2

公开(公告)日：2021-06-08

申请号：US16788602

申请日：2020-02-12

Applicant: Seiko Epson Corporation

Inventor： Tomonori Matsushita ,  Nozomu Hirokubo

IPC: G02B26/00 ,  G01J3/28 ,  G01J3/26 ,  G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/32 ,  G01J3/42 ,  G01J3/50

Abstract: An optical module includes a wavelength variable interference filter having a fixed reflective film, a movable reflective film which faces the fixed reflective film with a gap between reflective films interposed therebetween, and an electrostatic actuator that changes the gap between reflective films, and a gap control unit that controls the electrostatic actuator. The gap control unit controls the electrostatic actuator on the basis of an order which is set in accordance with a wavelength to be measured, and changes the gap between the reflective films.

公开(公告)号：US11022491B2

公开(公告)日：2021-06-01

申请号：US16848126

申请日：2020-04-14

Applicant: ams Sensors Singapore Pte. Ltd.

Inventor： Peter Riel ,  Peter Roentgen

IPC: G01J3/10 ,  H01S5/04 ,  H01S5/183 ,  H01S5/40 ,  G01J3/06 ,  G01J3/26 ,  H01S5/00 ,  H01S5/10 ,  H01S5/343 ,  H01S3/094 ,  H01S5/323 ,  H01S5/028

Abstract: The present disclosure describes broadband optical emission sources that include a stack of semiconductor layers, wherein each of the semiconductor layers is operable to emit light of a different respective wavelength; a light source operable to provide optical pumping for stimulated photon emission from the stack; wherein the semiconductor layers are disposed sequentially in the stack such that a first one of the semiconductor layers is closest to the light source and a last one of the semiconductor layers is furthest from the light source, and wherein each particular one of the semiconductor layers is at least partially transparent to the light generated by the other semiconductor layers that are closer to the light source than the particular semiconductor layer. The disclosure also describes various spectrometers that include a broadband optical emission device, and optionally include a tuneable wavelength filter operable to allow a selected pass through.