公开(公告)号：US11668864B2

公开(公告)日：2023-06-06

申请号：US15625955

申请日：2017-06-16

Applicant: ANALOG DEVICES, INC.

Inventor： David Frank Bolognia

IPC: G02B5/20 ,  G02B7/00 ,  G02B5/22 ,  G01J3/36 ,  G01J3/02 ,  G02B5/02 ,  G01J3/12

CPC classification number: G02B5/201 ,  G01J3/0202 ,  G01J3/0256 ,  G01J3/36 ,  G02B5/0278 ,  G02B5/226 ,  G02B7/006 ,  G01J2003/1213

Abstract: An array of optical filters having a front side and a back side is disclosed. The array of optical filters includes first and second optical filters and a molding compound. The first and second optical filters each include a substrate having a back surface coplanar with the back side of the molding compound, and a filter layer having a front surface coplanar with the front side of the molding compound. The molding compound covers the sidewalls of the filter substrates and filter layers, and fills gaps between the filters.

公开(公告)号：US11650099B2

公开(公告)日：2023-05-16

申请号：US17302465

申请日：2021-05-04

Applicant: Spectricity

Inventor： Jonathan Borremans ,  Maarten De Bock ,  Ward van der Tempel

IPC: G01J3/26 ,  G01J3/28 ,  G02B5/28 ,  G01J3/12

CPC classification number: G01J3/26 ,  G01J3/2823 ,  G02B5/285 ,  G01J2003/1213 ,  G01J2003/1226

Abstract: A sensor system comprises a plurality of sets optical sensors arranged on an integrated circuit, the plurality of sets optical sensors having a respective top surface. The sensor system further comprising an interface between the plurality of optical sensors and a processing device configured to transmit information there between and an array of optical filters having a respective bottom surface and a respective top surface, where the bottom surface of the optical filter array is located proximal to the top surface of the plurality of sets optical sensors and each optical filter of the optical filter array is configured to pass a target wavelength range of light to a set of optical sensors. The processor is configured to receive an output from each optical sensor in a set of optical sensors and determine a corrected filter response for the set of optical sensors using crosstalk from light transmitted through optical filters adjacent to the set of optical sensors.

公开(公告)号：US20230092614A1

公开(公告)日：2023-03-23

申请号：US17693404

申请日：2022-03-13

Applicant: LITE-ON SINGAPORE PTE. LTD.

Inventor： RUI-TAO ZHENG

IPC: G01J3/12 ,  G02B5/28 ,  G01J3/02 ,  G01J3/45

Abstract: A filter and a miniature spectrum measuring device are provided. The filter includes a plurality of film structures. Each of the film structures includes an H-type structural film, an L-type structural film, and a cavity film disposed between the H-type structural film and the L-type structural film.

公开(公告)号：US11596311B2

公开(公告)日：2023-03-07

申请号：US17666518

申请日：2022-02-07

Applicant: Omni Medsci, Inc.

Inventor： Mohammed N. Islam

IPC: A61B5/00 ,  G01J3/10 ,  G01J3/28 ,  G01J3/14 ,  G01J3/453 ,  G01J3/42 ,  G01J3/02 ,  G01N21/35 ,  G16H40/67 ,  G01N21/359 ,  A61B5/145 ,  G01N33/15 ,  G01N33/49 ,  G01N21/3563 ,  G01N21/39 ,  G01N33/02 ,  G01N33/44 ,  G01N21/88 ,  A61B5/1455 ,  G16Z99/00 ,  A61C19/04 ,  G01N21/3504 ,  H01S3/30 ,  G01J3/18 ,  G01J3/12 ,  G01N21/85 ,  G01N21/95 ,  H01S3/067 ,  H01S3/00 ,  G01M3/38 ,  A61C1/00

Abstract: A measurement system is provided with an array of laser diodes with one or more Bragg reflectors. At least a portion of the light generated by the array is configured to penetrate tissue comprising skin. A detection system configured to: measure a phase shift, and a time-of-flight, of at least a portion of the light from the array of laser diodes reflected from the tissue relative to the portion of the light generated by the array; generate one or more images of the tissue; detect oxy- or deoxy-hemoglobin in the tissue; non-invasively measure blood in blood vessels within or below a dermis layer within the skin; measure one or more physiological parameters based at least in part on the non-invasively measured blood; and measure a variation in the blood or physiological parameter over a period of time.

公开(公告)号：US11579459B2

公开(公告)日：2023-02-14

申请号：US16768506

申请日：2018-05-02

Applicant: Agilent Technologies, Inc.

Inventor： Sean M. Kent ,  Lindsay Buck

IPC: G01J3/12 ,  G02B27/42 ,  G01J3/02 ,  G01J3/18 ,  G01J3/26 ,  G02B17/06 ,  G02B27/00 ,  G02B27/10 ,  G02B27/30

Abstract: A polychromator system comprising: an optical element defining an aperture; a collimation mirror for receiving light via the aperture and reflecting substantially collimated light; at least a first dispersive optical component and a second dispersive optical component, each configured to disperse the substantially collimated light received from the collimation mirror by different amounts for different wavelengths and to provide cross-dispersed light having different wavelengths of light spaced along a first and second axis; and a focus mirror positioned to focus the cross-dispersed light onto a 2-D array detector to provide a plurality of aperture images of the aperture at a respective plurality of regions of the detector, each of the plurality of aperture images associated with a respective wavelength of the cross-dispersed light. Either one or both of the collimation mirror and the focus mirror is a freeform mirror having a reflective surface configured to mitigate effects of optical aberrations of the polychromator system over a plurality of the wavelengths of the cross-dispersed light along the first axis and the second axis and thereby optimise the resolution of the plurality of aperture images associated with the plurality of the wavelengths along the first axis and the second axis.

公开(公告)号：US11573124B2

公开(公告)日：2023-02-07

申请号：US16953910

申请日：2020-11-20

Applicant: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

Inventor： Yukihiro Takahashi ,  Junichi Kurihara ,  Tetsuro Ishida

IPC: H04N7/00 ,  G01J3/28 ,  B64C39/02 ,  B64D47/08 ,  G01J3/02 ,  G01J3/32 ,  G01J3/51 ,  G01N21/31 ,  G02F1/1335 ,  G01J3/12 ,  H04N7/18

Abstract: A spectral image capturing method using a spectral camera control device installed in aircraft, the method comprising:
a) setting an exposure time of the spectral camera so that a current exposure time is determined (S2),
b) determining whether or not either an amount of attitude change or an amount of position change of the spectral camera per exposure time exceeds a predetermined threshold based on a spatial resolution of the spectral camera (S4),
c1) when exceeding the predetermined threshold, resetting the current exposure time to be shorter (S5),
c2) when not exceeding the predetermined threshold, not resetting the current exposure time to be shorter, and
d) capturing a spectral image in a snapshot mode with the spectral camera using the reset exposure time,
wherein when the transmission wavelength of the liquid crystal tunable filter is switched while the aircraft is in a stationary flight, steps b) to d) are repeated.

公开(公告)号：US11570371B2

公开(公告)日：2023-01-31

申请号：US16633667

申请日：2018-07-18

Applicant: Sony Group Corporation

Inventor： Masatoshi Takashima

IPC: H04N5/235 ,  G06T7/90 ,  G01J3/28 ,  G01J1/42 ,  G03B7/097 ,  H04N5/238 ,  G01N21/63 ,  G01J3/12

Abstract: The present technology relates to an imaging apparatus, an imaging method, and a program that perform appropriate exposure control, to thereby enable a desired object to be appropriately imaged.
The present technology includes: an imaging unit including a plurality of pixels having different spectral characteristics; and an exposure control unit setting information associated with exposure control on the plurality of pixels depending on specification information for specifying a kind of a measurement target. Alternatively, the present technology includes: an imaging unit including a plurality of pixels having different spectral characteristics; and an exposure control unit setting information associated with exposure control on the plurality of pixels on the basis of a predicted output value of each of the plurality of pixels based on a spectral characteristic related to a measurement target. The present technology is applicable to an imaging apparatus which senses vegetation, for example.

公开(公告)号：US11561407B2

公开(公告)日：2023-01-24

申请号：US17034132

申请日：2020-09-28

Applicant: Cymer, LLC

Inventor： Eric Anders Mason

IPC: G02B26/00 ,  G02B27/14 ,  G02B27/12 ,  G02B5/04 ,  G02B27/42 ,  G01J3/06 ,  G01J3/14 ,  G01J3/18 ,  G03F7/20 ,  H01S3/08 ,  H01L21/027 ,  H01S3/00 ,  H01S3/23 ,  G01J3/12 ,  H01S3/225

Abstract: A spectral feature selection apparatus includes a dispersive optical element arranged to interact with a pulsed light beam; three or more refractive optical elements arranged in a path of the pulsed light beam between the dispersive optical element and a pulsed optical source; and one or more actuation systems, each actuation system associated with a refractive optical element and configured to rotate the associated refractive optical element to thereby adjust a spectral feature of the pulsed light beam. At least one of the actuation systems is a rapid actuation system that includes a rapid actuator configured to rotate its associated refractive optical element about a rotation axis. The rapid actuator includes a rotary stepper motor having a rotation shaft that rotates about a shaft axis that is parallel with the rotation axis of the associated refractive optical element.

公开(公告)号：US11506598B2

公开(公告)日：2022-11-22

申请号：US16699552

申请日：2019-11-29

Applicant: Wei Gao ,  Chang Yong ,  Silviu Velicu ,  Sivalingam Sivananthan

Inventor： Wei Gao ,  Chang Yong ,  Silviu Velicu ,  Sivalingam Sivananthan

IPC: G01J3/02 ,  G01N21/25 ,  G01J3/10 ,  G01J3/12 ,  G01N21/35

Abstract: A multiband IR adjunct (MIRA) sensor to spectroscopically determine the content and the concentration of chemical composition of a targeted object, includes a sensor housing, a first front optics in a first optical channel, a second front optics in the first optical channel, an acousto-optic tunable filter (AOTF), a photo detector (PD), a set of back optics in the first optical channel that focuses polarized narrow-band light beams received from the AOTF device onto the PD, the PD converting the polarized narrow-band light beams into an electrical signal, and a data acquisition unit signal-connected to the PD, the data acquisition unit collecting the electrical signals. Multiple optical channels can be provided within the housing to analyze UV/VIS/near infrared (NIR), short-wavelength infrared (SWIR), mid-wavelength infrared (MWIR), and LWIR wavelength ranges respectively.

公开(公告)号：US20220341783A1

公开(公告)日：2022-10-27

申请号：US17620408

申请日：2020-06-25

Applicant: Protea Ltd

Inventor： Chris Daw ,  Robin Hutchinson

IPC: G01J3/427 ,  G01J3/10 ,  G01J3/02 ,  G01J3/12 ,  G01N21/33 ,  G01N21/3504 ,  G01N33/00

Abstract: The invention relates to a photometer (30) for analysing the composition of a sample gas. The photometer comprises an infra-red (IR) source (20) configured to direct a first plurality of pulses (40) of IR radiation through the sample gas to an IR detector (26), at least two of the first plurality of pulses being of different wavelength. The photometer further comprises an ultraviolet (UV) source (32) configured to generate a second plurality of pulses (38) of UV radiation for conveyance to a UV detector (36), at least two of the second plurality of pulses being of different wavelength. A path selection arrangement (22, 42-50) is configured to selectively convey different ones of the second plurality of pulses (38) to one of the sample gas and the UV detector (36). The photometer further comprises processing circuitry coupled to the IR source (20), the UV source (32), the IR detector (26), the UV detector (36) and the path selection arrangement (22, 42-50). The processing circuitry is configured to (i) select the wavelength to be used for a given UV pulse of the second plurality of pulses (38), (ii) receive a plurality of detection signals from each of the IR detector (26) and the UV detector (36) and (iii) based on the detection signals, determine a concentration of at least one component of the sample gas. A method for analysing the composition of a sample gas is also disclosed.