公开(公告)号：US11796391B2

公开(公告)日：2023-10-24

申请号：US17634280

申请日：2020-10-06

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi Kasahara ,  Katsumi Shibayama ,  Kei Tabata ,  Masaki Hirose ,  Hiroki Oyama ,  Yumi Kuramoto

IPC: G01J3/02 ,  G01J3/26 ,  G01J3/45 ,  G02B26/00 ,  G02B5/28

CPC classification number: G01J3/26 ,  G01J3/0297 ,  G01J3/45 ,  G02B5/281 ,  G02B26/001

Abstract: A light detection device includes: a first support part disposed on a mounting surface of the wiring board; a Fabry-Perot interference filter disposed in a first support region of the first support part; and a temperature detector, wherein the temperature detector is disposed on the mounting surface such that at least a part of the temperature detector overlaps a part of the Fabry-Perot interference filter when seen in a first direction perpendicular to the mounting surface and such that at least a part of the temperature detector overlaps a part of the first support part when seen in a second direction in which the first support part and the light detector are aligned with each other, and wherein a first distance between the temperature detector and the first support part in the second direction is smaller than a first width of the first support region in the second direction.

公开(公告)号：US20230317867A1

公开(公告)日：2023-10-05

申请号：US18023435

申请日：2021-05-26

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI ,  Akio ITO ,  Masahiro HITAKA ,  Tadataka EDAMURA

IPC: H01L31/0352 ,  H01L23/482 ,  H01L31/02 ,  H01L31/0232 ,  H01L31/0304 ,  G01J3/10 ,  G01J3/45 ,  G01J3/457

CPC classification number: H01L31/035236 ,  H01L23/4821 ,  H01L31/02005 ,  H01L31/02325 ,  H01L31/035281 ,  H01L31/03046 ,  G01J3/10 ,  G01J3/45 ,  G01J3/457 ,  G01J2003/102

Abstract: A photodetection module includes a photodetector and a fixing member. The photodetector includes a semiconductor substrate, a mesa portion, a first contact layer, a second contact layer, and a first electrode formed in a planar shape on a major surface of the semiconductor substrate, and electrically connected to one of the first contact layer and the second contact layer. The fixing member includes an insulating substrate, and a first wiring formed in a planar shape on a major surface of the insulating substrate. A recessed portion is formed in the major surface of the insulating substrate, and at least a part of the mesa portion is disposed inside the recessed portion. The first electrode is electrically connected to the first wiring in a state where the first electrode is in surface contact with the first wiring.

公开(公告)号：US20230288254A1

公开(公告)日：2023-09-14

申请号：US18301871

申请日：2023-04-17

Applicant: II-VI Delaware, Inc.

Inventor： Michael John Laurence Cahill ,  Yang Li

IPC: G01J3/02 ,  H04B10/25 ,  G01J3/45

CPC classification number: G01J3/0297 ,  H04B10/25 ,  G01J3/0218 ,  G01J3/0286 ,  G01J3/45

Abstract: Described herein is a wavelength reference device comprising a housing defining an internal environment having a known temperature. A broadband optical source is disposed within the housing and configured to emit an optical signal along an optical path. The optical signal has optical power within a wavelength band of interest. An optical etalon is also disposed within the housing and positioned in the optical path to filter the optical signal to define a filtered optical signal that includes one or more reference spectral features having a known wavelength at the known temperature. The device also includes an optical output for outputting the filtered optical signal.

公开(公告)号：US11747276B2

公开(公告)日：2023-09-05

申请号：US17448067

申请日：2021-09-20

Applicant: Salvus, LLC

Inventor： Ron Levin ,  Clinton Beeland ,  James LeFiles ,  Joseph Egan ,  Timothy Zollers ,  Jacob Thompson

IPC: G01J3/45 ,  G01N21/45 ,  G01N33/53 ,  G01N21/77

CPC classification number: G01N21/45 ,  G01J3/45 ,  G01N21/77 ,  G01N33/5308 ,  G01N2021/7779

Abstract: A point of use analyte detection and quantification system for agricultural applications is provided. Related methods are also provided.

公开(公告)号：US11740452B2

公开(公告)日：2023-08-29

申请号：US16625702

申请日：2018-07-06

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuya Sugimoto ,  Tomofumi Suzuki ,  Kyosuke Kotani

IPC: G02B26/08 ,  B81B3/00 ,  G01J3/02 ,  G01J3/45

CPC classification number: G02B26/0841 ,  B81B3/0045 ,  G01J3/021 ,  G01J3/0202 ,  G01J3/45 ,  B81B2201/033 ,  B81B2201/042 ,  B81B2203/0136 ,  B81B2203/0154 ,  B81B2203/04

Abstract: An optical device includes: a base that includes a main surface; a movable unit that includes an optical function unit; and an elastic support unit that is connected between the base and the movable unit, and supports the movable unit so that the movable unit is movable along a first direction perpendicular to the main surface. The elastic support unit includes a lever, a first torsion support portion that extends along a second direction perpendicular to the first direction and is connected between the lever and the movable unit, and a second torsion support portion that extends along the second direction and is connected between the lever and the base. A torsional spring constant of the first torsion support portion is greater than a torsional spring constant of the second torsion support portion.

公开(公告)号：US11732694B2

公开(公告)日：2023-08-22

申请号：US17225747

申请日：2021-04-08

Applicant: TPI Composites, Inc.

Inventor： Richard Mignacca

IPC: F03D13/10 ,  F03D13/30 ,  G01J3/10 ,  G01N21/35 ,  B29D99/00 ,  G01J3/28 ,  B29L31/08 ,  F03D1/06 ,  G01J3/45

CPC classification number: F03D13/10 ,  B29D99/0025 ,  F03D13/30 ,  G01J3/108 ,  G01N21/35 ,  B29L2031/085 ,  F03D1/0675 ,  G01J3/45 ,  G01J2003/2879 ,  G01N2021/3595

Abstract: A method for fabrication of a composite component, e.g. wind turbine blade, comprises forming a composite structure within a mold, the composite structure including a resin dispersed throughout the fibers in the composite structure and applying a surface treatment, e.g. sanding, to at least one region of the composite structure. A Fourier Transform Infrared (FTIR) spectrometer is employed to irradiate the treated surface area with infrared light; and determining the amount of infrared light absorbed in the treated area of the composite structure to measure the chemical bond (distribution efficacy, chemical composition, and cure state) of the composite product. Calibration models for a variety of materials are made using a partial least squares 2-variable regression. These calibration files incorporate spectrum from samples of varying resin-hardener mix ratio, and at varying degree of cure. After library comparison confirms the material, the device automatically selects the correct calibration file, ensuring accurate results.

公开(公告)号：US11725989B2

公开(公告)日：2023-08-15

申请号：US16283888

申请日：2019-02-25

Applicant: Green Vision Systems Ltd.

Inventor： Danny S. Moshe

IPC: G01J3/45 ,  G01J3/02 ,  G01J3/453 ,  G02B26/06 ,  B81B7/02 ,  G01B9/02 ,  G02B7/182

CPC classification number: G01J3/45 ,  B81B7/02 ,  G01B9/02049 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/4535 ,  G02B26/06 ,  G02B7/182

Abstract: A microelectromechanical system (MEMS) (10), and a microelectromechanical (MEM) optical interferometer (18), for hyper-spectral imaging and analysis. System (10) includes matrix configured collimating micro lens (16), for receiving and collimating electromagnetic radiation (60) emitted by objects (12) in a scene or sample (14); microelectromechanical optical interferometer (18), for forming divided collimated object emission beam (72) having an optical path difference, and for generating an interference image exiting optical interferometer (18); matrix configured focusing micro lens (20); micro detector (22), for detecting and recording generated interference images; and micro central programming and signal processing unit (24). Applicable for on-line (e.g., real time or near-real time) or off-line hyper-spectral imaging and analyzing, on a miniaturized or ‘micro’ (sub-centimeter [1 cm (10 mm) or less], or sub-millimeter) scale, essentially any types or kinds of biological, physical, or/and chemical, (i.e., biophysicochemical) objects.

公开(公告)号：US20230208101A1

公开(公告)日：2023-06-29

申请号：US17923514

申请日：2021-05-07

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： Bart KUYKEN ,  Kasper VAN GASSE

IPC: H01S5/065 ,  H01S5/343 ,  H01S5/40 ,  H01S5/042 ,  H01S5/00 ,  H01S5/10 ,  G01J3/10 ,  G01J3/45

CPC classification number: H01S5/0657 ,  H01S5/3434 ,  H01S5/4006 ,  H01S5/042 ,  H01S5/0078 ,  H01S5/1025 ,  G01J3/10 ,  G01J3/45 ,  H01S5/3438 ,  G01J2003/102

Abstract: A photonic integrated circuit-based dual frequency comb source, an integrated system for dual comb spectroscopy and corresponding method are disclosed. The dual comb source includes, on a same substrate of the photonic integrated circuit, a first and second semiconductor integrated mode-locked laser, a master laser, and connection arrangement between the master laser and each of the first and second mode-locked laser. The master laser is configured for generating a lasing line for simultaneous optical injection-locking of the first and second mode-locked laser, the first and second mode-locked laser are configured for generating a first and second frequency comb respectively, and the connection arrangement is suitable for coherently transferring lasing light from the master laser to each mode-locked laser. The mode-locked lasers include a gain section and a saturable absorber section to provide mode-locking, and an extended optical cavity formed in the substrate.

公开(公告)号：US20190162999A1

公开(公告)日：2019-05-30

申请号：US15827204

申请日：2017-11-30

Applicant: Palo Alto Research Center Incorporated

Inventor： Alex Hegyi

IPC: G02F1/139 ,  G02F1/1335 ,  G02F1/13 ,  G02B27/28 ,  G02B5/30 ,  G01J4/04

CPC classification number: G02F1/1395 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/447 ,  G01J3/45 ,  G01J3/4531 ,  G01J4/04 ,  G01J2003/2866 ,  G02B5/3083 ,  G02B27/286 ,  G02F1/1326 ,  G02F1/13306 ,  G02F1/13318 ,  G02F1/133528 ,  G02F2201/58 ,  G02F2203/62

Abstract: A liquid-crystal variable retarder has first and second liquid-crystal cells with respective first and second thicknesses, the second thickness being less than the first thickness. A feedback sensor provides a feedback signal indicative of a retardance of the liquid-crystal variable retarder. A controller is coupled to the feedback sensor and the first and second liquid-crystal cells. The controller is operable to apply a first signal to the first liquid-crystal cell based on a target retardance trajectory and a feedforward control model. The controller applies a second signal to the second liquid-crystal cell based on the feedback signal and the target retardance trajectory.

公开(公告)号：US20190056270A1

公开(公告)日：2019-02-21

申请号：US15768548

申请日：2017-03-02

Applicant: CI SYSTEMS (ISRAEL) LTD.

Inventor： Dario CABIB

IPC: G01J3/45 ,  G01J3/427 ,  G01J3/433

CPC classification number: G01J3/45 ,  G01J3/0205 ,  G01J3/26 ,  G01J3/427 ,  G01J3/4338 ,  G01J3/4531 ,  G01J3/4532 ,  G01J2003/425 ,  G02B27/50

Abstract: An interference fringe pattern generator forms an interference fringe pattern from the light rays diffused from a region of an object positioned against a background. A planar array of detector pixels is arranged to capture an image of the interference fringe pattern. A storage medium records information indicative of intensity values of the image of the interference fringe pattern captured by a selected group of pixels of the planar array of detector pixels. The information is recorded as a function of the optical path difference values traversed by the diffused light rays through the interference fringe pattern generator for each of the pixels in the selected group of pixels. A processor determines the spectral characteristics of the object based on the information indicative of the intensity values recorded by the storage medium and the optical path difference values traversed by the diffused light rays.