公开(公告)号：US12130136B2

公开(公告)日：2024-10-29

申请号：US17707479

申请日：2022-03-29

Applicant: Thorlabs, Inc.

Inventor： Oliver Heckl ,  Jakob Fellinger

IPC: G01S17/34 ,  G01B9/02001 ,  G01J3/433 ,  G01J3/45 ,  G01J3/457 ,  G01S7/48 ,  G01S7/497 ,  G01S17/894 ,  G01J3/28 ,  G01J3/42

CPC classification number: G01B9/02008 ,  G01J3/433 ,  G01J3/45 ,  G01J3/457 ,  G01S7/4808 ,  G01S7/497 ,  G01S17/34 ,  G01S17/894 ,  G01J2003/2879 ,  G01J2003/423 ,  G01J2003/4332

Abstract: A device that uses two intensity modulated frequency combs to measure distances with high precision and high data acquisition rate without any moving parts and without length ambiguity that is inherent conventional ranging based on two frequency combs. A modulation signal having a repetition rate identical to the repetition rate difference between the two combs is used to do a direct time-of-flight length measurement, hence avoiding the given length ambiguity while harvesting the increased precision of the dual-comb approach.

公开(公告)号：US12061116B2

公开(公告)日：2024-08-13

申请号：US17876250

申请日：2022-07-28

Applicant: Si-Ware Systems

Inventor： Yasser M. Sabry ,  Mohamed H. Al Haron ,  Bassem Mortada ,  Ahmed Othman ,  Diaa Khalil ,  Bassam Saadany ,  Ahmed Shebl ,  Botros George Iskander Shenouda

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/28 ,  G01J3/45 ,  G01J3/453 ,  G01N33/483

CPC classification number: G01J3/0256 ,  G01J3/0208 ,  G01J3/0216 ,  G01J3/0286 ,  G01J3/108 ,  G01J3/45 ,  G01J3/4532 ,  G01N33/4833 ,  G01J2003/283 ,  G01J2003/2873 ,  G01J2003/4534

Abstract: Aspects relate to a spectral analyzer that can be used for biological sample detection. The spectral analyzer includes an optical window configured to receive a sample and a spectral sensor including a chassis having various component assembled thereon. Examples of components may include a light source, a light modulator, illumination and collection optical elements, a detector, and a processor. The spectral analyzer is configured to obtain spectral data representative of a spectrum of the sample using, for example, an artificial intelligence (AI) engine. The spectral analyzer further includes a thermal separator positioned between the light modulator and the light source.

公开(公告)号：US12016628B2

公开(公告)日：2024-06-25

申请号：US16497071

申请日：2018-03-27

Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xincheng Yao ,  Tae Yun Son

IPC: A61B3/10 ,  A61B3/00 ,  A61B3/12 ,  G01J3/02 ,  G01J3/45 ,  G06T7/10

CPC classification number: A61B3/102 ,  A61B3/0008 ,  A61B3/0025 ,  A61B3/1241 ,  G01J3/0208 ,  G01J3/45 ,  G06T7/10 ,  G01J2003/451 ,  G06T2207/10101 ,  G06T2207/30041 ,  G06T2211/404 ,  G06T2219/021

Abstract: A multi-modal functional OCT imaging methodology and system are provided that enable concurrent intrinsic optical signal (IOS) imaging of stimulus-evoked neural activity and hemodynamic responses at capillary resolution. An OCT angiography (OCTA)-guided IOS analysis is used to separate neural-IOS and hemodynamic-IOS changes in the same retinal image sequence. The OCTA-guided IOS data processing used for this purpose differentiates two functional images, namely, a neural-IOS map and a hemodynamic-IOS map, from the same image dataset.

公开(公告)号：US11860037B2

公开(公告)日：2024-01-02

申请号：US17269296

申请日：2018-09-03

Applicant: SHIMADZU CORPORATION

Inventor： Takashi Muramatsu

IPC: G01J3/45 ,  G01B9/02 ,  G01B11/14

CPC classification number: G01J3/45 ,  G01B9/02044 ,  G01B11/14

Abstract: An interferometer movable mirror position measurement apparatus for determining a position of a movable mirror of an interferometer. The interferometer movable mirror position measurement apparatus including: a laser light source; a phase separation optical system configured to make first light and second light separately detected; a signal conversion unit configured to detect the first light and the second light in synchronization with a position of a movable mirror to generate a first sinusoidal wave signal and a second sinusoidal wave signal, respectively; a phase calculation unit configured to perform normalization and phase difference correction on each of the first sinusoidal wave signal and the second sinusoidal wave signal, and then calculate a phase of the first sinusoidal wave signal or the second sinusoidal wave signal at each time point; and a movable mirror position determination unit configured to determine a position of the movable mirror at a predetermined time point.

公开(公告)号：US11828650B2

公开(公告)日：2023-11-28

申请号：US17159900

申请日：2021-01-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jineun Kim ,  Younggeun Roh ,  Yeonsang Park ,  Hyochul Kim ,  Moonil Jung

IPC: G01J3/18 ,  G01J3/45 ,  G02B5/28 ,  G01J3/26 ,  G02B5/20 ,  G01J3/28 ,  G01J3/02 ,  H01L27/146 ,  H01L31/0216 ,  G01J3/12 ,  G02F1/21

CPC classification number: G01J3/1895 ,  G01J3/021 ,  G01J3/0205 ,  G01J3/0256 ,  G01J3/0297 ,  G01J3/26 ,  G01J3/2823 ,  G01J3/45 ,  G02B5/201 ,  G02B5/28 ,  G02B5/288 ,  G01J2003/1226 ,  G01J2003/2826 ,  G02F1/213 ,  H01L27/14621 ,  H01L31/02165

Abstract: A light filter and a spectrometer including the light filter are disclosed. The light filter includes a plurality of filter units having different resonance wavelengths, wherein each of the plurality of filter units includes a cavity layer configured to output light of constructive interference, a Bragg reflection layer provided on a first surface of the cavity layer, and a pattern reflection layer provided on a second surface of the cavity layer opposite to the first surface and configured to cause guided mode resonance of light incident on the pattern reflection layer, the pattern reflection layer including a plurality of reflection structures that are periodically arranged.

公开(公告)号：US11815399B2

公开(公告)日：2023-11-14

申请号：US17653645

申请日：2022-03-05

Applicant: Topcon Corporation

Inventor： Akira Takada

IPC: G01J3/45 ,  G01J3/02

CPC classification number: G01J3/45 ,  G01J3/021 ,  G01J3/0208

Abstract: A wavelength-swept light source is configured to generate light to be measured that is wavelength-swept coherent light with a wavelength periodically changed. The light to be measured is separated into a measurement section and a reference section that have different optical path lengths, and is then coupled in an interference section to generate interfering light. An analyzer performs a Fourier transform of interference signals of the interfering light, and acquires an actual measured noise floor value for each of the optical path length differences based on a point spread function. An estimated coherence time is determined so that an actual measured amplitude value of the noise floor value and a calculated amplitude value coincide with each other. Linewidth of the light emitted from the coherent light source is measured based on the estimated coherence time.

公开(公告)号：US11774867B2

公开(公告)日：2023-10-03

申请号：US17433494

申请日：2020-01-27

Applicant: ASML Netherlands B.V.

Inventor： Herman Philip Godfried ,  Wilhelmus Patrick Elisabeth Maria Op 'T Root

IPC: G03F7/20 ,  G01J3/45 ,  G03F7/00

CPC classification number: G03F7/7085 ,  G01J3/45 ,  G03F7/70558 ,  G03F7/70575 ,  G03F7/7085 ,  G01J3/45

Abstract: A radiation measurement system (200) comprising an optical apparatus (205) configured to receive a radiation beam (210) and change an intensity distribution of the radiation beam to output a conditioned radiation beam (215), and a spectrometer (220) operable to receive the conditioned radiation beam and determine spectral content of the conditioned radiation beam. The radiation measurement system may form part of a lithographic apparatus.

公开(公告)号：US20230307562A1

公开(公告)日：2023-09-28

申请号：US18023418

申请日：2021-05-26

Applicant: HAMAMATSU PHOTONICS K.K.

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

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

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

Abstract: A photodetector includes: a semiconductor substrate; a mesa portion formed on a major surface of the semiconductor substrate to extend along an optical waveguide direction; a first contact layer; a second contact layer; a first electrode; and an air bridge wiring electrically connected to the first contact layer and the first electrode. When viewed in a direction perpendicular to the major surface of the semiconductor substrate, a length of the mesa portion in the optical waveguide direction is longer than a length of the mesa portion in a direction perpendicular to the optical waveguide direction. The air bridge wiring is led out from the first contact layer to one side in the direction perpendicular to the optical waveguide direction, and is bridged between the first contact layer and the first electrode.

公开(公告)号：US11740177B2

公开(公告)日：2023-08-29

申请号：US17448079

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 aquatic applications is provided. Related methods are also provided.

公开(公告)号：US20230221106A1

公开(公告)日：2023-07-13

申请号：US18121164

申请日：2023-03-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tomofumi Suzuki ,  Kyosuke Kotani ,  Tatsuya Gugimoto ,  Yutaka Kuramoto ,  Katsumi Shibayama ,  Noburo Hosokawa

IPC: G01B9/02 ,  G01J3/45 ,  G01J3/02 ,  B81B3/00 ,  G02B27/14 ,  G02B26/08 ,  G02B7/182 ,  G01J3/10 ,  G01J3/14 ,  G01J3/453

CPC classification number: G01B9/02051 ,  G01J3/45 ,  G01J3/0202 ,  G01J3/021 ,  B81B3/00 ,  G02B27/144 ,  B81B3/0021 ,  B81B3/007 ,  G02B26/0816 ,  G02B7/182 ,  G01J3/108 ,  G01J3/0237 ,  G01B9/02049 ,  G02B26/0833 ,  G01J3/14 ,  G02B26/0841 ,  G01B2290/35 ,  G01J3/4532 ,  G01B2290/25 ,  B81B2203/0154 ,  G01J3/4535 ,  G01J2003/104 ,  B81B2201/042

Abstract: In an optical device, a base and a movable unit are constituted by a semiconductor substrate including a first semiconductor layer, an insulating layer, and a second semiconductor layer in this order from one side in a predetermined direction. The base is constituted by the first semiconductor layer, the insulating layer, and the second semiconductor layer. The movable unit includes an arrangement portion that is constituted by the second semiconductor layer. The optical function unit is disposed on a surface of the arrangement portion on the one side. The first semiconductor layer that constitutes the base is thicker than the second semiconductor layer that constitutes the base. A surface of the base on the one side is located more to the one side than the optical function unit.