公开(公告)号：US2330694A

公开(公告)日：1943-09-28

申请号：US39271041

申请日：1941-05-09

Applicant: SPENCER LENS CO

Inventor： ESTEY ROGER S ,  HARPER KENNARD W

IPC: G01J3/14

CPC classification number: G01J3/14

公开(公告)号：US2305776A

公开(公告)日：1942-12-22

申请号：US36417040

申请日：1940-11-04

Applicant: GERHARD HANSEN

Inventor： GERHARD HANSEN

IPC: G01J3/14

CPC classification number: G01J3/14

公开(公告)号：US1840476A

公开(公告)日：1932-01-12

申请号：US34864429

申请日：1929-03-20

Applicant: HILGER LTD ADAM

Inventor： FRANK TWYMAN

IPC: G01J3/14

CPC classification number: G01J3/14

公开(公告)号：US20250102362A1

公开(公告)日：2025-03-27

申请号：US18894090

申请日：2024-09-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Nobuhito HAYASHI ,  Kohei YAMADA

IPC: G01J3/453 ,  G01J3/14

Abstract: An interferometer including an analysis optical system including a retroreflector configured to reflect analysis light and a first light receiver configured to receive the analysis light and output a first light reception signal, the analysis optical system irradiating a sample with the analysis light and causing the analysis light to interfere; a length measuring optical system including a laser light source configured to output laser light, an optical modulator configured to modulate a frequency of the laser light by using a vibrator and add a modulation component to the laser light, and a second light receiver configured to receive the laser light containing the modulation component and a length measurement component generated when the retroreflector is irradiated with the laser light and output a second light reception signal, the length measuring optical system causing the laser light to interfere; and a driver configured to change a position of the retroreflector.

公开(公告)号：US20250009233A1

公开(公告)日：2025-01-09

申请号：US18891970

申请日：2024-09-20

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. ISLAM

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

Abstract: A remote sensing system comprises a time-of-flight sensor including an array of near-infrared laser diodes comprising Bragg reflectors and pulsed with durations approximately 0.5 to 2 nanoseconds whose light is directed to an object. The detection system comprises a photodiode array coupled to a processor, and the time-of-flight measurement is calculated from the temporal distribution of photons reflected from the object. The sensor is coupled to an optical system comprising an active illuminator with a plurality of light emitting diodes and a camera system configured to be synchronized to the illuminator. Furthermore, the sensor is coupled to a light sensing system comprising a multi-wavelength filter to separate incoming ambient light into a series of wavelength bands, and a detector array configured to capture some of the wavelength bands to generate a color output. The processor may be configured to control the active illuminator based on the received color output.

公开(公告)号：US12174070B2

公开(公告)日：2024-12-24

申请号：US17819892

申请日：2022-08-15

Applicant: University of Hawaii

Inventor： Paul Lucey

IPC: G01J3/26 ,  G01J3/14 ,  G01J3/453

Abstract: A spatial Fourier transform spectrometer is disclosed. The Fourier transform spectrometer includes a Fabry-Perot interferometer with first and second optical surfaces. The gap between the first and second optical surfaces spatially varies in a direction that is orthogonal to the optical axis of the Fourier transform spectrometer. The Fabry-Perot interferometer creates an interference pattern from input light. An image of the interference pattern is captured by a detector, which is communicatively coupled to a processor. The processor is configured to process the interference pattern image to determine information about the spectral content of the input light.

公开(公告)号：US12174066B2

公开(公告)日：2024-12-24

申请号：US18486355

申请日：2023-10-13

Applicant: VIAVI SOLUTIONS INC.

Inventor： Driss Touahri ,  Christopher Russell Wagner ,  Joshua Benjamin Julius Philipson

IPC: G01J3/02 ,  G01J3/14 ,  G01J3/18 ,  G01J3/447

Abstract: A system for a high resolution optical spectrum analyzer (OSA) using various optical configurations to reduce polarization dependent loss (PDL) is disclosed. The system may include a birefringent element to receive an input optical beam. The birefringent element may then split the optical beam into at least two exit beams. The system may also include an optical configuration comprising at least one optical element. The optical configuration may receive the at least two exit beams from the birefringent element and transform at least one of the two exit beams using the at least one optical element to provide two parallel beams with parallel polarizations. The optical configuration may then output the two parallel beams with parallel polarizations to a downstream optical element, such as a diffraction grating, or other optical element.

公开(公告)号：US12117340B2

公开(公告)日：2024-10-15

申请号：US17598770

申请日：2020-03-25

Applicant: Ushio Denki Kabushiki Kaisha

Inventor： Go Yamada ,  Takuma Yokoyama

IPC: G01J3/18 ,  G01J3/10 ,  G01J3/14 ,  G02F1/365

CPC classification number: G01J3/10 ,  G01J3/14 ,  G01J3/18 ,  G02F1/365 ,  G02F2201/305

Abstract: To provide a light source apparatus for light measurement in which time wavelength uniqueness is not lost even in a case of high output, and to enable spectroscopic measurement with high accuracy and at high speed. Broadband pulsed light having a continuous spectrum over a wavelength width of at least 50 nm in a range of 900 to 1300 nm is emitted from a pulsed light source, and divided for each wavelength by a divider, and light having each wavelength is transmitted by each of stretch fibers and emitted from a coupler. The stretch fibers have different lengths such that an elapsed time and the wavelength in one pulse correspond to each other on a one-to-one basis at an emission end.

公开(公告)号：US20240268680A1

公开(公告)日：2024-08-15

申请号：US18646390

申请日：2024-04-25

Applicant: Omni Medsci, Inc.

Inventor： Mohammed N. ISLAM

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

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61C19/04 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00 ,  A61B5/0024 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/146 ,  A61B2576/02 ,  A61C1/0046 ,  G01J2003/104 ,  G01J2003/1208 ,  G01J3/1838 ,  G01J2003/2826 ,  G01M3/38 ,  G01N2021/3513 ,  G01N2021/3595 ,  G01N2021/399 ,  G01N21/85 ,  G01N21/9508 ,  G01N2201/061 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/129 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/302 ,  Y02A90/10

Abstract: A remote sensing system for time-of-flight measurements may comprise an array of laser diodes with Bragg reflectors operating in the near-infrared wavelength range synchronized to a detection system comprising lenses, spectral filters and a photodiode array coupled to a processor. The time-of-flight depth information may be combined with various camera imaging systems. The camera system may comprise a lens system, prism and a sensor. In another embodiment, the data from two cameras may be combined with the time-of-flight depth information. Yet another embodiment comprises an imaging system with another array of laser diodes followed by a beam splitter and a detection system. The remote sensing system may be coupled to a smart phone, tablet or wearable device, and the combined data may provide three-dimensional information about at least some part of an object. Also, artificial intelligence may be used in the processing to make decisions regarding the depth and images.

公开(公告)号：US20240225454A9

公开(公告)日：2024-07-11

申请号：US18386877

申请日：2023-11-03

Applicant: Omni Medsci, Inc.

Inventor： Mohammed N. ISLAM

IPC: A61B5/00 ,  A61B5/145 ,  A61B5/1455 ,  A61C19/04 ,  G01J3/02 ,  G01J3/10 ,  G01J3/14 ,  G01J3/28 ,  G01J3/42 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01N33/15 ,  G01N33/44 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61C19/04 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00 ,  G01N2201/129 ,  H01S3/302

Abstract: A measurement system may comprise an actively illuminated camera system, in some embodiments coupled to a time-of-flight sensor or an array of laser diodes beam split into a plurality of spatially separated lights. The camera system may capture two or three dimensional images, and the light source may comprise semiconductor diodes, such as light emitting diodes. The system includes a processor coupled to non-transitory computer readable medium and configured to use artificial intelligence to make one or more decisions. The processing may also involve artificial intelligence or machine learning techniques to analyze anomalous occurrences, or generative artificial intelligence to interface with a user or improve the performance of camera-based systems. Algorithms may also be used to improve the performance of generative artificial intelligence processing. The camera output may be fused with data from other sensors, and the camera may also capture information about the pose or gestures of a user.