公开(公告)号：US11333556B2

公开(公告)日：2022-05-17

申请号：US15603126

申请日：2017-05-23

Applicant: Simmonds Precision Products, Inc.

Inventor： Tyler Arsenault ,  Peter J. Carini ,  David H. Crowne

IPC: G01J3/51 ,  G01J9/02 ,  G01D5/353 ,  G01J9/00 ,  G01J11/00

Abstract: Apparatus and associated methods relate to determining the wavelength of a narrow-band light beam. The narrow-band light beam is passed through an optical filter. The optical filter has complementary and monotonically-varying transmission and reflection coefficients within a predetermined band of wavelengths. The predetermined band of wavelengths includes the wavelength of the narrow-band light beam. A first photodetector detects amplitude of a first portion of the narrow-band light beam transmitted by the optical filter. A second photodetector detects amplitude of a second portion of the narrow-band light beam reflected by the optical filter. The wavelength of the narrow-band light beam is determined, based on a ratio of the determined amplitudes of the first and second portions of the narrow-band light beam transmitted and reflected, respectively.

公开(公告)号：US11226232B2

公开(公告)日：2022-01-18

申请号：US16651060

申请日：2018-09-26

Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

Inventor： Dragos Constantin ,  Simon De Visscher

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/18 ,  G01J3/26 ,  G01J3/28 ,  G01J3/51 ,  G01J3/12

Abstract: A Multichromatic Calibration (MC) method of at least a spectral sensor which is one of a list comprising at least a spectrometer, a multispectral sensor, a hyperspectral sensor, a spectral camera, a color camera. The method comprises a. generating a plurality of different multichromatic spectra, wherein i. a spectrum from the plurality of different multichromatic spectra contains light intensity measurable by the at least one spectral sensor and by a reference spectral device, and ii. a spectrum from the plurality of different multichromatic spectra contains light centered around at least two different wavelengths and is configured to be integrated during an exposure time of a single measurement from any of the at least one spectral sensor or the reference spectral device; b. measuring each multichromatic spectrum of the plurality of different multichromatic spectra with the reference spectral device and the at least one spectral sensor; and from all data of the measured multichromatic spectra, compute a transfer function which relates a response of the at least one spectral sensor to a corresponding response of the reference spectral device, without measuring the spectral response of the at least one spectral sensor.

公开(公告)号：US20210190591A1

公开(公告)日：2021-06-24

申请号：US16726409

申请日：2019-12-24

Applicant: Palo Alto Research Center Incorporated

Inventor： Robert Anthony Street

IPC: G01J3/51 ,  H01L27/146

Abstract: A system of optical sensors determines whether an object is placed on the system by passing light through the sensor layer, detecting light reflected from the object above the sensor layer, and identifying the object based on whether a color detected in the light corresponds to a color of the side of the object that is positioned on the system over the sensor layer. When the system includes multiple optical sensor units, the system may determine where the object has been placed by determining which of the sensor units detect light reflected from the side of the object.

公开(公告)号：US10962477B2

公开(公告)日：2021-03-30

申请号：US15831837

申请日：2017-12-05

Applicant: OPTOLANE Technologies Inc.

Inventor： Jun Ho Won ,  Do Young Lee ,  Kyung Hak Choi ,  An Shik Choi

IPC: G01N21/64 ,  G01N21/21 ,  B01L3/00 ,  C12Q1/686 ,  G01J3/51 ,  G01J3/02 ,  G01J1/02 ,  G01J1/04 ,  G01J3/44 ,  G01J3/443 ,  G02B5/22 ,  G01J3/46

Abstract: The wide-angle emission filter includes a base matrix, a photoresist, and a colorant. The base matrix has a flat shape and including a transparent material. The base matrix does not generate fluorescent light or phosphorescent light by an excitation light. The photoresist is disposed in the base matrix. The photoresist is fixed in a solid state through at least one method selected from the group consisting of thermal hardening, photo hardening, and drying. The colorant is disposed in the base matrix and includes light having a predetermined wavelength range. The wide-angle emission filter filters the excitation light regardless of an incident angle of the excitation light.

公开(公告)号：US20210072084A1

公开(公告)日：2021-03-11

申请号：US16953910

申请日：2020-11-20

Applicant: National University Corporation Hokkaido University

Inventor： Yukihiro TAKAHASHI ,  Junichi KURIHARA ,  Tetsuro ISHIDA

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

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：US10944953B2

公开(公告)日：2021-03-09

申请号：US16427101

申请日：2019-05-30

Applicant: ALIGN TECHNOLOGY, INC.

Inventor： Noam Babayoff

IPC: H04N13/15 ,  G01B11/25 ,  H04N13/207 ,  H04N13/257 ,  H04N13/271 ,  H04N13/296 ,  A61B1/00 ,  A61B1/06 ,  A61B1/24 ,  A61B1/247 ,  A61B5/00 ,  A61B5/107 ,  G01B11/24 ,  G01J3/02 ,  G01J3/10 ,  G01J3/50 ,  G06T7/12 ,  G06T7/90 ,  A61C9/00 ,  G06T7/00 ,  G01N21/25 ,  H01L27/148 ,  A61C19/04 ,  G01J3/46 ,  G01J3/51

Abstract: A device for determining the surface topology and associated color of a structure, such as a teeth segment, includes a scanner for providing depth data for points along a two-dimensional array substantially orthogonal to the depth direction, and an image acquisition means for providing color data for each of the points of the array, while the spatial disposition of the device with respect to the structure is maintained substantially unchanged. A processor combines the color data and depth data for each point in the array, thereby providing a three-dimensional color virtual model of the surface of the structure. A corresponding method for determining the surface topology and associate color of a structure is also provided.

公开(公告)号：US10798316B2

公开(公告)日：2020-10-06

申请号：US15478408

申请日：2017-04-04

Applicant: Hand Held Products, Inc.

Inventor： Alain Gillet ,  Jean-Luc Basso

IPC: G02B7/36 ,  H04N5/33 ,  G02B7/09 ,  H04N9/04 ,  G06T7/11 ,  G06T7/90 ,  G01J3/02 ,  G01J3/14 ,  G01J3/28 ,  G01J3/51 ,  H04N5/217 ,  H04N5/232

Abstract: Systems and methods for imaging a target object are provided. In one example, a multispectral imager includes an objective lens configured to disperse light from a target object with a high degree of longitudinal chromatic aberrations along an optical axis of the objective lens. The multispectral imager also includes a sensor configured to capture a whole image of the target object at each of a plurality of wavelengths when at least one of the objective lens and the sensor is moved along the optical axis. Furthermore, the multispectral imager includes a processor configured to analyze intensities of different additive primary colors of each pixel of each whole image to determine which pixels have a correct wavelength.

公开(公告)号：US20200264046A1

公开(公告)日：2020-08-20

申请号：US16651060

申请日：2018-09-26

Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

Inventor： Dragos CONSTANTIN ,  Simon DE VISSCHER

IPC: G01J3/10 ,  G01J3/28 ,  G01J3/02 ,  G01J3/26 ,  G01J3/51 ,  G01J3/18

Abstract: A Multichromatic Calibration (MC) method of at least a spectral sensor which is one of a list comprising at least a spectrometer, a multispectral sensor, a hyperspectral sensor, a spectral camera, a color camera. The method comprises a. generating a plurality of different multichromatic spectra, wherein i. a spectrum from the plurality of different multichromatic spectra contains light intensity measurable by the at least one spectral sensor and by a reference spectral device, and ii. a spectrum from the plurality of different multichromatic spectra contains light centered around at least two different wavelengths and is configured to be integrated during an exposure time of a single measurement from any of the at least one spectral sensor or the reference spectral device; b. measuring each multichromatic spectrum of the plurality of different multichromatic spectra with the reference spectral device and the at least one spectral sensor; and from all data of the measured multichromatic spectra, compute a transfer function which relates a response of the at least one spectral sensor to a corresponding response of the reference spectral device, without measuring the spectral response of the at least one spectral sensor.

公开(公告)号：US20200258927A1

公开(公告)日：2020-08-13

申请号：US15929371

申请日：2020-04-29

Applicant: VIAVI Solutions Inc.

Inventor： Georg J. OCKENFUSS

IPC: H01L27/146 ,  H01L51/52 ,  H01L33/46 ,  H01L27/32 ,  H01L33/60 ,  G02B5/28 ,  G01J3/36 ,  G01J3/28 ,  G01J3/26 ,  G01J3/02 ,  G01J3/51 ,  H01L31/0216

Abstract: A device may include a multispectral filter array disposed on the substrate. The multi spectral filter array may include a first metal mirror disposed on the substrate. The multi spectral filter may include a spacer disposed on the first metal mirror. The spacer may include a set of layers. The spacer may include a second metal mirror disposed on the spacer. The second metal mirror may be aligned with two or more sensor elements of a set of sensor elements.

公开(公告)号：US10733750B2

公开(公告)日：2020-08-04

申请号：US16172462

申请日：2018-10-26

Applicant: Otsuka Electronics Co., Ltd.

Inventor： Yoshihiko Nishida ,  Yoshi Enami ,  Nobuyuki Inoue

IPC: G06T7/60 ,  G01J3/02 ,  G01J3/51 ,  G01J3/28 ,  H04N5/232 ,  G02B5/20 ,  G01J3/12 ,  G02B26/02 ,  G06T15/00 ,  G06T7/55

Abstract: An optical characteristics measuring method for measuring optical characteristics of a subject, the optical characteristics measuring method including: a step of acquiring one or more captured images including the subject, using an image capturing apparatus that is located at a predetermined distance from the subject, and is configured to be displaceable relative to the subject, while maintaining the predetermined distance; and a step of creating, based on the one or more captured images thus acquired, a virtual image including the subject and acquired from one or more analysis points each located at a position other than a position on a plane that includes the trajectory of the image capturing apparatus.