公开(公告)号：US11662250B2

公开(公告)日：2023-05-30

申请号：US17112583

申请日：2020-12-04

Applicant: II-VI Delaware, Inc.

Inventor： Michael John Laurence Cahill ,  Yang Li

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

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

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：US20190154649A1

公开(公告)日：2019-05-23

申请号：US16256105

申请日：2019-01-24

Applicant: GECKO ALLIANCE GROUP INC.

Inventor： Benoit LAFLAMME ,  André VILLEMAIRE ,  Jean-François GRAVEL ,  Serge CARON

IPC: G01N33/18 ,  G01N21/31 ,  G01N21/27 ,  G01N21/33 ,  E04H4/12 ,  E04H4/00

CPC classification number: G01N33/182 ,  C02F2103/42 ,  C02F2209/11 ,  C02F2209/29 ,  E04H4/00 ,  E04H4/1281 ,  G01J3/0205 ,  G01J3/0291 ,  G01J3/0297 ,  G01J3/42 ,  G01J2003/2869 ,  G01J2003/421 ,  G01N21/274 ,  G01N21/3103 ,  G01N21/3151 ,  G01N21/33 ,  G01N21/85 ,  G01N2021/3133 ,  G01N2201/0231

Abstract: A method and an apparatus are presented for monitoring a concentration of a specific halogen in a body of water such as a spa or bathing unit for example. The apparatus comprises a housing in which is positioned an optical absorption analyzer for making first and second measurement of transmission of ultraviolet light from a light source emitting light at a specific wavelength. The second and first measurements are taken respectively before and after the ultraviolet light has travelled through a sample of water and are used to derive a concentration of the specific halogen. The derived concentration may then be communicated to a user using a display device and/or may be used to control operational components of a bathing unit for adjusting the concentration of halogen in the water. In some practical implementations, the apparatus may be embodied as a standalone device, which may be configured to float on the water of the bathing unit or, alternatively, may be configured for being installed in-line in a water circulation path of the bathing input by connecting the housing to circulation piping.

公开(公告)号：US20190128741A1

公开(公告)日：2019-05-02

申请号：US16088875

申请日：2017-03-15

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Koji TAKAHASHI ,  Haruyasu ITO ,  Koyo WATANABE

IPC: G01J11/00 ,  G01J3/447 ,  G02F1/137 ,  G01J3/02

CPC classification number: G01J11/00 ,  G01J3/0297 ,  G01J3/28 ,  G01J3/447 ,  G02F1/01 ,  G02F1/13 ,  G02F1/137

Abstract: In a waveform measurement method, first, initial pulsed light is spatially dispersed for respective wavelengths. Next, the initial pulsed light is input to a polarization dependent type SLM in a state where a polarization plane is inclined with respect to a modulation axis direction, and a phase spectrum of a first polarization component of the initial pulsed light along the modulation axis direction is modulated, to cause a time difference between first pulsed light Lp1 including the first polarization component and second pulsed light Lp2 including a second polarization component orthogonal to the first polarization component. After combining the wavelength components, an object is irradiated with the pulsed light Lp1 and the pulsed light Lp2, and light generated in the object is detected. The above detection operation is performed while changing the time difference, and a temporal waveform of the pulsed light Lp1 is obtained.

公开(公告)号：US20190017871A1

公开(公告)日：2019-01-17

申请号：US16031409

申请日：2018-07-10

Applicant: NANOLAMBDA KOREA

Inventor： Byung IL Choi

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/18

CPC classification number: G01J3/0254 ,  G01J3/0213 ,  G01J3/0218 ,  G01J3/0297 ,  G01J3/14 ,  G01J3/18 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/2823 ,  G01J2003/1208 ,  G01J2003/2806

Abstract: Spectrum sensors can be continuously calibrated in a manufacturing environment employing a continuously moving platform that carries the spectrum sensors in combination with spatially separated light spectra illuminating a region of the platform. A plurality of spectrum sensors, each including multiple sensor pixels, can be placed on the platform. The spatially separated light spectra can be illuminated over an area of the platform. The plurality of spectrum sensors can be moved with the platform through a region of the spatially separated light spectrum. Each sensor pixel for each of the plurality of spectrum sensors can be calibrated based on response of each spectral channel during passage through the spatially separated light spectra. The entire spectra from a light source can be employed simultaneously to calibrate multiple spectrum sensors in the manufacturing environment.

公开(公告)号：US20180313691A1

公开(公告)日：2018-11-01

申请号：US15921517

申请日：2018-03-14

Applicant: KLEIN MEDICAL LIMITED

Inventor： Raymond Andrew Simpkin ,  Donal Paul Krouse ,  Bryan James Smith

IPC: G01J3/10 ,  G01N21/3577 ,  G01N21/27 ,  G01N21/359 ,  G01J3/02 ,  G01J3/28

CPC classification number: G01J3/108 ,  G01J3/0297 ,  G01J3/28 ,  G01N21/274 ,  G01N21/3577 ,  G01N21/359 ,  G01N2201/0691

Abstract: A method and analyser for identifying or verifying or otherwise characterising a sample comprising: using or having an electromagnetic radiation source for emitting electromagnetic radiation in at least one beam at a sample, the electromagnetic radiation comprising at least two different wavelengths, using or having a sample detector that detects affected electromagnetic radiation resulting from the emitted electromagnetic radiation affected by the sample and provides output representing the detected affected radiation, and using or having a processor for determining sample coefficients from the output, and identifying or verifying or otherwise characterising the sample using the sample coefficients and training coefficients determined from training samples, wherein the coefficients reduce sensitivity to a sample retainer variation and/or are independent of concentration.

公开(公告)号：US20180313690A1

公开(公告)日：2018-11-01

申请号：US15937177

申请日：2018-03-27

Applicant: VIAVI Solutions Inc.

Inventor： Curtis R. HRUSKA

IPC: G01J3/02 ,  G01J3/42 ,  G01J3/10

CPC classification number: G01J3/0297 ,  G01J3/0205 ,  G01J3/027 ,  G01J3/10 ,  G01J3/42 ,  G01N21/274 ,  G01N2201/12707 ,  G01N2201/12715 ,  G01N2201/12723 ,  G01N2201/1273 ,  G01N2201/12738

Abstract: A device may determine a calibration value for a spectrometer using light from a first light source; deactivate the first light source after determining the calibration value; perform measurement with regard to a sample based on the calibration value, wherein the measurement of the sample is performed using light from a second light source; determine that the calibration value is to be updated; and update the calibration value using the light from the first light source.

公开(公告)号：US20180259394A1

公开(公告)日：2018-09-13

申请号：US15911197

申请日：2018-03-05

Applicant: Takayuki GOTOH ,  Takuroh SONE ,  Akihiro IWAMATSU ,  Hideyuki KlHARA ,  Takashi SOMA ,  Shuhei WATANABE

Inventor： Takayuki GOTOH ,  Takuroh SONE ,  Akihiro IWAMATSU ,  Hideyuki KlHARA ,  Takashi SOMA ,  Shuhei WATANABE

IPC: G01J3/50 ,  G01J3/06 ,  G01J3/02

CPC classification number: G01J3/50 ,  G01J3/021 ,  G01J3/0297 ,  G01J3/06 ,  G01J3/28 ,  G01J3/465 ,  G01J3/504 ,  G01J2003/467

Abstract: A color measurement apparatus includes at least one illuminator, an imager, and circuitry. The circuitry is configured to normalize each pixel included in an imaging region of one of the spectral reflectance images of the measurement target irradiated with light at a specific illumination angle of the plurality of illumination angles, with one of the spectral reflectance images of the reference object irradiated with light at the specific illumination angle, for each of the plurality of illumination angles so as to generate normalized spectral reflectance images of the measurement target. The circuitry further calculates a numerical value of at least one color for each pixel of the normalized spectral reflectance images of the measurement target, for respective ones of the plurality of illumination angles, to measure color of the surface of the measurement target.

公开(公告)号：US10060793B2

公开(公告)日：2018-08-28

申请号：US15000488

申请日：2016-01-19

Applicant: Xerox Corporation

Inventor： David C. Craig ,  Robert P. Herloski ,  David A. Mantell ,  Douglas E. Proctor ,  Jonathan B. Hunter ,  Stuart Schweid

IPC: G01J3/02 ,  G01J3/427 ,  G01J3/10 ,  G01J3/28

CPC classification number: G01J3/0297 ,  G01J3/027 ,  G01J3/10 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/427 ,  G01J3/513 ,  G01J3/524 ,  G01J2003/2806

Abstract: A method of spatially and spectrally calibrating a spectrophotometer including: a) emitting a white light illumination output from a full width illumination source; b) illuminating a test patch with the white light illumination output; c) reflecting a portion of the white light illumination output from the test patch to form a white light reflected illumination output; d) receiving the white light reflected illumination output at first, second and third rows of photosensitive elements to form a first calibration data set; e) emitting a cyan light illumination output from the full width illumination source; f) illuminating the test patch with the cyan light illumination output; g) reflecting a portion of the cyan light illumination output from the test patch to form a cyan light reflected illumination output; and, h) receiving the cyan light reflected illumination output at the second and third rows of photosensitive elements to form a second calibration data set.

公开(公告)号：US20180209847A1

公开(公告)日：2018-07-26

申请号：US15746109

申请日：2016-07-21

Applicant: Instrument Systems Optische Messtechnik GmbH

Inventor： Felix Frank ,  Markus Estermann ,  Christoph Kappel ,  Florian Schewe ,  Reto Haring ,  Amy Winkler ,  Corin Michael Ricardo Greaves

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/18 ,  G02B19/00 ,  G02B27/10 ,  G02B27/42

CPC classification number: G01J3/10 ,  G01J3/0218 ,  G01J3/0297 ,  G01J3/18 ,  G01J2003/104 ,  G01J2003/1286 ,  G02B19/0066 ,  G02B27/1086 ,  G02B27/425

Abstract: The invention relates to an apparatus for generating light, comprising a plurality of light sources (1), —a control device (2), which drives the light sources (1), and a superimposition optical unit, which superimposes the light emitted by the light sources (1) in an exit opening (3). It is an object of the invention to provide an apparatus which is improved compared with the prior art. For this purpose, the invention proposes that the superimposition optical unit comprises a first concave mirror (4), in the focal plane of which the light sources (1) are situated, an optical grating (5), onto which the first concave mirror (4) reflects the light (6) emitted by the light sources (1), and —a second concave mirror (7), which reflects the light (8) diffracted at the optical grating (5) onto the exit opening (3) situated at the focus of the second concave mirror (7).

公开(公告)号：US20180188109A1

公开(公告)日：2018-07-05

申请号：US15907359

申请日：2018-02-28

Applicant: arable Labs, Inc.

Inventor： Lawrence Adam Wolf ,  Benjamin Joseph Siegfried

IPC: G01J3/02 ,  G01J3/457

CPC classification number: G01J3/0297 ,  G01J3/0205 ,  G01J3/0264 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/0294 ,  G01J3/457

Abstract: A radiation measuring device for measuring electromagnetic radiation originating from an external source. The radiation measuring device includes, a spectrometer, a pyranometer, a pyrgeometer, a diffuser, and a control unit. The spectrometer and a pyranometer are positioned in a sensor zone of a housing of the radiation measuring device. The spectrometer measures visible shortwave radiation and near-infrared shortwave radiation received at the sensor zone. The pyranometer measures shortwave radiation received at the sensor zone. The pyrgeometer is positioned in another sensor zone of the housing and measures longwave radiation received at the other sensor zone. The control unit receives radiation measurements from the spectrometer, pyranometer, and pyrgeometer. A corrected amount of radiation received at the sensor zones of the radiation measuring device is determined from the received radiation measurements. Other embodiments are described and claimed.