公开(公告)号：US3784307A

公开(公告)日：1974-01-08

申请号：US3784307D

申请日：1970-11-16

Applicant: PHILIPS CORP

Inventor： JACKSON J ,  DONAT BRADSHAW R

IPC: G01J3/427 ,  G01J3/08 ,  G01J3/447 ,  G01N21/03 ,  G01N21/21 ,  G01N21/31 ,  G01N21/22

CPC classification number: G01N21/314 ,  G01N21/03 ,  G01N21/21

Abstract: A method and apparatus for monitoring the presence of water vapor in helium features providing two narrow infrared frequency band within and outside a water vapor absorption band, alternately projecting the two bands of infrared radiation into the helium by using the polarization properties of the infrared radiation, and subsequently detecting the two infrared bands and comparing their amplitudes. Besides providing an accurate and reliable measurement, the invention is compact and requires no moving mechanical parts.

Abstract translation: 一种用于监测氦特征中水蒸汽存在的方法和装置，其在水蒸汽吸收带内和外部提供两个窄红外频带，通过使用红外辐射的偏振特性将两个红外辐射带交替地投射到氦气中， 并随后检测两个红外波段并比较其幅度。 除了提供准确可靠的测量之外，本发明是紧凑的，不需要移动的机械部件。

公开(公告)号：US3770354A

公开(公告)日：1973-11-06

申请号：US3770354D

申请日：1971-06-30

Applicant: YANAGIMOTO SEISAKUSHO CO LTD

Inventor： TSURUTA H ,  KIYOSE N

IPC: G01J3/427 ,  G01J3/02 ,  G01N21/27 ,  G01N21/31 ,  G01J3/46 ,  G01N21/22

CPC classification number: G01N21/314

Abstract: A photoelectric photometer for light absorption analysis in which a light beam passing through the sample cell is split into three beams of monochromatic light having different wavelengths which correspond to the wavelengths at the peak maximum, i.e., the beginning and the end of the absorption spectrum band, due to the constituent contained in the sample, and the light energy of the wavelength exhibiting the peak maximum is compared with a mean value of the light energies of the other two wavelengths, whereby the absorption degree of the constituent of the sample to be determined is indicated for direct reading.

Abstract translation: 一种用于光吸收分析的光电光度计，其中通过样品池的光束被分裂成具有不同波长的三个光束，其对应于峰值最大值的波长，即吸收光谱带的开始和结束 由于包含在样品中的成分，并且将表现出峰值最大值的波长的光能与其他两个波长的光能的平均值进行比较，由此待测样品的成分的吸收度 用于直接阅读。

公开(公告)号：US3519816A

公开(公告)日：1970-07-07

申请号：US3519816D

申请日：1966-10-05

Applicant: DOW CHEMICAL CO

Inventor： BARTZ ARNOLD M ,  WRIGHT NORMAN

IPC: G01J3/04 ,  G01J3/427 ,  G01N21/26 ,  G01N21/34

CPC classification number: G01J3/427 ,  G01J3/0232 ,  G01J3/04

公开(公告)号：US3279308A

公开(公告)日：1966-10-18

申请号：US32724263

申请日：1963-12-02

Applicant: DOW CHEMICAL CO

Inventor： BARTZ ARNOLD M ,  HERSCHER LEONARD W

IPC: G01J3/12 ,  G01J3/427

CPC classification number: G01J3/12 ,  G01J3/427

公开(公告)号：US12209950B2

公开(公告)日：2025-01-28

申请号：US18162385

申请日：2023-01-31

Applicant: Photothermal Spectroscopy Corp.

Inventor： Craig Prater ,  Kevin Kjoller ,  Roshan Shetty

IPC: G01J3/427 ,  G01J3/28 ,  G01J3/44 ,  G01N21/17 ,  G01N21/64 ,  G01N21/65

Abstract: System for performing chemical spectroscopy on samples from the scale of nanometers to millimeters or more with a multifunctional platform combining analytical and imaging techniques including dual beam photo-thermal spectroscopy with confocal microscopy, Raman spectroscopy, fluorescence detection, various vacuum analytical techniques and/or mass spectrometry. In embodiments described herein, the light beams of a dual-beam system are used for heating and sensing.

公开(公告)号：US12169350B2

公开(公告)日：2024-12-17

申请号：US16049926

申请日：2018-07-31

Applicant: Zoetis Services LLC

Inventor： Joel James Walukas ,  Daniel Wickstrom ,  Amanda Elizabeth Basciano

IPC: G02F2/00 ,  G01J3/10 ,  G01J3/427 ,  G01N17/00 ,  G01N21/25 ,  G01N21/31 ,  G01N33/08 ,  G02B27/14

Abstract: An apparatus for interrogating a media to be analyzed, such as an avian egg, is provided. Such an apparatus includes an emitter assembly configured to emit light toward a media. The emitter assembly has a first emitter source configured to emit a first light signal and a second emitter source configured to emit a second light signal. The first and second light signals are transmitted through the media in phase quadrature. A detector assembly is configured to detect the first and second light signals transmitted through the media. The detector assembly is further configured to resolve a relative or absolute amplitude of each of the first and second light signals. A processor is configured to process the detected signal to identify a property of the media using at least one of the relative and absolute amplitudes of the first and second light signals. An associated method is also provided.

公开(公告)号：US12050171B2

公开(公告)日：2024-07-30

申请号：US17831458

申请日：2022-06-03

Applicant: IDEXX Laboratories Inc.

Inventor： Garland Christian Misener ,  Bailey R. Auspland

IPC: G01N21/27 ,  G01J3/02 ,  G01J3/28 ,  G01J3/42 ,  G01J3/427 ,  G01N33/72

CPC classification number: G01N21/274 ,  G01J3/027 ,  G01J3/42 ,  G01J3/427 ,  G01N33/721 ,  G01J2003/2879

Abstract: A method for calibrating sensitivity of a photometer includes measuring, by a double-beam spectrophotometer, an absorbance spectrum of a control solution, which has been diluted and includes a control substance. The method further includes linearly regressing the absorbance spectrum of the control solution over a predetermined range of wavelengths and determining whether a first slope of the linearly regressed absorbance spectrum of the control solution falls within a range of slopes of lines obtained from linearly regressing absorbance spectra of a plurality of reference solutions over the predetermined range of wavelengths. A concentration of chromophore in each reference solution is known and the absorbance spectra of the plurality of reference solutions have been obtained by the double-beam spectrophotometer.

公开(公告)号：US11680892B2

公开(公告)日：2023-06-20

申请号：US17316453

申请日：2021-05-10

Applicant: Photothermal Spectroscopy Corp.

Inventor： Craig Prater ,  Kevin Kjoller ,  Roshan Shetty

IPC: G01J3/427 ,  G01N21/17 ,  G01J3/28 ,  G01J3/44 ,  G01N21/64 ,  G01N21/65

CPC classification number: G01N21/171 ,  G01J3/2823 ,  G01J3/427 ,  G01J3/4406 ,  G01J3/4412 ,  G01N21/6458 ,  G01N21/65 ,  G01N2021/1714

Abstract: System for performing chemical spectroscopy on samples from the scale of nanometers to millimeters or more with a multifunctional platform combining analytical and imaging techniques including dual beam photo-thermal spectroscopy with confocal microscopy, Raman spectroscopy, fluorescence detection, various vacuum analytical techniques and/or mass spectrometry. In embodiments described herein, the light beams of a dual-beam system are used for heating and sensing.

公开(公告)号：US20230030197A1

公开(公告)日：2023-02-02

申请号：US17888623

申请日：2022-08-16

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: G01N21/39 ,  H01S5/40 ,  H01S5/34 ,  G01J3/427

Abstract: A beating spectroscopy device includes: first and second quantum cascade lasers; a quantum cascade detector; and a sample holder configured to hold a sample on an optical path between the second quantum cascade laser and the quantum cascade detector. Lights from the first and second quantum cascade lasers are detected by the quantum cascade detector while a wavelength of the light from the second quantum cascade laser is changed to scan a frequency of a beating signal having a frequency in accordance with a wavelength difference between the lights from the first and second quantum cascade lasers.

公开(公告)号：US20220404626A1

公开(公告)日：2022-12-22

申请号：US17896516

申请日：2022-08-26

Applicant: Magic Leap, Inc.

Inventor： Nicole Elizabeth Samec ,  Nastasja U. Robaina ,  Adrian Kaehler ,  Mark Baerenrodt ,  Eric Baerenrodt ,  Christopher M. Harrises ,  Tammy Sherri Powers

IPC: G02B27/01 ,  G01J3/02 ,  G01J3/42 ,  A61B5/1455 ,  A61B5/11 ,  A61B5/00 ,  G06F3/03 ,  G01J3/10 ,  G06F3/01 ,  G01J3/28 ,  G01J3/427 ,  G01N21/359 ,  G01N33/483 ,  F21V8/00

Abstract: In some embodiments, a system comprises a head-mounted frame removably coupleable to the user's head; one or more light sources coupled to the head-mounted frame and configured to emit light with at least two different wavelengths toward a target object in an irradiation field of view of the light sources; one or more electromagnetic radiation detectors coupled to the head-mounted member and configured to receive light reflected after encountering the target object; and a controller operatively coupled to the one or more light sources and detectors and configured to determine and display an output indicating the identity or property of the target object as determined by the light properties measured by the detectors in relation to the light properties emitted by the light sources.