公开(公告)号：EP3344962A1

公开(公告)日：2018-07-11

申请号：EP16843018.9

申请日：2016-09-01

Applicant: California Institute of Technology

Inventor： VASUDEV, Ramabhadran

IPC: G01J3/06 ,  G01J3/16 ,  G01J3/02 ,  G01N1/40

CPC classification number: G01N21/39 ,  G01J3/42 ,  G01J2003/423 ,  G01N21/031 ,  G01N2021/391 ,  G01N2201/0698

Abstract: Spectroscopic apparatus and methods incorporating a gas sensor configured to detect low concentration gases, including gases that are hazardous volatiles are provided. Low concentration gases can comprise gases where detection of concentrations on the order of parts-per-million (ppm), and in many embodiments part-per-billion (ppb) is required. The gas may be a species, such as, for example hydrogen sulfide (H2S) that may be produced in drilling and/or volcanic eruptions. The spectroscopic apparatus and methods are configured to operate in particular atmospheres where gas detection can be challenging, such as in ambient air and/or in space where various contaminants may be present. The spectroscopic apparatus and methods may incorporate a long path length detector, such as, for example, a cavity-enhanced absorption spectrometer. The methods and apparatus further incorporate a wavelength modulation technique to improve the signal-to-noise ratio.

公开(公告)号：US3254556A

公开(公告)日：1966-06-07

申请号：US11346961

申请日：1961-05-29

Applicant: COLEMAN INSTR CORP

Inventor： STAUNTON JOHN J J

IPC: G01J3/14 ,  G01J3/16 ,  G02B5/04

CPC classification number: G01J3/14 ,  G01J3/16 ,  G02B5/045

公开(公告)号：US3244879A

公开(公告)日：1966-04-05

申请号：US18408562

申请日：1962-04-02

Applicant: ITT

Inventor： HALL JR FREEMAN F

IPC: G01J3/16

CPC classification number: G01J3/16

公开(公告)号：US2652742A

公开(公告)日：1953-09-22

申请号：US24073751

申请日：1951-08-07

Applicant: COMMW SCIENT IND RES ORG

Inventor： ALAN WALSH

IPC: G01J3/16

CPC classification number: G01J3/16

公开(公告)号：US2595706A

公开(公告)日：1952-05-06

申请号：US8355149

申请日：1949-03-26

Applicant: FARRAND OPTICAL CO INC

Inventor： SEYMOUR ROSIN

IPC: G01J3/16

CPC classification number: G01J3/16

公开(公告)号：WO2017040848A1

公开(公告)日：2017-03-09

申请号：PCT/US2016/049988

申请日：2016-09-01

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： VASUDEV, Ramabhadran

IPC: G01J3/06 ,  G01J3/16 ,  G01J3/02 ,  G01N1/40

CPC classification number: G01N21/39 ,  G01J3/42 ,  G01N21/031 ,  G01N2201/0698

Abstract: Spectroscopic apparatus and methods incorporating a gas sensor configured to detect low concentration gases, including gases that are hazardous volatiles are provided. Low concentration gases can comprise gases where detection of concentrations on the order of parts-per-million (ppm), and in many embodiments part-per-billion (ppb) is required. The gas may be a species, such as, for example hydrogen sulfide (H 2 S) that may be produced in drilling and/or volcanic eruptions. The spectroscopic apparatus and methods are configured to operate in particular atmospheres where gas detection can be challenging, such as in ambient air and/or in space where various contaminants may be present. The spectroscopic apparatus and methods may incorporate a long path length detector, such as, for example, a cavity-enhanced absorption spectrometer. The methods and apparatus further incorporate a wavelength modulation technique to improve the signal-to-noise ratio.

Abstract translation: 提供了配置用于检测低浓度气体（包括有害挥发物的气体）的气体传感器的光谱仪和方法。 低浓度气体可以包括气体，其中需要检测百万分之一ppm（ppm）的数量级，并且在许多实施方案中检测浓度为十亿分之一（ppb）。 气体可以是物种，例如可能在钻井和/或火山喷发中产生的硫化氢（H 2 S）。 分光设备和方法被配置为在气体检测可能具有挑战性的特别气氛中操作，例如在环境空气和/或可能存在各种污染物的空间中。 分光装置和方法可以包括长路径长度检测器，例如腔增强吸收光谱仪。 所述方法和装置还包括波长调制技术以提高信噪比。

公开(公告)号：US3521960A

公开(公告)日：1970-07-28

申请号：US3521960D

申请日：1964-01-20

Applicant: HARRY S NEWCOMER

Inventor： NEWCOMER HARRY S

IPC: G01J3/12 ,  G01J3/16 ,  G01J3/14 ,  G01J3/18

CPC classification number: G01J3/16 ,  G01J3/12

公开(公告)号：US3098408A

公开(公告)日：1963-07-23

申请号：US79531159

申请日：1959-02-11

Applicant: APPLIED PHYSICS CORP

Inventor： CARY HENRY H

IPC: G01J3/04 ,  G01J3/12 ,  G01J3/16 ,  G01J3/18

CPC classification number: G01J3/12 ,  G01J3/04 ,  G01J3/16 ,  G01J2003/1828

公开(公告)号：US3048080A

公开(公告)日：1962-08-07

申请号：US85012459

申请日：1959-11-02

Applicant: WHITE JOHN U

Inventor： WHITE JOHN U

IPC: G01J3/14 ,  G01J3/16

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/14 ,  G01J3/16

公开(公告)号：US2670648A

公开(公告)日：1954-03-02

申请号：US12054249

申请日：1949-10-10

Applicant: BECKMAN INSTRUMENTS INC

Inventor： MILLER WILLIAM C ,  STRAIN DOUGLAS C

IPC: G01J3/16

CPC classification number: G01J3/16