CA2484130A1 - Ultrasensitive spectrophotometer - Google Patents
Ultrasensitive spectrophotometer Download PDFInfo
- Publication number
- CA2484130A1 CA2484130A1 CA002484130A CA2484130A CA2484130A1 CA 2484130 A1 CA2484130 A1 CA 2484130A1 CA 002484130 A CA002484130 A CA 002484130A CA 2484130 A CA2484130 A CA 2484130A CA 2484130 A1 CA2484130 A1 CA 2484130A1
- Authority
- CA
- Canada
- Prior art keywords
- optical system
- detection circuit
- features
- system components
- voltage proportional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0224—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using polarising or depolarising elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0286—Constructional arrangements for compensating for fluctuations caused by temperature, humidity or pressure, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a spectrometer, e.g. vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0291—Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
Abstract
One aspect of the invention is a spectrophotometer detection circuit (189, 934, 1031). In this aspect of the invention, currents attributable to reference and sample beams are cancelled in the current mode. The detection circuit produces a first voltage proportional to the difference in currents and a second voltage proportional to one of the reference or sample beams.
Both voltages are available to allow simultaneous measurement and analysis.
Another aspect of the invention concerns thermal stability. According to the invention, thermal conductivity is established among the housing (112, 900, 1000) and optical system components to promote equilibrium. Another preferred embodiment has a unitary solid metal housing (900, 1000) with a hollowed portion (900a, 1000a) defined to mount and place optical system components.
Recognition and identification of important noise sources in spectrophotometers forms an aspect of the invention contributing to the features and combinations of features in preferred embodiments.
Both voltages are available to allow simultaneous measurement and analysis.
Another aspect of the invention concerns thermal stability. According to the invention, thermal conductivity is established among the housing (112, 900, 1000) and optical system components to promote equilibrium. Another preferred embodiment has a unitary solid metal housing (900, 1000) with a hollowed portion (900a, 1000a) defined to mount and place optical system components.
Recognition and identification of important noise sources in spectrophotometers forms an aspect of the invention contributing to the features and combinations of features in preferred embodiments.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/135,854 | 2002-04-29 | ||
US10/135,854 US6741348B2 (en) | 2002-04-29 | 2002-04-29 | Ultrasensitive spectrophotometer |
PCT/US2003/010335 WO2003093776A1 (en) | 2002-04-29 | 2003-04-04 | Ultrasensitive spectrophotometer |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2484130A1 true CA2484130A1 (en) | 2003-11-13 |
CA2484130C CA2484130C (en) | 2009-10-20 |
Family
ID=29249547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002484130A Expired - Fee Related CA2484130C (en) | 2002-04-29 | 2003-04-04 | Ultrasensitive spectrophotometer |
Country Status (7)
Country | Link |
---|---|
US (1) | US6741348B2 (en) |
EP (1) | EP1499863A4 (en) |
JP (1) | JP2005524079A (en) |
CN (1) | CN100462700C (en) |
AU (1) | AU2003228434A1 (en) |
CA (1) | CA2484130C (en) |
WO (1) | WO2003093776A1 (en) |
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JP2004257909A (en) * | 2003-02-27 | 2004-09-16 | Horiba Ltd | Grain size distribution measuring device |
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US7268881B2 (en) * | 2004-02-17 | 2007-09-11 | The Curators Of The University Of Missouri | Light scattering detector |
US20070201136A1 (en) | 2004-09-13 | 2007-08-30 | University Of South Carolina | Thin Film Interference Filter and Bootstrap Method for Interference Filter Thin Film Deposition Process Control |
US7903252B2 (en) * | 2005-01-13 | 2011-03-08 | The Curators Of The University Of Missouri | Noise cancellation in fourier transform spectrophotometry |
US7262844B2 (en) * | 2005-01-13 | 2007-08-28 | The Curators Of The University Of Missouri | Ultrasensitive spectrophotometer |
US20070030482A1 (en) * | 2005-08-08 | 2007-02-08 | Zhenghua Ji | Spectrophotometer with adjustable light pathlength |
WO2007064575A1 (en) | 2005-11-28 | 2007-06-07 | Ometric Corporation | Optical analysis system and method for real time multivariate optical computing |
WO2007061436A1 (en) * | 2005-11-28 | 2007-05-31 | University Of South Carolina | Self calibration methods for optical analysis system |
EP1955046A1 (en) | 2005-11-28 | 2008-08-13 | University of South Carolina | Method of high-speed monitoring based on the use of multivariate optical elements |
US20070166245A1 (en) | 2005-11-28 | 2007-07-19 | Leonard Mackles | Propellant free foamable toothpaste composition |
MX2008011468A (en) | 2006-03-09 | 2009-02-16 | Alltech Associates Inc | Evaporative light scattering detector. |
US9170154B2 (en) | 2006-06-26 | 2015-10-27 | Halliburton Energy Services, Inc. | Data validation and classification in optical analysis systems |
EP2078187A2 (en) | 2006-11-02 | 2009-07-15 | University of South Carolina | Multi-analyte optical computing system |
WO2008121692A1 (en) | 2007-03-30 | 2008-10-09 | University Of South Carolina | Tablet analysis and measurement system |
US8213006B2 (en) * | 2007-03-30 | 2012-07-03 | Halliburton Energy Services, Inc. | Multi-analyte optical computing system |
WO2008121715A1 (en) | 2007-03-30 | 2008-10-09 | Ometric Corporation | In-line process measurement systems and methods |
US8283633B2 (en) | 2007-11-30 | 2012-10-09 | Halliburton Energy Services, Inc. | Tuning D* with modified thermal detectors |
US8212213B2 (en) | 2008-04-07 | 2012-07-03 | Halliburton Energy Services, Inc. | Chemically-selective detector and methods relating thereto |
WO2009152321A1 (en) * | 2008-06-11 | 2009-12-17 | The Curators Of The University Of Missouri | Liquid chromatography detector and flow controller therefor |
WO2010023516A1 (en) * | 2008-08-28 | 2010-03-04 | S.O.I.Tec Silicon On Insulator Technologies | Uv absorption based monitor and control of chloride gas stream |
US7957001B2 (en) * | 2008-10-10 | 2011-06-07 | Ge Infrastructure Sensing, Inc. | Wavelength-modulation spectroscopy method and apparatus |
US7943915B2 (en) * | 2008-10-10 | 2011-05-17 | Ge Infrastructure Sensing, Inc. | Method of calibrating a wavelength-modulation spectroscopy apparatus |
US20100128368A1 (en) * | 2008-11-26 | 2010-05-27 | Jeffrey Max Belicofski | Z-Translation Mechanics; the Z-translating optical electro-mechanical allignment system |
JP5483161B2 (en) * | 2009-06-11 | 2014-05-07 | 横河電機株式会社 | Zero / span adjustment method for laser gas analyzer |
US8830474B2 (en) * | 2009-10-06 | 2014-09-09 | The Curators Of The University Of Missouri | External/internal optical adapter with reverse biased photodiodes for FTIR spectrophotometry |
CN102221538A (en) * | 2011-03-25 | 2011-10-19 | 宁波大学 | Device and method for measuring optical loss coefficient of infrared glass |
US8964183B2 (en) * | 2012-05-31 | 2015-02-24 | General Electric Company | Systems and methods for screening of biological samples |
CN104596935A (en) * | 2015-01-26 | 2015-05-06 | 力合科技(湖南)股份有限公司 | Adjustable type detection light path device |
CN105841813B (en) * | 2016-05-11 | 2017-12-26 | 浙江大学 | Hydrospace three-dimensional optical spectrum imagers and imaging method |
CA3027248A1 (en) | 2016-07-25 | 2018-02-01 | Mks Instruments, Inc. | Gas measurement system |
DE102016124068A1 (en) * | 2016-12-12 | 2018-06-14 | HELLA GmbH & Co. KGaA | Measuring device and method for fine dust measurement for a motor vehicle |
US11703388B2 (en) | 2017-01-19 | 2023-07-18 | Agilent Technologies, Inc. | Optical spectrometer modules, systems and methods for optical analysis with multiple light beams |
DE102017117132A1 (en) * | 2017-07-28 | 2019-01-31 | HELLA GmbH & Co. KGaA | Measuring device for fine dust measurement in at least one air volume for a vehicle, in particular for a motor vehicle |
EP3870953A4 (en) * | 2019-02-22 | 2022-11-02 | The Trustees of Princeton University | Spectroscopic devices, systems, and methods for optical sensing of molecular species |
FI130319B (en) | 2019-10-10 | 2023-06-19 | Teknologian Tutkimuskeskus Vtt Oy | Method and apparatus for measuring a spectrum of a gaseous sample |
CN112362546B (en) * | 2020-11-09 | 2021-08-10 | 中国南方电网有限责任公司超高压输电公司柳州局 | High-precision multiband portable particulate matter mass concentration measuring instrument |
RU2752020C1 (en) * | 2020-12-03 | 2021-07-22 | Федеральное государственное бюджетное учреждение науки Физический институт им. П.Н. Лебедева Российской академии наук (ФИАН) | Laser measurement unit |
AT525942A3 (en) * | 2022-03-11 | 2024-01-15 | Univ Wien Tech | Method and device for VCD analysis of an analyte |
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US3877817A (en) * | 1973-07-02 | 1975-04-15 | Wilson Ralston | Temperature stabilized photometer for kinetic analysis |
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DE3912032C1 (en) | 1989-04-12 | 1990-09-13 | Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De | |
US5064283A (en) * | 1989-09-14 | 1991-11-12 | The United States Of America As Represented By The Secretary Of The Army | Spectroscopy characterization module |
US5134276A (en) | 1990-10-09 | 1992-07-28 | International Business Machines Corporation | Noise cancelling circuitry for optical systems with signal dividing and combining means |
US5434412A (en) * | 1992-07-15 | 1995-07-18 | Myron J. Block | Non-spectrophotometric measurement of analyte concentrations and optical properties of objects |
JPH0653919A (en) * | 1992-07-31 | 1994-02-25 | Kyocera Corp | Automatic output controller for tdma transmitter |
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-
2002
- 2002-04-29 US US10/135,854 patent/US6741348B2/en not_active Expired - Lifetime
-
2003
- 2003-04-04 CA CA002484130A patent/CA2484130C/en not_active Expired - Fee Related
- 2003-04-04 CN CNB038153637A patent/CN100462700C/en not_active Expired - Fee Related
- 2003-04-04 WO PCT/US2003/010335 patent/WO2003093776A1/en active Application Filing
- 2003-04-04 JP JP2004501892A patent/JP2005524079A/en active Pending
- 2003-04-04 EP EP03726186A patent/EP1499863A4/en not_active Withdrawn
- 2003-04-04 AU AU2003228434A patent/AU2003228434A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CA2484130C (en) | 2009-10-20 |
US20030202179A1 (en) | 2003-10-30 |
AU2003228434A1 (en) | 2003-11-17 |
CN100462700C (en) | 2009-02-18 |
EP1499863A1 (en) | 2005-01-26 |
CN1666093A (en) | 2005-09-07 |
US6741348B2 (en) | 2004-05-25 |
EP1499863A4 (en) | 2009-10-21 |
WO2003093776A1 (en) | 2003-11-13 |
JP2005524079A (en) | 2005-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20190404 |