GB2262361B - A method of producing a light beam having a wavelength spectrum with the characteristics of an absorption spectrum of a molecular species or mixture - Google Patents

A method of producing a light beam having a wavelength spectrum with the characteristics of an absorption spectrum of a molecular species or mixture

Info

Publication number
GB2262361B
GB2262361B GB9226041A GB9226041A GB2262361B GB 2262361 B GB2262361 B GB 2262361B GB 9226041 A GB9226041 A GB 9226041A GB 9226041 A GB9226041 A GB 9226041A GB 2262361 B GB2262361 B GB 2262361B
Authority
GB
United Kingdom
Prior art keywords
mixture
producing
light beam
spectrum
molecular species
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.)
Expired - Fee Related
Application number
GB9226041A
Other versions
GB9226041D0 (en
GB2262361A (en
Inventor
John Stanton Wykes
Martin John Willett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coal Industry Patents Ltd
British Gas PLC
Original Assignee
Coal Industry Patents Ltd
British Gas PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB919126549A external-priority patent/GB9126549D0/en
Application filed by Coal Industry Patents Ltd, British Gas PLC filed Critical Coal Industry Patents Ltd
Priority to GB9226041A priority Critical patent/GB2262361B/en
Priority to GB9508841A priority patent/GB2287098B/en
Publication of GB9226041D0 publication Critical patent/GB9226041D0/en
Publication of GB2262361A publication Critical patent/GB2262361A/en
Application granted granted Critical
Publication of GB2262361B publication Critical patent/GB2262361B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J3/1256—Generating the spectrum; Monochromators using acousto-optic tunable filter
    • 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
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
    • 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
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J3/18—Generating the spectrum; Monochromators using diffraction elements, e.g. grating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/3103—Atomic absorption analysis
    • 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
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J2003/1226—Interference filters
    • G01J2003/1252—Using "resonance cell", e.g. Na vapor
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9226041A 1991-12-13 1992-12-14 A method of producing a light beam having a wavelength spectrum with the characteristics of an absorption spectrum of a molecular species or mixture Expired - Fee Related GB2262361B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9226041A GB2262361B (en) 1991-12-13 1992-12-14 A method of producing a light beam having a wavelength spectrum with the characteristics of an absorption spectrum of a molecular species or mixture
GB9508841A GB2287098B (en) 1992-12-14 1992-12-14 Optically sensing gaseous molecular species

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919126549A GB9126549D0 (en) 1991-12-13 1991-12-13 Sources of molecular radiation
GB9226041A GB2262361B (en) 1991-12-13 1992-12-14 A method of producing a light beam having a wavelength spectrum with the characteristics of an absorption spectrum of a molecular species or mixture

Publications (3)

Publication Number Publication Date
GB9226041D0 GB9226041D0 (en) 1993-02-10
GB2262361A GB2262361A (en) 1993-06-16
GB2262361B true GB2262361B (en) 1996-07-03

Family

ID=26300004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9226041A Expired - Fee Related GB2262361B (en) 1991-12-13 1992-12-14 A method of producing a light beam having a wavelength spectrum with the characteristics of an absorption spectrum of a molecular species or mixture

Country Status (1)

Country Link
GB (1) GB2262361B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287098B (en) * 1992-12-14 1996-06-19 Coal Ind Optically sensing gaseous molecular species
GB2286041B (en) * 1994-01-20 1998-04-08 Marconi Gec Ltd High resolution infrared spectroscope

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874462A (en) * 1959-05-21 1961-08-10 Ass Elect Ind Improvements relating to diffraction gratings
US3558216A (en) * 1968-09-25 1971-01-26 Agency Ind Science Techn Polyethylene diffraction grafting and method of manufacture thereof
US3741648A (en) * 1971-07-16 1973-06-26 Us Air Force Acoustic beam splitter for infrared lasers
GB2017331A (en) * 1978-02-09 1979-10-03 Nippon Electric Co Method of producing dielectric diffraction gratings
WO1985004985A2 (en) * 1984-04-23 1985-11-07 American Telephone & Telegraph Company Devices formed and processes utilizing organic materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874462A (en) * 1959-05-21 1961-08-10 Ass Elect Ind Improvements relating to diffraction gratings
US3558216A (en) * 1968-09-25 1971-01-26 Agency Ind Science Techn Polyethylene diffraction grafting and method of manufacture thereof
US3741648A (en) * 1971-07-16 1973-06-26 Us Air Force Acoustic beam splitter for infrared lasers
GB2017331A (en) * 1978-02-09 1979-10-03 Nippon Electric Co Method of producing dielectric diffraction gratings
WO1985004985A2 (en) * 1984-04-23 1985-11-07 American Telephone & Telegraph Company Devices formed and processes utilizing organic materials

Also Published As

Publication number Publication date
GB9226041D0 (en) 1993-02-10
GB2262361A (en) 1993-06-16

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19991214