GB2294778A - Improved spectrometer - Google Patents

Improved spectrometer

Info

Publication number
GB2294778A
GB2294778A GB9523711A GB9523711A GB2294778A GB 2294778 A GB2294778 A GB 2294778A GB 9523711 A GB9523711 A GB 9523711A GB 9523711 A GB9523711 A GB 9523711A GB 2294778 A GB2294778 A GB 2294778A
Authority
GB
United Kingdom
Prior art keywords
fourier
birefringent
polarisations
transform
light source
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
Application number
GB9523711A
Other versions
GB2294778B (en
GB9523711D0 (en
Inventor
Miles John Padgett
Alan James Duncan
Wilson Sibbett
Andrew Robert Harvey
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.)
Siemens PLC
Original Assignee
Siemens 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 GB939314302A external-priority patent/GB9314302D0/en
Application filed by Siemens PLC filed Critical Siemens PLC
Priority to GB9523711A priority Critical patent/GB2294778B/en
Publication of GB9523711D0 publication Critical patent/GB9523711D0/en
Publication of GB2294778A publication Critical patent/GB2294778A/en
Application granted granted Critical
Publication of GB2294778B publication Critical patent/GB2294778B/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
    • G01J3/28—Investigating the spectrum
    • G01J3/45—Interferometric spectrometry
    • G01J3/453—Interferometric spectrometry by correlation of the amplitudes
    • G01J3/4531—Devices without moving parts
    • 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
    • G01J3/447—Polarisation spectrometry

Abstract

A Fourier-transform spectrometer contains a birefringent optical component, removing the need for a Michelson interferometer used in conventional instruments. A suitable birefringent element, such as a Wollaston prism, is used to introduce a path difference between two light polarisations. Use of an extended light source so that all areas of the birefringent component are illuminated simultaneously ensures that different positions on the birefringent component correspond to different path differences between the two polarisations. A Fourier-transform of the resulting interferogram at the detector results in the spectral distribution of the input light being obtained. The use of an extended light source permits a Fourier-transform spectrometer with no moving parts to be achieved. <IMAGE>
GB9523711A 1993-07-10 1994-07-11 Fourier transform spectrometer with birefringent component between polarisers Expired - Fee Related GB2294778B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9523711A GB2294778B (en) 1993-07-10 1994-07-11 Fourier transform spectrometer with birefringent component between polarisers

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939314302A GB9314302D0 (en) 1993-07-10 1993-07-10 Improved spectrometer
GB9523711A GB2294778B (en) 1993-07-10 1994-07-11 Fourier transform spectrometer with birefringent component between polarisers
PCT/GB1994/001499 WO1995002171A1 (en) 1993-07-10 1994-07-11 Improved spectrometer

Publications (3)

Publication Number Publication Date
GB9523711D0 GB9523711D0 (en) 1996-02-21
GB2294778A true GB2294778A (en) 1996-05-08
GB2294778B GB2294778B (en) 1997-10-22

Family

ID=26303222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9523711A Expired - Fee Related GB2294778B (en) 1993-07-10 1994-07-11 Fourier transform spectrometer with birefringent component between polarisers

Country Status (1)

Country Link
GB (1) GB2294778B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774215A (en) * 1995-09-12 1998-06-30 Siemens Plc Reduced complexity fourier transform spectrometer
CN102297722A (en) * 2011-09-05 2011-12-28 西安交通大学 Double-channel differential polarizing interference imaging spectrometer
CN105959514A (en) * 2016-04-20 2016-09-21 河海大学 Weak target imaging detection device and method
CN108320303A (en) * 2017-12-19 2018-07-24 中国人民解放军战略支援部队航天工程大学 A kind of pinhole cameras detection method based on binocular detection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2300998A2 (en) * 1975-02-11 1976-09-10 Anvar DEVICE FOR SELECTIVE MODULATION INTERFERENTIAL SPECTROMETRY
US4732481A (en) * 1986-04-25 1988-03-22 Hitachi, Ltd. Polarization interferometer
DE3900247A1 (en) * 1988-01-06 1989-07-20 Hitachi Ltd Method and device for Fourier spectrophotometry

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016731C3 (en) * 1990-05-24 2001-04-26 Bruker Analytik Gmbh Fourier spectrometer
GB9412913D0 (en) * 1994-06-28 1994-08-17 Photonex Ltd An improved optical sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2300998A2 (en) * 1975-02-11 1976-09-10 Anvar DEVICE FOR SELECTIVE MODULATION INTERFERENTIAL SPECTROMETRY
US4732481A (en) * 1986-04-25 1988-03-22 Hitachi, Ltd. Polarization interferometer
DE3900247A1 (en) * 1988-01-06 1989-07-20 Hitachi Ltd Method and device for Fourier spectrophotometry

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
APPLIED OPTICS vol 31 no 28,1/10/92 pp 6096-6101 *
APPLIED SPECTROSCOPY vol.40,no.5,1 July 1986 pp 691-695 *
PAT ABS JP vol 12 no 129(P-692)(2976)21/04/88&JPA62251627(HITACHI)2/11/87 see abstract *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774215A (en) * 1995-09-12 1998-06-30 Siemens Plc Reduced complexity fourier transform spectrometer
CN102297722A (en) * 2011-09-05 2011-12-28 西安交通大学 Double-channel differential polarizing interference imaging spectrometer
CN102297722B (en) * 2011-09-05 2014-08-06 西安交通大学 Double-channel differential polarizing interference imaging spectrometer
CN105959514A (en) * 2016-04-20 2016-09-21 河海大学 Weak target imaging detection device and method
CN105959514B (en) * 2016-04-20 2018-09-21 河海大学 A kind of weak signal target imaging detection device
CN108320303A (en) * 2017-12-19 2018-07-24 中国人民解放军战略支援部队航天工程大学 A kind of pinhole cameras detection method based on binocular detection

Also Published As

Publication number Publication date
GB2294778B (en) 1997-10-22
GB9523711D0 (en) 1996-02-21

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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: 20120711