GB1362233A - Method of filtering light and apparatus therefor - Google Patents

Method of filtering light and apparatus therefor

Info

Publication number
GB1362233A
GB1362233A GB2871171A GB2871171A GB1362233A GB 1362233 A GB1362233 A GB 1362233A GB 2871171 A GB2871171 A GB 2871171A GB 2871171 A GB2871171 A GB 2871171A GB 1362233 A GB1362233 A GB 1362233A
Authority
GB
United Kingdom
Prior art keywords
frequency
vco
light
optical
voltage
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
Application number
GB2871171A
Other languages
English (en)
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB1362233A publication Critical patent/GB1362233A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/11—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
    • G02F1/113—Circuit or control arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB2871171A 1970-06-18 1971-06-18 Method of filtering light and apparatus therefor Expired GB1362233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4726770A 1970-06-18 1970-06-18

Publications (1)

Publication Number Publication Date
GB1362233A true GB1362233A (en) 1974-07-30

Family

ID=21947991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2871171A Expired GB1362233A (en) 1970-06-18 1971-06-18 Method of filtering light and apparatus therefor

Country Status (5)

Country Link
US (1) US3644015A (enExample)
CH (1) CH540499A (enExample)
DE (1) DE2122941C3 (enExample)
FR (1) FR2099243A5 (enExample)
GB (1) GB1362233A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2447925A (en) * 2007-03-28 2008-10-01 Internat Moisture Analysers Ltd Detector with broadband light source and variable rejection filter

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740117A (en) * 1971-07-22 1973-06-19 Hewlett Packard Co Acousto-optic filter having an increased optical beam aperture
US3729250A (en) * 1971-07-23 1973-04-24 Hewlett Packard Co Acousto-optic filter having means for damping acoustic resonances and stray light
US3996525A (en) * 1975-05-12 1976-12-07 The United States Of America As Represented By The Secretary Of The Navy Acousto-optically tuned laser
US4016563A (en) * 1975-05-27 1977-04-05 Hughes Aircraft Company Method and apparatus for acousto-optic pulse compression
US4265508A (en) * 1978-11-30 1981-05-05 Western Electric Company, Inc. Intermediate-web held terminal pins
US4456338A (en) * 1981-03-05 1984-06-26 Macdonald Dettwiler & Associates Ltd. Electronically tuneable light source
US4652756A (en) * 1985-05-20 1987-03-24 Westinghouse Electric Corp. Automated acousto-optic infra-red analyzer system for monitoring stack emissions
JP2817642B2 (ja) * 1995-01-05 1998-10-30 日本電気株式会社 高速可変光波長フィルタ
WO1996032689A1 (en) * 1995-04-14 1996-10-17 Greene Edwin B Negotiable instrument fraud detector and processor
JP3942297B2 (ja) * 1999-01-06 2007-07-11 株式会社アドバンテスト 光伝達特性測定方法およびこの方法を実施する装置
RU2239802C1 (ru) * 2003-02-25 2004-11-10 Санкт-Петербургский государственный университет аэрокосмического приборостроения Анализатор спектра сигналов оптического диапазона
FR2852155B1 (fr) * 2003-03-03 2006-08-25 Fastlite Procede et dispositif pour le controle de l'amplitude du spectre en longueurs d'ondes des impulsions lumineuses ultra breves emises par les amplificateurs laser a passages multiples

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339053A (en) * 1940-08-01 1944-01-11 Edwin D Coleman Spectrophotometer
US3432223A (en) * 1963-04-10 1969-03-11 Nippon Electric Co Modulator for a light beam
US3517332A (en) * 1963-04-16 1970-06-23 United Aircraft Corp Frequency modulation for lasers
US3354465A (en) * 1965-10-22 1967-11-21 Cons Electrodynamics Corp Constant density oscillograph trace
US3439974A (en) * 1966-03-11 1969-04-22 Bell Telephone Labor Inc Tunable light filter
US3563656A (en) * 1966-04-15 1971-02-16 Charles C Helms Monochromator wavelength drives
US3485559A (en) * 1967-11-13 1969-12-23 United Aircraft Corp Angle measuring apparatus utilizing lasers
US3562414A (en) * 1969-09-10 1971-02-09 Zenith Radio Corp Solid-state image display device with acoustic scanning of strain-responsive semiconductor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2447925A (en) * 2007-03-28 2008-10-01 Internat Moisture Analysers Ltd Detector with broadband light source and variable rejection filter
GB2447925B (en) * 2007-03-28 2010-04-07 Internat Moisture Analysers Ltd Fluid detector

Also Published As

Publication number Publication date
CH540499A (de) 1973-08-15
FR2099243A5 (enExample) 1972-03-10
US3644015A (en) 1972-02-22
DE2122941C3 (de) 1975-09-11
DE2122941B2 (de) 1975-02-06
DE2122941A1 (de) 1971-12-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee