WO2005008196A3 - Method and device for measuring color temperature - Google Patents

Method and device for measuring color temperature Download PDF

Info

Publication number
WO2005008196A3
WO2005008196A3 PCT/IB2004/051196 IB2004051196W WO2005008196A3 WO 2005008196 A3 WO2005008196 A3 WO 2005008196A3 IB 2004051196 W IB2004051196 W IB 2004051196W WO 2005008196 A3 WO2005008196 A3 WO 2005008196A3
Authority
WO
WIPO (PCT)
Prior art keywords
color temperature
measuring
lamp
sensor assembly
quotient
Prior art date
Application number
PCT/IB2004/051196
Other languages
French (fr)
Other versions
WO2005008196A2 (en
Inventor
Arnold W Buij
Karel L Manders
Original Assignee
Koninkl Philips Electronics Nv
Arnold W Buij
Karel L Manders
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 Koninkl Philips Electronics Nv, Arnold W Buij, Karel L Manders filed Critical Koninkl Philips Electronics Nv
Priority to US10/565,144 priority Critical patent/US20060202641A1/en
Priority to JP2006520948A priority patent/JP2006528346A/en
Priority to EP04744555A priority patent/EP1660850A2/en
Publication of WO2005008196A2 publication Critical patent/WO2005008196A2/en
Publication of WO2005008196A3 publication Critical patent/WO2005008196A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G01D3/024—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation for range change; Arrangements for substituting one sensing member by another
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/12—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means
    • G01J1/14—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means using comparison with a surface of graded brightness
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
    • 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
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Radiation Pyrometers (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

A method for measuring a color temperature (TC) of a light source (2) comprises the steps of: measuring the partial intensity of one predefined blue spectral conpponent (B); measuring the luminance (V); and calculating the quotient BN as representing the color temperature (TC). The color temperature (TC) is calculated on the basis of a predetermined relationship between the color temperature (TC) and the quotient BN. Sensor assembly capable of generating a measuring signal containing information regarding the color temperature of a light source. Switch stage for cooperation with a sensor assembly. Driver for during a lamp with variable color temperature properties. Lamp system comprising a lamp, a sensor assembly and a lamp driver.
PCT/IB2004/051196 2003-07-22 2004-07-12 Method and device for measuring color temperature WO2005008196A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/565,144 US20060202641A1 (en) 2004-07-12 2004-07-12 Method and device for measuring color temperature
JP2006520948A JP2006528346A (en) 2003-07-22 2004-07-12 Method and apparatus for measuring color temperature
EP04744555A EP1660850A2 (en) 2003-07-22 2004-07-12 Method and device for measuring color temperature

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03102249.4 2003-07-22
EP03102249 2003-07-22

Publications (2)

Publication Number Publication Date
WO2005008196A2 WO2005008196A2 (en) 2005-01-27
WO2005008196A3 true WO2005008196A3 (en) 2005-05-12

Family

ID=34072670

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/051196 WO2005008196A2 (en) 2003-07-22 2004-07-12 Method and device for measuring color temperature

Country Status (4)

Country Link
EP (1) EP1660850A2 (en)
JP (1) JP2006528346A (en)
CN (1) CN1826513A (en)
WO (1) WO2005008196A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104903732A (en) * 2013-01-11 2015-09-09 诺基亚技术有限公司 Sensor array with fixed output

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045569A1 (en) * 2005-05-31 2006-12-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Charging capacitor charging device for operation of discharge lamp, has controller calculating switching time of switch for observation of reference values in real time, and controlling switch to calculated switching time for switching
US7678422B2 (en) 2006-12-13 2010-03-16 Air Products And Chemicals, Inc. Cyclic chemical vapor deposition of metal-silicon containing films
DE102008020382A1 (en) * 2008-04-23 2009-11-12 Chromasens Gmbh LED line light
CN101674689B (en) * 2008-09-11 2013-01-30 谢婉毓 Color temperature controller of light-emitting diodes (LED) and color temperature controlling method thereof
US8022631B2 (en) 2008-11-03 2011-09-20 General Electric Company Color control of light sources employing phosphors

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039824A (en) * 1974-08-08 1977-08-02 Minolta Camera Kabushiki Kaisha Focus detecting photoelectric device
US4222663A (en) * 1977-08-01 1980-09-16 United Technologies Corporation Optical pyrometer and technique for temperature measurement
EP0154997A2 (en) * 1984-03-13 1985-09-18 Nec Corporation A high resolution image sensor array using amorphous photo-diodes
EP0405674A1 (en) * 1989-06-30 1991-01-02 Koninklijke Philips Electronics N.V. Switching arrangement
DE4013422A1 (en) * 1990-04-26 1991-10-31 Grapho Metronic Gmbh & Co Illumination set=up for three-channel colour temp. measuring appts. - selects narrow separated spectral ranges using two narrow band filters and measures their energy content
US5302883A (en) * 1992-10-23 1994-04-12 Industrial Technology Research Institute Automated apparatus and method for the reproduction of same color temperature luminous intensity standard light source
EP0691742A2 (en) * 1994-07-05 1996-01-10 AT&T Corp. Optical receiver with a high impedance preamplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06351038A (en) * 1993-06-10 1994-12-22 Matsushita Electric Ind Co Ltd Auto-white balance device
DE4421919A1 (en) 1994-06-24 1996-01-04 Karl Gerhard Colour temp. constancy checking appts. for light source e.g. commercial or laboratory fluorescent lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039824A (en) * 1974-08-08 1977-08-02 Minolta Camera Kabushiki Kaisha Focus detecting photoelectric device
US4222663A (en) * 1977-08-01 1980-09-16 United Technologies Corporation Optical pyrometer and technique for temperature measurement
EP0154997A2 (en) * 1984-03-13 1985-09-18 Nec Corporation A high resolution image sensor array using amorphous photo-diodes
EP0405674A1 (en) * 1989-06-30 1991-01-02 Koninklijke Philips Electronics N.V. Switching arrangement
DE4013422A1 (en) * 1990-04-26 1991-10-31 Grapho Metronic Gmbh & Co Illumination set=up for three-channel colour temp. measuring appts. - selects narrow separated spectral ranges using two narrow band filters and measures their energy content
US5302883A (en) * 1992-10-23 1994-04-12 Industrial Technology Research Institute Automated apparatus and method for the reproduction of same color temperature luminous intensity standard light source
EP0691742A2 (en) * 1994-07-05 1996-01-10 AT&T Corp. Optical receiver with a high impedance preamplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104903732A (en) * 2013-01-11 2015-09-09 诺基亚技术有限公司 Sensor array with fixed output

Also Published As

Publication number Publication date
EP1660850A2 (en) 2006-05-31
WO2005008196A2 (en) 2005-01-27
CN1826513A (en) 2006-08-30
JP2006528346A (en) 2006-12-14

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