WO2009013718A3 - Methods and apparatus for tristimulus colorimetry - Google Patents

Methods and apparatus for tristimulus colorimetry Download PDF

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Publication number
WO2009013718A3
WO2009013718A3 PCT/IB2008/052963 IB2008052963W WO2009013718A3 WO 2009013718 A3 WO2009013718 A3 WO 2009013718A3 IB 2008052963 W IB2008052963 W IB 2008052963W WO 2009013718 A3 WO2009013718 A3 WO 2009013718A3
Authority
WO
WIPO (PCT)
Prior art keywords
tristimulus
methods
color
light
colorimetry
Prior art date
Application number
PCT/IB2008/052963
Other languages
French (fr)
Other versions
WO2009013718A2 (en
Inventor
Ian Ashdown
Original Assignee
Tir Technology Lp
Koninkl Philips Electronics Nv
Ian Ashdown
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 Tir Technology Lp, Koninkl Philips Electronics Nv, Ian Ashdown filed Critical Tir Technology Lp
Publication of WO2009013718A2 publication Critical patent/WO2009013718A2/en
Publication of WO2009013718A3 publication Critical patent/WO2009013718A3/en

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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • 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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • 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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/462—Computing operations in or between colour spaces; Colour management systems

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

Tristimulus colorimeter apparatus and methods of tristimulus colorimetry are described. The tristimulus colorimeter apparatus can be used for determining color of light by specifying a first, a second and a third tristimulus value for the light. The colorimeter apparatus may detect signals according to color matching functions having spectral responsivities matched by detectors of the colorimeters. The detected signals may be processed by one or more computations, such as matrix operations, to provide the tristimulus values of the color.
PCT/IB2008/052963 2007-07-23 2008-07-23 Methods and apparatus for tristimulus colorimetry WO2009013718A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95139307P 2007-07-23 2007-07-23
US60/951,393 2007-07-23

Publications (2)

Publication Number Publication Date
WO2009013718A2 WO2009013718A2 (en) 2009-01-29
WO2009013718A3 true WO2009013718A3 (en) 2009-03-26

Family

ID=40216274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/052963 WO2009013718A2 (en) 2007-07-23 2008-07-23 Methods and apparatus for tristimulus colorimetry

Country Status (1)

Country Link
WO (1) WO2009013718A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011132360A1 (en) * 2010-04-23 2011-10-27 コニカミノルタセンシング株式会社 Optical system for measurements, and luminance colorimeter and colorimeter using same
KR101476902B1 (en) * 2010-05-14 2014-12-26 코니카 미놀타 옵틱스, 인크. Optical system for measurement, luminance meter using the optical system, color luminance meter, and color meter
GB201109013D0 (en) 2011-05-27 2011-07-13 Cambridge Entpr Ltd Electronic devices
JP6273064B1 (en) * 2017-10-03 2018-01-31 日本板硝子株式会社 Optical filter and imaging device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720811A (en) * 1950-09-19 1955-10-18 Rca Corp Tristimulus photometer
US20030169341A1 (en) * 2002-02-05 2003-09-11 Seiko Epson Corporation Photodetector, photodetecting method and storage medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720811A (en) * 1950-09-19 1955-10-18 Rca Corp Tristimulus photometer
US20030169341A1 (en) * 2002-02-05 2003-09-11 Seiko Epson Corporation Photodetector, photodetecting method and storage medium

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
STOCKMAN A ET AL: "THE SPECTRAL SENSITIVITIES OF THE MIDDLE- AND LONG-WAVELENGTH-SENSITIVE CONES DERIVED FROM MEASUREMENTS IN OBSERVERS OF KNOWN GENOTYPE", VISION RESEARCH, PERGAMON PRESS, OXFORD, GB, vol. 40, 11 May 2000 (2000-05-11), pages 1711 - 1737, XP008000448, ISSN: 0042-6989 *
STOCKMAN A ET AL: "The spectral sensitivity of the human short-wavelength sensitive cones derived from thresholds and color matches", VISION RESEARCH ELSEVIER UK, vol. 39, no. 17, August 1999 (1999-08-01), pages 2901 - 2927, XP002511473, ISSN: 0042-6989 *

Also Published As

Publication number Publication date
WO2009013718A2 (en) 2009-01-29

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