FR2231958A1 - Primary or secondary light source - has device for determination of their colour components or coordinates in terms of international standard X-Y-Z system - Google Patents

Primary or secondary light source - has device for determination of their colour components or coordinates in terms of international standard X-Y-Z system

Info

Publication number
FR2231958A1
FR2231958A1 FR7418053A FR7418053A FR2231958A1 FR 2231958 A1 FR2231958 A1 FR 2231958A1 FR 7418053 A FR7418053 A FR 7418053A FR 7418053 A FR7418053 A FR 7418053A FR 2231958 A1 FR2231958 A1 FR 2231958A1
Authority
FR
France
Prior art keywords
colour
coordinates
values
determination
primary
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
FR7418053A
Other languages
French (fr)
Other versions
FR2231958B3 (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.)
Magyar Tudomanyos Akademia
Original Assignee
Magyar Tudomanyos Akademia
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 Magyar Tudomanyos Akademia filed Critical Magyar Tudomanyos Akademia
Publication of FR2231958A1 publication Critical patent/FR2231958A1/en
Application granted granted Critical
Publication of FR2231958B3 publication Critical patent/FR2231958B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/75—Analogue computers for specific processes, systems or devices, e.g. simulators for component analysis, e.g. of mixtures, of colours
    • 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
    • G01J3/465—Measurement of colour; Colour measuring devices, e.g. colorimeters taking into account the colour perception of the eye; using tristimulus detection
    • 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
    • G01J3/513—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters having fixed filter-detector pairs

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Color Image Communication Systems (AREA)

Abstract

The device comprises a sensor system consisting of three colour filters and one photocell which can carry out measurements in the internationally standardised (CIE), X, Y, Z colour coordinate system with good accuracy. The system converts, using linear transformation resistor network and summators, colour components values determined by instrument systems into corrected component values which better correspond to values measured in the international system. The colour coordinates are derived from the corrected values by a signal processing unit comprising an operational amplifier in a summating cct. and a digital ratiometer.
FR7418053A 1973-05-28 1974-05-24 Primary or secondary light source - has device for determination of their colour components or coordinates in terms of international standard X-Y-Z system Granted FR2231958A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUMA2478A HU168258B (en) 1973-05-28 1973-05-28

Publications (2)

Publication Number Publication Date
FR2231958A1 true FR2231958A1 (en) 1974-12-27
FR2231958B3 FR2231958B3 (en) 1976-06-25

Family

ID=10998656

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7418053A Granted FR2231958A1 (en) 1973-05-28 1974-05-24 Primary or secondary light source - has device for determination of their colour components or coordinates in terms of international standard X-Y-Z system

Country Status (4)

Country Link
DD (1) DD111736A5 (en)
DE (1) DE2424545A1 (en)
FR (1) FR2231958A1 (en)
HU (1) HU168258B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003470A1 (en) * 1985-12-13 1987-06-18 Bertin & Cie Method and device for determining the colour, particularly of a dental prosthesis

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57184937A (en) * 1981-05-08 1982-11-13 Omron Tateisi Electronics Co Color discriminating element
DE3217227C2 (en) * 1981-05-08 1986-11-27 Omron Tateisi Electronics Co., Kyoto Color detection device
DE3428364A1 (en) * 1984-08-01 1986-02-06 Ingenieurbüro Rudolf Weber KG, 6100 Darmstadt Colour recognition arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003470A1 (en) * 1985-12-13 1987-06-18 Bertin & Cie Method and device for determining the colour, particularly of a dental prosthesis
FR2591470A1 (en) * 1985-12-13 1987-06-19 Bertin & Cie METHOD AND DEVICE FOR DETERMINING THE COLOR, IN PARTICULAR A DENTAL PROSTHESIS
US4836674A (en) * 1985-12-13 1989-06-06 Bertin & Cie Method and apparatus for determining color, in particular of a dental prosthesis

Also Published As

Publication number Publication date
DE2424545A1 (en) 1975-01-02
HU168258B (en) 1976-03-28
DD111736A5 (en) 1975-03-05
FR2231958B3 (en) 1976-06-25

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