FR552778A - Improvements to chromatic scale devices to facilitate the recognition of the degrees of tones of colored materials - Google Patents

Improvements to chromatic scale devices to facilitate the recognition of the degrees of tones of colored materials

Info

Publication number
FR552778A
FR552778A FR552778DA FR552778A FR 552778 A FR552778 A FR 552778A FR 552778D A FR552778D A FR 552778DA FR 552778 A FR552778 A FR 552778A
Authority
FR
France
Prior art keywords
tones
recognition
degrees
facilitate
colored materials
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
Other languages
French (fr)
Inventor
Jacques-Philippe Duclos
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 filed Critical
Application granted granted Critical
Publication of FR552778A publication Critical patent/FR552778A/en
Expired 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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
FR552778D 1922-06-12 1922-06-12 Improvements to chromatic scale devices to facilitate the recognition of the degrees of tones of colored materials Expired FR552778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR552778T 1922-06-12

Publications (1)

Publication Number Publication Date
FR552778A true FR552778A (en) 1923-05-07

Family

ID=8937781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR552778D Expired FR552778A (en) 1922-06-12 1922-06-12 Improvements to chromatic scale devices to facilitate the recognition of the degrees of tones of colored materials

Country Status (1)

Country Link
FR (1) FR552778A (en)

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