GB1245700A - Improved photoelectric trichromatic colorimeters - Google Patents

Improved photoelectric trichromatic colorimeters

Info

Publication number
GB1245700A
GB1245700A GB05435/69A GB1543569A GB1245700A GB 1245700 A GB1245700 A GB 1245700A GB 05435/69 A GB05435/69 A GB 05435/69A GB 1543569 A GB1543569 A GB 1543569A GB 1245700 A GB1245700 A GB 1245700A
Authority
GB
United Kingdom
Prior art keywords
cells
march
photo
colorimeters
trichromatic
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
GB05435/69A
Inventor
William Harrison
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB05435/69A priority Critical patent/GB1245700A/en
Publication of GB1245700A publication Critical patent/GB1245700A/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
    • G01J3/50—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
    • G01J3/50—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

1, 245, 700. Reflectance colorimeter. W. HARRISON. March 23, 1970 [March 25, 1969], No.15435/69. Heading G1A. In a reflectance colorimeter for examining the colour of a length of material the material is illuminated by at least one fluorescent tube and the reflected light is monitored by a number of photo-cells each having a respective different filter, arranged in a line parallel to the tube and means are provided for derivingaratio of the current or voltage in two of the cells or of comparing the outputs of the respective cells with that of a reference cell exposed directly to the source. Filters suitable for indicating colour measurement in terms of the X, Y, Z tristimulus values of the CIE are exemplified, and potentiometer meter circuits are shown. A housing having an aperture S, Fig. 1, for monitoring the material includes two fluorescent tubes T1, T2, photo-cells P1-3, filters B, G, R, and reference cells P4-6 Potentiometer current and voltage balancing arrangements are described.
GB05435/69A 1969-03-25 1969-03-25 Improved photoelectric trichromatic colorimeters Expired GB1245700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB05435/69A GB1245700A (en) 1969-03-25 1969-03-25 Improved photoelectric trichromatic colorimeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB05435/69A GB1245700A (en) 1969-03-25 1969-03-25 Improved photoelectric trichromatic colorimeters

Publications (1)

Publication Number Publication Date
GB1245700A true GB1245700A (en) 1971-09-08

Family

ID=10059083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB05435/69A Expired GB1245700A (en) 1969-03-25 1969-03-25 Improved photoelectric trichromatic colorimeters

Country Status (1)

Country Link
GB (1) GB1245700A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107506A1 (en) * 1982-10-28 1984-05-02 Kabushiki Kaisha Toshiba Color image sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107506A1 (en) * 1982-10-28 1984-05-02 Kabushiki Kaisha Toshiba Color image sensor
US4716456A (en) * 1982-10-28 1987-12-29 Tokya Shibaura Denki Kabushiki Kaisha CCD Color image sensor with a light source having a spectrum distribution characteristic having peaks at 470 nm and 590 nm and having no wavelengths above 700 nm

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