GB191215678A - Improvements in Apparatus for Determining or Matching Colours and Shades of Colours. - Google Patents

Improvements in Apparatus for Determining or Matching Colours and Shades of Colours.

Info

Publication number
GB191215678A
GB191215678A GB191215678DA GB191215678A GB 191215678 A GB191215678 A GB 191215678A GB 191215678D A GB191215678D A GB 191215678DA GB 191215678 A GB191215678 A GB 191215678A
Authority
GB
United Kingdom
Prior art keywords
wedges
colours
wedge
shades
shows
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
Inventor
Victor Herbert Gregory
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
Application granted granted Critical
Publication of GB191215678A publication Critical patent/GB191215678A/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
    • 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
    • G01J3/463—Colour matching

Abstract

15,678. Gregory, V. H. July 4. Colorimeters; colour filters.-An apparatus for matching and determining colours and shades of colours comprises a number of superposed colour wedges adjustable so that a beam of light passing through them is given various colours and shades by the variable thickness of the separate wedges. In the form shown in Fig. 10, three wedges 1, 1<a>, 1<b>, of red, blue, and yellow glass, are separately adjustable between an aperture 10 through which a beam of light is directed by a mirror 13 and a sight aperture 12 in the case 5. The wedges taper in both longitudinal and transverse directions. The material 19 to be matched is placed on the top of the case and viewed through a tube 18, and, when the colour has been matched by adjusting the wedges longitudinally, the precise shade is determined by adjusting sight apertures 16, 21, Fig. 11, transversely. The wedges may be stepped in one direction, or may consist of containers of plain glass filled with coloured liquid. Fig. 6 shows a wedge consisting of a glass case filled with coloured liquid up to an apex 26<a> which is supported on a knife-edge, the wedge being adjusted by tilting. Fig. 4 shows an annular wedge tapering both radially and circumferentially. Fig. 8 shows a wedge comprising plain glass sheets 37, 38 pivoted at 39, pressed open by springs 43, and containing coloured liquid between them, the angle between the plates being adjusted by a snail cam 46.
GB191215678D 1912-07-04 1912-07-04 Improvements in Apparatus for Determining or Matching Colours and Shades of Colours. Expired GB191215678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191215678T 1912-07-04

Publications (1)

Publication Number Publication Date
GB191215678A true GB191215678A (en) 1913-07-03

Family

ID=32572954

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191215678D Expired GB191215678A (en) 1912-07-04 1912-07-04 Improvements in Apparatus for Determining or Matching Colours and Shades of Colours.

Country Status (1)

Country Link
GB (1) GB191215678A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506342A (en) * 1947-08-09 1950-05-02 Arnold C Burke Placenta filter
US2560724A (en) * 1947-12-22 1951-07-17 William H Harrison Mirror for use in determining color contrast
US2732759A (en) * 1956-01-31 Osterberg
US2758501A (en) * 1951-03-16 1956-08-14 Kallmeyer Erich Colorimeter for different medical inverstigations
US3077140A (en) * 1960-02-17 1963-02-12 Simmon Brothers Inc Color filter devices for photographic printers and enlargers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732759A (en) * 1956-01-31 Osterberg
US2506342A (en) * 1947-08-09 1950-05-02 Arnold C Burke Placenta filter
US2560724A (en) * 1947-12-22 1951-07-17 William H Harrison Mirror for use in determining color contrast
US2758501A (en) * 1951-03-16 1956-08-14 Kallmeyer Erich Colorimeter for different medical inverstigations
US3077140A (en) * 1960-02-17 1963-02-12 Simmon Brothers Inc Color filter devices for photographic printers and enlargers

Similar Documents

Publication Publication Date Title
Oke et al. Secondary standard stars for absolute spectrophotometry
ITTO960454A1 (en) MICROFILTERS AND MICROSCHOPPER DEVICE FOR THE DYNAMIC SELECTION OF COLORS AND IMAGES.
GB191215678A (en) Improvements in Apparatus for Determining or Matching Colours and Shades of Colours.
CN103576411B (en) Multicolor femto-second laser pulse generation
Strutt Studies of iridescent colour, and the structure producing it. IV.—Iridescent beetles
US3227044A (en) Method of controlling the spectral composition of a light source by the utilization of color control and correcting light filters
US2809552A (en) Constant density multiple color plate
GB1229164A (en)
Daw Visual response to gradients of varying colour and equal luminance
US3418048A (en) Optical apparatus for photographic printing
US3228290A (en) Large aperture anisotropic electro-optic shutter
US1184199A (en) Condensing and cooling apparatus of the tubular surface type.
US898369A (en) Diffraction chromoscope.
GB1142524A (en) Color source
US1989748A (en) Muticolor filter, used in taking and projecting photos on lenticulated films
US1101026A (en) Method and apparatus for correcting artificial light.
DE761508C (en) Interference modulator for modulating light beams
SU103231A2 (en) Immersion Refractive Index Measurement Method
Hartridge An apparatus for projecting Spectra
GB2075698A (en) Light filter
Stebbins Photo-electric measures of new variable stars
US1163207A (en) Color photography.
Palmer White light fringes and dispersion in two-beam interferometry
DE2332926A1 (en) Glass-melting gas burner for lamp mfr. - has separate chambers, with outlet bores mutally at right angles for two gases
DE359408C (en) Color photography