GB1411540A - Colourimeters - Google Patents
ColourimetersInfo
- Publication number
- GB1411540A GB1411540A GB4037371A GB4037371A GB1411540A GB 1411540 A GB1411540 A GB 1411540A GB 4037371 A GB4037371 A GB 4037371A GB 4037371 A GB4037371 A GB 4037371A GB 1411540 A GB1411540 A GB 1411540A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- light
- slit
- photo
- mask
- 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
Links
- 230000007935 neutral effect Effects 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
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
- G01J3/02—Details
-
- 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
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
-
- 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
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0251—Colorimeters making use of an integrating sphere
-
- 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
- G01J3/02—Details
- G01J3/04—Slit arrangements slit adjustment
-
- 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
- G01J2003/467—Colour computing
Abstract
1411540 Photo-electric colorimeters PAINT RESEARCH ASSOCIATION 24 Nov 1972 [27 Aug 1971] 40373/71 Heading G1A [Also in Division G2] In a colour measuring apparatus in which light reflected from a surface being monitored is gathered by a plurality of light guides 14, the light issuing from each light guide is divided into a number of portions (36), Fig. 3 (not shown), each portion is incident upon a different wavelength filtering part of a filter 50 whose absorption wavelength varies across its width, and the light passing through the filter is incident upon a photo-cell 60 whose output is indicative of the colour of the surface. The divided light guide ends (36) are directed to the slits (42) in a mask 40, each slit corresponding to a band-width of about 20nm for a filter 50 whose absorption wavelength varies from 400 to 700 nm. Thus each slit receives light from all the light guides and directs this light to the corresponding portion of the filter 50. Between the mask and the filter is located an arrangement 44 of parallel neutral filters, one for each slit in the mask 40. The density of each neutral filter is chosen so that the output from photo-multiplier 60 represents one of the three primary stimuli X, Y, Z of the C I E standard observer, or some other colour function. To derive the other two stimuli, two different neutral filter arrangements 44 are used. The filter arrangement 44 may be replaced by an array of adjustable slits, and the intensity at each wavelength may be monitored in turn by employing a shutter with a slit. The ultraviolet fluorescence properties of samples may be monitored.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4037371A GB1411540A (en) | 1971-08-27 | 1971-08-27 | Colourimeters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4037371A GB1411540A (en) | 1971-08-27 | 1971-08-27 | Colourimeters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1411540A true GB1411540A (en) | 1975-10-29 |
Family
ID=10414569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4037371A Expired GB1411540A (en) | 1971-08-27 | 1971-08-27 | Colourimeters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1411540A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2652554A1 (en) * | 1976-11-18 | 1978-05-24 | Arnold & Richter Kg | Colorimeter for photographic negatives - has probe connected to photoreceiver by light conductor through correcting mask |
EP0079517A1 (en) * | 1981-11-17 | 1983-05-25 | Akzo Coatings GmbH | Colour-measuring device |
GB2135074A (en) * | 1983-01-24 | 1984-08-22 | Univ Duke | A spectrophotometric metabolism monitoring apparatus |
GB2211627A (en) * | 1987-10-29 | 1989-07-05 | Messerschmitt Boelkow Blohm | Optical wide-angle sensor head |
EP0683384A1 (en) * | 1994-05-19 | 1995-11-22 | Schablonentechnik Kufstein Aktiengesellschaft | Apparatus for measuring the colour valve of a luminous flux |
-
1971
- 1971-08-27 GB GB4037371A patent/GB1411540A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2652554A1 (en) * | 1976-11-18 | 1978-05-24 | Arnold & Richter Kg | Colorimeter for photographic negatives - has probe connected to photoreceiver by light conductor through correcting mask |
EP0079517A1 (en) * | 1981-11-17 | 1983-05-25 | Akzo Coatings GmbH | Colour-measuring device |
GB2135074A (en) * | 1983-01-24 | 1984-08-22 | Univ Duke | A spectrophotometric metabolism monitoring apparatus |
GB2211627A (en) * | 1987-10-29 | 1989-07-05 | Messerschmitt Boelkow Blohm | Optical wide-angle sensor head |
GB2211627B (en) * | 1987-10-29 | 1991-12-18 | Messerschmitt Boelkow Blohm | Optical wide-angle sensors |
EP0683384A1 (en) * | 1994-05-19 | 1995-11-22 | Schablonentechnik Kufstein Aktiengesellschaft | Apparatus for measuring the colour valve of a luminous flux |
US5604594A (en) * | 1994-05-19 | 1997-02-18 | Schablonentechnik Kufstein Aktiengesellschaft | Device and method for determining the color value of a light |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |