GB1063023A - Colorimeter - Google Patents
ColorimeterInfo
- Publication number
- GB1063023A GB1063023A GB16290/64A GB1629064A GB1063023A GB 1063023 A GB1063023 A GB 1063023A GB 16290/64 A GB16290/64 A GB 16290/64A GB 1629064 A GB1629064 A GB 1629064A GB 1063023 A GB1063023 A GB 1063023A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- cells
- variable
- photo
- colorimeter
- 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
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract 1
- 229940084430 four-way Drugs 0.000 abstract 1
- 229910052711 selenium Inorganic materials 0.000 abstract 1
- 239000011669 selenium Substances 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
- 239000005315 stained glass 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
- G01J3/46—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
1,063,023. Photo-electric colorimeters. EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENTYTARSASAG. April 20, 1964, No. 16290/64. Heading G1A. A colorimeter for the direct reading of the chromaticity co-ordinates, or deviations from predetermined co-ordinates, has at least three colour filters and one or more photo-electric detectors and utilizes separate arrangements of variable resistances for reading each chromaticity co-ordinate. The colorimeter may be used in checking the chromaticities of fluorescent lamps and includes three photo-cells X, Y, Z e.g. selenium cells each arranged to have a specific spectral sensitivity by use of a corresponding colour filter, which may be coloured glass or an interference filter wedge. The photo-cells can be switched individually, or all three together, into the colorimeter circuit by means of a fourway switch 11. In position I, for example, cell X is connected to the slide contacts of its particular arrangement of variable resistors 13, 14 while in position IV, all three cells are connected to the common end points of the resistance arrangements. Initial zeroing of the centre-zero galvanometer 21 is accomplished with the switch in position IV, by balancing the total current from the cells with the auxiliary current from a battery 19, by adjustment of variable resistor 20. Thus when any one of the cells is switched into circuit, the galvanometer is rezeroed by movement of the sliders along the particular resistance arrangement. The particular chromaticity co-ordinate is read off as the ratio of the resistance between the slide points to the resistance between the end points of the resistance arrangement. The coordinate Values may be preset on the variable resistance by previous positioning of the sliders, and deviations from these values read off as deflections of the galvanometer which has previously been calibrated. Further variable resistance arrangements are possible e.g. Fig. 3 (not shown). Various exemplary values for the variable resistances, which may be banks of equal resistors, are given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16290/64A GB1063023A (en) | 1964-04-20 | 1964-04-20 | Colorimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16290/64A GB1063023A (en) | 1964-04-20 | 1964-04-20 | Colorimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1063023A true GB1063023A (en) | 1967-03-22 |
Family
ID=10074659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16290/64A Expired GB1063023A (en) | 1964-04-20 | 1964-04-20 | Colorimeter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1063023A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183824A (en) * | 1985-11-25 | 1987-06-10 | Univ Liverpool | Colour quantification system for precise measurement of parameters inducing colour changes |
| US4822999A (en) * | 1986-05-01 | 1989-04-18 | Parr David T | Apparatus and method for detecting movement of an object |
-
1964
- 1964-04-20 GB GB16290/64A patent/GB1063023A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183824A (en) * | 1985-11-25 | 1987-06-10 | Univ Liverpool | Colour quantification system for precise measurement of parameters inducing colour changes |
| GB2183824B (en) * | 1985-11-25 | 1990-07-18 | Univ Liverpool | Apparatus and method for monitoring a variable parameter using a colour quantification system |
| US4822999A (en) * | 1986-05-01 | 1989-04-18 | Parr David T | Apparatus and method for detecting movement of an object |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3003388A (en) | Color difference measuring instrument | |
| US5171091A (en) | Temperature measuring circuit | |
| US2874354A (en) | Calibrating circuit for current measuring systems | |
| US3783275A (en) | Apparatus for the optical-electrical scanning of a drawing having a large number of points of different colors | |
| US2064517A (en) | Photoelectric cell circuit | |
| GB1063023A (en) | Colorimeter | |
| US2891438A (en) | Photoelectric photometer having compensating means for line voltage fluctuations | |
| GB1009049A (en) | Improvements in or relating to circuit controlling devices | |
| GB1263673A (en) | Improvements in or relating to resistance bridge circuits | |
| US3529893A (en) | Photometer with bridge circuit | |
| US4157494A (en) | Controlled multidigit resistance box | |
| US3443215A (en) | Impedance measuring bridge with voltage divider providing constant source impedance to bridge | |
| US2024275A (en) | Potentiometer device | |
| US2973473A (en) | Transconductance test circuit | |
| GB1086749A (en) | Improvements in and relating to resistance testers | |
| GB963029A (en) | Spectral flame analysis and recording apparatus and temperature compensating means therefor | |
| Barnes | A Direct‐Reading Photoelectric Colorimeter | |
| US2359779A (en) | Ohmmeter | |
| US3297939A (en) | Direct reading potentiometer | |
| GB675969A (en) | Improvements relating to null methods of electrical measurement | |
| GB860755A (en) | Improvements in or relating to apparatus for measuring changes in electrical resistance | |
| Projector et al. | An Improved``Zero‐Resistance''Circuit for Photo‐Cell Photometry | |
| GB733597A (en) | Multiple scale test instrument | |
| SU593157A1 (en) | Low-resistance dc potentiometer | |
| SU102798A1 (en) | Photoelectric colorimeter |