JPS57166532A - Color separating method - Google Patents
Color separating methodInfo
- Publication number
- JPS57166532A JPS57166532A JP5373181A JP5373181A JPS57166532A JP S57166532 A JPS57166532 A JP S57166532A JP 5373181 A JP5373181 A JP 5373181A JP 5373181 A JP5373181 A JP 5373181A JP S57166532 A JPS57166532 A JP S57166532A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- color
- narrow
- variable wavelength
- concentrated
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 239000003086 colorant Substances 0.000 abstract 1
- 238000009826 distribution Methods 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
Abstract
PURPOSE:To make distinct color discrimination for resembling color groups possible by providing a variable wavelength filter in an optical path, and selecting the respective component peak wavelengths and half-amplitude levels of three color components arbitrarily thereby segmenting the distrubutions of narrow wavelength ranges. CONSTITUTION:A variable wavelength filter is provided to an optical path, and the respective component peak wavelengths and half-amplitude widths of three color components are selected arbitrarily with this filter, whereby colors are separated. For example, the light irradiated from a light source 1 is reflected by a detection object 2, and is put into a photodetector 4 via a variable wavelength filter 3. The filter 3 changes the selection wavelength of the light transmitted therethrough according to the change in the signal frequency of the AC voltage to be applied thereto by a driving circuit 5. When the color distributions of the detection object are concentrated in a narrow range, three peaak densitives are concentrated within a narrow range and the half amplitude levels are selected at narrow wavelengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5373181A JPS57166532A (en) | 1981-04-08 | 1981-04-08 | Color separating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5373181A JPS57166532A (en) | 1981-04-08 | 1981-04-08 | Color separating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57166532A true JPS57166532A (en) | 1982-10-14 |
Family
ID=12950969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5373181A Pending JPS57166532A (en) | 1981-04-08 | 1981-04-08 | Color separating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57166532A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175697A (en) * | 1986-06-02 | 1992-12-29 | Minolta Camera Kabushiki Kaisha | Spectrophotometer for accurately measuring light intensity in a specific wavelength region |
-
1981
- 1981-04-08 JP JP5373181A patent/JPS57166532A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175697A (en) * | 1986-06-02 | 1992-12-29 | Minolta Camera Kabushiki Kaisha | Spectrophotometer for accurately measuring light intensity in a specific wavelength region |
| US5305233A (en) * | 1986-06-02 | 1994-04-19 | Minolta Camera Kabushiki Kaisha | Spectrophotometer for accurately measuring light intensity in a specific wavelength region |
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