CN109682472A - Dome light source - Google Patents
Dome light source Download PDFInfo
- Publication number
- CN109682472A CN109682472A CN201710979682.9A CN201710979682A CN109682472A CN 109682472 A CN109682472 A CN 109682472A CN 201710979682 A CN201710979682 A CN 201710979682A CN 109682472 A CN109682472 A CN 109682472A
- Authority
- CN
- China
- Prior art keywords
- light source
- temperature
- diffusing panel
- cooling fin
- arch face
- 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
- 239000002245 particle Substances 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 244000144985 peep Species 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009897 systematic effect Effects 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 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
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The embodiment provides a kind of dome light source, it can solve the problems, such as that prior art light source influences measurement effect.Dome light source includes: particle board；Temperature sensor；Arch face diffusing panel；Cooling fin；Wherein, arch face diffusing panel is arch, is equipped with cooling fin on the outside of two sides below；Particle board is mounted below arch face diffusing panel on the cooling fin of two sides, and light is uniformly reflexed to the testee surface below light source by arch face diffusing panel after shining；Temperature sensor is mounted below arch face diffusing panel and is only installed every arch face diffusing panel on the cooling fin of two sides with particle board, guarantees the temperature for accurately obtaining light source particle board environment.The dome light source working temperature of the embodiment of the present invention is constant, ensure that the stability of systematic survey environment.
Description
Technical field
The present invention relates to a kind of light source more particularly to a kind of dome light sources.
Background technique
It is higher and higher to the quality requirement of color on printed matter at present in printing industry, in order to evaluate color on printed matter
Quality, it usually needs color on printed matter is measured, is compared, conventional color measurement generally use color difference meter, light splitting light
Degree meter etc..When conventional color measurement can only spot measurement, can only once measure a diameter be 20mm within region, and measure
Rate is lower, and one-shot measurement needs at least 1 second or more time；In addition, the contact type measurement in conventional color measurement, measurement
When need to be likely to result in the damage to printed matter with instrument contacts printed matter.
Due to the diversification of printed matter material, such as laser paper, gold and silver paper jam, grey art post paperboard, work as class in the prior art
As strip source when being used for multispectral color measurement system, although such strip source has that collect camera enough
RGB image information, the RGB image information are used to be converted into the face of CIE (International Commission on Illumination) 1976L*a*b* color space
Chromatic number is according to progress color measuring.But because it is anti-by force to will receive product surface when measuring laser paper and gold and silver paper jam for strip source
The influence of light will appear light beam effect in imaging, influence color measuring result.
In addition, radium-shine due to paper is unevenly distributed when using strip source, cause to will appear in image when imaging bright
The light beam effect of blackening；And the radium-shine distribution of printed matter is again inconsistent, causes to be easy the influence by light beam when measurement.And gold and silver
Paper jam is easy, silver layer gold-plated by paper surface unevenly and paper formation situation is influenced.
Summary of the invention
The embodiment provides a kind of dome light sources, and can solve prior art light source influences asking for measurement effect
Topic.
The embodiment provides a kind of dome light sources, comprising: particle board；Temperature sensor；Arch face diffusing panel；It dissipates
Backing；Wherein, arch face diffusing panel is arch, is equipped with cooling fin on the outside of two sides below；Particle board is mounted on arch face diffusion
Light is uniformly reflexed to below plate on the cooling fin of two sides, after shining by arch face diffusing panel the testee below light source
Surface；Temperature sensor is mounted below arch face diffusing panel on the cooling fin of two sides and only carries out every arch face diffusing panel with particle board
Installation, guarantees the temperature for accurately obtaining light source particle board environment.
It is separately installed with an exhaust fan around each cooling fin, to guarantee stable control light-source temperature.
The dome light source further includes power-supply controller of electric, and light source at work, by power-supply controller of electric carries out a little light source
Bright, closing, for the temperature of light source to be arranged；After light source is opened, constantly it can shine and generate heat, temperature sensor in real time will
Light-source temperature feeds back to power-supply controller of electric, and after light-source temperature reaches the temperature of setting, controller controls fan and starts to work, right
Light source radiates；After temperature is lower than setting temperature, fan stops working.
The dome light source further includes peep hole, obtains the color of testee by peep hole for camera.
The D50 light source that the spatial distribution of the light source particle is near the mark.
The dome light source of the embodiment of the present invention has temperature control system, and light source working temperature is constant, ensure that system
Measure the stability of environment.Standard color as defined in the geometry imaging of the source particle board of dome light, spatial distribution, colour temperature and GIE
Measure geometry measurement and standard color measurement D50 light source are close.When being used in color measurement system, so that the measurement result of system
It is consistent with other standards color measurement instrument.
Detailed description of the invention
Fig. 1 shows the appearance of dome light source；
Fig. 2 shows the line A-A cross-sectional views along Fig. 1；
Fig. 3 shows the usage state diagram of the dome light source of the embodiment of the present invention；
Fig. 4 shows the spectral reflectance curve figure of the embodiment of the present invention and D50 is compared.
Specific embodiment
The present invention is understood and realized for the ease of persons skilled in the art, describes implementation of the invention now in conjunction with attached drawing
Example.
As shown in Figs. 1-2, the embodiment of the invention provides a kind of dome light source, the dome light source includes particle board I, temperature
Spend sensor K, arch face diffusing panel H, camera entrance mouth O, cooling fin J, fan L and power-supply controller of electric.Particle board I is mounted on arch face
It below diffusing panel H on the cooling fin J of two sides, is used to shine, uniformly reflexes to light by arch face diffusing panel H after shining
Testee surface below light source.Temperature sensor K is mounted on the cooling fin J of two sides and particle board I is only diffused every arch face
Plate H is installed, and the temperature for accurately obtaining light source particle board I is guaranteed.One air draft is all respectively housed around the cooling fin J of two sides
Fan, guarantees stable control light-source temperature.Light source at work, is lighted light source by light source power controller, closes,
And the temperature of light source can be set.After light source is opened, constantly it can shine and generate heat, temperature sensor is in real time by light source temperature
Degree feed back to power-supply controller of electric, after light-source temperature reaches the temperature of setting, controller control fan start to work, to light source into
Row heat dissipation；After temperature is lower than setting temperature, fan stops working.It ensures that the temperature of light source working is constant in this way, ensure that
Color measurement system has stable measurement environment.
Such as Fig. 3, the dome light source further includes peep hole, obtains the color of testee by peep hole for camera,
The route that camera passes through peep hole to testee is observation optical path.Since arch face diffusing panel H carries out diffusing reflection illumination to product
On, the angle of observation optical path and normal is less than 10 °.Meet " diffusion/vertical (symbol d/0) " observation condition as defined in GIE
Geometry imaging requirements.If Fig. 4, drawing curve C are the spectral distribution graph that D50 standard color as defined in GIE measures light source, curve B
For the particle spectral distribution graph of light source of the present invention, as shown, the D50 that the spatial distribution of light source particle of the invention is near the mark
Light source.And the colour temperature of the particle board I in the present invention is that 5000K is consistent with standard D50 light source.Therefore, dome light source of the invention
It can ensure that camera can obtain enough image informations, convert L*a*b* colouring information for accurately carrying out RGB.
According to the present invention, geometry imaging arrangement of the present invention meets International Commission on Illumination (GIE) and is specified in color measuring
Geometry observation condition；Light source particle colour temperature provides the light source color temperature of D50 standard color observation close to GIE；Light source light spectrum is close
The spectrum of the light source of D50 standard color observation is provided in GIE；And light source has special temperature control system, to ensure that light
Source temperature is constant, keeps the stabilization of measurement environment.
According to the present invention, it is ensured that the stable measurement environment of color measurement system.So that the color established using this light source
Measuring system can allow camera to collect enough RGB image information, for being converted into CIE 1976L*a*b* color space
Color data carries out the measurement result that color measuring and other standards color measurement instrument are consistent.
According to the present invention, dome light source disclosed in the embodiment of the present invention is applicable to the full width based on multispectral camera
Face, high speed, non-contact measurement color measurement system.
The present invention is imaged measurement product under the premise of meeting GIE standard, using dome light source.Dome light source light
Line by arch face diffusing panel reflection after, it is smooth, be uniformly radiated on testee, by the effect of measured object surface reflection into
Row filters out, and obtains uniform imaging effect.
The embodiment of the present invention has distinctive temperature control system by dome light source, and light source working temperature is constant, protects
The stability of systematic survey environment is demonstrate,proved.Standard face as defined in the geometry imaging of light source particle board, spatial distribution, colour temperature and GIE
The measurement of color measure geometry and standard color measurement D50 light source are close.When being used in color measurement system, so that the measurement knot of system
Fruit and other standards color measurement instrument are consistent.
Although depicting the present invention by embodiment, it will be appreciated by the skilled addressee that of the invention not departing from
In the case where spirit and essence, so that it may make the present invention there are many deformation and variation, the scope of the present invention is by the attached claims
To limit.
Claims (5)
1. a kind of dome light source characterized by comprising particle board；Temperature sensor；Arch face diffusing panel；Cooling fin；
Wherein, arch face diffusing panel is arch, is equipped with cooling fin on the outside of two sides below；Particle board is mounted on arch face diffusing panel
Light is uniformly reflexed to on the cooling fin of lower section two sides, after shining by arch face diffusing panel the measured object body surface below light source
Face；Temperature sensor, which is mounted below arch face diffusing panel, is only pacified every arch face diffusing panel on the cooling fin of two sides with particle board
Dress, guarantees the temperature for accurately obtaining light source particle board environment.
2. dome light source according to claim 1, which is characterized in that be separately installed with a row around each cooling fin
Fan, to guarantee stable control light-source temperature.
3. dome light source according to claim 2, which is characterized in that the dome light source further includes power-supply controller of electric, light
Source at work, by power-supply controller of electric is lighted light source, is closed, for the temperature of light source to be arranged；After light source is opened,
Constantly it can shine and generate heat, light-source temperature is fed back to power-supply controller of electric in real time, reached in light-source temperature by temperature sensor
After the temperature of setting, controller controls fan and starts to work, and radiates to light source；After temperature is lower than setting temperature, fan
It stops working.
4. dome light source according to claim 1, which is characterized in that the dome light source further includes peep hole, is used for phase
Machine obtains the color of testee by peep hole.
5. dome light source according to claim 1, which is characterized in that the spatial distribution of the light source particle was near the mark
D50 light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710979682.9A CN109682472A (en) | 2017-10-19 | 2017-10-19 | Dome light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710979682.9A CN109682472A (en) | 2017-10-19 | 2017-10-19 | Dome light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109682472A true CN109682472A (en) | 2019-04-26 |
Family
ID=66184173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710979682.9A Pending CN109682472A (en) | 2017-10-19 | 2017-10-19 | Dome light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109682472A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004016829A1 (en) * | 2004-04-01 | 2005-11-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Determining the colour of opaque and transparent material, comprises taking one or more pictures using a camera, and analysing the colour |
| CN103411885A (en) * | 2013-07-18 | 2013-11-27 | 江苏大学 | Diffuse reflection illumination apparatus of multispectral imaging system |
| CN103940587A (en) * | 2013-01-21 | 2014-07-23 | 中国计量学院 | Quick measurement system for light source luminosity and chroma parameter angle distribution characteristics |
| CN105847640A (en) * | 2016-03-18 | 2016-08-10 | 上海众思电子设备有限公司 | Light source for multi-linear CCD camera |
| CN106053344A (en) * | 2016-05-10 | 2016-10-26 | 南京高恳特科技有限公司 | A hyperspectral image detection cabin provided with illumination compensation, a detector and a detecting method |
| CN106323987A (en) * | 2016-09-30 | 2017-01-11 | 厦门威芯泰科技有限公司 | Lighting source for detecting high-reflectivity surface defects |
| CN206114547U (en) * | 2016-09-30 | 2017-04-19 | 厦门威芯泰科技有限公司 | A source of illumination for detecting high reflection surface defect |
| CN207439545U (en) * | 2017-10-19 | 2018-06-01 | 红塔烟草(集团)有限责任公司 | Dome light source |
-
2017
- 2017-10-19 CN CN201710979682.9A patent/CN109682472A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004016829A1 (en) * | 2004-04-01 | 2005-11-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Determining the colour of opaque and transparent material, comprises taking one or more pictures using a camera, and analysing the colour |
| CN103940587A (en) * | 2013-01-21 | 2014-07-23 | 中国计量学院 | Quick measurement system for light source luminosity and chroma parameter angle distribution characteristics |
| CN103411885A (en) * | 2013-07-18 | 2013-11-27 | 江苏大学 | Diffuse reflection illumination apparatus of multispectral imaging system |
| CN105847640A (en) * | 2016-03-18 | 2016-08-10 | 上海众思电子设备有限公司 | Light source for multi-linear CCD camera |
| CN106053344A (en) * | 2016-05-10 | 2016-10-26 | 南京高恳特科技有限公司 | A hyperspectral image detection cabin provided with illumination compensation, a detector and a detecting method |
| CN106323987A (en) * | 2016-09-30 | 2017-01-11 | 厦门威芯泰科技有限公司 | Lighting source for detecting high-reflectivity surface defects |
| CN206114547U (en) * | 2016-09-30 | 2017-04-19 | 厦门威芯泰科技有限公司 | A source of illumination for detecting high reflection surface defect |
| CN207439545U (en) * | 2017-10-19 | 2018-06-01 | 红塔烟草(集团)有限责任公司 | Dome light source |
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