CN106989290A - A kind of high uniformity light source and its colour temperature and brightness adjusting method - Google Patents
A kind of high uniformity light source and its colour temperature and brightness adjusting method Download PDFInfo
- Publication number
- CN106989290A CN106989290A CN201710346128.7A CN201710346128A CN106989290A CN 106989290 A CN106989290 A CN 106989290A CN 201710346128 A CN201710346128 A CN 201710346128A CN 106989290 A CN106989290 A CN 106989290A
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- light source
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- colour temperature
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000003086 colorant Substances 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000035807 sensation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to detection lighting source technical field, a kind of high uniformity light source and its colour temperature and brightness adjusting method are specifically disclosed.High uniformity light source includes the LED of two or more different-colours, and the LED of different-colour is arranged in equidistant staggered cross mode, and the spacing of adjacent LED lamp is equal with the spacing of adjacent LED lamp in each row in every a line；The LED lamp source of different-colour is constituted light source by the present invention using equidistant staggered cross arrangement mode, realizes the high uniformity of light source；In actual applications, colour temperature and the uniformity of brightness may be up to more than 98%.
Description
Technical field
The present invention relates to detection lighting source technical field, a kind of high uniformity light source and its colour temperature are specifically disclosed and bright
Spend adjusting method.
Background technology
Social now, all kinds of electronics applications are detected or machine in industrial production and life in electronic product light sensation
It is required to use lighting source, requirement of the current electronics industry to Product checking precision in device vision-based detection and in many occasions
More and more higher, therefore lighting source used in it also turns into one of high-end precision instrument, its indices is required to very high.
Wherein, the colour rendering index of light source, uniformity are especially paid close attention in the industry；Meet the uniform of detection requirement to reach
Property, there are luminaire designers to attempt to carry out light source various topology layouts to reach high uniformity at present, such as, set in substrate
Void region adds semicircle case etc. in the outside of LED, but the actual effect that these schemes are obtained is very limited.
Therefore this area is needed badly and a kind of can obtain the technical scheme of high uniformity in actual applications at present.
The content of the invention
In order to overcome shortcoming and defect present in prior art, it is an object of the invention to provide a kind of high uniformity
Light source, in actual applications, the uniformity of colour temperature and brightness may be up to more than 98%.
To achieve the above object, the present invention uses following scheme.
A kind of light source of high uniformity, includes the LED of two or more different-colours, the LED of different-colour is between grade
Arranged away from staggered cross mode, the spacing of adjacent LED lamp is equal with the spacing of adjacent LED lamp in each row in every a line.
In order to be further ensured that high uniformity, LED front end is provided with diffuser plate.
Further, light source includes the framework for being used to carry LED, and the inner-wall spraying of framework has nanometer reflection coating.
In addition, light source includes being additionally provided with light intensity sensor in the framework for being used to carry LED, framework, source outer is set
There is host computer, host computer is electrically connected with light intensity sensor.
Specifically, an illumination standard value is preset by host computer, light intensity sensor detects the intensity of illumination of light source, once
Intensity of illumination is detected less than illumination standard value, light intensity sensor feeds back to host computer, host computer increases electric current to carry out light intensity
Repairing.
Preferably, host computer is communicatively coupled with light intensity sensor by USB3.0 communication protocols.
Present invention also offers the colour temperature of above-mentioned light source and brightness adjusting method, it is specially：
Accounting of the different-colour LED in light source color temperature rank is set, by light source color temperature rank and light-source brightness rank one by one
It is correspondingly arranged, colour temperature or the brightness of different LEDs is adjusted according to the colour temperature rank accounting of different-colour LED.
Preferably, the LED of different-colour is controlled using constant current mode.
Beneficial effects of the present invention：The LED lamp source of different-colour is constituted into light using equidistant staggered cross arrangement mode
Source, realizes the high uniformity of light source；In actual applications, colour temperature and the uniformity of brightness may be up to more than 98%.
Brief description of the drawings
Fig. 1 is the LED lamp source arrangement schematic diagram of the embodiment of the present invention one.
Fig. 2 is the LED colour temperature grade setting schematic diagram of the embodiment of the present invention.
Fig. 3 is the LED colour temperature and brightness regulation schematic diagram of the embodiment of the present invention.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and accompanying drawing
It is bright, the content that embodiment is referred to not limitation of the invention.
Embodiment one
The present embodiment provides a kind of high uniformity light source；In the present embodiment, light is constituted using the LED of two kinds of different-colours
Source, for convenience of explanation, the present embodiment select the LED of 2700k and 6200k colour temperatures；The LED of both colour temperatures is used etc.
Spacing staggered cross arrangement mode constitutes light source, for details, reference can be made to Fig. 1.
In Fig. 1, square frame A represents the LED of 2700k colour temperatures, and square frame B represents the LED of 6200k colour temperatures, wherein, same to a line
Adjacent A between spacing, the spacing between the adjacent A of same row, the phase with spacing and same row between the adjacent B of a line
Spacing between adjacent B is equal, i.e. spacing A1=A2=B1=B2 in Fig. 1.So arrangement, can realize light-source brightness and colour temperature
High uniformity.
On this basis, the LED front end of light source is provided with diffuser plate, incident light is fully scattered, realize uniform
Radiation response；It is preferred that high uniformity diffuser plate, is further ensured that the high uniformity of brightness and colour temperature.
Further, in the inner-wall spraying nanometer reflection coating for the framework for carrying LED lamp source so that LED light line is carried out not
With the diffusing reflection of angle, so as to ensure the high uniformity of light-source brightness and colour temperature.
By checking, in actual applications, the colour temperature of light source and the uniformity of brightness may be up to more than 98%, significantly larger than
Ordinary light source, the uniformity of ordinary light source only has 70% or so.The light source of the present invention can be used for the production of high request because of its high uniformity
In product, such as detected for the light sensation of electronic product camera.
In the present embodiment, light intensity sensor is additionally provided with the framework of carrying LED lamp source, source outer is provided with upper
Machine, host computer is electrically connected with light intensity sensor.For light source, an illumination standard value can be preset by host computer, passed through
Light intensity sensor detects the intensity of illumination of light source, once detecting light source decay, i.e. intensity of illumination is less than default illumination standard
Value, light intensity sensor is fed back to host computer, then host computer can take increase electric current to carry out light intensity repairing, realize light
Automatic compensation when source is decayed, so as to realize the accurate feedback and calibration correction of light source, it is ensured that the stability of light source, and then is ensured
Uniformity.
In order to realize fast setting and feedback, host computer carries out communication link with light intensity sensor by USB3.0 communication protocols
Connect.
The present embodiment additionally provides a kind of method for adjusting light source color temperature and brightness.In the present embodiment, light source uses two
The LED of colour temperature is planted, and colour temperature, brightness are carried out to the LED of above two colour temperature by host computer and is matched, so as to realize color
Temperature, brightness is adjustable.
Specifically, the present embodiment uses the low colour temperatures of 2700k（That is, the A colour temperatures in Fig. 2）With 6200k high color temperatures（That is, in Fig. 2
B colour temperatures）LED, in practical operation, light source color temperature can be divided into 1000 grades, specifically, by low colour temperature LED
It is divided into 1000 grades, such as 0 ~ 999；High color temperature LED is also accordingly divided into 1000 grades, such as 1 ~ 1000；And such as
Shown in Fig. 2, the two is correspondingly arranged, low 0 grade of colour temperature is corresponding with 1000 grades of high color temperature, low 1 grade of colour temperature is right with 999 grades of high color temperature
Should ... low 999 grades of colour temperature is corresponding with 1 grade of high color temperature；Namely pre-set height colour temperature LED B and A are in light source color temperature
The corresponding proportion respectively accounted in rank, and obtain light source color temperature C0, C1, C2, C3 ... C999 of appropriate level, the light of appropriate level
The occurrence of source colour temperature can be drawn by color illumination apparatus measures.
Set after light source color temperature rank, the brightness settings of the colour temperature of appropriate level and corresponding level are good, such as, and C3 colors
The corresponding brightness settings of temperature are 20000 grades, and the light source of C3 colour temperature ranks is corresponding to be：A colour temperatures LED is 3 grades, B colour temperature LEDs
For 997 grades, then the brightness of A colour temperature LEDs is 3/1000*20000=60；The brightness of B colour temperature LEDs is 997/1000*
20000=19940.
That is, accounting of the pre-set different-colour LED in light source color temperature grade, then choose light source colour
After warm grade, you can the colour temperature of different-colour LED is adjusted according to accounting, realize that light source color temperature is adjusted；Moreover, because brightness
Grade is corresponded with color temperature levels, then chosen after light-source brightness grade, equally can be according to different-colour LED in light source
Accounting in color temperature levels adjusts the brightness of different LEDs respectively, and causes total brightness to reach desired value, so as to realize light source
Brightness regulation；Finally realize that light source color temperature, brightness are adjustable.
In order to ensure light source color temperature, brightness regulation high accuracy, the present embodiment controls different-colour using constant current mode
LED.Isobarically Control pattern is easily caused unstable, low precision, relative to constant voltage mode, and current constant control pattern more can guarantee that
Stably high accuracy regulation light source color temperature and brightness.
Those skilled in the art can use the LED of multiple different-colours according to real needs, and be set by host computer
The rank of varying number, as shown in figure 3, being set on demand so as to realize, is flexibly applied to various occasions, and really realize light source colour
Temperature and brightness are adjustable.
Embodiment two
The difference of embodiment two and embodiment one is：The present embodiment constitutes light using the LED of three kinds of different-colours
Source, and the LED of three kinds of colour temperatures is constituted into light source using equidistant staggered cross arrangement mode, used similar to Fig. 1, Fig. 1
ABABAB staggered cross arrangement mode, then the LED of three kinds of colour temperatures is then using ABCABCABC staggered cross arrangement side
Formula.If using the LED of more than four kinds colour temperatures, its arrangement mode is by that analogy.
Remainder is identical with embodiment one, will not be repeated here.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, will change in specific embodiments and applications, and this specification content should not be construed as to the present invention
Limitation.
Claims (8)
1. a kind of high uniformity light source, it is characterised in that：Include the LED of two or more different-colours, the LED of different-colour
Arranged in equidistant staggered cross mode, the spacing and the spacing phase of adjacent LED lamp in each row of adjacent LED lamp in every a line
Deng.
2. high uniformity light source according to claim 1, it is characterised in that：LED front end is provided with diffuser plate.
3. high uniformity light source according to claim 1, it is characterised in that：Light source includes the framework for being used to carry LED,
The inner-wall spraying of framework has nanometer reflection coating.
4. high uniformity light source according to claim 1, it is characterised in that：Light source includes the framework for being used to carry LED,
Light intensity sensor is additionally provided with framework, source outer is provided with host computer, and host computer is electrically connected with light intensity sensor.
5. high uniformity light source according to claim 4, it is characterised in that：One illumination standard is preset by host computer
Value, light intensity sensor detects the intensity of illumination of light source, once detecting intensity of illumination less than illumination standard value, light intensity sensor is anti-
Feed host computer, host computer increases electric current to carry out light intensity repairing.
6. high uniformity light source according to claim 4, it is characterised in that：Host computer passes through USB3.0 with light intensity sensor
Communication protocol is communicatively coupled.
7. colour temperature and brightness adjusting method based on the light source described in claim any one of 1-6, it is characterised in that：Setting is different
Accounting of the colour temperature LED in light source color temperature rank, light source color temperature rank and light-source brightness rank are corresponded and set, according to
The colour temperature rank accounting of different-colour LED adjusts colour temperature or the brightness of different LEDs.
8. colour temperature according to claim 7 and brightness adjusting method, it is characterised in that：Controlled using constant current mode not homochromy
The LED of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346128.7A CN106989290A (en) | 2017-05-17 | 2017-05-17 | A kind of high uniformity light source and its colour temperature and brightness adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710346128.7A CN106989290A (en) | 2017-05-17 | 2017-05-17 | A kind of high uniformity light source and its colour temperature and brightness adjusting method |
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| CN106989290A true CN106989290A (en) | 2017-07-28 |
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| CN201710346128.7A Pending CN106989290A (en) | 2017-05-17 | 2017-05-17 | A kind of high uniformity light source and its colour temperature and brightness adjusting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108040391A (en) * | 2017-12-01 | 2018-05-15 | 艾欧创想智能科技（武汉）有限公司 | Adjust method, road lamp system and the storage medium of the street lamp colour temperature in road lamp system |
| CN110987370A (en) * | 2019-08-13 | 2020-04-10 | 中山市华南理工大学现代产业技术研究院 | Testing method of five-surface light-emitting CSP LED |
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| CN110987370A (en) * | 2019-08-13 | 2020-04-10 | 中山市华南理工大学现代产业技术研究院 | Testing method of five-surface light-emitting CSP LED |
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Application publication date: 20170728 |
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