CN101801142B - Method for obtaining high color rendering and color temperature adjustable white light by combining warm white light LED with red light LED, green light LED, and blue light LED - Google Patents
Method for obtaining high color rendering and color temperature adjustable white light by combining warm white light LED with red light LED, green light LED, and blue light LED Download PDFInfo
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- CN101801142B CN101801142B CN2010101325267A CN201010132526A CN101801142B CN 101801142 B CN101801142 B CN 101801142B CN 2010101325267 A CN2010101325267 A CN 2010101325267A CN 201010132526 A CN201010132526 A CN 201010132526A CN 101801142 B CN101801142 B CN 101801142B
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Abstract
The invention relates to a method for obtaining high color rendering and color temperature adjustable white light by combining a warm white light LED with a red light LED, a green light LED, and a blue light LED. The method is implemented by the warm white light LED, the red light LED, the green light LED, the blue light LED, and a control circuit, wherein the control circuit provides different drive current to the warm white light LED, the red light LED, the green light LED and the blue light LED; and warm white light, red light, green light and blue light of different light intensities are generated so that the white light of different color temperatures is formed and the white light of which color temperature and luminous flux can be adjusted and both the general color rendering index Ra and the special color rendering index R9 are over 90 in the color temperature range of between 2,700 and 6,500K can be obtained.
Description
Technical field
The present invention relates to LED white light technical field, particularly relate to a kind of warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain.
Background technology
At present with LED, realize the following several scheme of generally having of adjustable color temperature white light:
1, adopt red-light LED, green light LED and blue-ray LED composition independency loop, reach the white light of different-colour by the drive current of regulating each loop, the color rendering of its white light is generally all poor.
2, adopt the blue-light LED chip excitated fluorescent powder to produce the cold white light of high color temperature and red LED chip combination, or the cold white light LEDs of high color temperature and red-light LED combination, reach the white light of different-colour by the drive current of regulating red-light LED (chip), in 2700K～6500K reference color temperature, the color rendering of its white light is still not high.Realize the essential fluorescent material proportioning of adjusting of high-color rendering in 2700K～6500K reference color temperature, therefore can not realize the high-color rendering white-light of continuous adjustable color temperature.
3, add again the green light LED chip on the basis of scheme 2, but its color rendering index Ra still can not reach more than 90 in 2700K～6500K scope, its special colour rendering index R
9still lower.
4, adopt blue-light LED chip to excite red and green fluorescence powder to add the yellow light LED chip portfolio, obtain the white light of different-colour by the drive current of regulating the yellow light LED chip, its color rendering also can only reach 80 left and right.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain, make white light can carry out colour temperature adjusting and the logical adjusting of light, general colour rendering index Ra and special colour rendering index R in colour temperature 2700K～6500K scope
9all be greater than 90.
The technical solution adopted for the present invention to solve the technical problems is: a kind of warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain is provided, comprises the following steps:
(1), according to the relative spectral power distribution of warm white LED, red-light LED, green light LED and blue-ray LED, determine the logical percentage of light of warm white, ruddiness, green glow and blue light under required LED combination white light reference color temperature by analogue simulation;
(2) select warm white LED to form the warm white LED loop, and connect with the warm white control circuit; Select red-light LED to form the red-light LED loop, and connect with the ruddiness control circuit; Select green light LED to form the green light LED loop, and connect with the green glow control circuit; Select blue-ray LED to form the blue-ray LED loop, and connect with the blue light control circuit;
(3) relation of and drive current logical according to the light in warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop, determine the drive current in warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop;
(4) by corresponding control circuit, provide definite drive current to warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop respectively, thus the acquisition high-color rendering white-light under required colour temperature.
The described peak wavelength that warms up the red-light LED described in the method that adds in vain red, green and blue LED combination acquisition white light with high color development and adjustable color temperature is 620～640nm; The peak wavelength of described green light LED is 510～530nm; The peak wavelength of described blue-ray LED is 450～470nm.
The described warm peak wavelength that adds in vain the red-light LED described in the method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature is 625～635nm more preferably; The peak wavelength of described green light LED is 515～525nm more preferably; The peak wavelength of described blue-ray LED is 455～460nm more preferably.
The described colour temperature that warms up the warm white LED described in the method that adds in vain red, green and blue LED combination acquisition white light with high color development and adjustable color temperature is 2800K～3500K, and wherein the relative spectral intensity of blue light composition is 0.3～0.65.
The described warm relative spectral intensity that adds in vain the blue light composition described in the method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature more preferably 0.45～0.55.
It is described that warm to add in vain the required LED combination white light reference color temperature described in the method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature be 2700K～6500K.
Describedly warm add in vain the high-color rendering white-light described in the method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature and undertaken by described warm white control circuit, ruddiness control circuit, green glow control circuit, blue light control circuit that light is logical to be regulated and colour temperature is regulated.
Describedly warm add in vain the warm white LED loop described in the method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature and carry out serial or parallel connection or string mixing by one or at least two warm white LEDs and connect to form; Described red-light LED loop is carried out serial or parallel connection or string mixing by one or at least two red-light LEDs and is connected to form; Described green light LED loop is carried out serial or parallel connection or string mixing by one or at least two green light LEDs and is connected to form; Described blue-ray LED loop is carried out serial or parallel connection or string mixing by one or at least two blue-ray LEDs and is connected to form.
Described warm several logical according to the described required LED combination white light light size that adds in vain warm white LED, red-light LED, green light LED and the blue-ray LED described in the method that the green LED combination of reddish yellow obtains white light with high color development and adjustable color temperature and single warm white LED, red-light LED, green light LED and blue-ray LEDs are determined the maximum light of rated power is logical.
Beneficial effect
Owing to having adopted above-mentioned technical scheme, the present invention compared with prior art, there is following advantage and good effect: utilize Colored light mixing addition principle and color rendering properties of light source evaluation method, by warm white LED, red-light LED, green light LED and blue-ray LED combination are carried out to computer simulation, found and met in 2700K～6500K reference color temperature, white light general colour rendering index Ra and special colour rendering index R
9all be greater than 90 warm white and add the red, green and blue LED combination, determined the scope of the relative spectral intensity of the reference color temperature of warm white LED and blue light composition, and the peak wavelength scope of red-light LED, green light LED and blue-ray LED, and can determine that required LED combines the drive current in warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop under the white light colour temperature, therefore, control and implement conveniently.
The accompanying drawing explanation
Fig. 1 is control circuit of the present invention and LED loop connection diagram;
Fig. 2 is the relative spectral power distribution schematic diagram of warm white LED;
Fig. 3 is the relative spectral power distribution schematic diagram of red-light LED;
Fig. 4 is the relative spectral power distribution schematic diagram of green light LED;
Fig. 5 is the relative spectral power distribution schematic diagram of blue-ray LED.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only are not used in and limit the scope of the invention for the present invention is described.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiments of the present invention relate to a kind of warm method that the green LED combination of reddish yellow obtains white light with high color development and adjustable color temperature that adds in vain, the spectral distribution of warm white LED, red-light LED, green light LED and blue-ray LED that adopted the theoretical model analogue simulation, and spectral distribution, light is logical and the relation of power and drive current variations; Utilize Colored light mixing addition principle and color rendering properties of light source evaluation method, by warm white LED, red-light LED, green light LED and blue-ray LED combination are carried out to computer simulation, found and met in 2700K～6500K reference color temperature, white light general colour rendering index Ra and special colour rendering index R
9all be greater than 90 warm white and add the red, green and blue LED combination, and determined the scope of the relative spectral intensity of the reference color temperature of warm white LED and blue light composition, and the peak wavelength scope of red-light LED, green light LED and blue-ray LED.The light fixture that utilizes the present invention to make can be suitable for lighting source that need to be from cold white to the freely regulated specific (special) requirements of warm white by season, environment, atmosphere, hobby etc., also can be suitable as the general lighting light source.
The embodiment of the present invention is comprised of the green light LED of the red-light LED of the warm white LED of 3 power 1W, 1 power 1W, 1 power 1W and the blue-ray LED of 1 power 1W and control circuit separately, and its annexation as shown in Figure 1.
The colour temperature of warm white LED under drive current 350mA is 3183K, and as shown in Figure 2, its blue light composition relative spectral intensity is about 0.60 as we know from the figure in its relative spectral power distribution; The peak wavelength of red-light LED under drive current 350mA is 634.1nm, and its relative spectral power distribution as shown in Figure 3; The peak wavelength of green light LED under drive current 350mA is 520.2nm, and its relative spectral power distribution as shown in Figure 4; The peak wavelength of blue-ray LED under drive current 350mA is 455.5nm, and its relative spectral power distribution as shown in Figure 5.
Relative spectral power distribution according to warm white LED, red-light LED, green light LED and blue-ray LED, and the light under drive current 350mA is logical, determine the required logical ratio of light of warm white, ruddiness, green glow and blue light difference in 2700K～6500K reference color temperature by simulation calculation, then, lead to or rated power according to the light of required LED combination white light, determine that respectively the required granule number of warm white LED, red-light LED, green light LED and blue-ray LED forms independent loop separately.In the present embodiment, the granule number of warm white LED, red-light LED, green light LED and blue-ray LED is according under rated power 3W condition, adopts above-mentioned specific implementation method and determines.Wherein, the warm white LED loop is in series by 3 warm white LEDs.
The relation of and drive current (or power) logical according to the light of warm white LED, red-light LED, green light LED and blue-ray LED, tentatively determine the drive current of warm white LED, red-light LED, green light LED and blue-ray LED.Because the relative spectral power distribution of LED changes with drive current, therefore, the drive current of warm white LED, red-light LED, green light LED and blue-ray LED also will be revised by analogue simulation, finally determines at the light logical (or rated power) of required LED combination white light and the drive current of warm white LED, red-light LED, green light LED and blue-ray LED under different LED combination white light colour temperature.
The warm white LED loop provides given drive current by the warm white control circuit, the red-light LED loop provides given drive current by the ruddiness control circuit, the green light LED loop provides given drive current by the green glow control circuit, and the blue-ray LED loop provides given drive current by the blue light control circuit.Control circuit and warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop connection diagram are as shown in Figure 1.
According to above-mentioned specific implementation method, the light of the warm white that in the embodiment of the present invention, analogue simulation obtains, ruddiness, green glow and blue light is logical as shown in table 1:
Table 1
According to above-mentioned specific implementation method, the drive current of the warm white LED that in the embodiment of the present invention, analogue simulation obtains, red-light LED, green light LED and blue-ray LED is as shown in table 2:
Table 2
Colour temperature (Tc), chromaticity coordinates (u, v), general colour rendering index (Ra), the special colour rendering index (R of the LED combination white light of 2700K, the 3000K that the embodiment of the present invention obtains by above-mentioned drive current, 3500K, 4000K, 4500K, 5000K, 5700K, 6500K
9), the average special colour rendering index of 9-15 sample and light logical as shown in table 3:
Table 3
As can be seen here, the white light that the present invention obtains is in the reference color temperature of 2700K～6500K, general colour rendering index Ra reaches more than 90, average special colour rendering index reaches 88 left and right, the white light of its acquisition is described, not only very good to the color rendering of medium chroma, and also very good to the color rendering of high chroma.Special colour rendering index R particularly
9, the LED white light of realizing at present is generally all lower, and the embodiment of the present invention reaches more than 90, shows more outstandingly, has solved current LED white light at special colour rendering index R
9the difficult problem that upper performance is poor.The present invention also can carry out the logical adjusting of light and colour temperature adjusting to resulting LED white light by ruddiness control circuit, gold-tinted control circuit, green glow control circuit, blue light control circuit.So the development that LED is from now on entered to high colour developing lighting requirement occasion and general room illumination is significant.
Adopt patented method of the present invention, warm add in vain height colour developing that the red, green and blue LED combination realizes fixedly colour temperature (2700～6500K) white light also be subject to this patent protection.Adopt patented method of the present invention, for single the white light with high color development and adjustable color temperature LED that is added by a blue-light LED chip that fluorescent material produces that warm white, blue-light LED chip, red LED chip, green light LED chip portfolio encapsulation manufacture or single high colour developing fixedly color temperature white light LED also be subject to this patent protection.The white-light illuminating light fixture, white-light illuminating equipment and the white-light emitting body that adopt patented method of the present invention to make all are subject to this patent protection.
Claims (7)
1. a warm method that adds in vain red, green and blue LED combination acquisition white light with high color development and adjustable color temperature, is characterized in that, comprises the following steps:
(1), according to the relative spectral power distribution of warm white LED, red-light LED, green light LED and blue-ray LED, determine the logical percentage of light of warm white, ruddiness, green glow and blue light under required LED combination white light reference color temperature by analogue simulation; The peak wavelength of described red-light LED is 620～640nm; The peak wavelength of described green light LED is 510～530nm; The peak wavelength of described blue-ray LED is 450～470nm; The colour temperature of described warm white LED is 2800K～3500K, and wherein the relative spectral intensity of blue light composition is 0.3～0.65;
(2) select warm white LED to form the warm white LED loop, and connect with the warm white control circuit; Select red-light LED to form the red-light LED loop, and connect with the ruddiness control circuit; Select green light LED to form the green light LED loop, and connect with the green glow control circuit; Select blue-ray LED to form the blue-ray LED loop, and connect with the blue light control circuit;
(3) relation of and drive current logical according to the light in warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop, determine the drive current in warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop;
(4) by corresponding control circuit, provide definite drive current to warm white LED loop, red-light LED loop, green light LED loop and blue-ray LED loop respectively, thereby obtain the high-color rendering white-light under required colour temperature.
2. the warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain according to claim 1, is characterized in that, the peak wavelength of described red-light LED is 625～635nm; The peak wavelength of described green light LED is 515～525nm; The peak wavelength of described blue-ray LED is 455～460nm.
3. the warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain according to claim 1, is characterized in that, the relative spectral intensity of described blue light composition is 0.45～0.55.
4. the warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain according to claim 1, is characterized in that, described required LED combination white light reference color temperature is 2700K～6500K.
5. the warm red, green and blue LED that adds in vain according to claim 1 combines the method that obtains white light with high color development and adjustable color temperature, it is characterized in that, described high-color rendering white-light carries out the logical adjusting of light by described warm white control circuit, ruddiness control circuit, green glow control circuit, blue light control circuit and colour temperature is regulated.
6. the warm method that the red, green and blue LED combination obtains white light with high color development and adjustable color temperature that adds in vain according to claim 1, is characterized in that, described warm white LED loop is carried out serial or parallel connection or string mixing by one or at least two warm white LEDs and connected to form; Described red-light LED loop is carried out serial or parallel connection or string mixing by one or at least two red-light LEDs and is connected to form; Described green light LED loop is carried out serial or parallel connection or string mixing by one or at least two green light LEDs and is connected to form; Described blue-ray LED loop is carried out serial or parallel connection or string mixing by one or at least two blue-ray LEDs and is connected to form.
7. the warm red, green and blue LED that adds in vain according to claim 6 combines the method that obtains white light with high color development and adjustable color temperature, it is characterized in that, several sizes logical according to described required LED combination white light light and single warm white LED, red-light LED, green light LED and the blue-ray LED of described warm white LED, red-light LED, green light LED and blue-ray LED lead to determine at the maximum light of rated power.
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| CN102541950A (en) * | 2010-12-31 | 2012-07-04 | 上海广茂达光艺科技股份有限公司 | Method and device for establishing color temperature database of combined light and method for realizing combined light |
| CN102128432A (en) * | 2011-03-28 | 2011-07-20 | 重庆邦桥科技有限公司 | Medical illuminating LED (Light-Emitting Diode) with continuously adjustable color temperature |
| CN102316648B (en) * | 2011-09-15 | 2014-08-13 | 四川新力光源股份有限公司 | Light-emitting diode (LED) illuminating device |
| US8680544B2 (en) * | 2011-11-30 | 2014-03-25 | Tsmc Solid State Lighting Ltd. | Cost-effective LED lighting instrument with good light output uniformity |
| CN103090238B (en) * | 2013-02-05 | 2014-11-05 | 浙江大学 | Light emitting diode (LED) light source illumination method and device with color temperature simulating natural light change along with time |
| CN104633499B (en) * | 2015-02-04 | 2016-10-05 | 余建华 | The LED light source module of a kind of high color rendering index (CRI) and LED lamp |
| CN104633595B (en) * | 2015-02-09 | 2016-02-24 | 常州千明智能照明科技有限公司 | A kind of with the LED lamp of high color rendering index (CRI) solar simulated |
| CN106206975A (en) * | 2016-09-21 | 2016-12-07 | 复旦大学 | A kind of high-development adjustable color temperature QLED white light implementation method based on InP/ZnS quantum dot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818774A (en) * | 2005-02-10 | 2006-08-16 | 安捷伦科技有限公司 | Improved studio light |
| CN1929710A (en) * | 2005-09-05 | 2007-03-14 | 林文钦 | White light-emitting device capable of regulating color temperature |
| CN201122595Y (en) * | 2007-11-30 | 2008-09-24 | 和谐光电科技（泉州）有限公司 | LED capable of adjusting color temperature and developing color |
| CN201232879Y (en) * | 2008-07-22 | 2009-05-06 | 深圳市同洲电子股份有限公司 | High color rendering property LED lamp |
-
2010
- 2010-03-25 CN CN2010101325267A patent/CN101801142B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818774A (en) * | 2005-02-10 | 2006-08-16 | 安捷伦科技有限公司 | Improved studio light |
| CN1929710A (en) * | 2005-09-05 | 2007-03-14 | 林文钦 | White light-emitting device capable of regulating color temperature |
| CN201122595Y (en) * | 2007-11-30 | 2008-09-24 | 和谐光电科技（泉州）有限公司 | LED capable of adjusting color temperature and developing color |
| CN201232879Y (en) * | 2008-07-22 | 2009-05-06 | 深圳市同洲电子股份有限公司 | High color rendering property LED lamp |
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