CN107333359A - The LED Mixed Lights Illuminations system and its light-dimming method of a kind of adjustable color - Google Patents
The LED Mixed Lights Illuminations system and its light-dimming method of a kind of adjustable color Download PDFInfo
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- CN107333359A CN107333359A CN201710697094.6A CN201710697094A CN107333359A CN 107333359 A CN107333359 A CN 107333359A CN 201710697094 A CN201710697094 A CN 201710697094A CN 107333359 A CN107333359 A CN 107333359A
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Abstract
A kind of disclosure of the invention LED Mixed Lights Illumination light-dimming methods of adjustable color, comprise the following steps：S 1 sets the colour temperature and lightness grade of illuminator, into next step；The microprocessing systems of S 2 are received after setting signal, and each group LED driving current value is found out according to look-up table, current controling signal are produced, into next step；The each group DC drivers of S 3, which are received, produces corresponding driving current after current controling signal, driving each group LED lights, into next step；The each group LED of S 4 are luminous to form light mixing effect, reaches corresponding lighting demand.The system carries out mixed light using the LED of different-colour more than two, reaches that adjustable color and LED light emphasize the purpose of colour temperature relative constancy in adjusting range, while the regulation of light intensity is according to perception (lightness) divided rank of human eye to light intensity.
Description
Technical field
The present invention relates to LED intelligent dimmings field, and in particular to the LED Mixed Lights Illuminations system and its tune of a kind of adjustable color
Light method.
Background technology
LED illumination is gradually replaced in recent years due to the advantage such as its luminous efficiency height, service life length, safe and reliable
Traditional lighting, is used widely and promotes in each application scenario.The various researchs for improving its performance are also more and more deep.
The light modulation of LED illumination System is exactly an important directions of research, and the main dimming mode of current LED illumination has pulse width tune
Save (PWM) and linear regulation two ways.PWM controls brightness, this method by controlling the dutycycle of high frequency electric current of make-and-break
The purpose of accurate adjustment can be reached, but there is the flicker problem of vision invisible, there is potential health risk.Linearly
Light modulation, which directly changes, controls brightness by LED size of current, and this method is simple and will not produce electromagnetic interference, but exists
Color-coordinate shift in whole light adjustable range is big, non-constant (color temperature shift) problem of colour temperature.LED colour temperature is human eye to LED
The impression of light source, is set physics, physiology and a psychologic complicated impression, this impression is because of the hobby of people
It is different and different, it is also possible to which that positive or negative effect is produced to the impression such as mood of people.Therefore, LED adjustable color is LED
Another important directions of further investigation.
Patent of invention ZL201510031334.X discloses a kind of color temperature compensating method of LED, and it utilizes LED colour temperature
The rule changed with operating current, reversely solves the operating current under the gentle luminous flux of expected color, utilizes two groups of different-colour models
The LED enclosed carries out mixed light, reaches the less purpose of colour temperature deviation in luminous flux adjustable range.
Color temperature compensating method disclosed in patent of invention ZL201510031334.X, directly sets up between electric current and relative colour temperature
Relation, and a series of chromaticity coordinate point on same relative colour temperature correspondence chromatic diagram, it is not a series of unique, this phase
Coordinate points with colour temperature are referred to as " thermoisopleth ", are inaccurate with the difference of colour temperature to quantify colour difference.And patent description
The fitting discrete point selected in operating process is extremely limited, and the computational methods for mixing colour temperature are also extremely coarse, and inaccurately, this is
The approximate theoretical foundation and approximation operation process of row certainly will cause the presence of larger deviation between theory expectation and actual conditions,
It is set to be unable to reach accurate color temperature compensating purpose.
In addition, existing LED dimming process does not account for perception of the human eye to luminous intensity also for the regulation of luminous intensity, i.e.,
Relation between the objective brightness of " lightness " and measuring apparatus measurement, the regulation of existing LED light intensity it is many using objective brightness as according to
According to being adjusted.
The content of the invention
The present invention provides the LED Mixed Lights Illuminations system and its light-dimming method of a kind of adjustable color, the system using two groups with
The LED of upper different-colour carries out mixed light, reaches that adjustable color and LED light emphasize the purpose of colour temperature relative constancy in adjusting range,
The regulation of light intensity is according to perception (lightness) divided rank of human eye to light intensity simultaneously.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of LED Mixed Lights Illumination light-dimming methods of adjustable color, comprise the following steps：
S1 sets the colour temperature and lightness grade of illuminator, into next step；
S2 microprocessing systems are received after setting signal, and the current value of each group LED drivings is found out according to look-up table, are produced
Current controling signal, into next step；
S3 each group DC drivers receive and corresponding driving current are produced after current controling signal, driving each group LED hairs
Light, into next step；
S4 each groups LED is luminous to form light mixing effect, reaches corresponding lighting demand.
Preferably, S2 includes：
S201 measures each group LED XYZ colorimeter system tristimulus values of CIE 1931 under different operating electric current respectively, goes forward side by side
Enter and only change size of current in step S202, test process, other test conditions ensure unanimously, to record each group measurement data
I、X、Y、Z；
S202 is fitted the numerical relation set up respectively between Y and X, Z and electric current I by data, into step S203；
The functional relation that S203 is set up between normalized brightness Y and lightness L, and enter step S204；
S204 sets up black body radiation trajectory coordinates u by data fitting0’v0' with the relation of colour temperature, and enter step S205；
S205 is found under correspondence colour temperature and lightness grade using traversal, each group LED control electric current size, is set up and is searched
Table relation.
Preferably, in S202 by taking two groups of LED as an example, the data relationship of formula (1) and formula (2) is set up：
Preferably, there is non-linear relation, specific numerical computations formula (3) table in S203 between brightness Y and lightness L
Reach.
Preferably, S204 sets up black body radiation trajectory coordinates u by data fitting0’v0' and colour temperature TcRelation such as formula
(4)：
Preferably, basic tristimulus values mixed light principle, the XYZ tristimulus values of mixed light are represented with formula (5) in S201
The each group LED correspondence light tristimulus values sums of mixing are respectively equal to participated in,
Wherein, the setting signal of reception is lightness grade L, is represented with normalized percentage, and colour temperature TCRepresent,
The overall normalization brightness Y of illuminator under correspondence lightness grade L is obtained according to formula (3), chosen in each group LED high-high brightness
Minimum value be system high-high brightness, the high-high brightness with setting normalization brightness Y be multiplied, you can obtain the lightness grade
Lower actual mixed light brightness Ym；
Ensuring mixed light brightness YmOn the premise of, it is assumed that one of brightness is combined as YAAnd YB, root can be distinguished accordingly
X is calculated according to formula (1) and formula (2)A、ZA、IA、XB、ZB、IB.X is calculated further according to formula (5)m、Zm。
Preferably, the tristimulus values of mixed light is obtained, you can mixed light CIELUV color spaces are calculated according to formula (6)
Chromaticity coordinates u 'mAnd v 'm。
Preferably, reception sets colour temperature as TC, its corresponding black body radiation trajectory coordinates u ' is calculated accordingly0And v '0。
For under each given colour temperature, the lookup list acquirement method needed for light modulation is to calculate the situation that lightness grade L is 100% first
Under, optimal LED luminance combination, the aberration minimum value defined using formula (7) is sat with black body radiation track under given colour temperature
The nearest coordinate points of mark；
In the optimum value under subsequently calculating non-100% each lightness grade, to ensure the aberration of LED illumination System itself most
Small and color temperature constant, follow-up optimal chromaticity coordinate no longer using black body radiation trajectory coordinates under correspondence colour temperature as foundation, but with
In the case that lightness grade L is 100%, the optimal chromaticity coordinate calculated is the u ' in foundation, i.e. formula (7)0And v '0Respectively
Assign new value
According to above method and step, each lightness grade L, colour temperature T can be calculatedCOptimal each group LED drivings down
Currents combination IAAnd IB, corresponding look-up table is finally set up, as shown in formula (8)：
A kind of LED Mixed Lights Illumination systems of adjustable color, it includes：
LED light adjusting controllers, the LED light adjusting controllers are used to input dim signal, and the dim signal includes colour temperature
Setting signal and lightness grade setting signal；
Microprocessing systems, the microprocessing systems receive the dim signal of the LED light adjusting controllers input, micro- place
Reason system obtains the current controling signal of each LED group after handling dim signal；
DC driver group, the DC driver group receives the electric current of each LED group from the microprocessing systems
Control signal, produces the DC current signal of each LED group, the DC driver group direct drive each group LED；
Multigroup LED, multigroup LED are driven luminous, the mixing generation gentle lightness grade of special color by the DC driver group
Illuminating effect.
The beneficial effects of the invention are as follows:The present invention establishes a kind of LED Mixed Lights Illumination systems of adjustable color, illuminator
It is made up of the LED of different-colour more than two, each group LED light modulation is using the linearity light adjusting of size of current control, it is to avoid PWM
The health hazard that the flicker of light modulation is likely to result in.
This illuminator colour temperature and luminous intensity are adjustable, while light-dimming method effectively prevent monochrome by the way of mixed light
The larger aberration (color temperature shift) that LED exists in linearity light adjusting.The present invention has been cleared between color-coordinate shift and color temperature shift
Relation, according to most basic optical superposition principle, design obtains optimal mixed color LED electric current proportioning, makes aberration minimum, finally ensures
Colour temperature relative constancy under the specific colour temperature of illuminator during luminous intensity regulation.
Perception of the human eye to luminous intensity is considered in the luminous intensity regulation of this illuminator, i.e., subjective luminous intensity：" lightness " with
The objective luminous intensity of measuring apparatus measurement:Relation between " brightness ", the luminous intensity regulation of illuminator is drawn by foundation of lightness
Graduation is adjusted, more reasonable and hommization.
Brief description of the drawings
Technical scheme in technology in order to illustrate the embodiments of the present invention more clearly, in being described below to embodiment technology
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the system diagram of the present invention；
Fig. 2 is the flow chart of the present invention；
Fig. 3 is the flow chart of second step in Fig. 2；
Non-linear relation figure between Fig. 4 brightness Y (objective luminous intensity) and lightness L (subjective luminous intensity)；
Fig. 5~8 are the effect displaying figures of specific embodiment；
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
As shown in figure 1, disclosing a kind of LED Mixed Lights Illumination systems of adjustable color in the present embodiment, it includes：LED is adjusted
Optical controller 1, microprocessing systems 2, DC driver group 3, multigroup LED4, the LED light adjusting controllers 1 are used to input light modulation letter
Number, the dim signal includes colour temperature setting signal and lightness grade setting signal；The microprocessing systems 2 receive the LED
The dim signal of light adjusting controller input, the microprocessing systems 2 obtain the electricity of each LED group after handling dim signal
Flow control signals；The DC driver group 3 receives the current controling signal of each LED group from the microprocessing systems 2,
Produce the DC current signal of each LED group, the DC driver group direct drive each group LED4；Multigroup LED4 is by described straight
Flow the driving of driver group luminous, mix the illuminating effect for producing the gentle lightness grade of special color.
Embodiment 2
As shown in Fig. 2 disclosing a kind of light-dimming method in embodiment 2, comprise the following steps：
S1 sets the colour temperature and lightness grade of illuminator, into next step；
S2 microprocessing systems are received after setting signal, and the current value of each group LED drivings is found out according to look-up table, are produced
Current controling signal, into next step；
S3 each group DC drivers receive and corresponding driving current are produced after current controling signal, driving each group LED hairs
Light, into next step；
S4 each groups LED is luminous to form light mixing effect, reaches corresponding lighting demand.
In the present embodiment, specifically,
As shown in figure 3, the flow that the look-up table that the step S2 in Fig. 2 flow charts is related to is obtained is as follows, step includes：
S201 measures each group LED XYZ colorimeter system tristimulus values of CIE 1931 under different operating electric current respectively, goes forward side by side
Enter step S202；Measuring condition is the design that illuminator has been final products, has mainly intersected row including each group LED
Cloth, lampshade for the final products that LED has been used etc. during measurement only changes size of current, other test conditions in test process
Ensure consistent.Measurement is carried out in darkroom, I, X, Y, Z of each group measurement data under final entry.Multigroup number is tested as much as possible
According to.
S202 is fitted the numerical relation set up respectively between Y and X, Z and electric current I by data, into step S203；With two
Exemplified by group LED, the data relationship of formula 1 and 2 is set up.
The functional relation that S203 is set up between normalized brightness Y and lightness L, and enter step S204；As shown in figure 4,
There is non-linear relation between brightness Y (objective luminous intensity) and lightness L (subjective luminous intensity), specific numerical computations can use formula
3 expression.
Black body radiation trajectory coordinates u is set up by data fitting0’v0' and colour temperature TcRelation, and enter step S205；
S205 is found under correspondence colour temperature and lightness grade using traversal, each group LED control electric current size, is set up and is searched
Table relation.
In Fig. 2, the setting signal that step 202 is received is lightness grade L, is represented with normalized percentage, and colour temperature
Use TCRepresent.
The overall normalization brightness Y of illuminator under correspondence lightness grade L can be obtained according to formula 3, each group LED is chosen
Minimum value in high-high brightness is the high-high brightness of system, and the high-high brightness is multiplied with normalization brightness Y, you can obtain the lightness
Actual mixed light brightness Y under gradem.Formula 5 illustrates basic tristimulus values mixed light principle, the XYZ tristimulus values of mixed light
Respectively equal to participate in each group LED correspondence light tristimulus values sums of mixing.Therefore on the premise of mixed light brightness is determined, using each
The method of group LED luminance combination traversal finds the minimum value of aberration, as optimum value.
Ensuring mixed light brightness YmOn the premise of, it is assumed that one of brightness is combined as YAAnd YB, root can be distinguished accordingly
X is calculated according to formula 1 and formula 2A、ZA、IA、XB、ZB、IB.X can be calculated further according to formula 5m、Zm.There are three thorns of mixed light
Swash value, you can the chromaticity coordinates u ' of mixed light CIELUV color spaces is calculated according to formula 6mAnd v 'm。
In Fig. 2, what step S202 was received sets colour temperature as TC, its corresponding black body radiation track can be calculated accordingly to be sat
Mark u '0And v '0.For under each given colour temperature, the lookup list acquirement method needed for the light modulation of this illuminator is to calculate first
In the case that lightness grade L is 100%, optimal LED luminance combination, the aberration minimum value defined using formula 7, i.e., with giving
The nearest coordinate points of black body radiation trajectory coordinates under colour temperature.
In the optimum value under subsequently calculating non-100% each lightness grade, to ensure the aberration of LED illumination System itself most
Small and colour temperature is as constant as possible, follow-up optimal chromaticity coordinate no longer using black body radiation trajectory coordinates under correspondence colour temperature as foundation,
But using lightness grade L as 100% in the case of, the optimal chromaticity coordinate calculated be foundation.U ' i.e. in formula 70And v '0
Assign new value respectively (in the case that lightness grade L is 100%, the optimal chromaticity coordinate calculated).
According to above method and step, each lightness grade L, colour temperature T can be calculatedCOptimal each group LED drivings down
Currents combination IAAnd IB, finally set up corresponding look-up table (as shown in Equation 8).
For definitely, the above calculate and statement process using two groups of LED (A groups and B groups) exemplified by, but the protection of this patent
Scope is not limited to two groups of LED mixed light.
Fig. 5 be in chromaticity coordinates (test value) of each group LED under different lightness grades, every width figure corresponding 10 it is discrete
Point be in 10% to 100% lightness range every the circle in 10% corresponding chromaticity coordinate, figure be with the color of 100% lightness seat
It is denoted as origin, it is used as radius with the distance between the point of distance farthest in remaining 9 points.
Round size can as the size of aberration in whole luminous intensity (lightness) adjustable range quantizating index, radius of circle
Bigger aberration is bigger.Fig. 5 a are 2700K warm tones, and Fig. 5 b are 6400K cool tones.
According to two groups of LED of Fig. 5 examples, the method design correlated colour temperature T that can be described by this patentCCIn 2700K extremely
Light mixing effect between 6400K.6 width of a~f shown in Fig. 6 distinguish corresponding correlated colour temperature for 3000K, 3400K, 3900K,
4400K, 5000K, 5600K mixed light colourity.
In order to more intuitively compare monochromatic LED and colour mixture aberration effect, 8 circles are placed in same chromatic diagram by Fig. 7.Root
Defined according to CIE, n rank u ' v ' radius of circles are n times of 0.0011, accordingly, 2700K warm tones aberration is 3 ranks, 6400K cool colours in figure
2 ranks are adjusted to, colour mixture aberration is 1 rank and following.Therefore, the method for this patent reduces the color of linearity light adjusting LED illumination System
Difference, it can be ensured that aberration is imperceptible in whole luminous intensity (lightness) adjustable range.Solve monochromatic LED linearity light adjusting process
In perceptible color drift problem.
Fig. 8 equally compares monochromatic LED and colour mixture illuminator from the angle of correlated colour temperature.2700K warm colours phase modulation in figure
It is 112K to close color temperature difference maximum, and 6400K cool tone related colour temperature difference maximum is 54K, and colour mixture related colour temperature difference maximum is
26K and following.The present embodiment may insure the colour temperature substantially constant in whole luminous intensity (lightness) adjustable range.
Establish a kind of LED Mixed Lights Illumination systems of adjustable color in above-described embodiment, illuminator by it is more than two not
With colour temperature LED constitute, each group LED light modulation using size of current control linearity light adjusting, it is to avoid PWM light modulation flicker
The health hazard being likely to result in.
This illuminator colour temperature and luminous intensity are adjustable, while light-dimming method effectively prevent monochrome by the way of mixed light
The larger aberration (color temperature shift) that LED exists in linearity light adjusting.The present invention has been cleared between color-coordinate shift and color temperature shift
Relation, according to most basic optical superposition principle, design obtains optimal mixed color LED electric current proportioning, makes aberration minimum, finally ensures
Colour temperature relative constancy under the specific colour temperature of illuminator during luminous intensity regulation.
Perception of the human eye to luminous intensity is considered in the luminous intensity regulation of this illuminator, i.e., subjective luminous intensity：" lightness " with
The objective luminous intensity of measuring apparatus measurement:Relation between " brightness ", the luminous intensity regulation of illuminator is drawn by foundation of lightness
Graduation is adjusted, more reasonable and hommization.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. the LED Mixed Lights Illumination light-dimming methods of a kind of adjustable color, it is characterised in that comprise the following steps：
S1 sets the colour temperature and lightness grade of illuminator, into next step；
S2 microprocessing systems are received after setting signal, and each group LED driving current value is found out according to look-up table, produce electric current
Control signal, into next step；
S3 each group DC drivers receive and corresponding driving current are produced after current controling signal, and driving each group LED lights, and enters
Enter next step；
S4 each groups LED is luminous to form light mixing effect, reaches corresponding lighting demand.
2. the LED Mixed Lights Illumination light-dimming methods of adjustable color according to claim 1, it is characterised in that S2 includes：
S201 measures each group LED XYZ colorimeter system tristimulus values of CIE 1931 under different operating electric current respectively, and enters step
Only change size of current in rapid S202, test process, other test conditions ensure unanimously to record the I of each group measurement data, X,
Y、Z；
S202 is fitted the numerical relation set up respectively between Y and X, Z and electric current I by data, into step S203；
The functional relation that S203 is set up between normalized brightness Y and lightness L, and enter step S204；
S204 sets up black body radiation trajectory coordinates u by data fitting0’v0' with the relation of colour temperature, and enter step S205；
S205 is found under correspondence colour temperature and lightness grade using traversal, each group LED control electric current size, sets up look-up table pass
System.
3. the LED Mixed Lights Illumination light-dimming methods of adjustable color according to claim 2, it is characterised in that
In S202 by taking two groups of LED as an example, the data relationship of formula (1) and formula (2) is set up：
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<mrow>
<msub>
<mi>I</mi>
<mi>B</mi>
</msub>
<mo>=</mo>
<msub>
<mi>c</mi>
<mrow>
<mn>1</mn>
<mi>B</mi>
</mrow>
</msub>
<msubsup>
<mi>Y</mi>
<mi>B</mi>
<mn>3</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>c</mi>
<mrow>
<mn>2</mn>
<mi>B</mi>
</mrow>
</msub>
<msubsup>
<mi>Y</mi>
<mi>B</mi>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>c</mi>
<mrow>
<mn>3</mn>
<mi>B</mi>
</mrow>
</msub>
<msub>
<mi>Y</mi>
<mi>B</mi>
</msub>
<mo>+</mo>
<msub>
<mi>c</mi>
<mrow>
<mn>4</mn>
<mi>B</mi>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mo>.</mo>
</mrow>
4. the LED Mixed Lights Illumination light-dimming methods of adjustable color according to claim 3, it is characterised in that
There is non-linear relation in S203 between brightness Y and lightness L, specific numerical computations are expressed with formula (3).
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mi>Y</mi>
<mo>=</mo>
<msup>
<mrow>
<mo>&lsqb;</mo>
<mrow>
<mo>(</mo>
<mi>L</mi>
<mo>+</mo>
<mn>16</mn>
<mo>)</mo>
</mrow>
<mo>/</mo>
<mn>116</mn>
<mo>&rsqb;</mo>
</mrow>
<mn>3</mn>
</msup>
<mo>,</mo>
<mi>L</mi>
<mo>></mo>
<mn>0.08</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>Y</mi>
<mo>=</mo>
<mi>L</mi>
<mo>&times;</mo>
<mn>27</mn>
<mo>/</mo>
<msup>
<mn>29</mn>
<mn>3</mn>
</msup>
<mo>,</mo>
<mi>L</mi>
<mo><</mo>
<mo>=</mo>
<mn>0.08</mn>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
5. the LED Mixed Lights Illumination light-dimming methods of adjustable color according to claim 4, it is characterised in that S204 passes through number
Black body radiation trajectory coordinates u is set up according to fitting0’v0' and colour temperature TcRelation such as formula (4)：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msubsup>
<mi>u</mi>
<mn>0</mn>
<mo>&prime;</mo>
</msubsup>
<mo>=</mo>
<msub>
<mi>p</mi>
<mn>1</mn>
</msub>
<msubsup>
<mi>T</mi>
<mi>c</mi>
<mn>3</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>p</mi>
<mn>2</mn>
</msub>
<msubsup>
<mi>T</mi>
<mi>c</mi>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>p</mi>
<mn>3</mn>
</msub>
<msub>
<mi>T</mi>
<mi>c</mi>
</msub>
<mo>+</mo>
<msub>
<mi>p</mi>
<mn>4</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msubsup>
<mi>v</mi>
<mn>0</mn>
<mo>&prime;</mo>
</msubsup>
<mo>=</mo>
<msub>
<mi>q</mi>
<mn>1</mn>
</msub>
<msubsup>
<mi>T</mi>
<mi>c</mi>
<mn>3</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>q</mi>
<mn>2</mn>
</msub>
<msubsup>
<mi>T</mi>
<mi>c</mi>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>q</mi>
<mn>3</mn>
</msub>
<msub>
<mi>T</mi>
<mi>c</mi>
</msub>
<mo>+</mo>
<msub>
<mi>q</mi>
<mn>4</mn>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>4</mn>
<mo>)</mo>
</mrow>
<mo>.</mo>
</mrow>
6. the LED Mixed Lights Illumination light-dimming methods of the adjustable color according to claim 5, it is characterised in that
Basic tristimulus values mixed light principle is represented with formula (5) in S201, the XYZ tristimulus values of mixed light is respectively equal to participate in
The each group LED correspondence light tristimulus values sums of mixing,
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>X</mi>
<mi>m</mi>
</msub>
<mo>=</mo>
<msub>
<mi>X</mi>
<mi>A</mi>
</msub>
<mo>+</mo>
<msub>
<mi>X</mi>
<mi>B</mi>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>Y</mi>
<mi>m</mi>
</msub>
<mo>=</mo>
<msub>
<mi>Y</mi>
<mi>A</mi>
</msub>
<mo>+</mo>
<msub>
<mi>Y</mi>
<mi>B</mi>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>Z</mi>
<mi>m</mi>
</msub>
<mo>=</mo>
<msub>
<mi>Z</mi>
<mi>A</mi>
</msub>
<mo>+</mo>
<msub>
<mi>Z</mi>
<mi>B</mi>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, the setting signal of reception is lightness grade L, is represented with normalized percentage, and colour temperature TCRepresent, according to
Formula (3) obtains the overall normalization brightness Y of illuminator under correspondence lightness grade L, chooses in each group LED high-high brightness most
Small value is the high-high brightness of system, and the high-high brightness is multiplied with the normalization brightness Y set, you can obtain real under the lightness grade
The mixed light brightness Y on borderm；
Ensuring mixed light brightness YmOn the premise of, it is assumed that one of brightness is combined as YAAnd YB, accordingly can be respectively according to public affairs
Formula (1) and formula (2) calculate XA、ZA、IA、XB、ZB、IB.X is calculated further according to formula (5)m、Zm。
7. adjustable color LED Mixed Lights Illumination light-dimming methods according to claim 6, it is characterised in that
Obtain the tristimulus values of mixed light, you can the chromaticity coordinates u ' of mixed light CIELUV color spaces is calculated according to formula (6)mWith
v’m。
<mrow>
<mo>.</mo>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msubsup>
<mi>u</mi>
<mi>m</mi>
<mo>&prime;</mo>
</msubsup>
<mo>=</mo>
<mfrac>
<mrow>
<mn>4</mn>
<msub>
<mi>X</mi>
<mi>m</mi>
</msub>
</mrow>
<mrow>
<msub>
<mi>X</mi>
<mi>m</mi>
</msub>
<mo>+</mo>
<mn>15</mn>
<msub>
<mi>Y</mi>
<mi>m</mi>
</msub>
<mo>+</mo>
<mn>3</mn>
<msub>
<mi>Z</mi>
<mi>m</mi>
</msub>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msubsup>
<mi>v</mi>
<mi>m</mi>
<mo>&prime;</mo>
</msubsup>
<mo>=</mo>
<mfrac>
<mrow>
<mn>9</mn>
<msub>
<mi>Y</mi>
<mi>m</mi>
</msub>
</mrow>
<mrow>
<msub>
<mi>X</mi>
<mi>m</mi>
</msub>
<mo>+</mo>
<mn>15</mn>
<msub>
<mi>Y</mi>
<mi>m</mi>
</msub>
<mo>+</mo>
<mn>3</mn>
<msub>
<mi>Z</mi>
<mi>m</mi>
</msub>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
8. the LED Mixed Lights Illumination light-dimming methods of adjustable color according to claim 7, it is characterised in that
Reception sets colour temperature as TC, its corresponding black body radiation trajectory coordinates u ' is calculated accordingly0And v '0.For each given
Colour temperature under, the lookup list acquirement method needed for light modulation is calculated first in the case that lightness grade L is 100%, optimal LED
Brightness is combined, the aberration minimum value defined using formula (7), the i.e. coordinate nearest with black body radiation trajectory coordinates under given colour temperature
Point；
In the optimum value under subsequently calculating non-100% each lightness grade, for the aberration that ensures LED illumination System itself it is minimum and
Color temperature constant, follow-up optimal chromaticity coordinate is no longer using black body radiation trajectory coordinates under correspondence colour temperature as foundation, but with lightness
In the case that grade L is 100%, the optimal chromaticity coordinate calculated is the u ' in foundation, i.e. formula (7)0And v '0Assign respectively new
Value.
<mrow>
<msub>
<mi>D</mi>
<mi>c</mi>
</msub>
<mo>=</mo>
<msqrt>
<mrow>
<msup>
<mrow>
<mo>(</mo>
<msubsup>
<mi>u</mi>
<mi>m</mi>
<mo>&prime;</mo>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>u</mi>
<mn>0</mn>
<mo>&prime;</mo>
</msubsup>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>+</mo>
<msup>
<mrow>
<mo>(</mo>
<msubsup>
<mi>v</mi>
<mi>m</mi>
<mo>&prime;</mo>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>v</mi>
<mn>0</mn>
<mo>&prime;</mo>
</msubsup>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
</mrow>
</msqrt>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>7</mn>
<mo>)</mo>
</mrow>
</mrow>
According to above method and step, each lightness grade L, colour temperature T can be calculatedCOptimal each group LED drive current group down
Close IAAnd IB, corresponding look-up table is finally set up, as shown in formula (8)：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>I</mi>
<mi>A</mi>
</msub>
<mo>=</mo>
<msub>
<mi>f</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>L</mi>
<mo>,</mo>
<msub>
<mi>T</mi>
<mi>C</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>I</mi>
<mi>B</mi>
</msub>
<mo>=</mo>
<msub>
<mi>f</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>L</mi>
<mo>,</mo>
<msub>
<mi>T</mi>
<mi>C</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>8</mn>
<mo>)</mo>
</mrow>
<mo>.</mo>
</mrow>
9. the LED Mixed Lights Illumination systems of a kind of adjustable color, it is characterised in that it includes：
LED light adjusting controllers, the LED light adjusting controllers are used to input dim signal, and the dim signal is set including colour temperature
Signal and lightness grade setting signal；
Microprocessing systems, the microprocessing systems receive the dim signal of the LED light adjusting controllers input, the microprocessor system
System obtains the current controling signal of each LED group after handling dim signal；
DC driver group, the DC driver group receives the current control of each LED group from the microprocessing systems
Signal, produces the DC current signal of each LED group, the DC driver group direct drive each group LED；
Multigroup LED, multigroup LED are driven luminous, the photograph of the mixing generation gentle lightness grade of special color by the DC driver group
Obvious results fruit.
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Cited By (12)
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|---|---|---|---|---|
| CN108154540A (en) * | 2017-12-22 | 2018-06-12 | 武汉华显光电技术有限公司 | Best coloration and brightness determine method, apparatus and computer readable storage medium |
| CN108282930A (en) * | 2018-03-14 | 2018-07-13 | 生迪光电科技股份有限公司 | Light adjusting circuit, lamp assembly, light adjusting system and light-dimming method |
| CN108401314A (en) * | 2018-01-29 | 2018-08-14 | 杭州电子科技大学 | Based on polar non-pole light regulating shading process |
| CN108449826A (en) * | 2018-01-29 | 2018-08-24 | 杭州电子科技大学 | Eyeshield intelligent illuminating system |
| CN108800063A (en) * | 2018-06-21 | 2018-11-13 | 四川九洲光电科技股份有限公司 | A kind of LED lamp shading process |
| CN109275235A (en) * | 2018-09-11 | 2019-01-25 | 浙江理工大学 | A kind of commercial vehicle interior light light-dimming method |
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| CN114375082A (en) * | 2022-03-21 | 2022-04-19 | 广州光联电子科技有限公司 | LED light source dimming method and dimming system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM342713U (en) * | 2007-10-19 | 2008-10-11 | Prodisc Technology Inc | Light-emitting device capable of adjusting color temperature and its control circuit structure |
| CN201310775Y (en) * | 2008-09-24 | 2009-09-16 | 比亚迪股份有限公司 | LED illuminating system capable of adjusting color temperature |
| 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 |
| CN102548112A (en) * | 2010-12-31 | 2012-07-04 | 上海广茂达光艺科技股份有限公司 | Mixed light realization method |
| CN202679720U (en) * | 2012-05-22 | 2013-01-16 | 广州雄智照明实业有限公司 | LED lamp based on high color rendering index and possessing adjustable brightness and color temperature |
| CN105578639A (en) * | 2015-12-09 | 2016-05-11 | 浙江凯耀照明股份有限公司 | LED lamp and dimming method thereof |
| CN106162981A (en) * | 2016-05-22 | 2016-11-23 | 上海大学 | Light mixing method based on three-primary color LED |
| CN106817811A (en) * | 2017-03-30 | 2017-06-09 | 横店集团得邦照明股份有限公司 | Based on the method that PWM four primaries LED realizes full gamut scope luminous intensity distribution |
-
2017
- 2017-08-15 CN CN201710697094.6A patent/CN107333359A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM342713U (en) * | 2007-10-19 | 2008-10-11 | Prodisc Technology Inc | Light-emitting device capable of adjusting color temperature and its control circuit structure |
| CN201310775Y (en) * | 2008-09-24 | 2009-09-16 | 比亚迪股份有限公司 | LED illuminating system capable of adjusting color temperature |
| 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 |
| CN102548112A (en) * | 2010-12-31 | 2012-07-04 | 上海广茂达光艺科技股份有限公司 | Mixed light realization method |
| CN202679720U (en) * | 2012-05-22 | 2013-01-16 | 广州雄智照明实业有限公司 | LED lamp based on high color rendering index and possessing adjustable brightness and color temperature |
| CN105578639A (en) * | 2015-12-09 | 2016-05-11 | 浙江凯耀照明股份有限公司 | LED lamp and dimming method thereof |
| CN106162981A (en) * | 2016-05-22 | 2016-11-23 | 上海大学 | Light mixing method based on three-primary color LED |
| CN106817811A (en) * | 2017-03-30 | 2017-06-09 | 横店集团得邦照明股份有限公司 | Based on the method that PWM four primaries LED realizes full gamut scope luminous intensity distribution |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108154540A (en) * | 2017-12-22 | 2018-06-12 | 武汉华显光电技术有限公司 | Best coloration and brightness determine method, apparatus and computer readable storage medium |
| CN108401314B (en) * | 2018-01-29 | 2019-12-13 | 杭州电子科技大学 | Stepless dimming and toning method based on polar coordinates |
| CN108401314A (en) * | 2018-01-29 | 2018-08-14 | 杭州电子科技大学 | Based on polar non-pole light regulating shading process |
| CN108449826A (en) * | 2018-01-29 | 2018-08-24 | 杭州电子科技大学 | Eyeshield intelligent illuminating system |
| CN108449826B (en) * | 2018-01-29 | 2020-06-05 | 杭州电子科技大学 | Eye-protecting intelligent lighting system |
| CN108282930A (en) * | 2018-03-14 | 2018-07-13 | 生迪光电科技股份有限公司 | Light adjusting circuit, lamp assembly, light adjusting system and light-dimming method |
| CN108800063A (en) * | 2018-06-21 | 2018-11-13 | 四川九洲光电科技股份有限公司 | A kind of LED lamp shading process |
| CN109275235A (en) * | 2018-09-11 | 2019-01-25 | 浙江理工大学 | A kind of commercial vehicle interior light light-dimming method |
| US10874002B2 (en) | 2019-02-01 | 2020-12-22 | Dongguan Star Mount Trading Co., Ltd. | Method and apparatus for computing illumination mixed lights, computer device and storage medium |
| CN110719661A (en) * | 2019-10-16 | 2020-01-21 | 肖高利 | Algorithm for improving light source color rendering index to approach natural spectrum |
| CN110719661B (en) * | 2019-10-16 | 2021-06-29 | 肖高利 | Algorithm for improving light source color rendering index to approach natural spectrum |
| CN113498237A (en) * | 2020-03-20 | 2021-10-12 | 杭州海康威视数字技术股份有限公司 | Driving current control method and mixed light supplement control method for multispectral light supplement lamp |
| CN114375082A (en) * | 2022-03-21 | 2022-04-19 | 广州光联电子科技有限公司 | LED light source dimming method and dimming system |
| CN115190282A (en) * | 2022-06-23 | 2022-10-14 | 重庆市天实精工科技有限公司 | Method for avoiding white balance distortion of camera module at high color temperature |
| CN115190282B (en) * | 2022-06-23 | 2023-11-28 | 重庆市天实精工科技有限公司 | Method for avoiding white balance distortion of camera module under high color temperature |
| CN115297590A (en) * | 2022-10-10 | 2022-11-04 | 杭州罗莱迪思科技股份有限公司 | Color non-shift control method for dimming lamp and application thereof |
| CN115297590B (en) * | 2022-10-10 | 2023-02-14 | 杭州罗莱迪思科技股份有限公司 | Color non-shift control method for dimming lamp and application thereof |
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Application publication date: 20171107 |