CN108463024A - Multi-colored led Mixed Lights Illumination method and lighting system - Google Patents
Multi-colored led Mixed Lights Illumination method and lighting system Download PDFInfo
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- CN108463024A CN108463024A CN201810127271.1A CN201810127271A CN108463024A CN 108463024 A CN108463024 A CN 108463024A CN 201810127271 A CN201810127271 A CN 201810127271A CN 108463024 A CN108463024 A CN 108463024A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
Multi-colored led Mixed Lights Illumination method and system provided by the invention, obtain the specification information parameter of colors LED, and index and light color science index parameter are adjusted according to the biological clock of the specification information parameter acquiring colors LED, and according to the specification information parameter, biological clock adjusts index and light color science index parameter calculates the luminous intensity of assorted LED, and drive assorted LED, keep the brightness value of assorted LED consistent with the calculated colors luminous intensity of LED, the light of assorted LED is uniformly mixed into light extraction, multi-colored led Mixed Lights Illumination method and system provided by the invention, using non-blue light emitting mechanism, white light is sent out with a variety of colored led mixing, since colored led spectral region can select, harmful blue light can more thoroughly be eliminated.
Description
Technical field
The present invention relates to a kind of illuminating device more particularly to a kind of multi-colored led Mixed Lights Illumination methods and lighting system.
Background technology
The appearance and application of light emitting diode (LED) bring the energy efficiency for decupling conventional light source.Common white light
LED, which often consumes one watt of energy, can generate the luminous flux of about 100 lumens, i.e. light efficiency is 100lm/W, is much larger than incandescent lamp and fluorescence
Lamp.The white light LEDs of this high energy efficiency are all based on blue light emitting mechanism：Blue-ray LED surface cover yellow fluorescent powder, one
Some blue light excitated fluorescent powder generates yellow light, and another part blue light is directed through fluorescent powder, continues blue light-emitting.As a result, blue light
It is mixed with yellow light, produces white light.Therefore in white LED spectrum, inevitably contain a large amount of blue component.
And biological clock is largely influenced by blue light：Optical signal is transmitted to by the light sensitive cells ipRGC in human eye
Human-body biological master slave system adjusts the secretion of the hormones such as human body epiphysin, and to further adjust body temperature, vigilance, sleep is exempted from
The biological clocks function such as epidemic disease.It can be said that ipRGC is the optical inlet that biological clock is adjusted.And they mainly absorb 440nm and arrive
The blue light of 500nm, absorption peak are located at 480nm or so.These blue light signals inhibit the secretion of human body epiphysin, improve the body of people
Temperature, and make one awake, vigilance.But various negative effects can be brought in night excess intake blue light：Interfere the sleep of people, drop
Low immunity etc..It is various biological clock to be caused disorderly studies have shown that be muchly exposed under night blue light, it generates each
Class psychophysiological disease.
Therefore, for white light LEDs while energy saving, excessive blue light has also carried out harm for human body health care belt.This harm exists
Night is particularly evident.
Existing solution is divided to two kinds.The first scheme is to filter out blue light using special optical filter on lamps and lanterns, the
Two kinds of schemes are to use excessive fluorescent powder in LED preparation process so that most of blue light is converted to yellow light, to reduce
Blue laser output.Both schemes have some blue light (being more than 20%) to send out although having filtered out some blue light.Due to blue light pair
The depression effect of human body epiphysin is not that linear, remaining a small amount of blue light still significantly inhibits human body melatonin secretion, right
Biological clock and health generate interference and harm.
Invention content
Have in view of that, it is necessary to which a kind of multi-colored led Mixed Lights Illumination method is provided, it is intended to which solution in the prior art can not be thorough
Eliminate the defect of harmful blue light.
To achieve the above object, the present invention uses following technical proposals:
On the one hand, multi-colored led Mixed Lights Illumination method provided by the invention, includes the following steps：
Step S110：The specification information parameter of colors LED is obtained, and according to the specification information parameter acquiring colors LED
Biological clock adjust index and light color science index parameter, and according to the specification information parameter, biological clock adjust index with
And light color science index parameter calculates the luminous intensity of assorted LED；The colors LED is colored led including at least 3 kinds, and wraps
Include at least one kind of purple light, the wave crest range of the purple light 410 between 420nm, do not include wave crest 440nm to 480nm it
Between blue-ray LED and include blue light excitation luminous mechanism White LED, the specification information parameter includes the luminous light of LED
Spectrum, VA characteristic curve and luminous flux, it includes equivalent epiphysin brightness index, epiphysin inhibition ratio that the biological clock, which adjusts index,
Example index, biological clock stimulus index and epiphysin stimulate illumination, the smooth color science index parameter, including light source chromaticity coordinates, color
Temperature, luminous flux, chromaticity coordinates difference and colour rendering index；
Step S120：The luminous intensity of calculated colors LED is obtained, and drives assorted LED, makes the brightness of assorted LED
Value is consistent with the calculated colors luminous intensity of LED；
Step S130：The light of assorted LED is uniformly mixed into light extraction.
In some preferred embodiment, in step s 110, the specification information parameter of colors LED is obtained, and according to described
The biological clock of specification information parameter acquiring colors LED adjusts index and light color science index parameter, and is believed according to the specification
Breath parameter, biological clock adjust index and light color science index parameter calculates the luminous intensity of assorted LED, including following steps
Suddenly：
Step S111：Extract the specification information parameter of colors LED；
Step S112：The spectrum of the light source entirety after assorted LED mixed luminescences is calculated according to the light intensity value of assorted LED
Power is distributed；
Step S113：It is distributed according to the light rate power, calculates biological clock and adjust index and light color science index parameter；
Step S114：The biological clock is adjusted into index and light color science index parameter and corresponding target indicator ratio respectively
Compared with, and obtain light color science index difference and photobiology index difference；
Step S115：According to the smooth color science index difference and photobiology index difference, the value of calculating target function；
And
Step S116：The requirement for determining whether to meet application scenarios according to the value of the object function；If the target letter
Several values is less than the brightness value of the assorted LED currently set, then it is assumed that meets the requirement of application scenarios；If the target function value
It is greater than the set value, then it is assumed that do not meet the requirement of application scenarios, and the feature by analyzing difference table, determine suitable assorted
The light intensity value of LED, and return to step S112.
In some preferred embodiment, in step S112, it is mixed that assorted LED is calculated according to the light intensity value of assorted LED
The spectral power distribution for closing the light source entirety after shining, specifically includes：
The spectral power distribution of the light source entirety after colors LED mixed luminescences is calculated by following formula:
Wherein：ɑiFor the light intensity coefficient that i-th kind of color LED shines, minimum 0, correspondence does not shine, and is up to 1, it is corresponding most
It is big to shine, SiThe spectral power distribution of (λ) i-th kind of color LED.
In some preferred embodiment, it in step S113, is distributed according to the light rate power, calculates biological clock adjusting and refer to
Number and light color science index parameter, specifically include：
Light color science index parameter is calculated according to color science general formula；
Biological clock, which is calculated, according to following formula adjusts index；Wherein：
The equivalent epiphysin brightness index calculates as follows：
It is as follows that the epiphysin inhibits proportion index to calculate：
Wherein, L is equivalent epiphysin brightness, rMIt is the spectral power point of light source entirety to stimulate ratio, S (λ) for epiphysin
Cloth, C (λ) are the photosensitive curve of human body epiphysin, and v (λ) is the quick curve of human eye visual light, and range of integration 380nm to 780nm is can
Light-exposed wave-length coverage.
In some preferred embodiment, in step sl 15, referred to photobiology according to the smooth color science index difference
Difference is marked, the value of calculating target function specifically includes：
According to the value of following calculation formula calculating target functions：
Wherein, △ CiWith △ MiLight color science index difference and photobiology index difference, ɑ are indicated respectivelyiWith βiTable respectively
Show the weight to each difference.
In some preferred embodiment, in step S116, by all kinds of gradient descent algorithms, conjugation descent algorithm or with
Machine searching algorithm analyzes the feature of difference table, and determines the light intensity value of suitable colors LED.
In some preferred embodiment, in the step s 120, the luminous intensity of calculated colors LED is obtained, and is driven
Assorted LED keeps the brightness value of assorted LED consistent with the calculated colors luminous intensity of LED, includes the following steps：
Step S121：The driving current needed for each channels colors LED is calculated according to the luminous intensity of assorted LED；
Step S122：According to the driving current needed for each channels assorted LED, calculates each channels assorted LED and correspond to
DC values；
Step S123：Corresponding electric current is exported after obtaining DC values, and assorted LED is driven to shine；
Step S124：Measure the luminous intensity of colors LED, and judge the assorted LED that measurement obtains luminous intensity whether
Equal to the luminous intensity of calculated colors LED, if so, the light of assorted LED is uniformly mixed light extraction；If it is not, adjusting the DC
Value, and it is back to step S123, until judging the luminous intensity for measuring obtained assorted LED equal to calculated colors LED's
Luminous intensity.
In some preferred embodiment, in step S124, the luminous intensity of colors LED is measured, and judges to measure and obtain
Assorted LED luminous intensity whether be equal to calculated colors LED luminous intensity, specifically include following step：Under
It states formula and judges whether the luminous intensity for measuring obtained assorted LED is equal to the luminous intensity of calculated colors LED,
Wherein, x is actual measurement light intensity value, and μ is the light intensity value of algorithm output, and δ is absolute error.
On the other hand, the present invention has also put forward a kind of multi-colored led Mixed Lights Illumination system, including：
Computing unit：Specification information parameter for obtaining assorted LED, and according to specification information parameter acquiring colors
The biological clock of LED adjusts index and light color science index parameter, and adjusts index according to the specification information parameter, biological clock
And light color science index parameter calculates the luminous intensity of assorted LED；The colors LED is colored led including at least 3 kinds, and
Including at least one kind of purple light, the wave crest range of the purple light is 410 between 420nm, not including wave crest in 440nm to 480nm
Between blue-ray LED and include blue light excitation luminous mechanism White LED, the specification information parameter include LED shine
Spectrum, VA characteristic curve and luminous flux, it includes equivalent epiphysin brightness index, epiphysin inhibition that the biological clock, which adjusts index,
Proportion index, biological clock stimulus index and epiphysin stimulation illumination, the smooth color science index parameter, including light source chromaticity coordinates,
Colour temperature, luminous flux, chromaticity coordinates difference and colour rendering index；
Driving unit：Luminous intensity for obtaining calculated colors LED, and assorted LED is driven, make assorted LED's
Brightness value is consistent with the calculated colors luminous intensity of LED；And
Optical unit：For the light of assorted LED uniformly to be mixed light extraction.
In some preferred embodiment, the optical unit includes mixed light lamp body and is set to the mixed light lamp body light-emitting surface
Mixed light material, the mixed light lamp body can make the light of assorted LED in inside after reflecting and reflecting mixing by the mixed light material
Outgoing, the mixed light material includes transparent acrylic, milky acrylic board, transparent or opaque PC plastic plate.
The present invention uses above-mentioned technical proposal, can realize following advantageous effects：
Multi-colored led Mixed Lights Illumination method and system provided by the invention obtain the specification information parameter and root of colors LED
Index and light color science index parameter are adjusted according to the biological clock of the specification information parameter acquiring colors LED, and according to described
Specification information parameter, biological clock adjust index and light color science index parameter calculates the luminous intensity of assorted LED, and drives
Assorted LED keeps the brightness value of assorted LED consistent with the calculated colors luminous intensity of LED, the light of assorted LED is uniformly mixed
Close light extraction, multi-colored led Mixed Lights Illumination method and system provided by the invention, using non-blue light emitting mechanism, with a variety of colored led
Mixing sends out white light, due to colored led spectral region it can be selected that harmful blue light can be eliminated more thoroughly.
Meanwhile multi-colored led Mixed Lights Illumination method and system provided by the invention, the mechanism to be shone using colour mixture, Ke Yiyong
Digital circuit precisely adjusts light source luminescent spectrum, and the after-vision for eliminating blue light both can be largely made up in conjunction with intelligent algorithm
Drawback in upper and energy efficiency, and product differentiation problem can be well solved, highly consistent bulk article is provided.
In addition, multi-colored led Mixed Lights Illumination method and system provided by the invention, are suitable for family's night illumination at night,
Commercial night illumination, and the public organizations to work at night are needed, high visual quality, energy-efficient and high consistency are being provided
Illumination simultaneously, do not interfere human body melatonin secretion, improve sleep quality of human body, strengthen immunity improves holistic health water
It is flat.
Description of the drawings
Fig. 1 is the step flow chart for the multi-colored led Mixed Lights Illumination method that the embodiment of the present invention 1 provides.
Fig. 2 adjusts index and photochromic coloured silk for what the embodiment of the present invention 1 provided according to the specification information parameter, biological clock
Learn the step flow chart that index parameter calculates the luminous intensity of assorted LED.
Fig. 3 is the driving colors LED that the embodiment of the present invention 1 provides, and makes the brightness value of assorted LED and calculated colors
The consistent step flow chart of the luminous intensity of LED.
Fig. 4 is the structural schematic diagram for the multi-colored led Mixed Lights Illumination system that the embodiment of the present invention 2 provides.
Fig. 5 is the structural schematic diagram of the computing unit provided in the embodiment of the present invention 2.
Fig. 6 is the structural schematic diagram for the driving unit that the embodiment of the present invention 2 provides.
The spectrum comparison for the LED that Fig. 7 is common white light LEDs plus optical filter white light LEDs and the above embodiment of the present invention provide
Schematic diagram.
Fig. 8 is the light color science index and photobiology index comparison diagram of various LED provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
Referring to Fig. 1, for the step flow chart 10 of multi-colored led Mixed Lights Illumination method provided by the invention, it is described multi-colored led
Mixed Lights Illumination method includes the following steps：
Step S110 obtains the specification information parameter of colors LED, and according to the specification information parameter acquiring colors LED
Biological clock adjust index and light color science index parameter, and according to the specification information parameter, biological clock adjust index with
And light color science index parameter calculates the luminous intensity of assorted LED.
In the present embodiment, the colors LED is colored led including at least 3 kinds, and includes at least one kind of purple light, the purple light
Wave crest range 410 between 420nm, do not include blue-ray LED of the wave crest between 440nm to 480nm and do not include indigo plant
Light excites the White LED of luminous mechanism.
It is appreciated that since optical signal is transmitted to human-body biological master slave system by the light sensitive cells ipRGC in human eye, people is adjusted
The secretion of the hormones such as body epiphysin, to further adjust body temperature, vigilance, sleep such as is immunized at the biological clocks function, can be with
It says, ipRGC is the optical inlet that biological clock is adjusted, and they mainly absorb the blue light of 440nm to 500nm, absorbs peak position
In 480nm or so, these blue light signals inhibit the secretion of human body epiphysin, improve the body temperature of people, and make one awake, vigilance,
But various negative effects can be brought in night excess intake blue light：The sleep of people is interfered, immunity etc., therefore the application are reduced
The purple light wave crest range that the assorted LED of offer includes 410 between 420nm, do not include wave crest 440nm to 480nm it
Between blue-ray LED and include blue light excitation luminous mechanism White LED.
Preferably, in multi-colored led Mixed Lights Illumination method provided by the invention, the LED used includes but not limited to that wave crest is
The red-light LED of 660nm, wave crest are the red-light LED of 640nm, and wave crest is the red-light LED of 620nm, and wave crest is the amber of 600nm
LED, wave crest are the green-yellow light LED of 550nm, and wave crest is the green light LED of 540nm, and wave crest is the green light LED of 520nm, and wave crest is
The purple LED of 420nm, wave crest are the purple LED of 410nm.
In the present embodiment, the specification information parameter includes the luminescent spectrum, VA characteristic curve and luminous flux of LED,
The biological clock adjust index include equivalent epiphysin brightness index (Equivalent Melanopic Luminance, EML),
Epiphysin inhibits proportion index, biological clock stimulus index (Circadian Stimulus, CS) and epiphysin to stimulate illumination
(Melanopic illuminance), the smooth color science index parameter include light source chromaticity coordinates (CIE-x, y), colour temperature
(CCT), luminous flux (lm), chromaticity coordinates difference (Duv) and colour rendering index (Ra).
Referring to Fig. 2, for step S110 in the embodiment of the present invention 1, the specification information parameter of acquisition colors LED, and according to
The biological clock of the specification information parameter acquiring colors LED adjusts index and light color science index parameter, and according to the rule
The step of lattice information parameter, biological clock adjusting index and light color science index parameter calculate the luminous intensity of assorted LED is flowed
Cheng Tu includes the following steps：
Step S111：Extract the specification information parameter of colors LED.
Step S112：The spectrum of the light source entirety after assorted LED mixed luminescences is calculated according to the light intensity value of assorted LED
Power is distributed.
In some preferred embodiment, the spectrum of the light source entirety after colors LED mixed luminescences is calculated by following formula
Power is distributed:
Wherein：ɑiFor the light intensity coefficient that i-th kind of color LED shines, minimum 0, correspondence does not shine, and is up to 1, it is corresponding most
It is big to shine, SiThe spectral power distribution of (λ) i-th kind of color LED.
Step S113：It is distributed according to the light rate power, calculates biological clock and adjust index and light color science index parameter.
It in some preferred embodiments, in step S113, is distributed according to the light rate power, calculates biological clock and adjust
Index and light color science index parameter, specifically include：
Light color science index parameter is calculated according to color science general formula；
Biological clock, which is calculated, according to following formula adjusts index；Wherein：
The equivalent epiphysin brightness index calculates as follows：
It is as follows that the epiphysin inhibits proportion index to calculate：
Wherein, L is equivalent epiphysin brightness, rMIt is the spectral power point of light source entirety to stimulate ratio, S (λ) for epiphysin
Cloth, C (λ) are the photosensitive curve of human body epiphysin, and v (λ) is the quick curve of human eye visual light, and range of integration 380nm to 780nm is can
Light-exposed wave-length coverage.Epiphysin, which inhibits ratio to characterize in spectrum, has the ingredient of inhibiting effect to account for spectrum human body melatonin secretion
The ratio of luminous flux.
Step S114：The biological clock is adjusted into index and light color science index parameter and corresponding target indicator ratio respectively
Compared with, and obtain light color science index difference and photobiology index difference；
It is appreciated that the setting of target indicator is determined according to the usage scenario of light source.As home lighting uses low color temperature CCT
=3000K, general colour rendering index Ra=70, high epiphysin brightness index EML=6.5uW/cm2；Office lighting uses high color
Warm CCT=6000K, compared with high color rendering index (CRI) Ra=80, low epiphysin brightness index EML=13.2uW/cm2Deng.
Step S115：According to the smooth color science index difference and photobiology index difference, the value of calculating target function；
In some preferred embodiments, according to the value of following calculation formula calculating target functions：
Wherein, △ CiWith △ MiLight color science index difference and photobiology index difference, ɑ are indicated respectivelyiWith βiTable respectively
Show the weight to each difference, it will be understood that weighted value is bigger, indicates that influence of this difference to system performance is bigger, that is, right
The requirement higher that this difference minimizes.
Step S116：Judge whether the value of the object function is less than the brightness value of the assorted LED currently set；If described
The value of object function is less than the brightness value of the assorted LED currently set, then it is assumed that meets the requirement of application scenarios；If the target
Functional value is greater than the set value, then it is assumed that does not meet the requirement of application scenarios, and the feature by analyzing difference table, it is suitable to determine
The light intensity value of assorted LED, and return to step S112.
It is appreciated that the value of the object function is less than setting value, then it is assumed that meet the requirement of application scenarios, and will be current
The brightness value of the assorted LED of setting exports；If target function value is more than some setting value, then it is assumed that do not meet application scenarios
It is required that and by existing difference table △ CiWith △ MiOutput determines the assorted LED's of a new round by analyzing the feature of difference table
Light intensity value.
In some preferred embodiments, pass through all kinds of gradient descent algorithms, conjugation descent algorithm or random search algorithm
The feature of difference table is analyzed, and determines the light intensity value of suitable colors LED.
It is appreciated that is provided in the embodiment of the present invention 1 calculates the algorithm of the luminous intensity of assorted LED, it both can be very
It is made up in big degree after eliminating blue light visually with the drawback in energy efficiency, and product differentiation can be well solved and asked
Topic, provides highly consistent bulk article.
Referring again to Fig. 1, the multi-colored led Mixed Lights Illumination method further includes following step：
Step S120：The luminous intensity of calculated colors LED is obtained, and drives assorted LED, makes the brightness of assorted LED
Value is consistent with the calculated colors luminous intensity of LED；
Referring to Fig. 3, for the step S120 that the embodiment of the present invention 1 provides, the luminous strong of calculated colors LED is obtained
Degree, and assorted LED is driven, the step flow for keeping the brightness value of assorted LED consistent with the calculated colors luminous intensity of LED
Figure, includes the following steps：
Step S121：The driving current needed for each channels colors LED is calculated according to the luminous intensity of assorted LED；
In some preferred embodiments, calculated needed for each channels colors LED according to the light intensity-current curve of LED
Driving current.
Step S122：According to the driving current needed for each channels assorted LED, calculates each channels assorted LED and correspond to
DC values；
It is appreciated that the driving current needed for each channels colors LED, can calculate the corresponding DC values in each channel.
Step S123：Corresponding electric current is exported after obtaining DC values, and assorted LED is driven to shine；
Step S124：Measure the luminous intensity of colors LED, and judge the assorted LED that measurement obtains luminous intensity whether
Equal to the luminous intensity of calculated colors LED, if so, the light of assorted LED is uniformly mixed light extraction；If it is not, adjusting the DC
Value, and it is back to step S123, until judging the luminous intensity for measuring obtained assorted LED equal to calculated colors LED's
Luminous intensity.
In some preferred embodiments, judge whether measure the obtained luminous intensity of assorted LED by following formula
Equal to the luminous intensity of calculated colors LED,
Wherein, x is actual measurement light intensity value, and μ is the light intensity value of algorithm output, and δ is absolute error.
If being appreciated that, above-mentioned absolute error is in allowable range, without calibration；If except allowable range, need
It is calibrated, if positive bigger than normal, accordingly turns DC values down, if reversed bigger than normal, accordingly tune up DC values.
Referring again to Fig. 1, the multi-colored led Mixed Lights Illumination method further includes following step：
Step S130：The light of assorted LED is uniformly mixed into light extraction.
The multi-colored led Mixed Lights Illumination method that the embodiment of the present invention 1 provides obtains the specification information parameter and root of colors LED
Index and light color science index parameter are adjusted according to the biological clock of the specification information parameter acquiring colors LED, and according to described
Specification information parameter, biological clock adjust index and light color science index parameter calculates the luminous intensity of assorted LED, and drives
Assorted LED keeps the brightness value of assorted LED consistent with the calculated colors luminous intensity of LED, the light of assorted LED is uniformly mixed
Close light extraction, multi-colored led Mixed Lights Illumination method and system provided by the invention, using non-blue light emitting mechanism, with a variety of colored led
Mixing sends out white light, due to colored led spectral region it can be selected that harmful blue light can be eliminated more thoroughly.
Embodiment 2
Referring to Fig. 4, for structural representation Figure 20 of multi-colored led Mixed Lights Illumination system provided by the invention, including：It calculates single
Member 210, driving unit 220 and optical unit 230.Wherein：
Computing unit 210 is used to obtain the specification information parameter of assorted LED, and each according to the specification information parameter acquiring
The biological clock of color LED adjusts index and light color science index parameter, and is referred to according to the specification information parameter, biological clock adjusting
Number and light color science index parameter calculate the luminous intensity of assorted LED.
In the present embodiment, the colors LED is colored led including at least 3 kinds, and includes at least one kind of purple light, the purple light
Wave crest range 410 between 420nm, do not include blue-ray LED of the wave crest between 440nm to 480nm and do not include indigo plant
Light excites the White LED of luminous mechanism.
Preferably, in multi-colored led Mixed Lights Illumination method provided by the invention, the LED used includes but not limited to that wave crest is
The red-light LED of 660nm, wave crest are the red-light LED of 640nm, and wave crest is the red-light LED of 620nm, and wave crest is the amber of 600nm
LED, wave crest are the green-yellow light LED of 550nm, and wave crest is the green light LED of 540nm, and wave crest is the green light LED of 520nm, and wave crest is
The purple LED of 420nm, wave crest are the purple LED of 410nm.
In the present embodiment, the specification information parameter includes the luminescent spectrum, VA characteristic curve and luminous flux of LED,
The biological clock adjust index include equivalent epiphysin brightness index (Equivalent Melanopic Luminance, EML),
Epiphysin inhibits proportion index, biological clock stimulus index (Circadian Stimulus, CS) and epiphysin to stimulate illumination
(Melanopic illuminance), the smooth color science index parameter include light source chromaticity coordinates (CIE-x, y), colour temperature
(CCT), luminous flux (lm), chromaticity coordinates difference (Duv) and colour rendering index (Ra).
Referring to Fig. 5, for the structural schematic diagram of the computing unit 210 provided in the embodiment of the present invention 2, including：
Parameter extraction module 211：Specification information parameter for extracting assorted LED.
First computing module 212：For calculating the light after assorted LED mixed luminescences according to the light intensity value of assorted LED
The spectral power distribution of source entirety.
In some preferred embodiment, after the first computing module 212 calculates colors LED mixed luminescences by following formula
The spectral power distribution of light source entirety:
Wherein：ɑiFor the light intensity coefficient that i-th kind of color LED shines, minimum 0, correspondence does not shine, and is up to 1, it is corresponding most
It is big to shine, SiThe spectral power distribution of (λ) i-th kind of color LED.
Second computing module 213：For being distributed according to the light rate power, calculates biological clock and adjust index and light color science
Index parameter.
In some preferred embodiments, the second computing module 213 can be distributed according to the light rate power, calculate biological clock
Index and light color science index parameter are adjusted, is specifically included：
Light color science index parameter is calculated according to color science general formula；
Biological clock, which is calculated, according to following formula adjusts index；Wherein：
The equivalent epiphysin brightness index calculates as follows：
It is as follows that the epiphysin inhibits proportion index to calculate：
Wherein, L is equivalent epiphysin brightness, rMIt is the spectral power point of light source entirety to stimulate ratio, S (λ) for epiphysin
Cloth, C (λ) are the photosensitive curve of human body epiphysin, and v (λ) is the quick curve of human eye visual light, and range of integration 380nm to 780nm is can
Light-exposed wave-length coverage.Epiphysin, which inhibits ratio to characterize in spectrum, has the ingredient of inhibiting effect to account for spectrum human body melatonin secretion
The ratio of luminous flux.
Comparison module 214：The biological clock is adjusted into index respectively and light color science index parameter refers to corresponding target
Mark compares, and obtains light color science index difference and photobiology index difference；
It is appreciated that the setting of target indicator is determined according to the usage scenario of light source.As home lighting uses low color temperature CCT
=3000K, general colour rendering index Ra=70, high epiphysin brightness index EML=6.5uW/cm2；Office lighting uses high color
Warm CCT=6000K, compared with high color rendering index (CRI) Ra=80, low epiphysin brightness index EML=13.2uW/cm2Deng.
Third computing module 215：For according to the smooth color science index difference and photobiology index difference, calculating mesh
The value of scalar functions；
In some preferred embodiments, third computing module 215 can be according to following calculation formula calculating target functions
Value：
Wherein, △ CiWith △ MiLight color science index difference and photobiology index difference, ɑ are indicated respectivelyiWith βiTable respectively
Show the weight to each difference, it will be understood that weighted value is bigger, indicates that influence of this difference to system performance is bigger, that is, right
The requirement higher that this difference minimizes.
Judgment module 216：Judge whether the value of the object function is less than the brightness value of the assorted LED currently set；If
The value of the object function is less than the brightness value of the assorted LED currently set, then it is assumed that meets the requirement of application scenarios；If described
Target function value is greater than the set value, then it is assumed that is not met the requirement of application scenarios, and the feature by analyzing difference table, is determined to close
The light intensity value of suitable assorted LED.
It is appreciated that the value of the object function is less than setting value, then it is assumed that meet the requirement of application scenarios, and will be current
The brightness value of the assorted LED of setting is exported to driving unit 220；If target function value is more than some setting value, then it is assumed that no
Meet the requirement of application scenarios, and by existing difference table Δ CiWith Δ MiOutput is determined new by analyzing the feature of difference table
The light intensity value of the assorted LED of one wheel.
In some preferred embodiments, pass through all kinds of gradient descent algorithms, conjugation descent algorithm or random search algorithm
The feature of difference table is analyzed, and determines the light intensity value of suitable colors LED.
It is appreciated that the computing unit 210 provided in the embodiment of the present invention 2 calculates the calculation of the luminous intensity of assorted LED
Method not only can largely make up after eliminating blue light visually with the drawback in energy efficiency, but also can well solve
Product differentiation problem provides highly consistent bulk article.
Referring again to Fig. 4, the multi-colored led Mixed Lights Illumination system further includes driving unit 220, and driving unit 220 is used for
The luminous intensity of calculated colors LED is obtained, and drives assorted LED, makes the brightness value of assorted LED and calculated colors
The luminous intensity of LED is consistent.
In some preferred embodiments, driving unit 220 uses the modulation system of linear constant current, the modulation system that can lead to
The assorted LED channel size of current of change DC values control is crossed, to change the light intensity of assorted LED.
Referring to Fig. 6, the structural schematic diagram of the driving unit 220 provided for the embodiment of the present invention 2, including：
Driving current computing module 221, for being calculated needed for each channels colors LED according to the luminous intensity of assorted LED
Driving current；
In some preferred embodiments, driving current computing module 221 calculates each according to the light intensity-current curve of LED
Driving current needed for each channels color LED.
It is every to calculate assorted LED for the driving current needed for each channels assorted LED for DC values computing module 222
The corresponding DC values in a channel；
It is appreciated that the driving current needed for each channels colors LED, can calculate the corresponding DC values in each channel.
Drive module 223：By exporting corresponding electric current after obtaining DC values, and assorted LED is driven to shine；
Luminous intensity measurement unit 224：The luminous intensity of colors LED is measured, and judges to measure the luminous strong of obtained assorted LED
Whether degree is equal to the luminous intensity of calculated colors LED, if so, the light of assorted LED is uniformly mixed light extraction；If it is not, adjustment
The DC values, and it is back to drive module 223, until judging that the luminous intensity for measuring obtained assorted LED is equal to the calculating
The luminous intensity of the calculated colors LED of unit.
In some preferred embodiments, luminous intensity measurement unit 224 judges to measure obtained assorted LED by following formula
Luminous intensity whether be equal to calculated colors LED luminous intensity,
Wherein, x is actual measurement light intensity value, and μ is the light intensity value of algorithm output, and δ is absolute error.
If being appreciated that, above-mentioned absolute error is in allowable range, without calibration；If except allowable range, need
It is calibrated, if positive bigger than normal, accordingly turns DC values down, if reversed bigger than normal, accordingly tune up DC values.
Referring again to Fig. 4, the multi-colored led Mixed Lights Illumination system further includes optical unit 230, and optical unit 230 is used for
The light of assorted LED is uniformly mixed into light extraction.
In some preferred embodiment, the optical unit 230 includes mixed light lamp body and is set to the mixed light lamp body and goes out
The mixed light material of smooth surface, the mixed light lamp body can make the light of assorted LED in inside after reflecting and reflecting mixing by the mixed light
Material is emitted, and the mixed light material includes transparent acrylic, milky acrylic board, transparent or opaque PC plastic plate.
The multi-colored led Mixed Lights Illumination system that the embodiment of the present invention 2 provides, the rule of assorted LED are obtained by computing unit 210
Lattice information parameter, and index and light color science index are adjusted according to the biological clock of the specification information parameter acquiring colors LED
Parameter, and calculate assorted LED's according to the specification information parameter, biological clock adjusting index and light color science index parameter
Luminous intensity drives assorted LED by driving unit 220, makes the brightness value of assorted LED and shining for calculated colors LED
Intensity is consistent, the light of assorted LED is uniformly being mixed light extraction by optical unit 230, multi-colored led mixed light provided by the invention shines
Bright system sends out white light using non-blue light emitting mechanism with a variety of colored led mixing, since colored led spectral region can be with
Selection, can more thoroughly eliminate harmful blue light.
Comparative example
Referring to Fig. 7, be common white light LEDs, add the LED's that optical filter white light LEDs and the above embodiment of the present invention provide
Spectrum compares.
It can be seen from figure 7 that blue-ray LED excited white light of the common white light LEDs using 445nm or so, therefore in biology
There is a large amount of Energy distribution in the sections blue wave band 440nm to 500nm of clock stimulation.After using optical filter, in this section
Blue light energy reduce, but can not completely remove, still there is more blue light to be distributed in this section.Night use this two
Kind illumination can all inhibit human body epiphysin normal secretions, interference sleep to lead to all kinds of Physiological Psychology diseases.And it is of the present invention
Polychrome mixed light LED in the sections blue wave band 440nm to 500nm that biological clock stimulates only have minimal amount of Energy distribution, greatly
Partial spectrum Energy distribution provides primary illumination effect in the wave band of 500nm or more, and small part Energy distribution arrives 440nm 400
Wave band provides making up for visual quality.
Following table summarizes the polychrome mixed light LED provided in an embodiment of the present invention, the common LED of two kinds of different-colours and plus
The LED of optical filter is in visual effect, photochromic fidelity, epiphysin inhibition level, the index of energy efficiency etc., to make ratio
Compared with.
The light color science index and photobiology Indexes Comparison of the various LED of Table I
Please refer to light color science index and photobiology index comparison diagram that Fig. 8 provides various LED.
Polychrome Mixed Lights Illumination method and system provided by the invention is can be seen that in conjunction with upper table and Fig. 8, first in epiphysin
In stimulation ratio, than common LED and add the common LED of optical filter will be low, due to polychrome Mixed Lights Illumination side provided by the invention
Method and system do not depend on 440nm to 500nm blue light emitting mechanism, and selected LED is in the wave band almost without energy point
Cloth, so that night epiphysin normal secretions will not be suppressed；And in visual effect, colour rendering index of the invention is 85,
General lighting standard is met and exceeded, the reason is that the present invention uses multi-colored led mixed light, spectrum is in red, yellow, green, bluish-green wave band
There are abundant Energy distribution and natural light close, and the missing of blue wave band energy, affect the eye fidelity of the present invention
(i.e. colour rendering index Ra).The wave band of this excalation provides compensation by the Energy distribution of purple wave band so that whole colour rendering index
Higher than the LED of common blue light luminous mechanism.
In addition, polychrome Mixed Lights Illumination method and system provided by the invention, in terms of photochromic consistency, the present invention is using calculation
Method unit calculates device described in each automatically, and driving unit is accurately controlled the driving current of each LED,
So that smaller with the difference between a batch of device；In terms of energy efficiency, polychrome Mixed Lights Illumination method of the present invention
With system the purple light and red-light LED that human eye is insensitive, total energy effect have been used due to not having to use additional filtering device
Rate is slightly below common LED, but the numerical value of 95lm/W still can meet most of efficiency requirement in practical applications.
Multi-colored led Mixed Lights Illumination method and system provided by the invention are suitable for family's night illumination at night, commercial night
Between illuminate, and need the public organizations (such as hospital, school and factory) that work at night, high visual quality, high energy dose-effect be provided
The illumination of rate and high consistency simultaneously, do not interfere human body melatonin secretion, improve sleep quality of human body, strengthen immunity,
It is horizontal to improve holistic health.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of multi-colored led Mixed Lights Illumination method, which is characterized in that include the following steps：
Step S110：Obtain the specification information parameter of colors LED, and the life according to the specification information parameter acquiring colors LED
Object clock adjusts index and light color science index parameter, and adjusts index and light according to the specification information parameter, biological clock
Color science index parameter calculates the luminous intensity of assorted LED；The colors LED include at least 3 kinds it is colored led, and include to
Few a kind of purple light, the wave crest range of the purple light is 410 between 420nm, not including wave crest between 440nm to 480nm
Blue-ray LED and the White LED for not including blue light excitation luminous mechanism, the specification information parameter include the luminescent spectrum of LED, volt
Pacify characteristic curve and luminous flux, it includes that equivalent epiphysin brightness index, epiphysin inhibit ratio to refer to that the biological clock, which adjusts index,
Number, biological clock stimulus index and epiphysin stimulate illumination, the smooth color science index parameter, including light source chromaticity coordinates, colour temperature, light
Flux, chromaticity coordinates difference and colour rendering index；
Step S120：Obtain the luminous intensity of calculated colors LED, and drive assorted LED, make assorted LED brightness value and
The luminous intensity of calculated colors LED is consistent；
Step S130：The light of assorted LED is uniformly mixed into light extraction.
2. multi-colored led Mixed Lights Illumination method according to claim 1, which is characterized in that in step s 110, obtain assorted
The specification information parameter of LED, and index and photochromic coloured silk are adjusted according to the biological clock of the specification information parameter acquiring colors LED
Index parameter is learned, and is calculated respectively according to the specification information parameter, biological clock adjusting index and light color science index parameter
The luminous intensity of color LED, includes the following steps：
Step S111：Extract the specification information parameter of colors LED；
Step S112：The spectral power of the light source entirety after assorted LED mixed luminescences is calculated according to the light intensity value of assorted LED
Distribution；
Step S113：It is distributed according to the light rate power, calculates biological clock and adjust index and light color science index parameter；
Step S114：The biological clock is adjusted into index and light color science index parameter compared with corresponding target indicator respectively,
And obtain light color science index difference and photobiology index difference；
Step S115：According to the smooth color science index difference and photobiology index difference, the value of calculating target function；And
Step S116：Judge whether the value of the object function is less than the brightness value of the assorted LED currently set, if the target
The value of function is less than the brightness value of the assorted LED currently set, then it is assumed that meets the requirement of application scenarios；If the object function
Value is greater than the set value, then it is assumed that is not met the requirement of application scenarios, and the feature by analyzing difference table, is determined suitable assorted
The light intensity value of LED, and return to step S112.
3. multi-colored led Mixed Lights Illumination method according to claim 2, which is characterized in that in step S112, according to colors
The light intensity value of LED calculates the spectral power distribution of the light source entirety after assorted LED mixed luminescences, specifically includes：
The spectral power distribution of the light source entirety after colors LED mixed luminescences is calculated by following formula:
Wherein：ɑiFor the light intensity coefficient that i-th kind of color LED shines, minimum 0, correspondence does not shine, and is up to 1, corresponding maximum hair
Light, SiThe spectral power distribution of (λ) i-th kind of color LED.
4. multi-colored led Mixed Lights Illumination method according to claim 2, which is characterized in that in step S113, according to described
Light rate power is distributed, and is calculated biological clock and is adjusted index and light color science index parameter, specifically includes：
Light color science index parameter is calculated according to color science general formula；
Biological clock, which is calculated, according to following formula adjusts index；Wherein：
The equivalent epiphysin brightness index calculates as follows：
It is as follows that the epiphysin inhibits proportion index to calculate：
Wherein, L is equivalent epiphysin brightness, rMIt is the spectral power distribution of light source entirety, C to stimulate ratio, S (λ) for epiphysin
(λ) is the photosensitive curve of human body epiphysin, and v (λ) is the quick curve of human eye visual light, and range of integration 380nm to 780nm is visible light
Wave-length coverage.
5. multi-colored led Mixed Lights Illumination method according to claim 2, which is characterized in that in step sl 15, according to described
Light color science index difference and photobiology index difference, the value of calculating target function specifically include：
According to the value of following calculation formula calculating target functions：
Wherein, △ CiWith △ MiLight color science index difference and photobiology index difference, ɑ are indicated respectivelyiWith βiExpression pair respectively
The weight of each difference.
6. multi-colored led Mixed Lights Illumination method according to claim 2, which is characterized in that in step S116, by all kinds of
The feature of gradient descent algorithm, conjugation descent algorithm or random search algorithm analysis difference table, and determine suitable colors LED's
Light intensity value.
7. multi-colored led Mixed Lights Illumination method according to claim 1, which is characterized in that in the step s 120, obtain and calculate
The luminous intensity of the assorted LED gone out, and assorted LED is driven, make the brightness value of assorted LED and shining for calculated colors LED
Intensity is consistent, includes the following steps：
Step S121：The driving current needed for each channels colors LED is calculated according to the luminous intensity of assorted LED；
Step S122：According to the driving current needed for each channels assorted LED, the corresponding DC in each channels assorted LED is calculated
Value；
Step S123：Corresponding electric current is exported after obtaining DC values, and assorted LED is driven to shine；
Step S124：The luminous intensity of colors LED is measured, and judges whether the luminous intensity for measuring obtained assorted LED is equal to
The luminous intensity of calculated colors LED, if so, the light of assorted LED is uniformly mixed light extraction；If it is not, the DC values are adjusted, and
It is back to step S123, until judging that the luminous intensity for measuring obtained assorted LED is luminous strong equal to calculated colors LED
Degree.
8. multi-colored led Mixed Lights Illumination method according to claim 7, which is characterized in that in step S124, measure assorted
The luminous intensity of LED, and judge whether the luminous intensity for measuring obtained assorted LED is luminous equal to calculated colors LED
Intensity specifically includes following step：Judge whether the luminous intensity for measuring obtained assorted LED is equal to by following formula to calculate
The luminous intensity of the assorted LED gone out,
Wherein, x is actual measurement light intensity value, and μ is the light intensity value of algorithm output, and δ is absolute error.
9. a kind of multi-colored led Mixed Lights Illumination system, including：
Computing unit：Specification information parameter for obtaining assorted LED, and according to the specification information parameter acquiring colors LED
Biological clock adjust index and light color science index parameter, and according to the specification information parameter, biological clock adjust index with
And light color science index parameter calculates the luminous intensity of assorted LED；The colors LED is colored led including at least 3 kinds, and wraps
Include at least one kind of purple light, the wave crest range of the purple light 410 between 420nm, do not include wave crest 440nm to 480nm it
Between blue-ray LED and include blue light excitation luminous mechanism White LED, the specification information parameter includes the luminous light of LED
Spectrum, VA characteristic curve and luminous flux, it includes equivalent epiphysin brightness index, epiphysin inhibition ratio that the biological clock, which adjusts index,
Example index, biological clock stimulus index and epiphysin stimulate illumination, the smooth color science index parameter, including light source chromaticity coordinates, color
Temperature, luminous flux, chromaticity coordinates difference and colour rendering index；
Driving unit：Luminous intensity for obtaining calculated colors LED, and assorted LED is driven, make the brightness of assorted LED
Value is consistent with the calculated colors luminous intensity of LED；And
Optical unit：For the light of assorted LED uniformly to be mixed light extraction.
10. multi-colored led Mixed Lights Illumination system according to claim 9, which is characterized in that the optical unit includes mixed light
Lamp body and the mixed light material for being set to the mixed light lamp body light-emitting surface, the mixed light lamp body can be such that the light of assorted LED is passed through in inside
It is emitted by the mixed light material after reflection and refraction mixing, the mixed light material includes transparent acrylic, milky acrylic
Plate, transparent or opaque PC plastic plate.
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| CN108495398A (en) * | 2018-02-09 | 2018-09-04 | 深圳万源光引科技有限公司 | Multi-colored led luminous intensity optimization method, optimization device, lighting system |
| CN109673082A (en) * | 2018-12-26 | 2019-04-23 | 中国科学技术大学 | Spectrum, color and the color temperature control method of LED illumination System |
| CN110267404A (en) * | 2019-08-14 | 2019-09-20 | 杭州新湖电子有限公司 | A kind of the high-precision control module and method of light source |
| CN112105127A (en) * | 2020-09-14 | 2020-12-18 | 广州市雅江光电设备有限公司 | Stage lamp color temperature control method and system, computer equipment and storage medium |
| 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 |
| CN112255785A (en) * | 2020-10-16 | 2021-01-22 | 安徽阳光照明电器有限公司 | White light LED color mixing design method for light health and illumination system thereof |
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| CN112105127A (en) * | 2020-09-14 | 2020-12-18 | 广州市雅江光电设备有限公司 | Stage lamp color temperature control method and system, computer equipment and storage medium |
| CN112105127B (en) * | 2020-09-14 | 2021-07-27 | 广州市雅江光电设备有限公司 | Stage lamp color temperature control method and system, computer equipment and storage medium |
| CN112255785A (en) * | 2020-10-16 | 2021-01-22 | 安徽阳光照明电器有限公司 | White light LED color mixing design method for light health and illumination system thereof |
| CN113760206A (en) * | 2021-04-30 | 2021-12-07 | 北京字节跳动网络技术有限公司 | Method and device for adjusting brightness of lighting device, electronic equipment and storage medium |
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