CN106604471A - Method for carrying out segmented color temperature adjustment by using multiple full-spectrum white light sources - Google Patents

Method for carrying out segmented color temperature adjustment by using multiple full-spectrum white light sources Download PDF

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CN106604471A
CN106604471A CN201611269064.7A CN201611269064A CN106604471A CN 106604471 A CN106604471 A CN 106604471A CN 201611269064 A CN201611269064 A CN 201611269064A CN 106604471 A CN106604471 A CN 106604471A
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light source
light
chromaticity coordinates
color
target
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CN106604471B (en
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李福生
金宇章
韩秋漪
蒋昀
张善端
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SHANGHAI FUZHAN INTELLIGENT TECHNOLOGY Co Ltd
Fudan University
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SHANGHAI FUZHAN INTELLIGENT TECHNOLOGY Co Ltd
Fudan University
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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]

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
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Abstract

The invention belongs to the technical field of semiconductor ligthing, and particularly discloses a method for carrying out segmented color temperature adjustment by using multiple full-spectrum white light sources. A target light source with high color rendering property and high white light preference at a required color temperature is obtained through segmented selecting and mixing of multiple full-spectrum white light sources; the color temperature adjustment range is 2,000-8,000K, the color tolerance SDCM is smaller than or equal to 3 and is below a blackbody curve in a CIE 1931xy chromaticity diagram, the general color rendering index Ra is greater than or equal to 95, the color rendering indexes R1-R8 are greater than or equal to 90 and at least five of the special color rendering indexes R9-R15 are greater than or equal to 90. The white light sources obtained through the adjustment method of optimizing the color temperature range, the color tolerance and the color rendering indexes can be used for lighting situations with relatively high requirements on light quality.

Description

Carry out being segmented the method that colour temperature is adjusted using multiple full spectrum white-light light sources
Technical field
The invention belongs to technical field of semiconductor illumination, and in particular to a kind of full spectrum white-light light source color temperature control method.
Background technology
With the increasingly raising of human living standard, the light quality of lighting source is increasingly paid attention to.Household, market, The room lighting occasions such as museum, the Art Museum, artistic working room, printing house, textile mills, clothing factory, high-grade hotel, light quality Importance is far above light efficiency, and moulding for overall indoor environment is played a key effect.There are many researchs at present by dimming toning To improve the colour temperature range of accommodation and color rendering index of white light, but color tolerance SDCM for the preference no less important for improving white light. Research shows, with colour temperature and development index under, when color tolerance SDCM≤3 and when chromaticity coordinates is in black body-line lower section, white light has Higher visual preference degree (Feng X F, Xu W, Han Q Y, Zhang S D. LED light with enhanced color saturation and improved white light perception [J]. Optics Express, 2016, 24 (1): 573–585.).When high-quality white light is mixed to get using different light sources, it should while optimizing color Temperature, color rendering index and color tolerance three, this proposes new challenge for the strategy for adjusting spectrum.
In the past, although traditional RGB three-primary color LEDs mixed white light lacks yellow band with higher radiation light efficiency, Cause color rendering index relatively low, particularly the 9th kind special colour rendering index R9 is very low, is not suitable for general lighting purposes.And it is general at present It is to excite YAG fluorescent powder, fluorescent material to absorb using blue-ray LED (480nm of peak wavelength about 440) all over the LED white light technologies for using The gold-tinted sent after blue light produces white light after mixing with some blue light transmitted through fluorescent material.This method effectively supplements gold-tinted Wave band, color rendering index has reached more than 80, but still shows slightly not enough.More researchs are obtained using multiple different light source mixing To the higher white light source of light quality.
Patent WO2013140296 proposes the white light source that a kind of light source by 3 or more is constituted, wherein at least one Partially green white light is obtained by blue-ray LED+fluorescent material, at least one by blue-ray LED+partially blue white light of fluorescent material acquisition, and at least One LED for being to send red light or amber light.Resulting white light has more than 85 color rendering index and presses close to black matrix Line chromaticity coordinates.Patent US20130207570 propose it is a kind of use 4 LED mixing to produce predetermined photochromic method, including 1 red-light LED, 1 green light LED, 1 blue-ray LED, and a white light LEDs, white light LEDs can excite YAG fluorescent powder to send out by blue light Light.The white light of default chromaticity coordinates can be obtained by adjusting the energy weight of 4 LED, in some cases color rendering index can be with Reach more than 90.However, above method does not meet three optimisation criteria simultaneously：High color rendering index (CRI) (Ra >=95, color rendering index R1 R8 >=90, special colour rendering index R9 R15 at least 5 >=90), colour temperature (2,000 8000 K) and low color are adjusted on a large scale Tolerance (SDCM≤3 and chromaticity coordinates is below black body-line).
Therefore, it is desirable to research and develop one kind while obtaining compared with high color rendering index (CRI) and colour temperature range of accommodation, optimization color tolerance is taken into account The white light source control method of difference SDCM.
The content of the invention
It is an object of the invention to provide a kind of carry out being segmented the method that colour temperature is adjusted using multiple full spectrum white-light light sources.
The method that the colour temperature that the present invention is provided is adjusted, is chosen by segmentation and mixes multiple full spectrum white-light light sources, is obtained The target light source of high white light preference under required colour temperature, and color tolerance SDCM≤3, comprise the following steps that：
Step 1：Choose the individual full spectrum white-light light sources of N (N >=3)：S1, S2, S3..., SN, its colour temperature is respectively T1, T2, T3... TN, 1500K≤T1 < T2 < T3 < … < TN ≤ 8500 K, and its chromaticity coordinates is black in CIE 1931xy chromaticity diagraies Body curve is distributed；
Step 2：Colour temperature T needed for target setting light sourcet, 2000 K< Tt<8000 K, try to achieve this colour temperature in CIE 1931xy Blackbody curve in chromaticity diagram isotemperature line corresponding nearby, its linear equation isl：y=kx+b；
Step 3：The chromaticity coordinates of target setting light source below blackbody curve and color tolerance SDCM≤3, so the color of target light source Coordinate is positioned at straight line l is below blackbody curve and makes on one section of line segment L of SDCM≤3；
Step 4：3 light source (S are chosen in N number of full spectrum white-light light source described in step 1i、Si+1And Si+2), meet：(1) 3 The chromaticity coordinates of the chromaticity coordinates distance objective light source of light source is nearer；The chromaticity coordinates of (2) 3 light sources at least one in target light source The chromaticity coordinates left side and at least one on the right of target light source chromaticity coordinates；
Step 5：3 light sources selected by step 4 are used to be mixed to get target light source, and the chromaticity coordinates of 3 selected light sources connects Line surrounds a triangle, and a part of the line segment L described in step 3 should be at this triangle interior, intercept this portion of line segment L It is divided into line segment Lt, line segment LtOn each chromaticity coordinates point, be all the optional white light chromaticity coordinates of target light source and correspondence one Different color tolerances SDCM；
Step 6：Line segment LtOn all chromaticity coordinates points can be by with logical ratio blend step 4 of not sharing the same light selected 3 Individual light source (Si、Si+1And Si+2) obtain, for line segment LtOn different chromaticity coordinates points (i.e. the different coordinate points of color tolerance SDCM), Meet the S of the chromaticity coordinates point with singular value equation solutioni、Si+1And Si+2The logical ratio of light, and calculate the color tolerance under different proportion Difference SDCM, general colour rendering index Ra and special colour rendering index R1 R15；
Step 7：According to required color tolerance SDCM, general colour rendering index Ra and special colour rendering index R1 R15, choose corresponding Si、Si+1And Si+2The logical ratio of light, each light source institute light requirement is obtained using pulse width modulated dimmer and is led to, deisgn product is obtained Satisfactory target light source.
More design method has another kind of embodiment for simplifying, and comprises the following steps that：
Step 1 step 3 is with above-mentioned step 1 step 3；
Step 4：2 light source (S are chosen in N number of full spectrum white-light light source described in step 1i、Si+1), meet：(1) 2 light source Chromaticity coordinates distance objective light source chromaticity coordinates it is nearer；The chromaticity coordinates of (2) 2 light sources has a chromaticity coordinates in target light source The left side and another on the right of target light source chromaticity coordinates；
Step 5：2 light sources selected by step 4 are used to be mixed to get target light source, and the chromaticity coordinates of 2 selected light sources connects If the line M and line segment L described in step 3 intersects at point N, point N is one color tolerance of the white light chromaticity coordinates of target light source and correspondence Difference SDCM；
Step 6：Chromaticity coordinates point N can be by with 2 light source (S selected in the logical ratio blend step 4 of certain lighti、Si+1) obtain, Solution meets the S of chromaticity coordinates point Ni、Si+1The logical ratio of light, and calculate color tolerance SDCM, general colour rendering index Ra and special colour developing Index R1 R15；
Step 7：2 light source institute light requirements are obtained using pulse width modulated dimmer to lead to, deisgn product obtains satisfactory target Light source.
In the present invention, the target light source that the method for designing is obtained, its colour temperature range of accommodation is 2,000 8000 K.
In the present invention, the target light source that the method for designing is obtained and is in color tolerance SDCM≤3 of its white light chromaticity coordinates Blackbody curve lower section in CIE 1931xy chromaticity diagraies, with more preferable white light preference.
In the present invention, the target light source that the method for designing is obtained, the mesh that colour mixture is obtained under every color temperature, every SDCM Mark light source, its general colour rendering index Ra >=95, color rendering index R1 R8 >=90, special colour rendering index R9 R15 at least 5 >= 90。
Description of the drawings
Fig. 1 is the full spectrum white-light light source relative spectral power distributions of 3468 K of the present invention.
Fig. 2 is the full spectrum white-light light source relative spectral power distributions of 3953 K of the present invention.
Fig. 3 is the full spectrum white-light light source relative spectral power distributions of 5042 K of the present invention.
Fig. 4 is the full spectrum white-light light source relative spectral power distributions of 5956 K of the present invention.
Fig. 5 is the full spectrum white-light light source relative spectral power distributions of 6474 K of the present invention.
Fig. 6 is the full spectrum white-light light source relative spectral power distributions of 3706K (target light source) of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing and example, the present invention will be further described.Described embodiment is only the portion of the present invention Divide embodiment.Other all embodiments of creative achievement are not made based on the embodiment in the present invention, the present invention is belonged to Protection domain.
The present invention chooses and mixes multiple full spectrum white-light light sources and obtains high white light preference under required colour temperature by segmentation Target light source, and color tolerance SDCM≤3.Specific method for designing is comprised the following steps：
Step 1：Choose 5 full spectrum white-light light source (S1, S2, S3, S4, S5), its colour temperature be respectively 3468 K, 3953 K, 5042 K, 5956 K and 6474 K, as shown in table 1, its relative spectral power distribution curve is as shown in Fig. 15 for its optical color parameter；
Step 2：Colour temperature needed for target setting light source is 3700 K, tries to achieve black matrix of this colour temperature in CIE 1931xy chromaticity diagraies Curve isotemperature line corresponding nearby, its linear equation isl：y=kx+b；
Step 3：The chromaticity coordinates of target setting light source below blackbody curve and color tolerance SDCM≤3, so the color of target light source Coordinate is located at straight linelBelow blackbody curve and make on one section of line segment L of SDCM≤3；
Step 4：2 light source (S are chosen in 5 full spectrum white-light light sources described in step 11、S2), the colour temperature difference of 2 light sources For 3468 K and 3953 K, the chromaticity coordinates of its chromaticity coordinates distance objective light source is nearer, and S2On the chromaticity coordinates left side of target light source And S1On the right of target light source chromaticity coordinates；
Step 5：2 light source (S selected by step 41、S2) for being mixed to get target light source, the color of selected 2 light sources If the coordinate line M and line segment L described in step 3 intersects at point N, point N is the white light chromaticity coordinates of target light source and correspondence one Individual color tolerance SDCM；
Step 6：Chromaticity coordinates point N can be by with 2 light source (S selected in the logical ratio blend step 4 of certain light1、S2) obtain, ask Solution meets the S of chromaticity coordinates point N1、S2The logical ratio of light, solve S1:S2=1:1, the chromaticity coordinates of the target light source being now mixed to get For (0.393,0.381) below the blackbody curve in CIE 1931xy chromaticity diagraies, colour temperature is 3706 K, and color rendering index Ra is 96, color rendering index R1 R15 are followed successively by R1=99, R2=98, R3=94, R4=94, R5=98, R6=97, R7=95, R8=92, R9=86, R10=97, R11=93, R12=95, R13=100, R14=96, R15=98, color tolerance SDCM is 1.58, and parameters meet requirement, Its relative spectral power distribution curve is as shown in Figure 6；
Step 7：2 light source institute light requirements are obtained using pulse width modulated dimmer to lead to, deisgn product obtains satisfactory target Light source.
The full spectrum white-light light source optical color parameter of table 1
。

Claims (4)

  1. It is 1. a kind of to carry out being segmented the method that colour temperature is adjusted using multiple full spectrum white-light light sources, it is characterised in that：By being segmented choosing Take and mix the target light source that multiple full spectrum white-light light sources obtain high white light preference under required colour temperature, and color tolerance SDCM≤ 3, comprise the following steps that：
    Step 1：Choose N number of full spectrum white-light light source：S1, S2, S3..., SN, its colour temperature is respectively T1, T2, T3... TN, 1500 K ≤ T1 < T2 < T3 < … < TN ≤ 8500 K, and blackbody curve of its chromaticity coordinates in CIE 1931xy chromaticity diagraies point Cloth；N≥3；
    Step 2：Colour temperature T needed for target setting light sourcet, 2000 K< Tt<8000 K, try to achieve this colour temperature in CIE 1931xy Blackbody curve in chromaticity diagram isotemperature line corresponding nearby, its linear equation isl：y=kx+b；
    Step 3：The chromaticity coordinates of target setting light source below blackbody curve and color tolerance SDCM≤3, so the color of target light source Coordinate is positioned at straight line l is below blackbody curve and makes on one section of line segment L of SDCM≤3；
    Below in two kinds of situation：
    The first situation：
    Step 4：3 light source (S are chosen in N number of full spectrum white-light light source described in step 1i、Si+1And Si+2), meet：(1) 3 The chromaticity coordinates of the chromaticity coordinates distance objective light source of light source is nearer；The chromaticity coordinates of (2) 3 light sources at least one in target light source The chromaticity coordinates left side and at least one on the right of target light source chromaticity coordinates；
    Step 5：3 light sources selected by step 4 are used to be mixed to get target light source, and the chromaticity coordinates of 3 selected light sources connects Line surrounds a triangle, and a part of the line segment L described in step 3 should be at this triangle interior, intercept this portion of line segment L It is divided into line segment Lt, line segment LtOn each chromaticity coordinates point, be all the optional white light chromaticity coordinates of target light source and correspondence one Different color tolerances SDCM；
    Step 6：Line segment LtOn all chromaticity coordinates points can be by with 3 selected in logical ratio blend step 4 of not sharing the same light Light source Si、Si+1And Si+2Obtain, for line segment LtOn different chromaticity coordinates points be the different coordinate points of color tolerance SDCM, with unusual Value equation solution meets the S of the chromaticity coordinates pointi、Si+1And Si+2The logical ratio of light, and calculate color tolerance SDCM under different proportion, General colour rendering index Ra and special colour rendering index R1 R15；
    Step 7：According to required color tolerance SDCM, general colour rendering index Ra and special colour rendering index R1 R15, choose corresponding Si、Si+1And Si+2The logical ratio of light, each light source institute light requirement is obtained using pulse width modulated dimmer and is led to, deisgn product is obtained Satisfactory target light source；
    Second situation：
    Step 4：2 light sources are chosen in N number of full spectrum white-light light source described in step 1：Si、Si+1, meet：(1) 2 light source The chromaticity coordinates of chromaticity coordinates distance objective light source is nearer；The chromaticity coordinates of (2) 2 light sources has a chromaticity coordinates in target light source left Side and another on the right of target light source chromaticity coordinates；
    Step 5：2 light sources selected by step 4 are used to be mixed to get target light source, and the chromaticity coordinates of 2 selected light sources connects If the line M and line segment L described in step 3 intersects at point N, point N is one color tolerance of the white light chromaticity coordinates of target light source and correspondence Difference SDCM；
    Step 6：Chromaticity coordinates point N can be by with 2 light source (S selected in the logical ratio blend step 4 of certain lighti、Si+1) obtain, ask Solution meets the S of chromaticity coordinates point Ni、Si+1The logical ratio of light, and calculate color tolerance SDCM, general colour rendering index Ra and special colour developing and refer to Number R1 R15；
    Step 7：2 light source institute light requirements are obtained using pulse width modulated dimmer to lead to, deisgn product obtains satisfactory target Light source.
  2. 2. method according to claim 1, it is characterised in that the target light source for obtaining, its colour temperature range of accommodation is 2000 −8000 K。
  3. 3. method according to claim 1, it is characterised in that the target light source for obtaining, the color tolerance of its white light chromaticity coordinates SDCM≤3 and the lower section of the blackbody curve in CIE 1931xy chromaticity diagraies, with more preferable white light preference.
  4. 4. method according to claim 1, it is characterised in that the target light source for obtaining, under every color temperature, every SDCM The target light source that colour mixture is obtained, its general colour rendering index Ra >=95, color rendering index R1 R8 >=90, special colour rendering index R9 R15 At least 5 >=90.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114941829A (en) * 2021-02-17 2022-08-26 朗德万斯公司 Lighting device for generating white mixed light with controllable spectral characteristics
US20220290840A1 (en) * 2019-10-29 2022-09-15 Signify Holding B.V. High intensity light source with high cri and r9

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CN101801139A (en) * 2010-03-25 2010-08-11 东华大学 Method for obtaining white light with high color development and adjustable color temperature by red, yellow, green and blue LED assembly
CN102141210A (en) * 2010-02-01 2011-08-03 深圳市光峰光电技术有限公司 High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation
CN103104833A (en) * 2011-11-14 2013-05-15 普朗克股份有限公司 Color temperature regulating device for illumination, illumination apparatus, and method of regulating color temperature
CN104409608A (en) * 2014-11-12 2015-03-11 上海亚明照明有限公司 High-voltage white-light LED with high mesopic luminous efficiency and acquisition method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102141210A (en) * 2010-02-01 2011-08-03 深圳市光峰光电技术有限公司 High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation
CN101801139A (en) * 2010-03-25 2010-08-11 东华大学 Method for obtaining white light with high color development and adjustable color temperature by red, yellow, green and blue LED assembly
CN103104833A (en) * 2011-11-14 2013-05-15 普朗克股份有限公司 Color temperature regulating device for illumination, illumination apparatus, and method of regulating color temperature
CN104409608A (en) * 2014-11-12 2015-03-11 上海亚明照明有限公司 High-voltage white-light LED with high mesopic luminous efficiency and acquisition method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220290840A1 (en) * 2019-10-29 2022-09-15 Signify Holding B.V. High intensity light source with high cri and r9
US11767966B2 (en) * 2019-10-29 2023-09-26 Signify Holding B.V. High intensity light source with high CRI and R9
CN114941829A (en) * 2021-02-17 2022-08-26 朗德万斯公司 Lighting device for generating white mixed light with controllable spectral characteristics

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