Full spectrum lighting system

Abstract

The present application discloses a full spectrum lighting system, comprising a full spectrum device, a light supplementing unit, and a control unit. The full spectrum device comprises at least three light-emitting units having different correlated color temperatures, each light-emitting unit corresponds to a source color temperature node, and the source color temperature nodes are distributed in a CIE 1931 chromaticity diagram, so that the chromaticity linear distance L1 between the maximum color temperature node and the minimum color temperature node is not less than 0.04, the chromaticity linear distances between adjacent color temperature nodes are equal, and the chromaticity linear distance L2 between each color temperature node and a standard spectral node on a daylight locus corresponding to the node is not greater than 0.02. The light supplementing unit exhibits a spectrum having a dominant wavelength between 500 nm and 600 nm and a full width at half maximum between 10 nm and 200 nm. The control unit controls the input light power ratio of each light-emitting unit, so that the full spectrum device achieves blended light output between any two source color temperature nodes, and when forming blended light color temperature nodes, controls the input light power of the light supplementing unit, making the spectrum of blended light approximate the daylight locus.

Description

Full spectrum lighting system TECHNICAL FIELD

[0001] The present application relates to the field of LED (light-emitting diode), in particular to a full spectrum lighting system. BACKGROUND

[0002] The concept of full spectrum is a branch with extremely long-term prospects in the field of lighting LED, the idea of which is that the closer the emission spectrum is to natural light, the better the health lighting effect on the human body. The concept of rhythm is an important branch newly derived in the development process of healthy lighting, the idea of which is that the color temperature changes with the switching of different application scenarios to adapt to the physiological rhythm of the human body. The current full spectrum LED light source on the market mainly realizes the adjustment of color temperature in a relatively narrow color temperature range based on the double color temperature adjustment scheme, and does not pay attention to the indicators such as color rendering and spectral continuity of the synthesized spectrum, resulting in the existing full spectrum LED light source which can only adjust the color temperature in a relatively narrow color temperature range, and the spectral continuity is poor, the blue light peak is high, and the similarity with natural light is low. SUMMARY

[0003] In view of the above-mentioned deficiencies of the related art, the purpose of the present application is to provide a full spectrum lighting system, which aims to solve the problem that the existing full spectrum LED light source can only adjust the color temperature in a relatively narrow color temperature range, and has poor spectral continuity, high blue light peak, and low similarity with natural light.

[0004] In order to solve the above technical problems, the present application provides a full spectrum lighting system, a full spectrum lighting system, comprising a full spectrum device, a light supplementing unit and a control unit, wherein:

[0005] The full spectrum device comprises at least three light emitting units with different correlated color temperatures, each light emitting unit corresponds to a source color temperature node, and the source color temperature nodes are distributed in the CIE 1931 chromaticity diagram, so that the chromaticity straight line distance L1 between the maximum and minimum color temperature nodes is not less than 0.04, the chromaticity straight line distance between adjacent color temperature nodes is equal, and the chromaticity straight line distance L2 between each color temperature node and the standard spectrum node on the daylight locus corresponding to the node is not greater than 0.02;

[0006] The light supplementing unit comprises an LED device, the LED device has a light emitting spectrum with a main wavelength between 500nm and 600nm and a half-width between 10nm and 200nm; and

[0007] The control unit sets the input light power proportion of the three or more light emitting units in a numerical manner, so that the full spectrum device realizes mixed light output between any two source color temperature nodes, and controls the input light power of the light supplementing unit when forming a mixed light color temperature node, so that the spectrum of the mixed light approaches the daylight locus, and all input power proportions are normalized to make the total power one. Advantages

[0008] The present application provides a full spectrum lighting system, comprising a full spectrum device, a light supplementing unit and a control unit, the full spectrum device has good spectral continuity at each source color temperature node, low blue light peak and high similarity to natural light; each source color temperature node corresponding to each light emitting unit in the CIE coordinate system satisfies the following conditions: the straight line distance L1 between the source color temperature node with the largest color temperature value and the source color temperature node with the smallest color temperature value is greater than or equal to 0.04, so as to ensure sufficient color temperature adjustment width; the straight line distance of adjacent source color temperature nodes is equal, so as to ensure the uniformity of mixed light; and the straight line distance L2 between each source color temperature node and the standard spectrum color temperature node corresponding to the same color temperature value on the daylight locus is less than or equal to 0.02, so as to ensure that the CIE of the synthesized light does not deviate too far from the daylight locus when mixed light. The control unit is configured to control the input power proportion of at least three light emitting units respectively, so as to control the full spectrum device to emit light at each source color temperature node and the mixed light color temperature node between adjacent source color temperature nodes. It can be seen that the full spectrum lighting system can adjust the color temperature in a wide color temperature range, has good spectral continuity, low blue light peak and high similarity to natural light. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1-1 is a schematic diagram of the spectrum of a source color temperature 2700K of an existing full spectrum LED light source;

[0010] Fig. 1-2 is a schematic diagram of the spectrum of a source color temperature 6500K of an existing full spectrum LED light source;

[0011] Fig. 1-3 is a schematic diagram of the spectrum of a synthesized color temperature 4000K of an existing full spectrum LED light source;

[0012] Fig. 1-4 is a schematic diagram of the contrast spectrum of a source color temperature 2700K of an existing full spectrum LED light source;

[0013] Fig. 1-5 is a schematic diagram of the contrast spectrum of a source color temperature 6500K of an existing full spectrum LED light source;

[0014] Fig. 1-6 is a schematic diagram of the contrast spectrum of a synthesized color temperature 4000K of an existing full spectrum LED light source;

[0015] Fig. 2 is a schematic diagram of a CIE coordinate system provided by an embodiment of the present application;

[0016] Fig. 3 is a schematic diagram of a full spectrum device structure according to an embodiment of the present application;

[0017] Fig. 4 is a schematic diagram of a full spectrum device structure according to an embodiment of the present application;

[0018] Fig. 5-1 is a comparative spectrum diagram of a source color temperature node of 1700K according to an embodiment of the present application;

[0019] Fig. 5-2 is a comparative spectrum diagram of a source color temperature node of 3000K according to an embodiment of the present application;

[0020] Fig. 5-3 is a comparative spectrum diagram of a source color temperature node of 5000K according to an embodiment of the present application;

[0021] Fig. 5-4 is a comparative spectrum diagram of a source color temperature node of 13000K according to an embodiment of the present application;

[0022] Fig. 5-5 is a CIE diagram of each source color temperature node and a mixed light color temperature node on a sunlight trajectory according to an embodiment of the present application;

[0023] Fig. 6-1 is a comparative spectrum diagram of a mixed light color temperature node of 2200K according to an embodiment of the present application;

[0024] Fig. 6-2 is a comparative spectrum diagram of a mixed light color temperature node of 2500K according to an embodiment of the present application;

[0025] Fig. 6-3 is a comparative spectrum diagram of a mixed light color temperature node of 2700K according to an embodiment of the present application;

[0026] Fig. 6-4 is a comparative spectrum diagram of a mixed light color temperature node of 3500K according to an embodiment of the present application;

[0027] Fig. 6-5 is a comparative spectrum diagram of a mixed light color temperature node of 4000K according to an embodiment of the present application;

[0028] Fig. 6-6 is a comparative spectrum diagram of a mixed light color temperature node of 4500K according to an embodiment of the present application;

[0029] Fig. 6-7 is a comparative spectrum diagram of a mixed light color temperature node of 5700K according to an embodiment of the present application;

[0030] Fig. 6-8 is a comparative spectrum diagram of a mixed light color temperature node of 6500K according to an embodiment of the present application;

[0031] Fig. 6-9 is a comparative spectrum diagram of a mixed light color temperature node of 8000K according to an embodiment of the present application;

[0032] Fig. 7-1 is a spectrum diagram of a first light supplementing unit according to an embodiment of the present application;

[0033] Fig. 7-2 is a comparison diagram of CIE points of the mixed light color temperature node 4000K before and after light supplement provided by the second embodiment of the present application;

[0034] Fig. 7-3 is a diagram of CIE points of the light supplement after each source color temperature node and the mixed light color temperature node on the sunlight track provided by the second embodiment of the present application;

[0035] Fig. 7-4 is a comparison diagram of light spectrum of the source color temperature node two-way mixed light and the source color temperature node combined with the first light supplement unit three-way mixed light provided by the second embodiment of the present application;

[0036] Fig. 7-5 is a connection line diagram in the CIE coordinate system provided by the second embodiment of the present application;

[0037] Fig. 8-1 is a comparison diagram of the corrected mixed light color temperature node 2200K provided by the second embodiment of the present application;

[0038] Fig. 8-2 is a comparison diagram of the corrected mixed light color temperature node 2500K provided by the second embodiment of the present application;

[0039] Fig. 8-3 is a comparison diagram of the corrected mixed light color temperature node 2700K provided by the second embodiment of the present application;

[0040] Fig. 8-4 is a comparison diagram of the corrected mixed light color temperature node 3500K provided by the second embodiment of the present application;

[0041] Fig. 8-5 is a comparison diagram of the corrected mixed light color temperature node 4000K provided by the second embodiment of the present application;

[0042] Fig. 8-6 is a comparison diagram of the corrected mixed light color temperature node 4500K provided by the second embodiment of the present application;

[0043] Fig. 8-7 is a comparison diagram of the corrected mixed light color temperature node 5700K provided by the second embodiment of the present application;

[0044] Fig. 8-8 is a comparison diagram of the corrected mixed light color temperature node 6500K provided by the second embodiment of the present application;

[0045] Fig. 8-9 is a comparison diagram of the corrected mixed light color temperature node 8000K provided by the second embodiment of the present application;

[0046] Fig. 9-1 is a comparison diagram of the source color temperature node 2200K provided by the third embodiment of the present application;

[0047] Fig. 9-2 is a comparison diagram of the source color temperature node 4000K provided by the third embodiment of the present application;

[0048] Fig. 9-3 is a comparative spectrum diagram of the source color temperature node 8000K provided by the third embodiment of the present application;

[0049] Fig. 9-4 is a CIE diagram of the source color temperature nodes and the mixed light color temperature nodes on the sunlight locus provided by the third embodiment of the present application;

[0050] Fig. 10-1 is a spectrum diagram of the first light supplement unit provided by the third embodiment of the present application;

[0051] Fig. 10-2 is a CIE diagram of the source color temperature nodes and the mixed light color temperature nodes on the sunlight locus provided by the third embodiment of the present application;

[0052] Fig. 11-1 is a comparative spectrum diagram of the corrected mixed light color temperature node 2500K provided by the third embodiment of the present application;

[0053] Fig. 11-2 is a comparative spectrum diagram of the corrected mixed light color temperature node 2700K provided by the third embodiment of the present application;

[0054] Fig. 11-3 is a comparative spectrum diagram of the corrected mixed light color temperature node 3000K provided by the third embodiment of the present application;

[0055] Fig. 11-4 is a comparative spectrum diagram of the corrected mixed light color temperature node 3500K provided by the third embodiment of the present application;

[0056] Fig. 11-5 is a comparative spectrum diagram of the corrected mixed light color temperature node 4500K provided by the third embodiment of the present application;

[0057] Fig. 11-6 is a comparative spectrum diagram of the corrected mixed light color temperature node 5000K provided by the third embodiment of the present application;

[0058] Fig. 11-7 is a comparative spectrum diagram of the corrected mixed light color temperature node 5700K provided by the third embodiment of the present application;

[0059] Fig. 11-8 is a comparative spectrum diagram of the corrected mixed light color temperature node 6500K provided by the third embodiment of the present application;

[0060] Fig. 12 is a flow diagram of the manufacturing method of the full spectrum illumination system provided by the third embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Embodiments

[0063] The existing full-spectrum LED light source can only adjust the color temperature in a narrow color temperature range, and has the problems of poor continuity of the spectrum, high blue light peak value, and low similarity to natural light. In order to facilitate understanding, the following will be illustrated by combining the process in which the inventor found the problem in the research and development process. Here, taking the adjustment scheme of a common 2700K-6500K Ra90 dual-color temperature full-spectrum LED light source on the market as an example, it can only adjust the color temperature in a narrow color temperature range of 2700K to 6500K, and it focuses on pursuing parameters such as Ra and R9 in the CIE (English: International Commission on illumination, French: Commission Internationale de l'Eclairage, using French for short CIE, translated into Chinese as "International Commission on Illumination") evaluation system of color. FIGS. 1-1 to 1-3 are the Ra9 spectrum diagrams of the source color temperature (i.e. the color temperature of the light without mixing) 2700K, 6500K and the synthetic color temperature (i.e. the color temperature of the light obtained by mixing light) 4000K, respectively. The typical Ra parameters are shown in Table 1 below. In FIGS. 1-1 to 1-3, the abscissa is the wavelength, and the ordinate is the relative spectral intensity value. The relative spectral intensity refers to the spectral diagram generated by normalizing the spectrum with the highest peak value of the spectral intensity as the basis. The spectrum diagram of Ra9 referred to in the following of this embodiment is also generated based on the same principle, which will not be described hereinafter.

[0064] Table 1

[0065]

[0066] The above dual-color temperature full-spectrum LED light source pursues the Ra and R9 parameters, and ignores the continuity of the spectrum and the similarity with the natural light spectrum. For the convenience of understanding the Rf (fidelity, or called color gamut value) and Rg (saturation) evaluation system of the IES (Illuminating Engineering Society of North America) TM-30-15 standard, the three typical spectra shown in FIG. 1-1 to FIG. 1-3 are respectively compared with the compared spectrum into the same SPD (Spectral Power Distribution) figure, and the comparison figure is shown in FIG. 1-4 to FIG. 1-6, and the Rf parameter measured under the TM-30-15 standard is shown in Table 2. The Reference source in FIG. 1-4 to FIG. 1-6 is the reference natural light, and the spectrum figure of the compared spectrum and the comparison spectrum is generated after energy normalization with the energy of the compared spectrum (i.e. the Reference source in the figure) as 1 as the reference; the spectrum comparison figure involved in the subsequent text of the embodiment is generated by the same principle, and will not be described hereinafter.

[0067] Table 2

[0068]

[0069] In the TM-30-15 standard, Rf is used to represent the similarity of each standard color under the illumination of the test light source compared with the reference light source, the number is from 0 to 100, and the higher the value, the better the color fidelity. Rf equal to 100 is the maximum value, which represents no color difference with the color under the natural light source, and the color effect is realistic; Rf equal to 0 is the minimum value, which represents the maximum color difference with the color under the natural light source, and the color effect is distorted. Rg is used to represent the saturation degree of each standard color under the illumination of the test light source compared with the reference light source, and the index 100 represents the best saturation. Rg equal to 100 represents that the saturation of the light source is the same as that of the natural light, and the color saturation is moderate; Rg greater than 100 represents that the light source is over-saturated; Rg less than 100 represents that the color saturation of the light source is insufficient.

[0070] From the spectrum comparison in FIG. 1-4 to FIG. 1-6, it can be seen that the spectrum continuity and the similarity with the natural light (i.e. the Rf parameter) of the above dual-color temperature full-spectrum LED light source compared with the spectrum of the background reference natural light are poor, and the blue light peak is high.

[0071] For the convenience of understanding the continuity, the concept of ASD (Average Spectral Difference) is introduced here, ASD represents the ratio of the spectral difference area of the measured light source and the standard light source to the spectral area of the standard light source, which is an index for measuring the spectral continuity, the smaller the better, and the minimum value is 0. The calculation of ASD value is as follows formula (1):

[0072] ASD = ∫ λ2 λ1 |A(λ)-S(λ)| / S(λ)dλ …………(1);

[0073] Wherein A(λ) is the target spectrum, S(λ) is the natural light spectrum. Let λ1=400nm,

[0074] λ2=700nm, the ASD values of the three color temperature values calculated according to the above formula (1) in table 2 are shown in table 3.

[0075] Table 3

[0076]

[0077] From table 3, it can be seen that the ASD values of the above double color temperature full spectrum LED light source are far from the natural light. That is, compared with the target spectrum of natural light, the similarity (also called fitting degree) is still not good enough.

[0078] It can be seen that the continuity of the spectrum of the existing double color temperature full spectrum LED light source is poor, the blue light peak value is high, and the similarity with natural light is also poor, and the color temperature can only be adjusted in a narrow color temperature range. Based on this, the present application hopes to provide a solution to the above technical problems, and the detailed content will be described in the subsequent embodiments.

[0079] For the convenience of understanding the concept of rhythm, the color temperature change scene of sunlight in a day time range is exemplified below, see table 4. In this example, when the color temperature of the light output of the full spectrum lighting system changes according to the color temperature change of sunlight in a day time range, it can adapt to the physiological rhythm of human body. Of course, it should be understood that the embodiment is not limited to the color temperature change scene of sunlight in a day time range, and is also applicable to other various scenes requiring color temperature change, for example, the color temperature can be changed according to the color temperature requirement of the current illuminated object, which is not limited herein.

[0080] Table 4

[0081]

[0082] For the convenience of understanding the technical solutions of the present embodiment, the CIE coordinate system (see Figure 2, i.e. CIE 1931 chromaticity coordinates) referred to in the following text of the present embodiment is briefly described as follows. In Figure 2, the horizontal axis is x, representing the relative value related to red, and the vertical axis is y, representing the relative value related to green. A color is represented by (x, y), which is called a color coordinate. The colors in Figure 2 include all the colors that can be obtained in nature. The overall shape is tongue-shaped, and it is sometimes also called "tongue-shaped curve". The closed area surrounded by the tongue-shaped peripheral curve and the bottom straight line. The tongue-shaped peripheral curve is the color locus of all visible monochromatic light, and each point represents the color of a monochromatic light of a certain wavelength. Next to the curve, the corresponding wavelengths of some characteristic color points are marked. In Figure 2, the E point on the sunlight locus is the coordinate point of the equal-energy white light point, which is formed by mixing three primary colors with the same stimulus light energy, but the light fluxes of the three are not equal. The color temperature value CCT (Correlated Color Temperature) is 5400K. The A point is a chromaticity coordinate point of a standard white light source specified by CIE, and the color temperature value CCT is 2856. The B point is a standard light source coordinate point specified by CIE, and the color temperature value CCT is 4874K, representing direct sunlight. The C point is a standard daylight light source coordinate point (daylight) confirmed by CIE, and the color temperature value CCT is 6774K. The D point is sometimes also marked as D light source, which is called typical daylight or reorganized daylight, and the color temperature value is 6500K. In the present embodiment, the sunlight locus and the blackbody locus are the same concept, representing the curve composed of CIE points of sunlight at different color temperatures. The continuous color point data of the sunlight locus part compiled in the present text is shown in Table 5 as follows:

[0083] Table 5

[0084]

[0085] The present embodiment provides a full-spectrum lighting system which can adjust the color temperature in a wide color temperature range, has good spectral continuity, low blue light peak value, and high similarity to natural light. The full-spectrum lighting system comprises a control unit and a full-spectrum device. The full-spectrum device comprises at least three light emitting units 1 corresponding to different source color temperature nodes. The color temperature values of the source color temperature nodes are different, and the average ASD value of the full-spectrum device at each source color temperature node is less than 25%, the average Rf value is greater than 85, and the average Ra value is greater than 90, so as to ensure that the full-spectrum device has good spectral continuity, low blue light peak value, and high similarity to natural light at each source color temperature node.

[0086] In the embodiment, each light emitting unit 1 corresponds to a source color temperature node, and the source color temperature node is the color temperature value node of the light emitted by the corresponding light emitting unit 1, that is, the light emitting unit 1 does not need to mix light with other light emitting units 1. The light emitting unit 1 in the embodiment can include at least one of an LED chip and an LED chip packaging device. Each light emitting unit 1 can include only a single LED chip or LED chip packaging device, or can be set to include two or more single LED chips or LED chip packaging devices according to requirements. The source color temperature node corresponding to each light emitting unit 1 can be the color temperature value node of the direct light emitted by the LED chip and / or LED chip packaging device included therein, or can be the color temperature value node obtained after the light emitted by the at least two LED chips and / or LED chip packaging devices included therein is mixed.

[0087] In the embodiment, the source color temperature nodes corresponding to each light emitting unit 1 satisfy the following conditions in the CIE coordinate system: the straight line distance L1 between the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value is greater than or equal to 0.04, so as to ensure sufficient color temperature adjustment width; the straight line distances of adjacent source color temperature nodes are equal, so as to ensure the uniformity of subsequent light mixing, that is, at least one intermediate value source color temperature node is further arranged between the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value, and the straight line distance L2 between each source color temperature node and the standard spectrum color temperature node corresponding to the same color temperature value on the daylight locus is less than or equal to 0.02, so as to ensure that the CIE of the synthesized light during subsequent light mixing does not deviate too far from the daylight locus. Wherein, the straight line distance L between any two color temperature nodes o and u in the CIE coordinate system is ab The calculation formula is shown in the following formula (2):

[0088] L ab =[(X o -X u ) 2 +(Y o -Y u ) 2 ] -2 …………………………(2);

[0089] In formula (2), X o and Y o are the coordinate values of the color temperature node o, and X u and Y u are the coordinate values of the color temperature node u.

[0090] The control unit is configured to control the input power ratio of at least three light emitting units (i.e. source color temperature nodes) respectively, so as to control the light emitting of the full-spectrum device at each source color temperature node and the mixed light color temperature node between adjacent source color temperature nodes. Thus, the full-spectrum device can realize rhythm control between the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value, and has good spectral continuity, low blue light peak value and high similarity to natural light. It should be understood that, in the full-spectrum lighting system set according to the above rules in the embodiment, the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value can be set according to requirements to realize control of the color temperature range, the number (i.e. the density) of the source color temperature nodes with intermediate color temperature values between the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value and the L2 value can be flexibly set to ensure that the synthesized light does not deviate too far from the daylight track during subsequent light mixing, and the light emitting of the full-spectrum device at each source color temperature node and the mixed light color temperature node between adjacent source color temperature nodes is realized through precise control of the input power ratio of at least three light emitting units, so as to realize rhythm control.

[0091] For ease of understanding, the following describes Example One shown in FIG. 4. FIG. 4 shows an example of a full-spectrum device, which includes four light emitting units 11 to 14. It is assumed that the source color temperature node a1 corresponding to the light emitting unit 11 has the minimum color temperature value, the source color temperature node a4 corresponding to the light emitting unit 14 has the maximum color temperature value, the source color temperature nodes a2 and a3 corresponding to the light emitting units 12 and 13 respectively are intermediate value source color temperature nodes between the source color temperature node a1 and the source color temperature node a4, and satisfy the linear distance L a1a4 between the source color temperature node a1 and the source color temperature node a4 is greater than or equal to 0.04, the linear distances of adjacent source color temperature nodes are equal, i.e. L a1a2 = L a2a3 = L a3a4 , and the linear distance L2 between each source color temperature node a1 to a4 and the standard spectrum color temperature node on the daylight track corresponding to the same color temperature value is less than or equal to 0.02.

[0092] In this example, the source color temperature nodes a1 to a4 are taken as 1700K, 3000K, 5000K and 13000K respectively. In this example, rhythm control can be realized in the color temperature range of 1700K-13000K. The typical spectrum diagrams of the four light emitting units 11 to 14 corresponding to the source color temperature nodes 1700K, 3000K, 5000K and 13000K respectively are shown in FIGS. 5-1 to 5-4, and the typical parameters are shown in Table 6 below:

[0093] Table 6

[0094]

[0095] In the example, the four source color temperature nodes a1 to a4 are mixed by the control unit to obtain adjacent two source color temperature nodes, for example, the mixed color temperature nodes between the source color temperature node a1 and the source color temperature node a2 are 2200K, 2500K, 2700K, the mixed color temperature nodes between the source color temperature node a2 and the source color temperature node a3 are 3500K, 4000K, 4500K, and the mixed color temperature nodes between the source color temperature node a3 and the source color temperature node a4 are 5700K, 6500K, 8000K. As an example, the input power ratio (normalized) of the four light emitting units at each color temperature node is shown in Table 7. The CIE points of each source color temperature node and mixed color temperature node on the daylight locus are shown in FIG. 5-5, and the typical spectral diagram of each mixed color temperature node is shown in FIGS. 6-1 to 6-9, and the typical parameter table is shown in Table 8 below:

[0096] Table 7

[0097]

[0098]

[0099] Table 8

[0100]

[0101] As can be seen from FIG. 5-5 and Table 8, the full spectrum lighting system provided in Example 1 can realize mixed light in the range of 1700K-13000K (i.e. can realize rhythm control in this range), and can make each source color temperature node and each mixed color temperature node move along the daylight locus in this color temperature range. It can be seen that the range of color temperature adjustment is wide, the spectral continuity is good, the blue light peak is low, and the similarity to natural light is high.

[0102] It should be understood that the above example 1 is only an understanding example, and according to the needs, the intermediate value source color temperature node can be added on the basis of example 1 to further improve the rhythm control effect. Generally speaking, the more dense the intermediate value source color temperature node, the better the rhythm control effect. The intermediate value source color temperature node can also be appropriately reduced to simplify the structure of the full spectrum lighting system and reduce the cost on the basis of meeting the rhythm control effect. According to the needs, the source color temperature node can also be added or reduced on the basis of example 1, and / or the color temperature value of at least one of the maximum source color temperature node, the minimum source color temperature node, and the intermediate value source color temperature node can be changed, so as to meet the rhythm control demand in the corresponding application scene.

[0103] In the embodiment, to further ensure the rhythm control effect of the full-spectrum lighting system, the ASD average value of the full-spectrum device at each source color temperature node can be less than 20%, the Rf average value can be greater than 90, and the Ra average value can be greater than 95; and / or the straight line distance L2 between each source color temperature node and the standard spectrum color temperature node corresponding to the same color temperature value on the daylight locus is less than or equal to 0.01.

[0104] In the embodiment, to further ensure the rhythm control effect of the full-spectrum lighting system and improve the color temperature adjustment range, the straight line distance L1 between the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value is greater than or equal to 0.08, and / or the color temperature value of each source color temperature node is between 1000K and 20000K.

[0105] In the embodiment, to simplify the structure of the full-spectrum lighting system and reduce the complexity of its control, each light emitting unit included in the full-spectrum lighting system can be a single-color temperature light emitting unit, and each light emitting unit can be controlled independently of each other. Embodiment

[0106] The embodiment is based on the embodiment one, and the full-spectrum lighting system further includes a light supplement unit that can supplement light for the corresponding mixed light color temperature node of the full-spectrum device; the control unit is further configured to control the input power ratio of the light supplement unit according to the input power ratio corresponding relationship between the light supplement unit and each source color temperature node when the full-spectrum device emits light at the mixed light color temperature node, so as to supplement light at the corresponding mixed light color temperature node and make the CIE point of the mixed light color temperature node approach the daylight locus, thereby further improving the spectral continuity and the similarity to natural light of the full-spectrum lighting system and reducing the blue light peak value. The light supplement unit can be, but is not limited to, a single-color light supplement unit.

[0107] In the embodiment, the light supplement unit can supplement light in the main wavelength range of 400nm-700nm. The main wavelength of the light emitted by the light supplement unit can be flexibly set according to the main wavelength range of the light supplement. The following takes the example of setting the light supplement in the main wavelength range of 500nm-600nm for targeted light supplement. In this example, the light supplement unit includes a first light supplement unit, the half-wave width of the first light supplement unit is 10nm to 200nm, the main wavelength is 500nm to 600nm, and the peak wavelength is at least one N-band of the mixed light color temperature node in the main wavelength range of 500nm to 600nm, and the N-band corresponds to the N-spectral difference value D DDref of the standard spectrum color temperature node corresponding to the same color temperature value of the mixed light color temperature node on the daylight locus, and the selected maximum spectral difference value MAXD DDref corresponds to the peak wavelength lp of the target band.

[0108] The step length of each waveband is d, N = 100 / d and is rounded, the end value lZ of the previous waveband is the starting value lq of the next waveband, and the difference between lZ and lq is d. The minimum value of lq is 500 nm, and the maximum value of lZ is 600 nm. The spectral difference value D of the mixed light color temperature node in a waveband DDref Referring to the following formula (3):

[0109] D DDref = ASD=∫λZ λq ∣A(λ)-S(λ)∣ / S(λ)dλ………………(3);

[0110] In the above formula (3), A(l) is the spectrum of the mixed light color temperature node in the lq to lZ waveband, and S(l) is the spectrum of the standard spectrum color temperature node corresponding to the mixed light color temperature node in the lq to lZ waveband. The corresponding relationship between lp and the maximum spectral difference value MAXD DDref of the target waveband is: lZ-5nm≤lp≤lZ+5nm.

[0111] In this embodiment, the value of the step length d is greater than or equal to 1 nm and less than or equal to 5 nm. This value can ensure both selection accuracy and coverage of a larger range as much as possible. For example, the value of the step length d can be 1 nm, 2 nm, 3 nm, etc.

[0112] In this embodiment, only one first light supplementing unit can be provided, i.e., all mixed light color temperature nodes of the full-spectrum lighting system share one first light supplementing unit, so that the structure of the full-spectrum lighting system can be simplified, the control complexity can be reduced, and the cost can be reduced. Of course, in some examples, each mixed light color temperature node between every two adjacent source color temperature nodes can share one first light supplementing unit, i.e., each mixed light color temperature node corresponds to one first light supplementing unit. Each mixed light color temperature node can correspond to one first light supplementing unit. Although this structure can improve the light mixing effect to some extent, the structure and control are relatively complex, and the cost is relatively high. Of course, on this basis, the first light supplementing unit can be set according to other rules according to requirements, which will not be described here.

[0113] In this embodiment, all mixed light color temperature nodes share one first light supplementing unit as an example. At this time, the peak wavelength of the first light supplementing unit can be determined according to any one of the following three rules, but is not limited to the following three rules:

[0114] Rule one: a mixed light color temperature node is selected according to a preset rule, and the peak wavelength of the first light supplementing unit is set as the N spectral difference values D DDref of the N wavebands in which the mixed light color temperature node has the same color temperature value as the standard spectrum color temperature node on the daylight locus within the main wavelength of 500 nm to 600 nm.DDref The peak wavelength lp corresponding to the target band, where: MAXD DDref =(ASD) 500～500+d nm DDref ASD 500～500+2d nm DDref ..., ASD 600-d～600 nm DDref This setup requires less computation and is more convenient to control.

[0115] Rule 2: Set the peak wavelength of the first supplementary lighting unit to the N spectral differences D between each mixing color temperature node and the standard spectral color temperature node with the same color temperature value on the sunlight trajectory within N bands of the main wavelength between 500nm and 600nm for each adjacent source color temperature node. DDref In the selection of the maximum spectral difference value MAXD DDref The peak wavelength lp corresponding to the target band. For example, assuming there are M color temperature mixing nodes, then calculate the N spectral differences D between each color temperature mixing node and the standard spectral color temperature node with the same color temperature value on the sunlight trajectory in N bands within the main wavelength range of 500nm to 600nm. DDref Thus, M D's are obtained. DDref Then from these M Ds DDref The largest wavelength band is then selected as the peak wavelength of the first supplementary lighting unit. This setup provides the widest coverage and offers better subsequent control.

[0116] Rule 3: Assuming there are M color temperature mixing nodes, k nodes can be selected from these M nodes according to a preset rule. Then, the corresponding MAXD can be determined based on these k color temperature mixing nodes using Rule 2 above. DDref The peak wavelength lp corresponding to the target band.

[0117] Optionally, in this embodiment, when the determined MAXD DDref After that, you can first determine the MAXD DDref If the value exceeds a preset threshold, the first supplementary lighting unit is activated; otherwise, it indicates that the current rhythm control effect is good enough, and the first supplementary lighting unit is not activated. In this case, the full-spectrum illumination system may not include the first supplementary lighting unit. For example, in this embodiment, the threshold can be set to 4% to 5%. For instance, if the threshold is set to 4%, then MAXD is determined. DDref If the threshold is greater than 4%, the first supplementary light unit is activated; if the threshold is set to 4.5%, then MAXD is checked. DDref If the value is greater than 4.5%, then the first supplementary light unit will be activated.

[0118] Of course, it should be understood that when each mixed light color temperature node corresponds to a first light supplement unit, the peak wavelength corresponding to the first light supplement unit can be determined according to the above rule one; when each adjacent two source color temperature nodes correspond to a first light supplement unit, the peak wavelength corresponding to the first light supplement unit can be determined according to any one of the above rules one to three, and at this time, the M mixed light color temperature nodes in rule two and rule three are the mixed light color temperature nodes between the adjacent two source color temperature nodes.

[0119] The first light supplement unit in the embodiment includes at least one of an LED chip and an LED chip packaging device, and the specific structure can refer to but is not limited to the above light emitting unit, which will not be described here. When the LED chip packaging device is included, it is easier to achieve a relatively wide half-wave width and a peak wavelength of each wave band after the LED chip packaging device is modulated by the phosphor and / or quantum dot, so it has the advantage of being easier to supplement the spectrum. For example, when the first light supplement unit is an LED chip packaging device, the half-wave width can be set to 10nm to 200nm, for example, it can be specifically set to 60nm to 200nm. When the first light supplement unit is an LED chip, the half-wave width can be set to 10nm to 30nm, which is relatively narrow compared to the half-wave width of the LED chip packaging device.

[0120] In the embodiment, the input power ratio corresponding relationship between the first light supplement unit and each source color temperature node is determined according to the following formula (4) and formula (5):

[0121] Φ P (p) P(X p , Y p ) + Φ A (a) A(X a , Y a ) + Φ B (b) B(X b , Y b ) = T(X t , Y t ) … … (4);

[0122] Φ A (a) A(X a , Y a ) + Φ B (b) B(X b , Y b ) = T tar (X Ttar , Y Ttar ) … … (5);

[0123] In the above formula (4) and formula (5), referring to the example shown in FIG. 7-5, P(X p , Y pA(X) represents the coordinates of the first supplementary lighting unit at the supplementary lighting color temperature node p in the CIE coordinate system. a ,Y a ) and B(X) b ,Y b T(X) represents the coordinates of the two source color temperature nodes a and b located on either side of the current mixing color temperature node in the CIE coordinate system; t Y t The coordinates of the current mixing color temperature node T, formed by combining the supplementary light color temperature node p and the two source color temperature nodes a and b in the CIE coordinate system; T tar (X) Ttar Y Ttar () represents the standard spectral color temperature node T with the same color temperature value as the current mixed light color temperature node on the sunlight trajectory. ref The coordinates of the intersection point of the line connecting the fill light color temperature node p and the lines connecting the two source color temperature nodes a and b; Φ P (p), Φ A (a) Φ B (b) represents the input power ratios (p, a, b) of the first supplementary light unit and the two light-emitting units corresponding to the two source color temperature nodes a and b, respectively.

[0124] In this embodiment, the input power ratio (p, a, b) can be obtained by using the two sets of three linear equations shown in formulas (4) and (5) above. For example, the calculation process is as follows:

[0125] According to equation (5), we set the condition for T. tar (X) Ttar Y Ttar The input values ​​are a tar and b tar Then we have:

[0126] Φ A (a) tar A (X) a ,Y a )+Φ B (b) tar B(X) b ,Y b )= T tar (X) Ttar Y Ttar =>

[0127] Φ A (a) tar ) = (T tar (X) Ttar Y Ttar )-Φ B (b) tar )B(X b ,Yb ) ) / A (X a ,Y a ),

[0128] Φ A (a tar ) = T tar (X Ttar , Y Ttar ) / A (X a ,Y a ) - B (X b ,Y b ) / A (X a ,Y a ) * Φ B (b tar ) ;

[0129] T tar (X Ttar , Y Ttar ), B (X b ,Y b ), A (X a ,Y a ) are known, so it can be simplified as:

[0130] Φ A (a tar ) = M - K Φ B (b tar ), M, K are constants, the linear relationship between a tar and b tar can be calculated, that is, given the input value of b tar , the input value of a tar can be calculated.

[0131] For equation (4), let a = a tar , b = b tar , and set the input value p of T ref (X Tref , Y Tref ) as p ref , then

[0132] Φ P (p ref ) P (X p , Y p ) + Φ A (a tar ) A (X a ,Y a ) + Φ B (b tar ) B (X b ,Y b ) = T ref(X Tref , Y Tref );

[0133] may be equivalent to T tar (X Ttar , Y Ttar ) + Φ P (p ref ) P(X p , Y p ) = T ref (X Tref , Y Tref );

[0134] then Φ P (p ref ) = [T ref (X Tref , Y Tref ) - T tar (X Ttar , Y Ttar )] / P(X p , Y p );

[0135] T ref (X Tref , Y Tref ), T tar (X Ttar , Y Ttar ), P(X p , Y p ) are known, so p ref can be calculated.

[0136] For ease of understanding, the first light supplement unit is configured in Example 1 of Embodiment 1 (i.e., FIG. 4) in the following embodiment as an example for illustration. In this example, each mixed light color temperature node shares one first light supplement unit configured according to the above rules, the main wavelength range of which is 560 nm - 570 nm, and the half-wave width range is 80 nm - 120 nm, and the spectral diagram is shown in FIG. 7-1. The input power ratio corresponding relationship of the first light supplement unit and each source color temperature node can be determined in the above manner. Due to the introduction of the first light supplement unit, a three-way input scheme is formed on each mixed light color temperature node. For example, the mixed light color temperature node 4000K can be formed by mixing light from the source color temperature nodes 3000K, 5000K and the first light supplement unit. The addition of the first light supplement unit can make the mixed light color temperature node further accurately move along the direction close to the daylight trajectory. Referring to the comparison of the mixed light color temperature node 4000K before and after the addition of the first light supplement unit shown in FIG. 7-2, it is obvious that it is closer to the daylight trajectory after the addition of the first light supplement unit. Similarly, similar effects are also achieved for other mixed light color temperature nodes. The example diagram of each mixed light color temperature node after light supplement is shown in FIG. 7-3. Compared with FIG. 5-5, each mixed light color temperature node is closer to the daylight trajectory after light supplement. That is, by adjusting the light power input of the first light supplement unit corresponding to each mixed light color temperature node, each mixed light color temperature node can accurately move along the daylight trajectory within the predetermined color temperature range.

[0137] In this embodiment, optionally, considering the spectral matching of the light emitting unit and the first light supplement unit, the input power ratio (p, a, b) obtained by the above formula (4) and formula (5) can be further corrected to improve the control effect and accuracy. In this embodiment, the input power ratio (p, a, b) is corrected by the following formula (6)

[0138] ASD T_ Tref min (p, a, b) = MIN{ ASD T_Tref (p, a, b)} [-5%, +5%] ………………… (6);

[0139] MIN{ ASD T_Tref (p, a, b)} represents that the input power ratio (p, a, b) calculated is adjusted in the range of [-5%, +5%] according to the set proportion step, and then ASD T_Tref (p, a, b) is calculated, wherein the minimum ASD T_Tref （p，a，b） value is ASD T_ Tref min (p0, a0, b0), and the corresponding (p0, a0, b0) is the corrected Φ P (p), Φ A (a), and Φ B (b).

[0140] For example, assuming the scaling step size is 1%, the correction process using formula (6) is as follows:

[0141] Make ASD T Tref (p) ref0 a ref0 b ref0 )=∫ 380 780 |T(l)-T ref (l) | / T ref (l)dl is the difference between the spectrum of the synthesized light reaching the target color point and the standard spectrum. Since T in this embodiment ref If (l) = S(l), then this difference value is ASD. T (p) ref0 a ref0 b ref0 ), limited to p ref0 , a ref0 , b ref0 If the data varies within the range of (-5%, +5%), then there is a data set {ASD}. T (p) ref0 a ref0 b ref0 )}[-5%,+5%], take the minimum value of this data set MIN{ ASD T (p) ref0 a ref0 b ref0 The optimal solution is the (p, a, b) value (p0, a0, b0) corresponding to the set of values ​​[-5%, +5%].

[0142] In principle, since there is always a phenomenon of different spectra for the same color point in the synthesized spectrum, the color point that is closest to the target spectrum is not necessarily the target color point. Therefore, seeking the optimal spectrum within a certain range (in this embodiment, it is the range of (-5%, +5%)) can further improve the effect.

[0143] The following is still based on the example of example one. Since the light mixing color temperature nodes have the introduction of the first light supplement unit spectrum, the defects of the light mixing color temperature nodes can be perfected. Still taking the typical light mixing color temperature node 4000K as an example, only 3000K, 5000K two-way source color temperature node light mixing, and 3000K, 5000K source color temperature node, first light supplement unit three-way light mixing synthesis spectrum comparison is shown in FIG. 7-4. The parameter comparison of the synthesis spectrum of the two light mixing modes is shown in Table 9. Among them, the light power value input by the first light supplement unit is corrected on the basis of the power input ratio calculated by the above formula (4) and formula (5) according to the pros and cons of the light mixing color temperature node spectrum, so that the ASD value of the synthesized spectrum of each light mixing color temperature node is higher. As can be seen from FIG. 7-4 and Table 9, after introducing the first light supplement unit light mixing, the spectral defects can be supplemented, and the values of ASD, Ra and Rf are all increased, that is, the light mixing effect of the first light supplement unit after the power input ratio correction is more close to the monochromatic temperature full spectrum. By analogy, the value of the power input ratio correction of the first light supplement unit is shown in Table 10, the spectrum of each light mixing node is shown in FIG. 8-1 to FIG. 8-9, and the typical parameters are shown in Table 11.

[0144] Table 9

[0145]

[0146] Table 10

[0147]

[0148]

[0149] Table 11

[0150]

[0151] In this embodiment, since the first light supplement unit considers the compensation spectrum range of the full domain source color temperature node and each light mixing color temperature node. Therefore, in some application scenarios, the first light supplement unit can also supplement the light for the source color temperature node that is not completely on the daylight track. For example, as shown in Table 10, for the source color temperature node 3000K which is not on the daylight track, the spectrum of the source color temperature node 3000K is also compensated by the first light supplement unit, and the power input ratio thereof on the source color temperature node 3000K is 4.0%, which can further improve the rhythm control effect of the full spectrum lighting system.

[0152] In the embodiment, when it is required to set targeted supplementary light in the main wavelength range of 400-500 nm, a second supplementary light unit can be further included, and when it is required to set targeted supplementary light in the main wavelength range of 600-700 nm, a third supplementary light unit can be further included. The second supplementary light unit and the third supplementary light unit can be configured in the manner as described above but not limited to the first supplementary light unit, and details are not described herein.

[0153] It can be seen that the full-spectrum lighting system provided in the embodiment can achieve full-spectrum effect in any color temperature range according to requirements. The parameter values of the mixed light color temperature nodes can be controlled by the specific configuration of the supplementary light unit and the light emitting unit of the full-spectrum device. For example, when the ASD average value of the full-spectrum device at each source color temperature node is less than 20%, the Rf average value is greater than 90, and the Ra average value is greater than 95, the parameter values of the mixed light color temperature nodes can also achieve the ASD average value of less than 20%, the Rf average value of greater than 90, and the Ra average value of greater than 95. The scheme has universality to achieve the transition effect of natural light and the simulation of full-color lighting effect, and simulate the color temperature change scene of sunlight throughout the day. At the same time, since the scheme has the characteristic that each input value is linearly adjusted, the complexity of the control system of the rhythm lighting can be effectively simplified, and the advantages of low cost to realize complex scene adjustment can be achieved, which can quickly promote the popularization and landing of the full-spectrum rhythm lighting system, and is an important system design path in the direction of healthy lighting. Embodiment

[0154] For further understanding, the manufacturing (design) method of the full-spectrum lighting system is exemplarily described in the embodiment, which is shown in FIG. 12 and includes but is not limited to the following steps.

[0155] S1201: design a source color temperature node matching scheme, and configure a corresponding full-spectrum device according to the designed source color temperature matching scheme. In the source color temperature node matching scheme, each source color temperature node in the CIE coordinate system satisfies the following conditions: the straight line distance L1 between the source color temperature node with the maximum color temperature value and the source color temperature node with the minimum color temperature value is greater than or equal to 0.04, the straight line distance of adjacent source color temperature nodes is equal, and the straight line distance L2 between each source color temperature node and the standard light spectrum color temperature node corresponding to the same color temperature value on the sunlight track is less than or equal to 0.02; the value of L1 can be set to be greater than or equal to 0.8, and the value of L2 can be set to be greater than or equal to 0.01; the configured full-spectrum device has a light emitting unit corresponding to each source color temperature node, and the ASD average value of the full-spectrum device at each source color temperature node is less than 25%, the Rf average value is greater than 85, and the Ra average value is greater than 90; for example, the ASD average value of the full-spectrum device at each source color temperature node can be specifically set to be less than 20%, the Rf average value is greater than 90, and the Ra average value is greater than 95.

[0156] The mixed light color temperature range in this embodiment can be flexibly set according to specific application scenarios. For ease of understanding, this embodiment provides Example Two for illustration. In Example Two, when designing the source color temperature node matching scheme, the color temperature range 2200K-8000K is selected as an example of the color temperature adjustment range according to the current demand. From the perspective of light uniformity, 4000K is selected as the source color temperature node of the intermediate value, that is, the designed source color temperature node matching scheme includes three source color temperature nodes, which are 2200K, 4000K and 8000K. Subsequently, mixed light can be performed in the two color temperature segments 2200K-4000K and 4000K-8000K. Correspondingly, the configured full-spectrum device has three light emitting units corresponding to the source color temperature nodes 2200K, 4000K and 8000K respectively. In this example, the ASD average value of the configured full-spectrum device under each source color temperature node is less than 20%, the Rf average value is greater than 90, and the Ra average value is greater than 95. In this example, the spectral diagram of the full-spectrum device on the source color temperature nodes 2200K, 4000K and 8000K is shown in FIGS. 9-1 to 9-3, and the parameters are shown in Table 12:

[0157] Table 12

[0158]

[0159] S1202: Design mixed light color temperature nodes, and configure input power ratios of each light emitting unit.

[0160] The mixed light color temperature nodes in this embodiment can be flexibly set according to specific application scenarios. The following still takes Example Two for illustration. The mixed light color temperature nodes designed in the range 2200K-4000K are 2500K, 2700K, 3000K and 3500K. The mixed light color temperature nodes designed in the range 4000K-8000K are 4500K, 5000K, 5700K and 6500K. Correspondingly, the input power ratios of each light emitting unit configured are shown in Table 13: The input power ratios of each light emitting unit control the connection line of the CIE points of each source light color temperature node and the mixed light color temperature node on the daylight locus of the full-spectrum device, which is shown in FIG. 9-4. As can be seen from FIG. 9-4, through the above designed color temperature node matching scheme, each source light color temperature node and the mixed light color temperature node can move along the daylight locus within the predetermined color temperature range.

[0161] Table 13

[0162]

[0163] S1203: Design a single-color light supplement scheme, and configure a light supplement unit.

[0164] The monochromatic light supplementing scheme in the embodiment can adopt, but is not limited to, the scheme shown in Embodiment Two. For ease of understanding, the following takes an example in which each mixed light color temperature node shares one first light supplementing unit, and the light is supplemented in the main wavelength range of 500 nm-600 nm. The following continues with Embodiment Two, in which the first light supplementing unit is a monochromatic light LED device selected from a special configuration of fluorescent powder and / or quantum dot scheme. The configuration scheme depends on the spectral defects of the mixed light color temperature nodes in the above step S1202 (the essence is that the light spectrum of the light emitting unit of the source color temperature node of the configured full spectrum device is traced back), according to which the first light supplementing unit is introduced. In Embodiment Two, the main wavelength range of the configured first light supplementing unit is 560 nm-570 nm, and the half wave width range is 80 nm-120 nm. The spectral diagram of the first light supplementing unit is shown in FIG. 10-1. The first light supplementing unit is introduced through the control unit, and each dimming interval dimming scheme forms three input paths. The input power ratio (p, a, b) of the first light supplementing unit and each light emitting unit at each color temperature node can be determined by, but not limited to, the above formulas (4) and (5) in Embodiment Two and controlled accordingly, so that the CIE of the mixed light color temperature node can be accurately moved along the daylight locus. See FIG. 10-2, compared with FIG. 9-4, the mixed light color temperature node in FIG. 10-2 is obviously closer to the daylight locus.

[0165] S1204: Design a monochromatic light supplementing correction scheme, and correct the light power input ratio of the light supplementing unit according to the correction scheme.

[0166] In the embodiment, the spectral matching of each light emitting unit and the light supplementing unit is comprehensively considered, and the correction value of the light power input of the light supplementing unit is determined by, but not limited to, the above formula (6) in Embodiment Two. Since the spectrum of the light supplementing unit is introduced into the spectrum of each mixed light color temperature node, the spectrum of the mixed light color temperature node can be supplemented when the spectrum has defects. The light power value input by the light supplementing unit is corrected on the basis of the light power input value determined in the above step S1203 according to the comparison of the advantages and disadvantages of the spectrum of the mixed light color temperature node, so that the ASD value of the spectrum synthesized by the mixed light color temperature node is higher. Continuing with the above Embodiment Two, the light power ratio corresponding to each color temperature node after the final correction is shown in Table 14, and the spectrum collection of the mixed light color temperature node with the first light supplementing unit is shown in FIGS. 11-1 to 11-8, and the parameters are shown in Table 15.

[0167] Table 14

[0168]

[0169]

[0170] Table 15

[0171]

[0172] It can be seen that the manufacturing method of the full-spectrum lighting system provided in the embodiment can manufacture the full-spectrum lighting system capable of achieving full-spectrum effect of mixed light in any color temperature range according to requirements. The parameter value of the mixed light color temperature node can be controlled by specific configuration of the light supplement unit and the light emitting unit of the full-spectrum device, and the method has universality. The input values of each path are linearly adjusted, which can effectively simplify the complexity of the control system of rhythm lighting, has the advantage of realizing complex scene adjustment at a lower cost. Embodiment

[0173] The embodiment further provides an LED lighting device, which comprises a device body and a full-spectrum lighting system arranged on the device body, and the full-spectrum lighting system is the full-spectrum lighting system shown in the above embodiments. In some examples of the embodiment, the LED lighting device can be used in, but is not limited to, the fields of household lighting, medical lighting, educational lighting, plant lighting, decorative lighting, traffic lighting, etc. Of course, the LED lighting device can also be used as a backlight or an illumination light source of a key device such as a mobile phone, a computer, a keyboard, etc.; or be manufactured into a flash or a light supplement lamp of a camera, etc. The above applications are only several applications exemplified by the embodiment, and it should be understood that the application of the LED light source in the embodiment is not limited to the above-mentioned several fields, and will not be described one by one here.

[0174] It should be understood that the application is not limited to the above examples, and those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the application.

Claims

1. A full spectrum lighting system comprising a full spectrum device, a supplementary lighting unit and a control unit, wherein: the full spectrum device comprises at least three light emitting units with different correlated color temperatures, each of the light emitting units corresponding to a source color temperature node, the source color temperature nodes are distributed in a CIE 1931 chromaticity diagram such that a chromaticity straight line distance L1 between a maximum and a minimum color temperature node is not less than 0.04, a chromaticity straight line distance between adjacent color temperature nodes is equal, and a chromaticity straight line distance L2 between each color temperature node and a standard spectrum node on a daylight locus corresponding to the node is not greater than 0.02; the supplementary lighting unit comprises an LED device with an emission spectrum having a main wavelength between 500 nm and 600 nm and a full width at half maximum between 10 nm and 200 nm; and the control unit sets input light power ratios of the three or more light emitting units in a numerical manner, so that the full spectrum device realizes mixed light output between any two source color temperature nodes, and when forming a mixed light color temperature node, controls input light power of the supplementary lighting unit, so that the mixed light spectrum tends to approach the daylight locus, and all input power ratios are normalized so that the total power is one.

2. The full spectrum lighting system of claim 1, wherein the output spectrum of each source color temperature node corresponding light emitting unit in the spectral range of 400 nm to 700 nm satisfies the following conditions: an average spectral difference ASD is less than 25%, a color fidelity index Rf is greater than 85, and a color rendering index Ra is greater than 90.

3. The full-spectrum lighting system of claim 1, wherein , the average ASD of the full spectrum device at each of the source color temperature nodes is less than 25%, the average Rf is greater than 85, and the average Ra is greater than 90.

4. The full spectrum lighting system of claim 1, wherein the difference between the mixed spectrum D(λ) corresponding to the mixed light color temperature node and the reference spectrum D_ref(λ) corresponding to the same color temperature on the daylight locus is evaluated by calculating an average spectral difference ASD in the wavelength range of 500 nm to 600 nm, and the ASD satisfies the following conditions: When the above ASD exceeds 4%, the system selects the monochromatic light supplement wavelength according to the maximum spectral difference in the waveband, which is defined by the following formula: wherein, A(λ) is the spectrum of the mixed light node; S(λ) is the standard daylight spectrum; λq is the starting wavelength (minimum value is 500 nm); λz is the ending wavelength (maximum value is 600 nm).

5. The full spectrum lighting system of claim 4, wherein the maximum spectral difference value MAXD DDref The corresponding relationship between the peak wavelength lp corresponding to the target waveband and the lZ of the target waveband is: lZ-5nm≤lp≤lZ+5nm.

6. A full spectrum lighting system as claimed in any one of the claims 1, characterized in that, Each of the light emitting units is a single color temperature light emitting unit, and each of the light emitting units is independently controlled.

7. The full-spectrum lighting system of claim 1, wherein, The color temperature value of each of the source color temperature nodes is between 1000 K and 20000 K.

8. The full spectrum lighting system of claim 1, wherein the supplementary lighting unit has an emission spectrum with a main wavelength between 500 nm and 600 nm and a full width at half maximum between 10 nm and 200 nm.

9. A method for setting a full spectrum lighting system, the system comprising a plurality of correlated color temperature nodes and at least one single color light emitting device, the method comprising: Mixing light emitted from at least two full spectrum light sources with different color temperatures to generate a mixed color temperature node of synthetic light; Determining the spectral difference between the spectral power distribution of the mixed light and a reference full spectrum light source at a target color temperature, wherein the difference is calculated as the average spectral difference (ASD) in the 500-600 nm band; Determining a dominant wavelength with the largest difference in the 500-600 nm band according to the spectral difference; Selecting a single-color light emitting device with a dominant wavelength within ±5 nm of the largest difference wavelength and a full width at half maximum (FWHM) between 60 nm and 200 nm; Injecting supplemental light from the single-color light device into the mixed light; Adjusting the output light power of the single-color light device within a tolerance range of ±5% of an initial set value calculated to make the chromaticity coordinates of the mixed light approach the target color point on the daylight locus; Wherein the adjusted output light power minimizes the ASD value of the mixed light and the reference light source at the target color temperature.

10. The method of claim 9, wherein the single-color light emitting device is a phosphor-modulated single-color light LED device with a dominant wavelength range of 500-600 nm and a FWHM range of 60-200 nm.

11. The method of claim 9, wherein the mixed light is composed of three light sources, a first color temperature node light source, a second color temperature node light source, and a single-color light device, each with normalized light power.

Images