Light source module, lighting system and lamp

Abstract

The light source module comprises a first light-emitting unit, a second light-emitting unit and a third light-emitting unit which are electrically independent from one another, and light emitted by the light-emitting units is mixed to form white light. By selecting the light color and spectral characteristics of the light emitting unit, the white light color temperature coverage range obtained by the light source module is wide, the color deviation Duv value is smaller than 0.003, and therefore the white light color deviation problem is solved. Meanwhile, the white light spectrum of the light source module simulates a target spectrum, and when the relative color temperature is more than 4000 K, the target spectrum is a sunlight spectrum; and when the relative color temperature is lower than 4000 K, the target spectrum is a blackbody radiation spectrum. Due to the fact that the spectrum simulates sunlight or a black body radiation spectrum, the obtained white light spectrum has good spectrum similarity and color rendering, the light color of the white light of the module is closer to sunlight, the light quality performance of the white light source is obviously superior to that of an existing double-color-temperature light mixing white light source, and the module is more suitable for the field of general illumination.

Description

Technical Field

[0001] The invention relates to a light source module, a lighting system and a lamp. Background Art

[0002] In the field of lighting, due to the low power consumption and high light efficiency of light-emitting diodes (LEDs), they have rapidly replaced traditional light sources and have been applied to various types of lighting equipment, such as indoor and outdoor lighting, smart lighting, plant lighting, automotive lighting, indoor and outdoor display lighting, etc. With the continuous improvement and improvement of the performance and cost of LED lighting, the market penetration rate has also been increased synchronously. At the same time, users have higher requirements for the light quality of lighting. From the perspective of color rendering, from the earliest color rendering index of 70, to the color rendering index of 80, 90, and even 95, 97 or above, and from the trend of the spectrum, it is gradually approaching the natural light spectrum, supplementing or eliminating specific visible light bands to improve its fit with the natural light spectrum, and superimposing dual color temperature dimming to achieve lighting scenes in different color temperature ranges, so as to form a dimming and color-adjusting lighting product that can take into account high light quality.

[0003] However, the adjustable color temperature range of the general single-color temperature or dual-color temperature white light dimming method is limited and is determined by the color temperature of the two white light chips used. In addition, since the dimming trajectory is a two-point connecting line of the color coordinate points of the two color temperatures on the CIE 1931 chromaticity diagram, when adjusted to the intermediate color temperature, due to the large gap between its color point and the black body trajectory line, its light color and spectrum have a relatively obvious deviation from the standard light source with the same color temperature. Moreover, the light color quality of the intermediate color temperature will also be sacrificed, and there is a relatively large gap compared with the full spectrum of single white light with the same color temperature, especially R9 and R12 in the color rendering index. Usually, in order to improve the problem of large color deviation of light at intermediate color temperature, two white light chips with a small color temperature difference can be used for dimming or the color point specifications of the two white light chips can be adjusted to ensure that when the color temperature is adjusted to the intermediate color temperature, the color point falls on the target value to reduce the color deviation. These two methods, one is that the adjustable color temperature range of white light is further reduced, and the other is that although the light color quality of the intermediate color temperature is guaranteed, the light color effect of the highest and lowest color temperatures is also sacrificed. Regardless of the specifications of the white light spectrum used, that is, a full-spectrum white light chip is used, the above-mentioned problems of limited adjustable color temperature range and large color deviation leading to reduced light quality exist.

[0004] In addition, in order to further expand the overall white light color temperature range, generally, red, green, and blue primary colors are superimposed on the original single-color temperature or two-color temperature white light chip for dimming and color adjustment, that is, the RGBW or RGBCW multi-color mixing method. And this kind of mixing method is as follows: when the target color temperature value is within the single-color temperature or two-color temperature white light range, the main body participating in the mixing is these white light chips. When its target color temperature value exceeds the range, red, green, and blue primary colors are used for mixing or in a way of compensating colors to obtain the white light of the required target color temperature. However, no matter which method is adopted, the white light obtained by this type of mixing can only be guaranteed within the color temperature range covered by the existing white light chips in terms of color rendering performance. When exceeding this range, due to the light-emitting diodes used for the three primary colors, the main component unit of which is a single-wavelength LED chip, and the full-width half-maximum (FWHM) of each single color is relatively narrow, the spectral continuity of the white light obtained by their participation in mixing is poor, and it cannot ensure that the color rendering index outside the white light chip color temperature range is still at a high level.

[0005] With the improvement of people's living standards, the demand for lighting is more diversified. How to provide a lighting device that can completely imitate the color temperature change of outdoor natural light and has a light quality comparable to natural light has become an urgent problem to be solved. Summary of the Invention

[0006] The purpose of the present invention is to solve the above problems and propose a multi-color light source module, a lighting system, and a lamp with adjustable white light color temperature and capable of realizing full-spectrum white light.

[0007] To achieve the above functions, the technical solution adopted in this application is to provide a light source module, which is characterized by including a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are electrically independent of each other;

[0008] The first light-emitting unit includes a first light source, a first encapsulation body covering the first light source, and a first phosphor. The light emitted by the first light-emitting unit includes at least three spectral emission peaks. The first peak wavelength is located at 430 - 445 nm, the second peak wavelength is located at 460 - 480 nm and the spectral intensity at the second peak wavelength is 60 - 90% of the spectral intensity at the first peak wavelength, and the third peak wavelength is located at 520 - 550 nm and the spectral intensity at the third peak wavelength is 20 - 50% of the spectral intensity at the first peak wavelength. Its light color is blue-green light located within the quadrilateral area surrounded by four points A1(0.24, 0.26), A2(0.26, 0.31), A3(0.29, 0.26), and A4(0.26, 0.23) on the 1931 CIE chromaticity diagram.

[0009] The second light-emitting unit includes a second light source, a second encapsulant covering the second light source, and a second phosphor. The light emitted by the second light-emitting unit includes at least three spectral emission peaks. The first peak wavelength is located at 445 - 460 nm, the second peak wavelength is located at 520 - 550 nm, and the spectral intensity at the first peak wavelength is 40 - 70% of the spectral intensity at the second peak wavelength. The third peak wavelength is located at 560 - 590 nm, and the spectral intensity at the third peak wavelength is 70 - 100% of the spectral intensity at the second peak wavelength. Its light color is green light located within the quadrilateral region enclosed by four points B1(0.33, 0.42), B2(0.36, 0.47), B3(0.40, 0.45), and B4(0.37, 0.42) on the 1931 CIE chromaticity diagram;

[0010] The third light-emitting unit includes a third light source, a third encapsulant covering the third light source, and a third phosphor. The light emitted by the third light-emitting unit includes at least two spectral emission peaks. The first peak wavelength is located at 630 - 680 nm, the second peak wavelength is located at 540 - 580 nm, and the spectral intensity at the second peak wavelength is 10 - 40% of the spectral intensity at the first peak wavelength. Its light color is orange-red light located within the quadrilateral region enclosed by four points C1(0.53, 0.42), C2(0.56, 0.43), C3(0.60, 0.39), and C4(0.55, 0.39) on the 1931 CIE chromaticity diagram.

[0011] Further, the blue light content of the third light-emitting unit is less than 10%.

[0012] Further, the first light source is an LED chip combination, including two or more blue LED chips with different peak wavelengths. The peak wavelength of the blue LED chips is 430 - 475 nm, and the difference between the peak wavelengths of different types of blue LED chips is greater than or equal to 10 nm.

[0013] Further, the peak wavelength of the first blue LED chip is 430 - 445 nm; the peak wavelength of the second blue LED chip is 445 - 460 nm; the peak wavelength of the third blue LED chip is 460 - 475 nm. The difference between the peak wavelengths of any two of the first blue LED chip, the second blue LED chip, and the third blue LED chip is greater than or equal to 10 nm. The first light source includes at least two of the first blue LED chip, the second blue LED chip, and the third blue LED chip. The second light source and the third light source are the second blue LED chip.

[0014] Further, the first phosphor includes at least one yellow-green phosphor with a peak wavelength in the range of 500 - 580 nm and at least one red phosphor with a peak wavelength in the range of 610 - 680 nm. The yellow-green phosphor is (Lu, Yb, Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga - Y 3 Al 5 O 12 :Ce, Y 3 (Al, Ga) 5 O 12 :Ce; the red phosphor is CaAlSiN 3 :Eu, (Ca, Sr)AlSiN 3 :Eu, (Ba, Sr, Ca, Mg) 2 Si 5 N 8 :Eu, K 2 SiF 6 :Mn 4+ 、K 2 GeF 6 :Mn 4+ 、K 2 TiF 6 :Mn 4+ 。

[0015] Further, the second phosphor includes at least one blue-green phosphor with a peak wavelength in the range of 485 - 515 nm, at least two yellow-green phosphors with a peak wavelength in the range of 500 - 580 nm, and at least one red / orange phosphor with a peak wavelength in the range of 580 - 620 nm. The blue-green phosphor is (Ba, Sr)Si 2 N 2 O 2 :Eu; the yellow-green phosphor is (Lu, Yb, Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga - Y 3 Al 5 O 12 :Ce, Y 3 (Al, Ga) 5 O 12 :Ce; the red / orange phosphor is CaAlSiN 3 :Eu, (Ca, Sr)AlSiN 3 :Eu, (Ba, Sr, Ca, Mg) 2 Si 5 N 8 :Eu, K 2 SiF6 : Mn 4+ , K 2 GeF 6 : Mn 4+ , K 2 TiF 6 : Mn 4+ .

[0016] Further, the third phosphor includes at least one yellow-green phosphor with a peak wavelength in the range of 520 - 580 nm and at least one red phosphor with a peak wavelength in the range of 630 - 680 nm. The yellow-green phosphor is (Lu, Yb, Tb) 3 (Al, Ga) 5 O 12 : Ce, Ga - Y 3 Al 5 O 12 : Ce, Y 3 (Al, Ga) 5 O 12 : Ce; the red phosphor is CaAlSiN 3 : Eu, (Ca, Sr)AlSiN 3 : Eu, (Ba, Sr, Ca, Mg) 2 Si 5 N 8 : Eu, K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ , K 2 TiF 6 : Mn 4+ .

[0017] Further, the white light formed by mixing the lights emitted by the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit has an adjustable color temperature in the range of 1800 - 14000 K, and the color deviation Duv from the blackbody radiation line is less than 0.003.

[0018] Further, the white light formed by mixing the lights emitted by the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit simulates the target spectrum, and the similarity to the target spectrum is greater than 88% in the color temperature range of 2700 - 14000 K. When the relative color temperature is above 4000 K, the target spectrum is the daylight spectrum; when the relative color temperature is below 4000 K, the target spectrum is the blackbody radiation spectrum.

[0019] Further, the white light formed by the combined emission of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit has a color rendering index CRI greater than 95 within the color temperature range of 1800 - 14000K.

[0020] Further, the white light formed by the combined emission of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit has a color rendering index CRI greater than 97 within the color temperature range of 2700 - 14000K, where R1 to R15 are all greater than 90, and the color fidelity Rf based on the TM-30 standard is greater than 95, and the color saturation Rg is between 100 ± 2.

[0021] Further, the light source module is a packaged chip, which includes a main body portion, on which a first accommodation groove, a second accommodation groove, and a third accommodation groove are provided. The first light source and the first phosphor, the second light source and the second phosphor, and the third light source and the third phosphor are respectively arranged in the first accommodation groove, the second accommodation groove, and the third accommodation groove. The first encapsulation body, the second encapsulation body, and the third encapsulation body respectively fill the first accommodation groove, the second accommodation groove, and the third accommodation groove and cover the first light source, the second light source, and the third light source.

[0022] This application also provides an illumination system, which is characterized by including: a light source and a driving circuit.

[0023] The light source includes at least one light source module as described above.

[0024] The driving circuit is electrically connected to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively and supplies power to them. The driving circuit controls the current / voltage provided to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively.

[0025] Further, the driving circuit includes:

[0026] A power conversion module that converts an external power supply into a DC power supply required by the light source module.

[0027] A control module that generates a control signal.

[0028] An LED driving module that receives the DC power supply output by the power conversion module and the control signal transmitted from the control module, adjusts the DC power supply according to the control signal, and is electrically connected to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively and outputs the adjusted driving current / voltage required by each light-emitting unit.

[0029] Further, the control signal is a PWM signal.

[0030] Further, the control module includes a communication module that receives the dimming / color temperature adjustment command transmitted from the outside and generates the control signal accordingly.

[0031] Further, the control module includes a storage module that stores preset control parameter values. The control parameter values are the control parameter values corresponding to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit when the light source module generates different color temperatures. The light source module is controlled according to the control parameter values. The color temperature of the white light formed by the light mixing of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit is adjustable within the range of 1800 - 14000K, and the color deviation Duv from the blackbody radiation line is less than 0.003, and the color rendering index CRI is greater than 95.

[0032] Further, when the light source module is controlled according to the control parameter values to simulate the target spectrum, the similarity with the target spectrum is greater than 88% within the color temperature range of 2700 - 14000K. When the relative color temperature is above 4000K, the target spectrum is the daylight spectrum; when the relative color temperature is below 4000K, the target spectrum is the blackbody radiation spectrum.

[0033] Further, when the light source module is controlled according to the control parameter values, the color rendering index CRI of the white light emitted by the light source module is greater than 97 within the range of 2700 - 14000K, where R1 to R15 are all greater than 90, and the color fidelity Rf based on the TM-30 standard is greater than 95, and the color saturation Rg is between 100 ± 2.

[0034] Further, the light source includes two or more of the above light source modules. The first light-emitting units, the second light-emitting units, and the third light-emitting units in each light source module are respectively connected in series and then electrically connected to the LED driving module.

[0035] This application also provides a lighting fixture, which is characterized by including the above-mentioned light source module or lighting system.

[0036] The light source module, lighting system, and lamp provided by the present application. The light source module includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are electrically independent of each other. The light emitted by each light-emitting unit is mixed to form white light. By selecting the light color and spectral characteristics of the light-emitting units, the white light obtained by mixing light in this light source module has a wide color temperature coverage range, covering from 1800K to 14000K. Moreover, the corresponding distribution locus of the white light color point can completely follow the blackbody radiation line, and the color deviation Duv value is less than 0.003, thus improving the white light color deviation problem. At the same time, the white light spectrum of this light source module simulates the target spectrum. When the relative color temperature is above 4000K, the target spectrum is the daylight spectrum; when the relative color temperature is below 4000K, the target spectrum is the blackbody radiation spectrum. Since the spectrum simulates the daylight or blackbody radiation spectrum, the obtained white light spectrum has good spectral similarity and color rendering property. The spectral similarity can reach more than 88% in the color temperature range of 2700 - 14000K. The overall color temperature range from 1800 - 14000K can achieve a white light color rendering index greater than 95. Among them, in the range of 2700 - 14000K, the white light color rendering index can reach greater than 97, and R1 to R15 are all greater than 90. Based on the TM-30 standard, the color fidelity Rf is greater than 95, and the color saturation Rg is between 100 ± 2. The white light color of this module is closer to daylight, significantly superior to the light quality performance of existing two-color temperature white light sources, and more suitable for the general lighting field. Description of the Drawings

[0037] Figure 1 is a schematic structural diagram of a light source module according to a preferred embodiment of the present invention;

[0038] Figure 2 is a color point distribution diagram of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit in the CIE 1931 chromaticity diagram of the light source module according to a preferred embodiment of the present invention;

[0039] Figure 3 is a spectral energy distribution diagram of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit in the light source module according to a preferred embodiment of the present invention;

[0040] Figure 4 is a comparison diagram of the emission spectral curves of white light embodiment a emitted by the light source module according to a preferred embodiment of the present invention and a standard blackbody radiation source (B27);

[0041] Figure 5 is a comparison diagram of the emission spectral curves of white light embodiment b emitted by the light source module according to a preferred embodiment of the present invention and a standard blackbody radiation source (B30);

[0042] Figure 6 is a comparison diagram of the emission spectral curves of white light embodiment c emitted by the light source module according to a preferred embodiment of the present invention and a standard D40 light source;

[0043] Figure 7 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment d emitted by the light source module of the preferred embodiment of the present invention and the standard D50 light source;

[0044] Figure 8 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment e emitted by the light source module of the preferred embodiment of the present invention and the standard D57 light source;

[0045] Figure 9 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment f emitted by the light source module of the preferred embodiment of the present invention and the standard D64 light source;

[0046] Figure 10 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment g emitted by the light source module of the preferred embodiment of the present invention and the standard blackbody radiation light source;

[0047] Figure 11 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment h emitted by the light source module of the preferred embodiment of the present invention and the standard blackbody radiation light source;

[0048] Figure 12 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment i emitted by the light source module of the preferred embodiment of the present invention and the standard D series light sources;

[0049] Figure 13 It is a comparison diagram of the emission spectrum curves between the white light of Embodiment j emitted by the light source module of the preferred embodiment of the present invention and the standard D series light sources;

[0050] Figure 14a 、 14b 、14c, 14d, 14e, 14f are schematic diagrams of the packaging structures of the light source modules of other preferred embodiments of the present invention;

[0051] Figure 15 It is a schematic diagram of the structure of the lighting system of the preferred embodiment in the present invention;

[0052] Figure 16 It is a schematic diagram of the structure of the lamp of the preferred embodiment in the present invention. Detailed implementation manners

[0053] The following further elaborates on a light source module, a lighting system, and a lamp proposed by the present invention in conjunction with the accompanying drawings and some preferred embodiments that conform to the present invention.

[0054] A specific implementation manner of the light source module of the present invention is a mixed-light LED packaging chip, and the packaging form can be PLCC chip-on-board packaging, ceramic chip-on-board packaging, CSP packaging, multi-in-one single-chip chip-on-board packaging, or COB chip integrated packaging, which is not limited in this application.

[0055] The structure of a specific embodiment is as follows Figure 1 As shown, the light source module 1 includes a main body 60 and a plurality of light emitting units arranged in the main body 60 and spaced apart from each other - a first light emitting unit 100, a second light emitting unit 200, and a third light emitting unit 300. Each light emitting unit 100, 200, 300 includes a light emitting source 101, 201, 301 and a package 102, 202, 302 covering it. The light emitting sources 101, 201, 301 are LED chips (LED Chip), including a direct mount or flip chip, and a single LED Chip or multiple LED Chips are connected together in series, parallel, or series-parallel. In this embodiment, in order to accommodate the packages 102, 202, 302, the main body 60 is a plastic bracket, and a plurality of receiving grooves 61, 62, 63 are provided therein. The material of the plastic bracket can be any one of PPA, PCT, and EMC. Each light emitting source 101, 201, 301 is respectively arranged in the receiving grooves 61, 62, 63, and each has a pair of pins 51a, 51b, 52a, 52b, 53a, 53b, and the pins 51a, 51b, 52a, 52b, 53a, 53b are electrically isolated from each other. The packages 102, 202, 302 are made of a silicone-based resin, an epoxy resin, or a combination thereof, and are respectively filled into the receiving grooves 61, 62, 63 and cover each LED chip 101, 201, 301 to ensure electrical isolation between the light emitting units 100, 200, 300.

[0056] In this embodiment, a light mixing scheme of multiple light sources is adopted, in which the first light emitting unit 100, the second light emitting unit 200, and the third light emitting unit 300 respectively emit blue-green light, green light, and orange-red light, and the combination of these three can form white light, as follows.

[0057] The first light emitting unit 100 includes a first light emitting source 101, a first package 102, and a first phosphor 103. The first light emitting source 101 is placed at the bottom of the first receiving groove 61 and is electrically connected to the outside through two pins 51a, 51b. The first package 102 fills the first receiving groove 61 and covers the first light emitting source 101.

[0058] The first light source 101 is an LED chip combination, which includes two or more blue LED chips with different peak wavelengths, and the blue LED chips are connected in series or parallel. The blue LED chip refers to an LED chip that emits blue light with a peak wavelength in the range of 430 - 475 nm. The reason for choosing a combination of multiple different blue LED chips to form the first light source 101 is that the phosphor usually has a relatively wide distribution in terms of full-width half-maximum (FWHM), while the FWHM of a single-color LED chip is relatively narrow. In this embodiment, although the first phosphor 103 is added to the first light-emitting unit 100, the blue light part still relies on the un-converted part of the energy in the light emitted by the LED chip. Therefore, in the case of a relatively narrow FWHM of the single-color LED chip, selecting chips with different peak wavelengths can form a superposition in the blue light band, so that the overall energy distribution in the blue light region is more uniform and the color rendering property is better. In this embodiment, the difference between the peak wavelengths of the two LED chips should be greater than or equal to 10 nm, which can ensure a relatively wide energy distribution in the blue light region. In the preferred solution, we divide the blue LED chips with peak wavelengths in the range of 430 - 475 into three types, namely, the first blue LED chip with a peak wavelength of 430 - 445 nm; the second blue LED chip with a peak wavelength of 445 - 460 nm; the third blue LED chip with a peak wavelength of 460 - 475 nm, and ensure that the peak wavelength difference between any two of these three types is greater than or equal to 10 nm. The first light source 101 includes a combination of at least two or more of the first blue LED chip, the second blue LED chip, and the third blue LED chip. At the same time, since the second light-emitting unit 200 and the third light-emitting unit 300 also use the form of exciting the phosphor with blue LED chips, the second light source 201 and the third light source 301 are also selected from the first blue LED chip, the second blue LED chip, and the third blue LED chip. When the first light source 101 selects two of the above three, the second light source 201 and the third light source 301 select the remaining one. When the first light source 101 selects a combination of three types, the second light source 201 and the third light source 301 arbitrarily select one of them. In this embodiment, the first light source 101 selects a combination of the first blue LED chip and the third blue LED chip, and the second light source 201 and the third light source 301 are selected as the second blue LED chip.

[0059] The first encapsulant 102 contains a first phosphor 103, and the first phosphor 103 includes at least one yellow-green phosphor with a peak wavelength in the range of 500 - 580 nm and at least one red phosphor with a peak wavelength in the range of 610 - 680 nm. In order to obtain a relatively wide FWHM, both yellow-green and red phosphors with different peak wavelengths are included in the first phosphor 103. Of course, the yellow-green phosphor and the red phosphor mentioned here are not limited to only one chemical composition, and they can still be mixed phosphors respectively, that is, more than one phosphor can be mixed to finally form the yellow-green phosphor or red phosphor we need. Among them, the yellow-green phosphor can be selected from (Lu, Yb, Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga-Y 3 Al 5 O 12 :Ce, Y 3 (Al, Ga) 5 O 12 :Ce or any one or a combination of multiple of them. The red phosphor can be selected from CaAlSiN 3 :Eu, (Ca, Sr)AlSiN 3 :Eu, (Ba, Sr, Ca, Mg) 2 Si 5 N 8 :Eu, K 2 SiF 6 :Mn 4+ , K 2 GeF 6 :Mn 4+ , K 2 TiF 6 :Mn 4+ or any one or several combinations of them.

[0060] Multiple blue LED chips of the first light source 101 are connected in series or in parallel and arranged in the receiving groove 61. After its light output excites the first phosphor 103, the spectral energy distribution of the light emitted by the first light emitting unit 100 is shown as the curve 100 in Figure 3 . Figure 3 It is a relative spectral intensity diagram. Each curve in the diagram has been normalized. Each point on the curve represents the energy magnitude at a certain wavelength on the horizontal axis. As Figure 3The spectral curve of the light emitted by the first light-emitting unit 100 shown includes at least three spectral emission peaks. The first peak wavelength P11 is located at 430 - 445 nm, the second peak wavelength P12 is located at 460 - 480 nm, and the spectral intensity at the second peak wavelength P12 is 60 - 90% of the spectral intensity at the first peak wavelength P11. The third peak wavelength P13 is located at 520 - 550 nm and the spectral intensity at the third peak wavelength P13 is 20 - 50% of the spectral intensity at the first peak wavelength P11. The light color of the light emitted by the first light-emitting unit 100 is blue-green and is located within the quadrilateral area enclosed by four points A1(0.24, 0.26), A2(0.26, 0.31), A3(0.29, 0.26), and A4(0.26, 0.23) on the 1931 CIE chromaticity diagram, that is Figure 2 the A area marked in the figure.

[0061] The second light-emitting unit 200 includes a second light source 201 and a second encapsulation body 202. The second light source 201 is placed at the bottom of the second accommodation groove 62 and is electrically connected to the outside through two pins 52a, 52b. The second encapsulation body 202 fills the second accommodation groove 62 and covers the second light source 201. The second light source 201 is a blue light LED that emits blue light with a peak wavelength in the range of 445 - 460 nm. The second encapsulation body 202 contains a second phosphor 203. The second phosphor 203 includes at least one blue-green phosphor with a peak wavelength located at 485 - 515 nm, at least two yellow-green phosphors with peak wavelengths located at 500 - 580 nm, and at least one red / orange phosphor with a peak wavelength located at 580 - 620 nm. The blue-green phosphor can be selected as (Ba, Sr)Si 2 N 2 O 2 :Eu. The yellow-green phosphor can be selected as (Lu, Yb, Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga-Y 3 Al 5 O 12 :Ce, Y 3 (Al, Ga) 5 O 12 :Ce or any two or more combinations thereof. The orange / red phosphor can be selected as CaAlSiN 3 :Eu, (Ca, Sr)AlSiN 3 :Eu, (Ba, Sr, Ca, Mg) 2 Si 5 N 8 :Eu, K 2 SiF 6 :Mn 4+ 、K2 GeF 6 :Mn 4+ 、K 2 TiF 6 :Mn 4+ Any one or several combinations thereof. After the second light source 201 excites the second phosphor 203, the light emitted by the second light emitting unit 200 includes at least three spectral emission peaks. As shown in Figure 3 , the first peak wavelength P21 is located at 445 - 460 nm, the second peak wavelength P22 is located at 520 - 550 nm, and the spectral intensity at the first peak wavelength P21 is 40 - 70% of the spectral intensity at the second peak wavelength P22. The third peak wavelength P23 is located at 560 - 590 nm, and the spectral intensity at the third peak wavelength P23 is 70 - 100% of the spectral intensity at the second peak wavelength P22. Its spectral energy distribution is shown as the 200 curve in Figure 3 . The light color of the light emitted by the second light emitting unit 200 is green and is located within the quadrilateral region enclosed by four points B1(0.33, 0.42), B2(0.36, 0.47), B3(0.40, 0.45), and B4(0.37, 0.42) on the 1931 CIE chromaticity diagram, that is, the B region marked in Figure 2 .

[0062] The third light emitting unit 300 includes a third light source 301 and a third encapsulation 302. The third light source 301 is placed at the bottom of the third receiving groove 63 and is electrically connected to the outside through two pins 53a, 53b. The third encapsulation 302 fills the third receiving groove 63 and covers the third light source 301. The third light source 301 is a blue LED that emits blue light with a peak wavelength in the range of 445 - 460 nm. The third encapsulation 302 contains a third phosphor 303. The third phosphor 303 includes at least one yellow-green phosphor with a peak wavelength in the range of 520 - 580 nm and at least one red phosphor with a peak wavelength in the range of 630 - 680 nm. The third phosphor 303 needs to include both yellow-green and red phosphors at the same time. Of course, each of these two phosphors can also be a mixed phosphor. The yellow-green phosphor can be selected from (Lu, Yb, Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga - Y 3 Al 5 O 12 :Ce, Y 3 (Al, Ga) 5 O 12 :Ce, any one or several combinations thereof. The red phosphor can be selected from CaAlSiN 3 :Eu, (Ca, Sr)AlSiN 3: Eu, (Ba, Sr, Ca, Mg) 2 Si 5 N 8 : Eu, K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ , K 2 TiF 6 : Mn 4+ Any one or several combinations thereof. After the second phosphor 303 is excited by the third light source 301, the light emitted by the third light-emitting unit 300 includes at least two spectral emission peaks. The first peak wavelength P31 is located at 630 - 680 nm, the second peak wavelength P32 is located at 540 - 580 nm, and the spectral intensity at the second peak wavelength P32 is 10 - 40% of the spectral intensity at the first peak wavelength P31. Its spectral energy distribution is shown as curve 300 in Figure 3 The light color of the light emitted by the third light-emitting unit 300 is orange-red, and it is located within the quadrilateral region enclosed by four points C1(0.53, 0.42), C2(0.56, 0.43), C3(0.60, 0.39), and C4(0.55, 0.39) on the 1931 CIE chromaticity diagram, that is, Figure 2 the C region marked in. Since most of the energy emitted by the third light source 301 is converted into orange-red light by the second phosphor 303, the blue light content in the light emitted by the third light-emitting unit 300 is less than 10%. The blue light content being less than 10% means that the proportion of the energy in the blue light band of 440 - 480 nm in the total energy of the light emitted by the light-emitting unit is less than 10%.

[0063] As we all know, the three primary colors can be mixed to form white light. In previous solutions, white light was formed by mixing RGB three-color lights. In this embodiment, the existing RGB scheme is optimized, and different light colors are selected. The first light-emitting unit 100 emits blue-green light, the second light-emitting unit 200 emits yellow light, and the third light-emitting unit 300 emits orange-red light. When the lights emitted by these three are synthesized into white light, full-spectrum white light can be obtained. The full-spectrum white light proposed in this application is achieved by simulating the target spectrum. When the target color temperature is lower than 4000K, the spectrum of the light emitted by the light source module 1 targets the blackbody radiation spectrum. When the target color temperature is above 4000K, the spectrum of the light emitted by the light source module 1 targets the simulated daylight spectrum. The daylight spectrum described in this application is the relative spectral power distribution of the D series standard illuminants specified by the International Commission on Illumination (CIE), such as D50, D57, D65 standard light sources... etc. In addition, the blackbody radiation spectrum at different color temperatures (T) and the blackbody radiation spectrum (B) conform to the following relationship:

[0064]

[0065] Among them, T represents the color temperature, h is Planck's constant, c is the speed of light (3x10 8 m / s), K is Boltzmann's constant, T B is the absolute temperature of the blackbody, and λ is the radiation wavelength.

[0066] In order to evaluate the simulated matching degree between the white light spectrum obtained in the embodiment and the target spectrum, and in view of the fact that there is currently no relevant evaluation standard promulgated by an authoritative institution, the evaluation method of the spectral matching degree adopted in this application, that is, the spectral similarity (SS, Spectral Similarity), is to refer to the average spectral deviation value (ASD, Average Spectral Difference) published by Bridgelux Inc. USA. The spectra of the reference light sources with different color temperatures adopted by it are similar to the TM-30 standard published by the Illuminating Engineering Society of North America (IES). That is, when its color temperature is above 5000K, the reference spectrum is based on the D-series standard illuminant. When the color temperature is below 4000K, it is based on the spectrum emitted by the blackbody radiation light source. When the color temperature is between 4000K and 5000K, it uses the spectrum emitted by the mixed light source of the 4000K blackbody radiation light source and the D50 standard illuminant as the reference. In addition, considering the band distribution of the human eye's visual sensitivity response, the spectral deviation evaluation range is limited between 425nm and 690nm. The specific calculation method is as follows:

[0067]

[0068] SS = 1 - ASD

[0069] Among them, φref is the relative intensity of the reference light source, φ is the relative intensity of the light source to be evaluated, and λ is the wavelength.

[0070] By performing dimming control on three light-emitting units respectively, white light of various different color temperatures can be mixed. In this embodiment, we use a PWM signal as the control signal, and independently control the three-color light-emitting units through the PWM dimming method, and apply different duty cycles to modulate the light-emitting power of each light-emitting unit to achieve the effect of mixed light. Table 1 lists several specific embodiments in the range of the general white light color temperature from 2700K to 6500K by modulating the duty cycles of the PWM signals of the three light-emitting units under different conditions. Table 1 shows the PWM duty cycles of each light-emitting unit, as well as the actual color temperature of the full-spectrum white light achieved by modulating the PWM signals of the three light-emitting units of the light source module 1, the color deviation (Duv) from the blackbody radiation line, the spectral similarity, the color rendering index (CRI), the color fidelity (Rf), the color saturation (Rg), and the special color rendering indices R1 to R15.

[0071] Table 1

[0072]

[0073] Examples a, b, c, d, e, and f in the table correspond to the target color temperatures of 2700K, 3000K, 4000K, 5000K, 5700K, and 6500K respectively. The target color temperature is the color temperature that is desired to be obtained. Due to the differences in individual products, there will be a slight deviation in the actual values under the determined target color temperature. The color temperatures listed in the table are the measured color temperatures of each embodiment. The spectral energy distribution of the full-spectrum white light obtained in each embodiment and the comparison with the target spectrum are as Figures 4 to 9 shown. Among them Figure 4 is the comparison diagram of the emission spectral curves of Example a and the standard blackbody radiation source (B27); Figure 5 is the comparison diagram of the emission spectral curves of Example b and the standard blackbody radiation source (B30); Figure 6 is the comparison diagram of the emission spectral curves of Example c and the standard D40 light source; Figure 7 is the comparison diagram of the emission spectral curves of Example d and the standard D50 light source;

[0074] Figure 8 is the comparison diagram of the emission spectral curves of Example e and the standard D57 light source; Figure 9 is the comparison diagram of the emission spectral curves of Example f and the standard D65 light source.

[0075] In addition to the data of the examples listed in Table 1, the white light color temperature that can be obtained by the light source module 1 proposed in this application is wider than the general white light color temperature range. Table 2 lists the example data of the light source module 1 in the two ranges of the white light color temperature from 1800K to 2700K and from 6500K to 14000K, including the control duty cycles of each path and the relevant light quality data.

[0076] Table 2

[0077] g h i j PWM Duty Cycle of the First Light Emitting Unit 100 1％ 1％ 83％ 97％ PWM Duty Cycle of the Second Light Emitting Unit 200 0％ 14％ 10％ 2％ PWM Duty Cycle of the Third Light Emitting Unit 300 99％ 85％ 7％ 1％ Relative Color Temperature CCT (K) 1803 2430 10310 14302 Color Deviation Duv 0.001 0.000 -0.0007 -0.0010 Spectral Similarity SS 82％ 89％ 89％ 89％ CRI (Ra) 97.0 96.5 97.8 97.3 Color Fidelity Rf 94 96 95 95 Color Saturation Rg 99 101 100 100 R1 99 96 97 96 R2 100 98 98 98 R3 94 97 97 97 R4 96 94 98 97 R5 99 95 97 97 R6 97 95 96 95 R7 97 100 99 99 R8 94 98 99 99 R9 87 98 97 93 R10 96 97 97 97 R11 90 89 98 98 R12 96 93 94 93 R13 99 96 98 97 R14 94 97 98 98 R15 96 98 97 96

[0078] The spectral energy distribution of the full-spectrum white light obtained in each of the embodiments listed in the table and the comparison with the target spectrum are as Figures 10 to 13 shown. Among them Figure 10 is the comparison diagram of the emission spectrum curve of Example g and the standard blackbody radiation light source, Figure 11 is the comparison diagram of the emission spectrum curve of Example h and the standard blackbody radiation light source; Figure 12 is the comparison diagram of the emission spectrum curve of Example i and the standard D-series light source; Figure 13 is the comparison diagram of the emission spectrum curve of Example j and the standard D-series light source.

[0079] As can be seen from Table 1 and Table 2, in this embodiment, the full-spectrum white light emitted after the mixing of the first light-emitting unit 100, the second light-emitting unit 200, and the third light-emitting unit 300 has a wide color temperature coverage range, which can be achieved from 1800 - 14000K, and the color deviation Duv from the blackbody radiation line is less than 0.003, ensuring that the light color is more pure in any color temperature state of the entire light source module. At the same time, the spectral similarity between the obtained white light spectrum and the target spectrum is high. When the color temperature of the white light emitted by the light source module is between 2400 - 14000K, the spectral similarity is greater than 88%. Basically, within the adjustable color temperature range of the light source module, its white light spectrum reaches the level of full spectrum. Here, we list several existing LED light sources with a relative color temperature of 4000K and calculate their SS values according to the above evaluation method, which are used as the control reference values for the embodiments of this application. Among them, the spectral similarity of the existing conventional Ra80 white LED is 68%, the spectral similarity of the conventional Ra90 white LED is 78%, and the spectral similarity of the conventional Ra95 white LED is 81%. The spectral similarity of these existing products is significantly lower than that of the light source module 1 proposed in this application. In terms of color rendering, also due to its high spectral similarity, when the color temperature of the white light emitted by the light source module is between 1800 - 14000K, the color rendering index CRI is greater than 95, and when the color temperature of the white light is between 2700 - 14000K, the color rendering index CRI is greater than 97, where R1 - R15 are all greater than 90, and the color fidelity Rf based on the TM-30 standard is greater than 95, and the color saturation Rg is between 100 ± 2. In summary, the light source module 1 has the advantages of a wide color temperature range, high spectral similarity, and good color rendering.

[0080] In Figure 1In an embodiment, a packaging structure of the light source module 1 is shown, in which four light-emitting units are packaged together. In other preferred embodiments, each light-emitting unit can also be independently packaged and finally arranged on the same substrate to form the light source module 1. Additionally, the first light-emitting unit 100 and the second light-emitting unit 200 can be packaged together, while the third light-emitting unit 300 is independently packaged. The present application does not limit this. There are many packaging structures for independent packaging. Since the first light-emitting unit 100, the second light-emitting unit 200, and the third light-emitting unit 300 have the same structure, taking a light-emitting unit similar to them, the fourth light-emitting unit 400 as an example, some other preferred independent packaging forms will be described. The fourth light-emitting unit 400 also includes a fourth light source 401, a fourth package 402 covering it, and a fourth phosphor 403. In Figure 14a , 14b the packaging structure of the embodiment also adopts a bracket structure as in Figure 1 the embodiment, and a fourth accommodation groove 64 is formed on the bracket. Figure 14a The embodiment shows a single light-emitting unit in the light source module 1. After the fourth light source 401 is placed, it is electrically connected to the outside through pins 54a and 54b. The fourth phosphor 403 is first tiled on the surface of the fourth light source 401 by spraying or coating, and then the fourth package 402 is used to fill the fourth accommodation groove 64. And in Figure 14b , the fourth accommodation groove 64 already containing the fourth light source 401 is first filled with the fourth package 402, and then the fourth phosphor 403 is tiled on the upper surface of the fourth package 402 by spraying or coating. As mentioned above, we already know that the fourth phosphor 403 of the fourth light-emitting unit 400 includes a variety of different phosphors. Figure 14c The packaging structure of Figure 14b is different from that of Figure 14e in that different types of phosphors are coated in layers, thus forming a double-layer structure as shown in the figure. Fig. 14 shows a ceramic high-power packaging method. Using a ceramic or metal material as the substrate 94, the fourth light source 401 is arranged on the substrate 94, and the fourth phosphor 403 is used to form a light conversion layer on the surface of the fourth light source 401 by spraying, fluorescence film laminating, or fluorescent ceramic sheet mounting, and then the fourth package 402 is filled by mold injection to cover the fourth phosphor 403 and the fourth light source 401. Figure 14e is a CSP packaging, suitable for high-power chips. Using a ceramic or metal material as the substrate 94, after the fourth phosphor 403 and the fourth package 402 are mixed, a light conversion layer on the surface of the fourth light source 401 is formed by fluorescence film laminating to complete the packaging. Figure 14f The structure of Figure 14eSimilarly, using a ceramic or metal substrate 94 as well, the fourth phosphor 403 is formed into a light conversion layer on the surface of the fourth light source 401 by spraying or fluorescent film laminating, and the fourth encapsulation body 402 is disposed outside thereof to complete the encapsulation. The above methods can all achieve the invention object of the present invention, and the present invention does not limit this.

[0081] Another preferred embodiment of the present invention is an illumination system as Figure 15 shown, including the light source module 1 and the drive circuit 2 in the above embodiment.

[0082] The drive circuit 2 includes a power conversion module 21, a control module 22, and an LED drive module 23. The power conversion module 21 is connected to an external power source and converts the external power source into a DC power source required by the light source module 1. The control module 22 includes a communication module, which receives a dimming / color temperature adjustment command transmitted from the outside and generates a control signal based on this. The communication module can be a wired or wireless communication module, and the present invention does not limit this. The input of the LED drive module 23 is the DC power source output by the power conversion module 21 and the control signal transmitted from the control module 22. The DC power source is adjusted according to the control signal, and the adjusted drive current / voltage required by each of the first light emitting unit 100, the second light emitting unit 200, and the third light emitting unit 300 in the light source module 1 is output respectively. Therefore, the LED drive module 23 needs to be electrically connected to the first light emitting unit 100, the second light emitting unit 200, and the third light emitting unit 300 respectively. When the illumination system includes multiple light source modules 1, as Figure 15 shown, the first light emitting units 100, the second light emitting units 200, and the third light emitting units 300 in each light source module 1 are connected in series and then electrically connected to the LED drive module 23.

[0083] As described above, the color temperature adjustable range of the light source module 1 in the embodiment is from 1800 - 14000K, and it is necessary to simulate the target spectrum. Therefore, the control module 22 includes a storage module that stores preset control parameter values. The control parameter values are the control parameter values corresponding to the first light emitting unit 100, the second light emitting unit 200, and the third light emitting unit 300 when the light source module 1 generates different color temperatures. The control parameter values can be voltage values, current values, or PWM signals. When a light emitting unit does not participate in the mixed light, the control parameter value of this light emitting unit is zero. When a color temperature change requirement is sent from the outside, the control module 22 receives the command, reads the relevant values in the storage module, forms a control signal and sends it to the LED driving module 23 to adjust the current / voltage output to the first light emitting unit 100, the second light emitting unit 200, and the third light emitting unit 300, so that the light source module 1 emits light of the target color or white light of the corresponding color temperature. In this embodiment, the preset control parameter is the duty cycle of the PWM signal of each light emitting unit in Tables 1 and 2. Since the light source module 1 selects light emitting units of specific colors and is controlled according to the preset parameters, the full-spectrum white light obtained has a wider color temperature coverage range compared with the white light obtained by mixing light in the prior art. It can be achieved from 1800 - 14000K, and the color deviation Duv from the blackbody radiation line is less than 0.003, ensuring that the entire light source module has a purer light color in any color temperature state. At the same time, the obtained white light spectrum and the target spectrum have a high degree of spectral similarity. When the color temperature of the white light emitted by the light source module is between 2400 - 14000K, the spectral similarity is greater than 88%. Basically, in the adjustable color temperature range interval of the light source module, its white light spectrum reaches the level of full spectrum. In terms of color rendering, also due to its high spectral similarity, when the color temperature of the white light emitted by the light source module is between 1800 - 14000K, the color rendering index CRI is greater than 95, and when the white light color temperature is between 2700 - 14000K, the color rendering index CRI is greater than 97, where R1 - R15 are all greater than 90, and the color fidelity Rf based on the TM-30 standard is greater than 95, and the color saturation Rg is between 100 ± 2. All in all, the light source module 1 has the advantages of a wide color temperature range, high spectral similarity, and good color rendering at the same time.

[0084] The above light source module and lighting system can be applied to various types of lamps, Figure 16The figure shows a lamp D1 according to a preferred embodiment of the present application. The lamp D1 is a lamp panel and includes the lighting system as described above. In other preferred embodiments, it may also be a chandelier, a ceiling lamp, etc. Alternatively, the light source module 1 can also be applied as a common white light chip to various lamps such as table lamps, downlights, and spotlights. The lamp D1 includes a chassis 86, a face frame 88 provided with a diffusion plate 89, a plurality of light source modules 1 provided on a light source board 85, and a power supply box 87. The aforementioned driving circuit 2 is provided in the power supply box 87. In the lamp, wiring is respectively carried out for the first light emitting unit 100, the second light emitting unit 200, and the third light emitting unit 300 in the light source module 1. The same type of light emitting units in each light source module 1 are connected in series and then connected to the driving circuit 2 in the power supply box 87 to form the aforementioned lighting system. The lamp D1 may also be provided with a controller, a heat dissipation device, a light distribution component, etc. according to the functions and requirements of the specific lamp. The controller can be used to adjust the light color, light intensity, etc. of the irradiation light emitted by the light source module L1. In addition to the diffusion plate in the embodiment, the light distribution component can also be a lampshade, a lens, a diffusion element, an optical waveguide, etc. The present invention does not limit this.

[0085] The foregoing description of the preferred embodiments of the present invention is for the purpose of illustration and description and is not intended to exhaust or limit the present invention to the specific forms disclosed. Obviously, many modifications and variations are possible, and these modifications and variations may be obvious to those skilled in the art and should be included within the scope of the present invention as defined by the appended claims.

Claims

1. A light source module, characterized in that, it includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are electrically independent of each other; The first light-emitting unit includes a first light source, a first encapsulant covering the first light source, and a first phosphor. The light emitted by the first light-emitting unit includes at least three spectral emission peaks. The first peak wavelength is located at 430 - 445 nm, the second peak wavelength is located at 460 - 480 nm, and the spectral intensity at the second peak wavelength is 60 - 90% of the spectral intensity at the first peak wavelength. The third peak wavelength is located at 520 - 550 nm, and the spectral intensity at the third peak wavelength is 20 - 50% of the spectral intensity at the first peak wavelength. Its light color is blue-green light located within the quadrilateral region enclosed by four points A1(0.24, 0.26), A2(0.26, 0.31), A3(0.29, 0.26), and A4(0.26, 0.23) on the 1931 CIE chromaticity diagram; The second light-emitting unit includes a second light source, a second encapsulant covering the second light source, and a second phosphor. The light emitted by the second light-emitting unit includes at least three spectral emission peaks. The first peak wavelength is located at 445 - 460 nm, the second peak wavelength is located at 520 - 550 nm, and the spectral intensity at the first peak wavelength is 40 - 70% of the spectral intensity at the second peak wavelength. The third peak wavelength is located at 560 - 590 nm, and the spectral intensity at the third peak wavelength is 70 - 100% of the spectral intensity at the second peak wavelength. Its light color is green light located within the quadrilateral region enclosed by four points B1(0.33, 0.42), B2(0.36, 0.47), B3(0.40, 0.45), and B4(0.37, 0.42) on the 1931 CIE chromaticity diagram; The third light-emitting unit includes a third light source, a third encapsulant covering the third light source, and a third phosphor. The light emitted by the third light-emitting unit includes at least two spectral emission peaks. The first peak wavelength is located at 630 - 680 nm, the second peak wavelength is located at 540 - 580 nm, and the spectral intensity at the second peak wavelength is 10 - 40% of the spectral intensity at the first peak wavelength. Its light color is orange-red light located within the quadrilateral region enclosed by four points C1(0.53, 0.42), C2(0.56, 0.43), C3(0.60, 0.39), and C4(0.55, 0.39) on the 1931 CIE chromaticity diagram.

2. The light source module according to claim 1, characterized in that, the blue light content of the third light-emitting unit is less than 10%.

3. The light source module according to claim 1, characterized in that, the first light source is an LED chip combination, including two or more blue LED chips with different peak wavelengths. The peak wavelength of the blue LED chips is 430 - 475 nm, and the difference between the peak wavelengths of different types of blue LED chips is greater than or equal to 10 nm.

4. The light source module according to claim 3, characterized in that, The peak wavelength of the first blue LED chip is 430 - 445 nm; the peak wavelength of the second blue LED chip is 445 - 460 nm; the peak wavelength of the third blue LED chip is 460 - 475 nm. The difference in peak wavelength between any two of the first blue LED chip, the second blue LED chip, and the third blue LED chip is greater than or equal to 10 nm. The first light source includes at least two of the first blue LED chip, the second blue LED chip, and the third blue LED chip. The second light source and the third light source are the second blue LED chips.

5. The light source module according to claim 1, wherein, The first phosphor includes at least one yellow-green phosphor with a peak wavelength in the range of 500 - 580 nm and at least one red phosphor with a peak wavelength in the range of 610 - 680 nm. The yellow-green phosphor is (Lu,Yb,Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga-Y 3 Al 5 O 12 :Ce, Y 3 (Al,Ga) 5 O 12 :Ce; The red phosphor is CaAlSiN 3 :Eu, (Ca,Sr)AlSiN 3 :Eu, (Ba,Sr,Ca,Mg) 2 Si 5 N 8 :Eu, K 2 SiF 6 :Mn 4+ 、K 2 GeF 6 :Mn 4+ 、K 2 TiF 6 :Mn 4+ 。 6. The light source module according to claim 1, wherein, The second phosphor includes at least one blue-green phosphor with a peak wavelength in the range of 485 - 515 nm, at least two yellow-green phosphors with peak wavelengths in the range of 500 - 580 nm, and at least one red / orange phosphor with a peak wavelength in the range of 580 - 620 nm. The blue-green phosphor is (Ba,Sr)Si 2 N 2 O 2 :Eu; The yellow-green phosphors are (Lu,Yb,Tb) 3 (Al,Ga) 5 O 12 :Ce, Ga-Y 3 Al 5 O 12 :Ce, Y 3 (Al,Ga) 5 O 12 :Ce; The red / orange phosphors are CaAlSiN 3 :Eu, (Ca,Sr)AlSiN 3 :Eu, (Ba,Sr,Ca,Mg) 2 Si 5 N 8 :Eu, K 2 SiF 6 :Mn 4+ 、K 2 GeF 6 :Mn 4+ 、K 2 TiF 6 :Mn 4+ 。 7. The light source module according to claim 1, wherein, The third phosphor includes at least one yellow-green phosphor with a peak wavelength in the range of 520 - 580 nm and at least one red phosphor with a peak wavelength in the range of 630 - 680 nm. The yellow-green phosphor is (Lu,Yb,Tb) 3 (Al, Ga) 5 O 12 :Ce, Ga-Y 3 Al 5 O 12 :Ce, Y 3 (Al,Ga) 5 O 12 :Ce; the red phosphor is CaAlSiN 3 :Eu, (Ca,Sr)AlSiN 3 :Eu, (Ba,Sr,Ca,Mg) 2 Si 5 N 8 :Eu, K 2 SiF 6 :Mn 4+ 、K 2 GeF 6 :Mn 4+ 、K 2 TiF 6 :Mn 4+ 。 8. The light source module according to claim 1, wherein, The white light formed by the mixed light emission of the first light emitting unit, the second light emitting unit, and the third light emitting unit has an adjustable color temperature in the range of 1800 - 14000 K, and the color deviation Duv from the blackbody radiation line is less than 0.

003.

9. The light source module according to claim 8, wherein, The white light formed by the mixed light emission of the first light emitting unit, the second light emitting unit, and the third light emitting unit simulates a target spectrum, and the similarity to the target spectrum is greater than 88% in the color temperature range of 2700 - 14000 K. When the relative color temperature is above 4000 K, the target spectrum is a daylight spectrum; when the relative color temperature is below 4000 K, the target spectrum is a blackbody radiation spectrum.

10. The light source module according to claim 9, wherein, The white light formed by the mixed light emission of the first light emitting unit, the second light emitting unit, and the third light emitting unit has a color rendering index CRI greater than 95 in the color temperature range of 1800 - 14000 K.

11. The light source module according to claim 10, wherein, The white light formed by the mixed light emission of the first light emitting unit, the second light emitting unit, and the third light emitting unit has a color rendering index CRI greater than 97 in the color temperature range of 2700 - 14000 K, where R1 - R15 are all greater than 90, and the color fidelity Rf based on the TM - 30 standard is greater than 95, and the color saturation Rg is between 100 ± 2.

12. The light source module according to claim 1, wherein, The light source module is a packaged chip, which includes a main body part. The main body part is provided with a first accommodation groove, a second accommodation groove, and a third accommodation groove. The first light source and the first phosphor, the second light source and the second phosphor, and the third light source and the third phosphor are respectively arranged in the first accommodation groove, the second accommodation groove, and the third accommodation groove. The first encapsulation body, the second encapsulation body, and the third encapsulation body respectively fill the first accommodation groove, the second accommodation groove, and the third accommodation groove and cover the first light source, the second light source, and the third light source.

13. An illumination system, wherein, comprising: A light source and a driving circuit, The light source includes at least one light source module as described in any one of claims 1 to 12; The driving circuit is electrically connected to and supplies power to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively, and the driving circuit controls the current / voltage supplied to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively.

14. The lighting system according to claim 13, characterized in that, The driving circuit includes: A power conversion module that converts an external power supply into a DC power supply required by the light source module; A control module that generates a control signal; An LED driving module that receives the DC power output by the power conversion module and the control signal transmitted by the control module, adjusts the DC power according to the control signal, and the LED driving module is electrically connected to and outputs the adjusted driving current / voltage required by each of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively.

15. The lighting system according to claim 14, characterized in that, The control signal is a PWM signal.

16. The lighting system according to claim 14, characterized in that, The control module includes a communication module that receives a dimming / color adjustment command transmitted from the outside and generates the control signal based on this.

17. The lighting system according to claim 14, characterized in that, The control module includes a storage module that stores preset control parameter values. The control parameter values are the control parameter values corresponding to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit when the light source module generates different color temperatures. The light source module is controlled according to the control parameter values. The white light color temperature formed by the light emission of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit is adjustable within the range of 1800 - 14000K, and the color deviation Duv from the blackbody radiation line is less than 0.003, and the color rendering index CRI is greater than 95.

18. The lighting system according to claim 17, characterized in that, Controlling the light source module according to the control parameter values to simulate a target spectrum, and the similarity with the target spectrum is greater than 88% within the color temperature range of 2700 - 14000K. When the relative color temperature is above 4000K, the target spectrum is a daylight spectrum; when the relative color temperature is below 4000K, the target spectrum is a blackbody radiation spectrum.

19. The lighting system according to claim 18, characterized in that, Controlling the light source module according to the control parameter values, and the color rendering index CRI of the white light color temperature emitted by the light source module is greater than 97 within the range of 2700 - 14000K, where R1 to R15 are all greater than 90, and the color fidelity Rf based on the TM-30 standard is greater than 95, and the color saturation Rg is between 100 ± 2.

20. The lighting system according to claim 14, characterized in that, The light source includes more than two of the light source modules, and the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit in each of the light source modules are respectively connected in series and then electrically connected to the LED driving module.

21. A lighting fixture, characterized in that it includes the light source module according to any one of claims 1 to 12, or includes the lighting system according to any one of claims 13 to 20.

Images