Light source module, lighting system and lamp

Abstract

A light source module, a lighting system and a lamp. The light source module comprises a first light-emitting unit (100), a second light-emitting unit (200) and a third light-emitting unit (300) which are electrically independent of each other, light emitted from the light-emitting units being mixed to form white light. By means of the selection of the light colors and spectral characteristics of the light-emitting units, the white light obtained by the light source module has a wide color temperature coverage range and a color deviation Duv value less than 0.003, thereby solving the problem of white light color deviation. In addition, the white light spectrum of the light source module simulates a target spectrum, when the correlated color temperature is 4000K or above, the target spectrum being the solar spectrum, and when the correlated color temperature is lower than 4000K, the target spectrum being the blackbody radiation spectrum. Because the spectrum simulates the solar or blackbody radiation spectrum, the obtained white light spectrum has a good color rendering index and spectral similarity, such that the color of the white light of the light source module is closer to that of daylight, thereby being more adapted to the field of general lighting.

Description

Light source modules, lighting systems and lamps

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on November 23, 2023, with application number 202311582047.9, and invention name “Light source module, lighting system and lamp”, and the utility model application filed with the China Patent Office on November 23, 2023, with application number 202323178453.7, and utility model name “Light source module, lighting system and lamp”. The entire contents of the applications are incorporated by reference into this application. Technical Field

[0003] The present application relates to a light source module, a lighting system and a lamp. Background Art

[0004] In the lighting sector, light-emitting diodes (LEDs), due to their low power consumption and high luminous efficiency, are rapidly replacing traditional light sources and being applied to various lighting devices, such as indoor and outdoor lighting, smart lighting, plant lighting, automotive lighting, and indoor and outdoor display lighting. As the performance and cost of LED lighting continue to improve, market penetration has also increased. At the same time, users have higher expectations for light quality. In terms of color rendering, the color rendering index has increased from the earliest 70 to 80, 90, and even 95, 97 and above. Spectral trends are gradually moving closer to the natural light spectrum, supplementing or eliminating specific visible light bands to improve their fit with the natural light spectrum. Furthermore, dual-color temperature dimming is being added to achieve lighting scenarios with different color temperature ranges, creating dimming and color-adjusting lighting products that achieve both high light quality and high quality.

[0005] However, the adjustable color temperature range of conventional single- or dual-color-temperature white light dimming methods is limited and determined by the color temperatures of the two white light chips used. Furthermore, because the dimming trajectory is a line connecting the color coordinates of the two color temperatures on the CIE 1931 chromaticity diagram, when adjusted to an intermediate color temperature, the color point differs significantly from the blackbody trajectory, resulting in a significant deviation in light color and spectrum from a standard light source of the same color temperature. Furthermore, the color quality of the intermediate color temperature is also compromised, significantly differing from the full spectrum of a single white light source of the same color temperature, particularly in terms of color rendering indices R9 and R12. Typically, to address the large color deviation problem at intermediate color temperatures, 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 adjusted to the intermediate color temperature, their color points fall within the target value to reduce color deviation. However, these two approaches further reduce the adjustable color temperature range of white light. Alternatively, while maintaining the color quality of the intermediate color temperature, the color effects of the highest and lowest color temperatures are sacrificed. Regardless of the white light spectrum specifications used, even if a full-spectrum white light chip is used, the aforementioned problems of limited adjustable color temperature range and large color deviation leading to reduced light quality persist.

[0006] Furthermore, to further expand the overall color temperature range of white light, the three primary colors of red, green, and blue (RGB) are typically added to the original single- or dual-color temperature white light chip for dimming and color adjustment. This is known as RGBW or RGBCW multi-color mixing. In this mixing approach, when the target color temperature is within the single- or dual-color temperature range, the white light chip primarily participates in the mixing. When the target color temperature exceeds this range, the three primary colors of red, green, and blue (RGB) are mixed or a color compensation method is used to achieve the desired target color temperature. However, regardless of the method used, the color rendering performance of the resulting white light is only guaranteed within the color temperature range covered by the existing white light chip. Outside this range, because the LEDs used for the three primary colors are primarily single-wavelength LED chips, the full-width half-maximum (FWHM) of each color is relatively narrow. This results in poor spectral continuity in the resulting white light, and cannot guarantee a high color rendering index outside the color temperature range of the white light chip.

[0007] As people's living standards improve, the demand for lighting becomes more diversified. How to provide a lighting device that can completely imitate the color temperature changes of outdoor natural light and the light quality comparable to natural light has become an issue that needs to be improved urgently. Summary of the Invention

[0008] The purpose of this application is to solve the above problems and propose a multi-color light source module, lighting system and lamp with adjustable white light color temperature and full spectrum white light.

[0009] In order to achieve the above functions, the technical solution adopted by the present application is to provide a light source module, which is 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 and a first package covering the first light source and a first phosphor, and the light emitted by the first light-emitting unit includes at least three spectral emission peaks, the first peak wavelength is located at 430-445nm, the second peak wavelength is located at 460-480nm 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- The invention relates to a light emitting diode (LED) device comprising a first light emitting diode (LED) device and a second light emitting diode (LED); wherein the light emitting diode (LED) device comprises a first light emitting diode (LED) device and a second light emitting diode (LED); and wherein the light emitting diode (LED) device comprises a first light emitting diode (LED); and wherein the light emitting diode (LED) device comprises a first light emitting diode (LED); and wherein the light emitting diode (LED) device comprises a second ... , the second peak wavelength is located at 520-550nm 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 560-590nm and the spectral intensity at the third peak wavelength is 70-100% of the spectral intensity at the second peak wavelength, and its light color is green light located in the quadrilateral area surrounded 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 emission unit. A light source, a third package covering the third light source, and a third phosphor, wherein the light emitted by the third light-emitting unit includes at least two spectral emission peaks, a first peak wavelength is located between 630 and 680 nm, a second peak wavelength is located between 540 and 580 nm, and the spectral intensity at the second peak wavelength is 10-40% of the spectral intensity at the first peak wavelength, and the light color is orange-red light located within a quadrilateral area surrounded 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.

[0010] Furthermore, the blue light content of the third light-emitting unit is less than 10%.

[0011] Furthermore, the first light source is an LED chip combination, comprising two or more blue light LED chips with different peak wavelengths, the peak wavelength of the blue light LED chip is 430-475nm, and the difference between the peak wavelengths of different types of the blue light LED chips is greater than or equal to 10nm.

[0012] Furthermore, the first blue light LED chip has a peak wavelength of 430-445 nm; the second blue light LED chip has a peak wavelength of 445-460 nm; and the third blue light LED chip has a peak wavelength of 460-475 nm. The difference in peak wavelength between any two of the first blue light LED chip, the second blue light LED chip, and the third blue light LED chip is greater than or equal to 10 nm. The first light source includes at least two of the first blue light LED chip, the second blue light LED chip, and the third blue light LED chip. The second light source and the third light source are the second blue light LED chip.

[0013] Furthermore, the first phosphor includes at least one yellow-green phosphor with a peak wavelength of 500-580 nm and at least one red phosphor with a peak wavelength of 610-680 nm, wherein the yellow-green phosphor is (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce; the red phosphor is CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ 、K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ .

[0014] Furthermore, the second phosphor includes at least one blue-green phosphor with a peak wavelength of 485-515 nm, at least two yellow-green phosphors with a peak wavelength of 500-580 nm, and at least one red / orange phosphor with a peak wavelength of 580-620 nm, wherein the blue-green phosphor is (Ba, Sr)Si2N2O2:Eu; the yellow-green phosphor is (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce; the red / orange phosphor is CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn4+ 、K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ .

[0015] Furthermore, the third phosphor includes at least one yellow-green phosphor with a peak wavelength of 520-580 nm and at least one red phosphor with a peak wavelength of 630-680 nm, wherein the yellow-green phosphor is (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce; the red phosphor is CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ 、K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ .

[0016] Furthermore, the color temperature of the white light formed by the mixture of the light emitted by 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 is less than 0.003.

[0017] Furthermore, the white light simulated target spectrum formed by the mixture of the light emitted by the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit has a similarity with the target spectrum 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 lower than 4000K, the target spectrum is a blackbody radiation spectrum.

[0018] Furthermore, the white light generated by mixing the light emitted by 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 a color temperature range of 1800-14000K.

[0019] Furthermore, the white light formed by the mixture of the light emitted by 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, wherein 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.

[0020] Furthermore, the light source module is a packaged chip, which includes a main body, on which a first accommodating groove, a second accommodating groove and a third accommodating groove are provided. The first light source and the first phosphor, the second light source and the second phosphor, the third light source and the third phosphor are respectively arranged in the first accommodating groove, the second accommodating groove and the third accommodating groove. The first packaging body, the second packaging body and the third packaging body respectively fill the first accommodating groove, the second accommodating groove and the third accommodating groove and cover the first light source, the second light source and the third light source.

[0021] The present application also provides a lighting system, characterized in that it includes: a light source and a driving circuit, the light source includes at least one light source module as described above; 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, and 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.

[0022] Furthermore, the driving circuit includes: a power conversion module, which converts the external power supply into the DC power supply required by the light source module; a control module, which generates a control signal; an LED driving module, which receives the DC power supply output by the power conversion module and the control signal transmitted by the control module, and adjusts the DC power supply according to the control signal. The LED driving module is electrically connected to the first light-emitting unit, the second light-emitting unit and the third light-emitting unit respectively and outputs the driving current / voltage required by each light-emitting unit after adjustment.

[0023] Furthermore, the control signal is a PWM signal.

[0024] Furthermore, the control module includes a communication module for receiving a dimming / color adjustment command from the outside and generating the control signal accordingly.

[0025] Furthermore, the control module includes a storage module storing preset control parameter values, wherein the control parameter values ​​are 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 produces different color temperatures. The light source module is controlled according to the control parameter values, and the color temperature of the white light formed by the mixed light of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit is adjustable in the range of 1800-14000K, and the color deviation Duv from the blackbody radiation is less than 0.003, and the color rendering index CRI is greater than 95.

[0026] Furthermore, the light source module is controlled to simulate the target spectrum according to the control parameter value, 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 the daylight spectrum; when the relative color temperature is lower than 4000K, the target spectrum is the blackbody radiation spectrum.

[0027] Furthermore, the light source module is controlled according to the control parameter values, and the color rendering index CRI of the white light emitted by the light source module is greater than 97 in the range of 2700-14000K, among which 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.

[0028] Furthermore, the light source includes more than two light source modules, and the first light emitting unit, the second light emitting unit, and the third light emitting unit in each light source module are connected in series and electrically connected to the LED driving module.

[0029] The present application also provides a lamp, characterized in that it includes the light source module or lighting system as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of a light source module according to a preferred embodiment of the present application;

[0031] 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 light source module of the preferred embodiment of the present application on the CIE 1931 chromaticity diagram;

[0032] FIG3 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 of the preferred embodiment of the present application;

[0033] FIG4 is a comparison diagram of emission spectrum curves of white light embodiment a emitted by the light source module of the preferred embodiment of the present application and a standard blackbody radiation light source (B27);

[0034] FIG5 is a comparison diagram of emission spectrum curves of white light embodiment b emitted by the light source module of the preferred embodiment of the present application and a standard blackbody radiation light source (B30);

[0035] FIG6 is a comparison diagram of emission spectrum curves of white light embodiment c emitted by the light source module of the preferred embodiment of the present application and a standard D40 light source;

[0036] FIG7 is a comparison diagram of emission spectrum curves of white light embodiment d emitted by the light source module of the preferred embodiment of the present application and a standard D50 light source;

[0037] FIG8 is a comparison diagram of emission spectrum curves of white light embodiment e emitted by the light source module of a preferred embodiment of the present application and a standard D57 light source;

[0038] FIG9 is a comparison diagram of emission spectrum curves of white light embodiment f emitted by the light source module of a preferred embodiment of the present application and a standard D64 light source;

[0039] FIG10 is a comparison diagram of emission spectrum curves of white light embodiment g emitted by the light source module of the preferred embodiment of the present application and a standard blackbody radiation light source;

[0040] FIG11 is a comparison diagram of emission spectrum curves of white light embodiment h emitted by the light source module of the preferred embodiment of the present application and a standard blackbody radiation light source;

[0041] FIG12 is a comparison diagram of emission spectrum curves of white light embodiment i emitted by the light source module of the preferred embodiment of the present application and a standard D series light source;

[0042] FIG13 is a comparison diagram of emission spectrum curves of white light embodiment j emitted by the light source module of the preferred embodiment of the present application and a standard D series light source;

[0043] Figures 14a, 14b, 14c, 14d, 14e, and 14f are schematic diagrams of packaging structures of light source modules according to other preferred embodiments of the present application;

[0044] FIG15 is a schematic structural diagram of a lighting system according to a preferred embodiment of the present application;

[0045] FIG16 is a schematic structural diagram of a lamp according to a preferred embodiment of the present application. DETAILED DESCRIPTION

[0046] The light source module, lighting system and lamp proposed in this application are further described in detail below with reference to the accompanying drawings and some preferred embodiments consistent with this application.

[0047] A specific embodiment of the light source module of the present application is a mixed light LED package chip, and the packaging form can be PLCC chip packaging, ceramic chip packaging, CSP packaging, all-in-one single chip packaging or COB chip integrated packaging, which is not limited in the present application.

[0048] The structure of a specific embodiment is shown in Figure 1. The light source module 1 includes a main body 60 and a plurality of light-emitting units disposed on the main body 60 and spaced apart from each other, namely 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 source 101, 201, 301 and a package 102, 202, 302 covering it. The light source 101, 201, 301 is an LED chip (LED Chip), including a face-up or flip-up package, a single LED chip or multiple LED chips connected in series, parallel, or series-parallel. In this embodiment, in order to accommodate the package 102, 202, 302, the main body 60 is a plastic bracket with a plurality of accommodating grooves 61, 62, 63 provided therein. The material of the plastic bracket can be any of PPA, PCT, and EMC. Each light source 101, 201, 301 is disposed in a receiving groove 61, 62, 63, respectively, and each has a pair of pins 51a, 51b, 52a, 52b, 53a, 53b. The pins 51a, 51b, 52a, 52b, 53a, 53b are electrically isolated from each other. The package 102, 202, 302 is made of a silicone resin, epoxy resin, or a combination thereof. It fills the receiving grooves 61, 62, 63, and covers the LED chips 101, 201, 301, ensuring electrical isolation between the light-emitting units 100, 200, 300.

[0049] In this embodiment, a mixed light solution of multiple light sources is adopted, wherein the first light-emitting unit 100, the second light-emitting unit 200, and the third light-emitting unit 300 emit blue-green light, green light, and orange-red light respectively, and the combination of these three can form white light, as follows.

[0050] The first light-emitting unit 100 includes a first light source 101, a first encapsulation body 102, and a first phosphor 103. The first light source 101 is placed at the bottom of the first receiving groove 61 and is electrically connected to the outside world via two pins 51a and 51b. The first encapsulation body 102 fills the first receiving groove 61 and covers the first light source 101.

[0051] The first light source 101 is an LED chip combination, comprising two or more blue LED chips with different peak wavelengths, connected in series or parallel. The blue LED chips are those that emit blue light with a peak wavelength in the range of 430-475 nm. The reason for selecting a combination of different blue LED chips to form the first light source 101 is that phosphors typically have a wide distribution in terms of full-width half-maximum (FWHM), while single-color LED chips have a narrower FWHM. In this embodiment, although the first phosphor 103 is incorporated into the first light-emitting unit 100, the blue light component still relies on the unconverted energy in the light emitted by the LED chips. Therefore, if the single-color LED chips have a narrow FWHM, selecting chips with different peak wavelengths can create a superposition in the blue light band, resulting in a more uniform energy distribution across the blue light region and improved color rendering. In this embodiment, the difference in peak wavelength between the two LED chips is greater than or equal to 10 nm, which ensures a wider energy distribution in the blue light region. In the preferred embodiment, blue LED chips with peak wavelengths between 430 and 475 nm are divided into three types: a first blue LED chip with a peak wavelength of 430-445 nm; a second blue LED chip with a peak wavelength of 445-460 nm; and a third blue LED chip with a peak wavelength of 460-475 nm. The difference between the peak wavelengths of any two of these three types is guaranteed to be greater than or equal to 10 nm. The first light source 101 comprises a combination of at least two of the following: a first blue LED chip, a second blue LED chip, and a third blue LED chip. Furthermore, since the second and third light-emitting units 200 and 300 also utilize blue LED chips to excite phosphors, the second and third light sources 201 and 301 are also selected from the first, second, and third blue LED chips. If the first light source 101 selects two of these three types, the second and third light sources 201 and 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 can select any 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 select the second blue LED chip.

[0052] The first package 102 contains a first phosphor 103, which includes at least one yellow-green phosphor with a peak wavelength of 500-580nm and at least one red phosphor with a peak wavelength of 610-680nm. In order to obtain a wider full width at half maximum (FWHM), the first phosphor 103 contains both yellow-green and red phosphors with different peak wavelengths. Of course, the yellow-green phosphor and red phosphor mentioned here are not limited to only one chemical component. They can also be mixed phosphors, that is, more than one phosphor can be mixed to ultimately form the yellow-green phosphor or red phosphor we need. The yellow-green phosphor can be (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce or any one of them or a combination of them. Red phosphor can be selected from CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ 、K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ Any one or combination of .

[0053] Multiple blue LED chips from the first light source 101 are connected in series or in parallel and arranged within the receiving groove 61. After the light from these chips excites the first phosphor 103, the spectral energy distribution of the light emitted by the first light-emitting unit 100 is shown as curve 100 in FIG3 . FIG3 is a relative spectral intensity graph. Each curve in the graph has been normalized, and each point on the curve represents the energy level at a particular wavelength on the horizontal axis. As shown in FIG3 , the spectral curve of the light emitted by the first light-emitting unit 100 includes at least three spectral emission peaks: a first peak wavelength P11 located between 430 and 445 nm, a second peak wavelength P12 located between 460 and 480 nm, and a spectral intensity at the second peak wavelength P12 that is 60-90% of the spectral intensity at the first peak wavelength P11; and a third peak wavelength P13 located between 520 and 550 nm, and a spectral intensity at the third peak wavelength P13 that is 20-50% of the spectral intensity at the first peak wavelength P11. The light emitted by the first light-emitting unit 100 is blue-green in color, and is located in 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, that is, area A marked in Figure 2.

[0054] The second light-emitting unit 200 includes a second light source 201 and a second package 202. The second light source 201 is placed at the bottom of the second receiving groove 62 and is electrically connected to the outside through two pins 52a and 52b. The second package 202 fills the second receiving groove 62 and covers the second light source 201. The second light source 201 is a blue LED that emits blue light with a peak wavelength in the range of 445-460nm. The second package 202 contains a second phosphor 203, which includes at least one blue-green phosphor with a peak wavelength of 485-515nm, at least two yellow-green phosphors with a peak wavelength of 500-580nm, and at least one red / orange phosphor with a peak wavelength of 580-620nm. The blue-green phosphor can be (Ba, Sr)Si2N2O2:Eu. The yellow-green phosphor can be (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 Any combination of two or more of :Ce. Orange / red phosphors can be selected from CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ 、K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ 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 FIG3 , the first peak wavelength P21 is located between 445 and 460 nm, the second peak wavelength P22 is located between 520 and 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 between 560 and 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 curve 200 in FIG3 . The light color of the light emitted by the second light-emitting unit 200 is green, and on the 1931 CIE chromaticity diagram, it is located in the quadrilateral area surrounded by four points B1 (0.33, 0.42), B2 (0.36, 0.47), B3 (0.40, 0.45), and B4 (0.37, 0.42), that is, area B marked in Figure 2.

[0055] The third light-emitting unit 300 includes a third light source 301 and a third package body 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 and 53b. The third package body 302 fills the third receiving groove 63 and covers the third light source 301. The third light source 301 is a blue light LED that emits blue light with a peak wavelength in the range of 445-460nm. The third package body 302 contains a third phosphor 303, which includes at least one yellow-green phosphor with a peak wavelength of 520-580nm and at least one red phosphor with a peak wavelength of 630-680nm. The third phosphor 303 needs to include both yellow-green and red phosphors. Of course, these two phosphors can also be mixed phosphors. The yellow-green phosphor can be selected from (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce or any one of them or a combination of them. Red phosphor can be selected from CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ 、K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ Any one or more 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, with a first peak wavelength P31 located between 630 and 680 nm, a second peak wavelength P32 located between 540 and 580 nm, and a spectral intensity at the second peak wavelength P32 that is 10-40% of the spectral intensity at the first peak wavelength P31. Its spectral energy distribution is shown as curve 300 in FIG3 . The light emitted by the third light-emitting unit 300 is orange-red and, on the 1931 CIE chromaticity diagram, 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), i.e., region C marked in FIG2 . Because 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 of the light emitted by the third light-emitting unit 300 is less than 10%. The blue light content of less than 10% refers to the fact that the energy in the blue light band of 440-480nm accounts for less than 10% of the total energy of the light emitted by the light-emitting unit.

[0056] We all know that the three primary colors can be mixed to form white light. In previous solutions, white light is formed by mixing RGB three colors. In this embodiment, the existing RGB solution 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 light emitted by these three is 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 uses the blackbody radiation spectrum as the target spectrum. When the target color temperature is above 4000K, the spectrum of the light emitted by the light source module 1 uses the simulated daylight spectrum as the target spectrum. The daylight spectrum described in this application is the relative spectral power distribution of the D series standard lighting bodies 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:

[0057] Where T represents color temperature, h is Planck constant, and c is the speed of light (3x10 8 m / s), K is the Boltzmann constant, T B is the absolute temperature of the black body, and λ is the wavelength of radiation.

[0058] In order to evaluate the degree of match between the simulated white light spectrum obtained in the embodiment and the target spectrum, and since there is currently no relevant evaluation standard issued by an authoritative organization, the spectral matching degree adopted in this application, namely the spectral similarity (SS) evaluation method, is based on the average spectral deviation (ASD) value published by Bridgelux Inc. USA. The spectra of the reference light sources of different color temperatures used in the application are the same as those of the Illuminating Engineering Society of North America. The TM-30 standard is similar to the IES (International Institute of Standards and Technology) published in the United States. Specifically, when the color temperature is above 5000K, the reference spectrum is based on the D-series standard illuminant. When the color temperature is below 4000K, the reference spectrum is based on the spectrum emitted by a blackbody radiation source. For color temperatures between 4000K and 5000K, the reference spectrum is a mixed light source of a 4000K blackbody radiation source and a D50 standard illuminant. Furthermore, considering the wavelength distribution of the human eye's visual sensitivity response, the spectral deviation assessment range is limited to between 425nm and 690nm. The specific calculation method is as follows:

[0059] in, is the relative intensity of the reference light source, is the relative intensity of the light source to be evaluated, and λ is the wavelength.

[0060] By individually dimming the three light-emitting units, white light with various color temperatures can be mixed. In this embodiment, a PWM signal is used as the control signal to independently control the three color light-emitting units through PWM dimming. Different duty cycles are applied to modulate the luminous power of each light-emitting unit to achieve a mixed light effect. Table 1 lists several specific embodiments for modulating the duty cycles of the PWM signals of the three light-emitting units under different conditions to obtain a universal white light color temperature range from 2700K to 6500K. Table 1 shows the PWM duty cycles of each light-emitting unit, as well as the actual color temperature, color deviation from blackbody radiation (Duv), spectral similarity, color rendering index (CRI), color fidelity (Rf), color saturation (Rg), and special color rendering indices R1 to R15 of the full-spectrum white light achieved by light source module 1 by modulating the PWM signals of the three light-emitting units.

[0061] Table 1

[0062] Examples a, b, c, d, e, and f in the table correspond to 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 achieved. Due to individual product differences, the actual values ​​at the determined target color temperature may vary slightly. The color temperatures listed in the table are the measured color temperatures for each example. The spectral energy distribution of the full-spectrum white light obtained in each example and the comparison with the target spectrum are shown in Figures 4 to 9. Figure 4 is a comparison of the emission spectrum curves of Example a and a standard blackbody radiation source (B27); Figure 5 is a comparison of the emission spectrum curves of Example b and a standard blackbody radiation source (B30); Figure 6 is a comparison of the emission spectrum curves of Example c and a standard D40 light source; Figure 7 is a comparison of the emission spectrum curves of Example d and a standard D50 light source; Figure 8 is a comparison of the emission spectrum curves of Example e and a standard D57 light source; and Figure 9 is a comparison of the emission spectrum curves of Example f and a standard D65 light source.

[0063] In addition to the data of the embodiments listed in Table 1, the light source module 1 proposed in this application can obtain a white light color temperature that is wider than the general white light color temperature range. Table 2 lists the embodiment data of the light source module 1 in the two ranges of white light color temperature from 1800K to 2700K and 6500K to 14000K, including the control duty cycle and related light quality data of each channel.

[0064] Table 2

[0065] The spectral energy distribution of the full-spectrum white light obtained by each embodiment listed in the table and its comparison with the target spectrum are shown in Figures 10 to 13. Figure 10 is a comparison of the emission spectrum curves of embodiment g and a standard blackbody radiation source, Figure 11 is a comparison of the emission spectrum curves of embodiment h and a standard blackbody radiation source; Figure 12 is a comparison of the emission spectrum curves of embodiment i and a standard D-series light source; and Figure 13 is a comparison of the emission spectrum curves of embodiment j and a standard D-series light source.

[0066] As can be seen from Tables 1 and 2, the full-spectrum white light emitted by the mixed light of the first light-emitting unit 100, the second light-emitting unit 200, and the third light-emitting unit 300 in this embodiment has a wide color temperature coverage range, ranging from 1800-14000K, and the color deviation Duv from the blackbody radiation is less than 0.003, ensuring that the light color of the entire light source module is purer under 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, within the adjustable color temperature range of the light source module, its white light spectrum reaches the level of the 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 reference values ​​for the embodiments of this application. Among them, the spectral similarity of existing conventional Ra80 white light LEDs is 68%, the spectral similarity of conventional Ra90 white light LEDs is 78%, and the spectral similarity of conventional Ra95 white light LEDs 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, due to its high spectral similarity, the color rendering index CRI of the white light emitted by the light source module is greater than 95 when the color temperature of the white light is between 1800-14000K, and the color rendering index CRI is greater than 97 when the color temperature of the white light is between 2700-14000K, of which 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. In summary, the light source module 1 has the advantages of a wider color temperature range, high spectral similarity, and good color rendering.

[0067] In the embodiment of FIG1 , a packaging structure of a light source module 1 is shown, in which four light-emitting units are packaged as one. In other preferred embodiments, each light-emitting unit can also be packaged independently and finally arranged on the same substrate to form a light source module 1. In addition, the first light-emitting unit 100, the second light-emitting unit 200, and the third light-emitting unit 300 can also be packaged independently, and this application does not limit this. There are many packaging structures that can be used 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, we take a light-emitting unit with a similar structure, the fourth light-emitting unit 400, as an example to illustrate some other preferred independent packaging forms. The fourth light-emitting unit 400 also includes a fourth light source 401, a fourth seal 402 covering it, and a fourth phosphor 403. The packaging structure of the embodiments of FIG14a and FIG14b also adopts a bracket structure like the embodiment of FIG1 , and a fourth accommodating groove 64 is formed on the bracket. FIG14a 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 applied to the surface of the fourth light source 401 by spraying or coating, and then the fourth container 64 is filled with the fourth package 402. In FIG14b, the fourth container 64, which already contains the fourth light source 401, is first filled with the fourth package 402, and then the fourth phosphor 403 is applied to the upper surface of the fourth package 402 by spraying or coating. As previously mentioned, the fourth phosphor 403 of the fourth light-emitting unit 400 includes a variety of different phosphors. The difference between the packaging structure of FIG14c and FIG14b is that the different types of phosphors are applied in layers, thus forming a double-layer structure as shown in the figure. Figure 14 illustrates a high-power ceramic package. A ceramic or metal substrate 94 is used. A fourth light source 401 is mounted on the substrate 94. A fourth phosphor 403 is applied to the surface of the fourth light source 401 to form a light conversion layer by spraying, laminating with a fluorescent film, or attaching a fluorescent ceramic sheet. The fourth package body 402 is then filled and filled to cover both the fourth phosphor 403 and the fourth light source 401 using injection molding. Figure 14e illustrates a CSP package suitable for high-power chips. A ceramic or metal substrate 94 is used. After the fourth phosphor 403 and the fourth package body 402 are mixed, a light conversion layer is formed on the surface of the fourth light source 401 using fluorescent film lamination. Figure 14f has a similar structure to Figure 14e. Also using a ceramic or metal substrate 94, a fourth phosphor 403 is applied to the surface of the fourth light source 401 to form a light conversion layer by spraying or laminating with a fluorescent film. The fourth package body 402 is then positioned on the outer surface of the fourth phosphor 403 to complete the package. All of the above approaches can achieve the objectives of this application and are not intended to be limiting.

[0068] Another preferred embodiment of the present application is a lighting system as shown in FIG15 , which includes the light source module 1 and the driving circuit 2 in the above embodiment.

[0069] The driving circuit 2 includes a power conversion module 21, a control module 22 and an LED driving module 23. The power conversion module 21 is connected to an external power source and converts the external power source into the DC power required by the light source module 1. The control module 22 includes a communication module that receives dimming / color adjustment commands from the outside and generates a control signal based on this. The communication module can be a wired or wireless communication module, which is not limited in this application. The LED driving module 23 inputs the DC power output by the power conversion module 21 and the control signal from the control module 22, adjusts the DC power according to the control signal, and outputs the driving current / voltage required by each light-emitting unit after adjustment to the first light-emitting unit 100, the second light-emitting unit 200, the third light-emitting unit 300 in the light source module 1. Therefore, the LED driving 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 lighting system includes multiple light source modules 1 , as shown in FIG15 , the first light emitting unit 100 , the second light emitting unit 200 , and the third light emitting unit 300 in each light source module 1 are connected in series and electrically connected to the LED driving module 23 .

[0070] As mentioned above, the color temperature of the light source module 1 of the embodiment is adjustable in the range of 1800-14000K, and it is necessary to simulate the target spectrum. Therefore, the control module 22 includes a storage module, which 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 produces different color temperatures. The control parameter value can be a voltage value, a current value, or a PWM signal. When the light-emitting unit does not participate in light mixing, the control parameter value of the light-emitting unit is zero. When a color temperature change request is sent from the outside, the control module 22 receives a command, reads the relevant value in the storage module, forms a control signal and sends it to the LED driver module 23, adjusts 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 the target color light 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 as shown in Table 1 and Table 2. Because light source module 1 selects light-emitting units of specific colors and controls them according to preset parameters, the resulting full-spectrum white light covers a wider color temperature range than conventional mixed-light white light, from 1800-14000K. The color deviation (Duv) from blackbody radiation is less than 0.003, ensuring that the entire light source module produces a purer light color at any color temperature. Furthermore, the resulting white light spectrum is highly similar to the target spectrum. When the color temperature of the white light emitted by the light source module is between 2400-14000K, the spectral similarity exceeds 88%, essentially achieving full-spectrum white light within the light source module's adjustable color temperature range. In terms of color rendering, thanks to its high spectral similarity, the light source module emits white light with a CRI greater than 95 for temperatures between 1800 and 14000K, and greater than 97 for temperatures between 2700 and 14000K. R1 through R15 are all greater than 90, and the color fidelity Rf based on the TM-30 standard is greater than 95, with color saturation Rg between 100 ± 2. In summary, light source module 1 offers the advantages of a wide color temperature range, high spectral similarity, and excellent color rendering.

[0071] The above-mentioned light source module and lighting system can be applied to various types of lamps. Figure 16 shows a lamp D1, a preferred embodiment of the present application. The lamp D1 is a lamp panel, including the lighting system described above. In other preferred embodiments, it can also be a chandelier, a ceiling lamp, etc., or the light source module 1 can also be used as an ordinary white light chip in various types of lamps such as table lamps, downlights, and spotlights. The lamp D1 includes a chassis 86, a surface frame 88 provided with a diffusion plate 89, a plurality of light source modules 1 arranged on the light source board 85, and a power box 87. The aforementioned drive circuit 2 is arranged in the power box 87. In the lamp, 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 are wired separately, and the same type of light-emitting units in each light source module 1 are connected in series with each other and connected to the drive circuit 2 in the power box 87 to form the aforementioned lighting system. The lamp D1 can also be provided with a controller, a heat dissipation device, and a light distribution component according to the function and requirements of the specific lamp. The controller can be used to adjust the color and intensity of the light emitted by the light source module L1, and the light distribution component can be a lampshade, lens, diffusion element, light guide, etc. in addition to the diffusion plate in the embodiment. This application does not limit this.

[0072] The above description of the preferred embodiments of the present application is for illustration and description purposes and is not intended to be exhaustive or to limit the present application to the specific forms disclosed. Obviously, many modifications and changes may be made, which may be obvious to those skilled in the art and should be included within the scope of the present application as defined by the appended claims.

Claims

1. A light source module, wherein: comprising a first light emitting unit, a second light emitting unit, and a third light emitting unit which are electrically independent of each other; The first light-emitting unit includes a first light source, a first package covering the first light source, and a first phosphor, wherein the light emitted by the first light-emitting unit includes at least three spectral emission peaks, a first peak wavelength is located at 430-445 nm, a 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, a 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, and the light color is blue-green light located in a 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; The second light-emitting unit includes a second light source, a second package covering the second light source, and a second phosphor, wherein the light emitted by the second light-emitting unit includes at least three spectral emission peaks, wherein 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, and 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, and the light color is green light located in a quadrilateral area surrounded 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 package 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, a first peak wavelength is located at 630-680nm, a second peak wavelength is located at 540-580nm, and the spectral intensity at the second peak wavelength is 10-40% of the spectral intensity at the first peak wavelength. The light color is orange-red light located in a quadrilateral area surrounded 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, wherein: The blue light content of the third light emitting unit is less than 10%.

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

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

5. The light source module according to claim 1, wherein: The first phosphor includes at least one yellow-green phosphor with a peak wavelength of 500-580 nm and at least one red phosphor with a peak wavelength of 610-680 nm. The yellow-green phosphor is (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce; the red phosphor is CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ ,K2GeF 6 :Mn 4+ 、K2TiF6: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 of 485-515 nm, at least two yellow-green phosphors with a peak wavelength of 500-580 nm, and at least one red / orange phosphor with a peak wavelength of 580-620 nm. The blue-green phosphor is (Ba, Sr)Si2N2O2:Eu; the yellow-green phosphor is (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce; the red / orange phosphor is CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ ,K2GeF 6 :Mn 4+ 、K2TiF6: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 of 520-580 nm and at least one red phosphor with a peak wavelength of 630-680 nm. The yellow-green phosphor is (Lu, Yb, Tb)3(Al, Ga)5O 12 :Ce, Ga-Y3Al5O 12 :Ce、Y3(Al,Ga)5O 12 :Ce; the red phosphor is CaAlSiN3:Eu, (Ca, Sr)AlSiN3:Eu, (Ba, Sr, Ca, Mg)2Si5N8:Eu, K2SiF6:Mn 4+ ,K2GeF 6 :Mn 4+ 、K2TiF6:Mn 4+ .

8. The light source module according to claim 1, wherein: The color temperature of the white light formed by the mixture of the light emitted by 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 black body radiation is less than 0.003; The white light simulated target spectrum formed by the mixture of the light emitted by the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit has a similarity with the target spectrum of more 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 lower than 4000K, the target spectrum is the blackbody radiation spectrum. The white light generated by the mixture of the light emitted by 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 1800-14000K; The white light formed by the mixture of the light emitted by 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, wherein 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.

9. The light source module according to claim 1, wherein: The light source module is a packaged chip, which includes a main body, on which a first receiving groove, a second receiving groove and a third receiving groove are arranged. The first light source and the first phosphor, the second light source and the second phosphor, the third light source and the third phosphor are arranged in the first receiving groove, the second receiving groove and the third receiving groove, respectively. The first packaging body, the second packaging body and the third packaging body fill the first receiving groove, the second receiving groove and the third receiving groove, respectively, and cover the first light source, the second light source and the third light source.

10. A lighting system, wherein: include: Light source and driving circuit, The light source comprises at least one light source module according to any one of claims 1 to 9; 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 thereto, and 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.

11. The lighting system according to claim 10, wherein: The driving circuit comprises: A power conversion module, which converts an external power source into a DC power source required by the light source module; A control module, generating a control signal; an LED driving module, receiving the DC power output by the power conversion module and the control signal from the control module, and adjusting the DC power according to the control signal, wherein the LED driving module is electrically connected to the first light-emitting unit, the second light-emitting unit and the third light-emitting unit respectively and outputs the driving current / voltage required by each light-emitting unit after adjustment; The control signal is a PWM signal.

12. The lighting system according to claim 11, wherein: The control module includes a communication module, which receives a dimming / color adjustment command from the outside and generates the control signal based on the command.

13. The lighting system according to claim 11, wherein: The control module includes a storage module storing preset control parameter values, wherein the control parameter values ​​are 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, and the light source module is controlled according to the control parameter values, and the color temperature of white light formed by the mixture of the light emitted by 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 black body radiation is less than 0.003, and the color rendering index CRI is greater than 95; The light source module is controlled to simulate the target spectrum according to the control parameter value, and the similarity with the target spectrum is greater than 88% in 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 lower than 4000K, the target spectrum is the blackbody radiation spectrum; The light source module is controlled according to the control parameter value, and the color rendering index CRI of the white light emitted by the light source module is greater than 97 in the range of 2700-14000K, wherein R1-R15 are 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.

14. The lighting system according to claim 11, wherein: The light source includes more than two light source modules, and the first light emitting unit, the second light emitting unit, and the third light emitting unit in each light source module are respectively connected in series and electrically connected to the LED driving module.

15. A lamp, wherein: It comprises the light source module as claimed in any one of claims 1 to 9, or comprises the lighting system as claimed in any one of claims 10 to 14.

Images