CN106870976B - Light source module and lighting device comprising same - Google Patents
Light source module and lighting device comprising same Download PDFInfo
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- CN106870976B CN106870976B CN201710222549.9A CN201710222549A CN106870976B CN 106870976 B CN106870976 B CN 106870976B CN 201710222549 A CN201710222549 A CN 201710222549A CN 106870976 B CN106870976 B CN 106870976B
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- 238000001228 spectrum Methods 0.000 claims abstract description 23
- 238000009877 rendering Methods 0.000 claims abstract description 19
- 238000005286 illumination Methods 0.000 claims abstract 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 65
- 238000000295 emission spectrum Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 150000004767 nitrides Chemical class 0.000 claims description 11
- 150000004645 aluminates Chemical group 0.000 claims description 8
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- SBFDPWWVJYLRGG-UHFFFAOYSA-N [N]=O.[P] Chemical group [N]=O.[P] SBFDPWWVJYLRGG-UHFFFAOYSA-N 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000001748 luminescence spectrum Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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Abstract
The utility model provides a light source module and use lighting device of light source module, through adjusting the peak wavelength, peak intensity and the color coordinates of blue light, red light and green light in the illumination light that the light source module sent to predetermine within, make the illumination light that the light source module sent have specific spectral distribution, not only consider the evaluation of color theory illumination effect, still consider the influence of spectrum to actual lighting effect, the luminescent material influence of light has been considered simultaneously, a travelling comfort is high and the preference is high, high color rendering index and high colour gamut index, compare with sunlight, the effect is close light source.
Description
Technical Field
The invention relates to a light source module and a lighting device comprising the same.
Background
With the advent and development of the third lighting technology revolution, LED lighting fixtures are widely used, and the requirements of people on the light quality of LED lighting are also increasing. However, the LED is temporarily unable to achieve the light quality of the conventional light source, and there are inherent defects in comfort and color rendering, which is also a prominent problem in consumer awareness of the current LED products.
In view of this situation, we are urgent to research and find white LED light sources that are more comfortable, have higher color rendering, and can compete with the light color effects of daylight and halogen tungsten lamps.
Disclosure of Invention
The invention aims to solve the problems and find an LED light source which can simultaneously achieve luminous efficiency, comfort and color rendering.
The invention provides a light source module for realizing the functions, which is characterized by comprising the following components:
a blue light generating part for emitting blue light;
a green light generating part for emitting green light;
A red light generating part for emitting red light;
the peak wavelength of the blue light is in the range of 430-470 nm, and the half width of the emission spectrum is in the range of 15-35 nm;
the peak wavelength of the green light is in the range of 510-560 nm, and the half width of the emission spectrum is in the range of 80-130 nm;
the peak wavelength of the red light is in the range of 600-660 nm, and the half width of the emission spectrum is in the range of 70-105 nm;
The peak intensity of the green light is 40% -66% of the peak intensity of the blue light;
the peak intensity of the red light is 40% -60% of the peak intensity of the blue light;
the irradiation light emitted by the light source module accords with the following conditions in the CIE1931 color coordinate system:
the abscissa X is in the range of 0.309-0.349; the ordinate Y is in the range of 0.320-0.360.
Further, the light emitted by the light source module further satisfies the following conditions: and under the same wavelength, the difference A (lambda) between the change rate A1 (lambda) of the adjacent wavelength spectrum intensity of the luminous spectrum of the light source module and the change rate A2 (lambda) of the adjacent wavelength spectrum intensity of the sunlight reference spectrum output by the same lumen of the light source module is within the range of [ -5.0,5.0 ].
Further, the A (lambda) is within the interval [ -3.0,3.0 ].
Further, the half width of the emission spectrum of the green light is in the range of 80-100 nm or 110-130 nm.
Further, the half width of the emission spectrum of the red light is in the range of 70-85 nm or 95-105 nm.
Further, the blue light generating part is a blue light LED chip.
Further, the green light generating part includes a green phosphor that absorbs light emitted from the blue light generating part and emits green light by wavelength conversion.
Further, the red light generating part includes a red light phosphor that absorbs light emitted from the blue light generating part and emits red light by wavelength conversion.
Further, the blue light generating part, the green light generating part and the red light generating part are packaged into a whole, wherein the blue light generating part is a blue light LED, the green light generating part is a green light fluorescent body which absorbs light emitted by the blue light generating part and emits green light through wavelength conversion, and the red light generating part is a red light fluorescent body which absorbs light emitted by the blue light generating part and emits red light through wavelength conversion.
Further, the green phosphor is an aluminate system, or a silicate system, or a nitride system, or an oxynitride system, or a combination of any two of the above.
Further, the red phosphor is a nitride system, or a silicate system, or a combination of both.
Further, the abscissa X is in the range of 0.319-0.339; the ordinate Y is in the range of 0.330 to 0.350.
Further, the abscissa X is in the range of 0.324-0.334; the ordinate Y is in the range of 0.335 to 0.345.
Further, the color temperature of the light emitted by the light source module is within the range of 4800K-6800K.
Further, the color rendering parameter CRI of the light emitted by the light source module is greater than 85.
Further, the color rendering index Rf of the light emitted by the light source module is greater than 85.
Further, the color rendering index R9 of the light emitted by the light source module is greater than 50.
Further, the color gamut index Rg of the light emitted by the light source module is greater than 95.
The invention also provides a lighting device, characterized by comprising:
A light source module as described above;
And the power supply module is connected with the light source module and provides power required by work for the light source module.
Further, the lighting device further comprises a controller, wherein the controller is connected with the light source module and is used for adjusting the irradiation light emitted by the light source module.
The light source module provided by the invention has specific spectral distribution, not only considers the evaluation of the lighting effect by the color theory, but also considers the influence of the spectrum on the actual lighting effect, and simultaneously considers the influence of the luminescent material on the spectrum, thereby obtaining the light source with high comfort, high preference, high color rendering index and high color gamut index, and similar effect compared with the sunlight.
Drawings
FIG. 1 is a schematic view of the structure of a lighting device of the present invention;
FIG. 2 is a graph of the relative spectral energy distribution of example 1 of the present invention;
FIG. 3 is a graph showing the distribution of A (lambda) in example 1 of the present invention;
FIG. 4 is a graph of the relative spectral energy distribution of example 2 of the present invention;
FIG. 5 is a graph showing the distribution of A (lambda) in example 2 of the present invention;
FIG. 6 is a graph of the relative spectral energy distribution of example 3 of the present invention;
FIG. 7 is a graph showing the distribution of A (lambda) in example 3 of the present invention;
FIG. 8 is a graph of the relative spectral energy distribution of example 4 of the present invention;
FIG. 9 is a graph showing the distribution of A (lambda) in example 4 of the present invention;
FIG. 10 is a graph of the relative spectral energy distribution of example 5 of the present invention;
FIG. 11 is a graph showing the distribution of A (lambda) in example 5 of the present invention;
FIG. 12 is a graph of the relative spectral energy distribution of example 6 of the present invention;
FIG. 13 is a graph showing the distribution of A (. Lamda.) in example 6 of the present invention;
FIG. 14 is a CIE1931 color coordinate diagram for embodiments 1-6 of the present invention;
fig. 15 is a schematic structural diagram of a light source module according to the present invention.
Detailed Description
The invention provides a light source module and a lighting device, which are further described in detail below with reference to the accompanying drawings and the specific embodiments.
The light source module provided by the invention is a cold white light source with a color temperature of 4800K-6800K, and can be applied to the lighting lamp 101 shown in fig. 1 for daily lighting. The lighting fixture 101 includes a power driver (not shown) and a controller 102, a heat sink 103, a lighting module 104, a lamp housing 105, and the like. The controller 102 may be used to adjust the light color and intensity of the lighting module 104, and the lamp housing 105 may be replaced by other optical elements, such as lenses, diffusion elements, light guides, etc., according to the design of the lighting fixture 101, and may not include a heat sink. The light source module 104 includes a blue light generating portion that outputs a blue light component, a green light generating portion that outputs a green light component, and a red light generating portion that outputs a red light component.
The light emitting parts of the light source module 104 with different colors can be LED chips or fluorescent materials capable of converting the wavelength of light, or a combination of the LED chips and the fluorescent materials, and the fluorescent materials can select fluorescent powders of different systems according to different emitted colors. The blue light generating section may be a single-color LED chip, which is an LED chip that emits light by direct excitation with a semiconductor material and that does not include a phosphor, or may be a mode in which the LED chip is combined with a phosphor, that is, the blue light generating section includes a semiconductor light emitting element (LED chip) and a blue light phosphor that absorbs light emitted from the semiconductor light emitting element (LED chip) and emits blue light by wavelength conversion, and the semiconductor light emitting element may be a single-color LED chip that emits ultraviolet light. The red light generating section is similar to the blue light generating section in that it may employ a single-color LED chip, but in a preferred embodiment the red light generating section includes a red phosphor that absorbs light emitted from the semiconductor light emitting element and emits red light by wavelength conversion. And the green light generating section includes a green light phosphor that absorbs light emitted from the semiconductor light emitting element and emits green light by wavelength conversion, and the kind of the green light phosphor includes an aluminate system such as YAG, ga-YAG, lu-AG, tbAG, or the like, or a silicate system, a nitride system, a oxynitride system lamp. The green light generating part can be excited by one kind of fluorescent body to generate green light, or can be combined by more than two kinds of fluorescent bodies, even can be combined by fluorescent bodies with various peak wavelengths, when the fluorescent bodies are combined by various fluorescent bodies, the fluorescent bodies are not limited to one component, for example, can be different green light fluorescent bodies in two white light LEDs, and the spectrum intensity between 510 nm and 560nm needed by users can be obtained through superposition of the spectrums generated by the fluorescent bodies. The combination of such phosphors is not limited to the green light generation section, and when the blue light generation section and the red light generation section contain phosphors, phosphors of a plurality of components may be used, and these phosphors may be distributed in different devices. It should be noted that the red light generating portion and the green light generating portion are only one description for explaining the present invention, and it is understood that the red light generating portion performs the function of the red light generating portion and contributes to the green light emission, that is, the green light generating portion is composed of the green light phosphor and the red light phosphor, if the emission bandwidth of the red light phosphor is wide and a part of energy is necessarily in the green light region.
By means of specific proportion design of different generating parts and combining with data of visual experiments, the design scheme of the light source module 104 is finally determined, as shown in fig. 15, wherein the blue light generating part 1041 is a blue light LED, the green light generating part 1042 is green light fluorescent powder, the red light generating part 1043 is red light fluorescent powder, the light source module 104 is a packaged white light LED chip, a white spectrum is formed, the color temperature is between 4800K and 6800K, and color rendering parameters CRI, R9, rf, a color gamut index Rg and the like of the spectrum all have higher values. The light source module 104 has three spectral emission peaks corresponding to the blue light generation part, the red light generation part and the green light generation part, the first emission peak has a wavelength of 430-470 nm, the blue light generation part generates the emission spectrum with a half width of 15-35 nm, and the spectral intensity is the largest of the three emission peaks. The green light is generated by the green light generating part to form a second emission peak, the wavelength position of the second emission peak is 510-560 nm, and the spectral intensity is 40-66% of the intensity of the first emission peak. Wherein the half width of the emission spectrum of the green phosphor is 80 to 130nm, and in a specific embodiment, most of the green phosphor of the present invention has a half width falling in two ranges of 80 to 100nm and 110 to 130nm, so that these two values are more preferable. The third emission peak wavelength position is 600-660 nm, and the spectrum intensity is 40% -60% of the first emission peak intensity. The half width of the emission spectrum of the red phosphor is in the range of 70 to 105nm, and in a specific embodiment, most of the red phosphor of the present invention has half widths in the two ranges of 70 to 85nm and 95 to 105nm, so that these two values are more preferable.
As a feature of the present invention, we denote the rate of change of the adjacent wavelength spectrum intensity of the emission spectrum of the light source module 104 by A1 (λ), and the rate of change of the adjacent wavelength spectrum intensity of the reference spectrum of the sunlight, which is equal to the lumen output of the light source module 104 by A2 (λ), in the same wavelength, the difference A (λ) between A1 (λ) and A2 (λ) is within the interval [ -5.0,5.0], i.e., -5.0. Ltoreq.A1 (λ) -A2 (λ). Ltoreq.5.0, and in a more preferred embodiment, -3.0. Ltoreq.A1 (λ) -A2 (λ). Ltoreq.3.0.
Here we describe that the adjacency is in a calculation interval of 5nm, that is, we calculate the rate of change of the spectrum intensity of the adjacency wavelength at intervals of 5nm, and the specific operation formulas about A1 (λ) and A2 (λ) are as follows:
Wherein: p (lambda) is the light emission spectrum of the light source module, R (lambda) is the light emission spectrum of the reference sunlight with the same color temperature as the light source module, and V (lambda) is the photopic spectrum photopic efficiency function.
The luminescence spectrum R (λ) of the reference sunlight is calculated as follows:
R(λ)＝S0(λ)+S1(λ)*(-1.3515-1.7703*XD+5.9114*YD)/(0.0241+0.2562*XD-
0.7341*YD)+S2(λ)*(0.03-31.4424*XD+30.0717*YD)/(0.0241+0.2562*XD-0.7341*YD)；
XD＝-4.607*10^9/CCT^3+2.9678*10^6/CCT^2+0.09911*10^3/CCT+0.244063;
YD＝-3*XD^2+2.87*XD-0.275；
CCT is the spectral color temperature value and S 0 (λ) is the standard solar spectrum Daylight 6500K. S 1 (λ) and S 2 (λ) are correction coefficients.
The color coordinate range of the light color of the light source module 104 is x=0.309-0.349, and y=0.320-0.360; the preferred color coordinate range is x=0.319-0.339 and y=0.330-0.350; more preferably, the range is x=0.324 to 0.334 and y=0.335 to 0.345. The color rendering parameters CRI and Rf of the spectrum are not less than 85.0, R9 is not less than 50.0, and the color gamut index Rg is not less than 95.0.
The following describes several preferred embodiments of the light source module 104.
In embodiment 1, a blue LED chip having a peak wavelength of 450±5nm is provided as a blue light generating section, a red light emitting section which is a red light emitting phosphor capable of converting a part of blue light emitted from the blue light generating section into red light, and a green light emitting section which is a green light emitting phosphor capable of converting a part of blue light emitted from the blue light generating section into green light, are provided on the light source module 104. In this embodiment, the blue LED chip is used as an excitation light source for both the blue light generating section and the red light generating section and the green light generating section. Fig. 2 is a graph showing the relative spectral power distribution of embodiment 1, in which the wavelength of the emitted blue light energy from the blue LED chip forming the first peak in the graph is 450nm, and the FWHM of the half width is 21.8±5nm (where 21.8 is a measured value of one light source module, and the measured value of the half width of each light source module may deviate slightly in the same batch in actual production, so there is a positive and negative interval, and the subsequent values are the same). The green phosphor converts part of blue light emitted by the blue LED chip into green light to form a second peak, the green phosphor in the embodiment is Lu-AG in an aluminate system, the main peak wavelength of the second emission peak is 515nm, the half width of the emission spectrum of the green phosphor is 129.4+/-5 nm, and the spectral intensity of the second emission peak is 55.0% of that of the first emission peak. The red phosphor (nitride phosphor in this embodiment) converts part of the blue light emitted from the blue LED chip into red light, and forms a third peak in fig. 2, the emission peak wavelength is 615nm, the full width at half maximum FWHM is 80±5nm, and the peak intensity is about 55.8% of the first peak intensity. The a (λ) distribution of example 1 is shown in fig. 3, where a (λ) =a1 (λ) -A2 (λ), and it can be seen from the figure that the value of a (λ) is between-2.4 and 2.6. The color coordinates of example 1 are x=0.3434, y= 0.3520, color temperature 5067K, color rendering index CRI 93.5, R9 64.5, rf 90.6, and color gamut index Rg 100.4.
In embodiment 2, a blue LED chip having a peak wavelength of 450±5nm is provided as a blue light generating section, a red light phosphor capable of converting a part of blue light emitted from the blue light generating section into red light is provided as a red light generating section, and a green light phosphor capable of converting a part of blue light emitted from the blue light generating section into green light is provided as a green light generating section on the light source module 104. In this embodiment, the blue LED chip is used as an excitation light source for both the blue light generating section and the red light generating section and the green light generating section. Fig. 4 is a graph showing the relative spectral energy distribution of example 2, wherein the peak wavelength of the blue light emitted from the blue LED chip forming the first peak in the graph is 450nm, and the FWHM of the half width is 21.8±5nm. The green phosphor converts part of blue light emitted by the blue LED chip into green light to form a second peak, the green phosphor in the embodiment is Ga-YAG in an aluminate system, the main peak wavelength of the second emission peak is 540nm, the half width of the emission spectrum of the green phosphor is 90+/-5 nm, and the spectral intensity of the second emission peak is 51.0% of that of the first emission peak. The red phosphor (nitride phosphor in this embodiment) converts part of the blue light emitted from the blue LED chip into red light, and forms a third peak in fig. 4, the emission peak wavelength is 615nm, the full width at half maximum FWHM is 80±5nm, and the peak intensity is about 44.2% of the first peak intensity. The distribution of a (λ) =a1 (λ) -A2 (λ) of example 2 is shown in fig. 5, and it can be seen from the graph that the value of a (λ) is between-2.7 and 3.1. The color coordinates of embodiment 2 are x=, 0.3221, y= 0.3310, color temperature 5973K, color rendering index CRI 92.4, R9 85.2, rf 88.0, and color gamut index Rg 102.0.
In embodiment 3, a blue LED chip having a peak wavelength of 450±5nm is provided on the light source module 104 as a blue light generating portion, a red light phosphor capable of converting a part of blue light emitted from the blue light generating portion into red light is provided as a red light generating portion, and a green light phosphor capable of converting a part of blue light emitted from the blue light generating portion into green light is provided as a green light generating portion. In this embodiment, the blue LED chip is used as an excitation light source for both the blue light generating section and the red light generating section and the green light generating section. Fig. 6 is a graph showing the relative spectral energy distribution of example 3, wherein the peak wavelength of the blue light emitted from the blue LED chip forming the first peak in the graph is 450nm, and the FWHM of the half width is 21.8±5nm. The green phosphor converts part of blue light emitted by the blue LED chip into green light to form a second peak, the green phosphor in the embodiment is Ga-YAG in an aluminate system, the main peak wavelength of the second emission peak is 535nm, the half width of the emission spectrum of the green phosphor is 90+/-5 nm, and the spectral intensity of the second emission peak is 57.2% of that of the first emission peak. The red phosphor (nitride phosphor in this embodiment) converts part of the blue light emitted from the blue LED chip into red light, and forms a third peak in fig. 6, the emission peak wavelength is 625nm, the full width at half maximum FWHM is 80±5nm, and the peak intensity is about 49% of the first peak intensity. The distribution of a (λ) =a1 (λ) -A2 (λ) of example 3 is shown in fig. 7, and it can be seen from the graph that the value of a (λ) is between-2.4 and 2.9. The color coordinates of embodiment 3 are x=0.3292, y= 0.3391, the color temperature 5634K, the color rendering index CRI is 93.8, R9 is 94.0, rf is 89.7, and the color gamut index Rg is 102.8.
In embodiment 4, a blue LED chip having a peak wavelength of 445±5nm is provided as a blue light generating section, a red light phosphor capable of converting part of blue light emitted from the blue light generating section into red light is provided as a red light generating section, and a green light phosphor capable of converting part of blue light emitted from the blue light generating section into green light is provided as a green light generating section on the light source module 104. In this embodiment, the blue LED chip is used as an excitation light source for both the blue light generating section and the red light generating section and the green light generating section. Fig. 8 is a graph showing the relative spectral energy distribution of example 4, wherein the peak wavelength of the blue light emitted from the blue LED chip forming the first peak in the graph is 445nm, and the FWHM of the half width is 21.4±5nm. The green phosphor converts part of blue light emitted by the blue LED chip into green light to form a second peak, the green phosphor in the embodiment is nitrogen oxide phosphor, the main peak wavelength of the second emission peak is 550nm, the half width of the emission spectrum of the green phosphor is 120+/-5 nm, and the spectral intensity of the second emission peak is 59.5% of that of the first emission peak. The red phosphor (nitride phosphor in this embodiment) converts part of the blue light emitted from the blue LED chip into red light, and forms a third peak in fig. 8, the emission peak wavelength is 650nm, the full width at half maximum FWHM is 80±5nm, and the peak intensity is about 43.2% of the first peak intensity. The distribution of a (λ) =a1 (λ) -A2 (λ) of example 4 is shown in fig. 9, and it can be seen from the graph that the value of a (λ) is between-2.2 and 2.5. The color coordinates of example 4 are x=0.3228, y= 0.3454, color temperature 5942K, color rendering index CRI 86.3, R9 61.3, rf 86.5, and color gamut index Rg 100.1.
In embodiment 5, a blue LED chip having a peak wavelength of 450±5nm is provided as a blue light generating section, a red light emitting phosphor capable of converting a part of blue light emitted from the blue light generating section into red light is provided as a red light generating section, and a green light emitting phosphor capable of converting a part of blue light emitted from the blue light generating section into green light is provided as a green light generating section on the light source module 104. In this embodiment, the blue LED chip is used as an excitation light source for both the blue light generating section and the red light generating section and the green light generating section. Fig. 10 is a graph showing the relative spectral energy distribution of example 5, wherein the peak wavelength of the blue light emitted from the blue LED chip forming the first peak in the graph is 450nm, and the FWHM of the half width is 21.8±5nm. The green phosphor converts part of blue light emitted by the blue LED chip into green light to form a second peak, the green phosphor in the embodiment is aluminate green powder, the main peak wavelength of the second emission peak is 530nm, the half width of the emission spectrum of the green phosphor is 122+/-5 nm, and the spectral intensity of the second emission peak is 43.9% of that of the first emission peak. The red phosphor (nitride phosphor in this embodiment) converts part of the blue light emitted from the blue LED chip into red light, and forms a third peak in fig. 10, the emission peak wavelength is 650nm, the full width at half maximum FWHM is 80.4±5nm, and the peak intensity is about 54.8% of the first peak intensity. The distribution of a (λ) =a1 (λ) -A2 (λ) of example 5 is shown in fig. 11, and it can be seen from the graph that the value of a (λ) is between-3.0 and 3.3. The color coordinates of example 5 are x=0.3436, y= 0.3253, color temperature 4948K, color rendering index CRI 90.9, R9 59.6, rf 86.1, and color gamut index Rg 108.6.
In embodiment 6, a blue LED chip having a peak wavelength of 445±5nm is provided as a blue light generating section, a red light phosphor capable of converting a part of blue light emitted from the blue light generating section into red light is provided as a red light generating section, and a green light phosphor capable of converting a part of blue light emitted from the blue light generating section into green light is provided as a green light generating section on the light source module 104. In this embodiment, the blue LED chip is used as an excitation light source for both the blue light generating section and the red light generating section and the green light generating section. Fig. 12 is a graph showing the relative spectral energy distribution of example 6, wherein the peak wavelength of the blue light emitted from the blue LED chip forming the first peak in the graph is 445nm, and the FWHM of the half width is 21.8±5nm. The green phosphor converts part of blue light emitted by the blue LED chip into green light to form a second peak, the green phosphor in the embodiment is Lu-AG in an aluminate system, the main peak wavelength of the second emission peak is 525nm, the half width of the emission spectrum of the green phosphor is 100.7+/-5 nm, and the spectral intensity of the second emission peak is 63.2% of that of the first emission peak. The red phosphor (nitride phosphor in this embodiment) converts part of the blue light emitted from the blue LED chip into red light, and forms a third peak in fig. 12, the emission peak wavelength is 650nm, the full width at half maximum FWHM is 80±5nm, and the peak intensity is about 43.3% of the first peak intensity. The distribution of a (λ) =a1 (λ) -A2 (λ) of example 6 is shown in fig. 13, and it can be seen from the graph that the value of a (λ) is between-2.2 and 2.5. The color coordinates of example 6 are x=0.3151, y= 0.3545, color temperature 6292K, color rendering index CRI 86.2, R9 62.0, rf 88.2, and color gamut index Rg 99.2.
The light color of the light source module is standard white light, and Duv is between plus and minus 0.005. Fig. 14 shows the light color coordinate values of each light source module 104 in CIE1931 color coordinates in examples 1 to 6, and it can be found that these points all fall within the coordinate range of x=0.309 to 0.349 and y=0.320 to 0.360. Among them, examples 2, 3 and 5 were found to be preferable, and the color coordinates thereof were in the range of x=0.319 to 0.339 and y=0.330 to 0.350. The optimum ranges are x=0.324 to 0.334 and y=0.335 to 0.345, and the best effect of example 3 is actually verified by visual experiments in the range of example 3.
The foregoing description of the preferred embodiments of the present invention is for the purpose of illustration and description, and is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible which may be apparent to those skilled in the art and should be included within the scope of the invention as defined by the appended claims.
Claims (19)
1. A light source module, comprising:
a blue light generating part for emitting blue light;
a green light generating part for emitting green light;
A red light generating part for emitting red light;
the peak wavelength of the blue light is in the range of 430-470 nm, and the half width of the emission spectrum is in the range of 15-35 nm;
the peak wavelength of the green light is in the range of 510-560 nm, and the half width of the emission spectrum is in the range of 80-130 nm;
the peak wavelength of the red light is in the range of 600-660 nm, and the half width of the emission spectrum is in the range of 70-105 nm;
The peak intensity of the green light is 40% -66% of the peak intensity of the blue light;
the peak intensity of the red light is 40% -60% of the peak intensity of the blue light;
the irradiation light emitted by the light source module accords with the following conditions in the CIE1931 color coordinate system:
The abscissa X is in the range of 0.309-0.349; the ordinate Y is in the range of 0.320 to 0.360,
The light emitted by the light source module also meets the following conditions: and under the same wavelength, the difference A (lambda) between the change rate A1 (lambda) of the adjacent wavelength spectrum intensity of the luminous spectrum of the light source module and the change rate A2 (lambda) of the adjacent wavelength spectrum intensity of the sunlight reference spectrum output by the same lumen of the light source module is within the range of [ -5.0,5.0 ].
2. A light source module as claimed in claim 1, characterized in that a (λ) is within the interval [ -3.0,3.0 ].
3. The light source module of claim 1, wherein the half width of the emission spectrum of the green light is in the range of 80-100 nm or 110-130 nm.
4. The light source module of claim 1, wherein the half width of the emission spectrum of the red light is in the range of 70-85 nm or 95-105 nm.
5. The light source module of claim 1, wherein the blue light generating portion is a blue LED chip.
6. The light source module of claim 5, wherein the green light generating part comprises a green light phosphor that absorbs light emitted from the blue light generating part and emits green light by wavelength conversion.
7. The light source module of claim 1, wherein the red light generating part comprises a red light phosphor that absorbs light emitted from the blue light generating part and emits red light by wavelength conversion.
8. The light source module of claim 1, wherein the blue light generating part, the green light generating part, and the red light generating part are integrally packaged, wherein the blue light generating part is a blue LED, the green light generating part is a green light phosphor that absorbs light emitted from the blue light generating part and emits green light by wavelength conversion, and the red light generating part is a red light phosphor that absorbs light emitted from the blue light generating part and emits red light by wavelength conversion.
9. A light source module as recited in claim 6 or 8, wherein the green phosphor is an aluminate system, or a silicate system, or a nitride system, or an oxynitride system, or a combination of any two of the foregoing.
10. The light source module of claim 7 or 8, wherein the red phosphor is a nitride system, or a silicate system, or a combination thereof.
11. The light source module of claim 1, wherein the abscissa X is in the range of 0.319 to 0.339; the ordinate Y is in the range of 0.330 to 0.350.
12. The light source module of claim 11, wherein X is in the range of 0.324-0.334; the ordinate Y is in the range of 0.335 to 0.345.
13. The light source module of claim 1, wherein the color temperature of the light emitted by the light source module is in the range of 4800K to 6800K.
14. The light source module of claim 1, wherein the color rendering parameter CRI of the light emitted by the light source module is greater than 85.
15. The light source module of claim 1, wherein the color rendering index Rf of the light emitted by the light source module is greater than 85.
16. The light source module of claim 1, wherein the color rendering index R9 of the light emitted by the light source module is greater than 50.
17. The light source module of claim 1, wherein the color gamut index Rg of the light emitted by the light source module is greater than 95.
18. A lighting device, comprising:
The light source module according to any one of claims 1 to 17;
And the power supply module is connected with the light source module and provides power required by work for the light source module.
19. The illumination device of claim 18, further comprising a controller coupled to the light source module for adjusting the illumination emitted by the light source module.
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| CN201710222549.9A CN106870976B (en) | 2017-04-07 | 2017-04-07 | Light source module and lighting device comprising same |
| PCT/CN2018/081970 WO2018184576A1 (en) | 2017-04-07 | 2018-04-04 | Light source module, and illumination device comprising light source module |
| EP18780528.8A EP3575669B1 (en) | 2017-04-07 | 2018-04-04 | Light source module, and illumination device comprising light source module |
| US16/594,860 US11211530B2 (en) | 2017-04-07 | 2019-10-07 | Light source and illumination device including the light source |
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| CN201710222549.9A CN106870976B (en) | 2017-04-07 | 2017-04-07 | Light source module and lighting device comprising same |
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| WO2018184576A1 (en) * | 2017-04-07 | 2018-10-11 | 苏州欧普照明有限公司 | Light source module, and illumination device comprising light source module |
| WO2019001294A1 (en) * | 2017-06-30 | 2019-01-03 | 苏州欧普照明有限公司 | Light source module and lighting device |
| CN107170736A (en) * | 2017-06-30 | 2017-09-15 | 欧普照明股份有限公司 | Light source module and lighting device |
| CN107546312A (en) * | 2017-08-24 | 2018-01-05 | 欧普照明股份有限公司 | A kind of light source module group and the lighting device including the light source module group |
| CN114963132B (en) * | 2022-05-27 | 2024-02-27 | 漳州立达信光电子科技有限公司 | LED light-emitting device and LED intelligent lighting device |
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