CN110145724B - White light source, lamp strip and lamps and lanterns - Google Patents
White light source, lamp strip and lamps and lanterns Download PDFInfo
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- CN110145724B CN110145724B CN201910356861.6A CN201910356861A CN110145724B CN 110145724 B CN110145724 B CN 110145724B CN 201910356861 A CN201910356861 A CN 201910356861A CN 110145724 B CN110145724 B CN 110145724B
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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
- 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
- F21V9/38—Combination of two or more photoluminescent elements of different materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
Abstract
The application file provides a white light source, lamp strip and lamps and lanterns. The relative spectral power distribution of the lamp beads is phi (lambda), when lambda is in a wavelength range of 420nm-660nm, the symmetrical spectral peaks are P1, P2 and P3 respectively, and the corresponding characteristics are as follows: p1 peak wavelength: 600nm-660nm, and the half-peak width is 90nm-140 nm; p2 peak wavelength: 500nm-550nm, and half-peak width of 60nm-110 nm; p3 peak wavelength: 420nm-480nm and 30nm-80nm of half-peak width. The lamp bead can emit a spectrum with small fluctuation amplitude and excellent continuity, is closer to sunlight, can provide a good illumination effect for a user, and can also obtain the appearance similar to that of the user outdoors during indoor activities. The white light source can be arranged on the substrate, and then a lamp strip capable of emitting similar sunlight is formed. The white light source and the light bar can be applied to the lamp.
Description
Technical Field
The invention relates to the technical field of light-emitting devices, in particular to a white light source capable of emitting light with a spectrum similar to that of sunlight, a light bar using an LED lamp bead and a lamp using the LED lamp bead.
Background
With the improvement of the light quality requirement of people, more and more application occasions can put higher requirements on the light color of the light-emitting device. But at present, the market does not have a uniform evaluation standard for the sunlight-like lighting products. In order to enable the spectrum of a part of products called like sunlight to be close to the spectrum of the sunlight as much as possible, high-intensity spectral energy can be output at the wavelength of 440nm-460nm and even exceeds the range of a blue light hazard radiation curve; meanwhile, the optical fiber has obvious deficiency at the wavelength of 460nm-480nm, so that the optical spectrum is discontinuous. These existing products can only have good fitting degree with sunlight within the wavelength range of 500nm-620nm, so that the existing products can not become 'sunlight-like' products in practice.
Disclosure of Invention
The technical scheme provides a white light source, the spectrum of the white light source can be divided into at least three symmetrical spectral peaks through peak decomposition, the spectrum of the white light source is continuous and similar to a solar spectrum, and the harm of blue light is reduced.
The invention is realized by the following technical scheme: a white light source, its color temperature is selected from 2700K-6500K, take its relative spectral power distribution as phi (lambda), when lambda is in the wavelength range of 420nm-660nm, phi (lambda) decompose into three symmetrical spectral peaks at least, the said symmetrical spectral peak is P1, P2, P3 respectively, correspond to the characteristic:
p1 peak wavelength range: 600nm-660nm, and the half-peak width is 90nm-140 nm;
p2 peak wavelength range: 500nm-550nm, and half-peak width of 60nm-110 nm;
p3 peak wavelength range: 420nm-480nm, half-peak width 30nm-80 nm;
the ratio of the peak intensity of P3 to the peak intensity of P1 is 1: (0.5-10), the ratio of the peak intensity of P3 to the peak intensity of P2 is 1: (0.5-5).
The symmetric spectral peaks P1, P2, P3 may be further defined as:
the P1 peak wavelength range is: 610nm-650nm, half-peak width 100nm-130 nm;
the P2 peak wavelength range is: 510nm-540nm, and 70nm-100nm of half-peak width;
the P3 peak wavelength range is: 430nm-470nm and 40nm-70nm of half-peak width.
Further, the white light source is formed by exciting fluorescent powder to emit light by a purple light chip, and the fluorescent powder consists of blue powder (the emission main peak is 430nm-470nm, and the half-peak width is 20nm-60nm), double-peak blue-green powder (one of the emission main peak is 430nm-460nm, and the half-peak width is 20nm-60nm, and the other emission main peak is 480nm-580nm, and the half-peak width is 60nm-120nm) and red powder (the emission main peak is 600nm-700nm, and the half-peak width is 80nm-120 nm). Wherein the blue powder contains Eu2+Doped chlorophosphates or silicates, in particular Sr5(PO4)3Cl:Eu2+、Ba5(PO4)3Cl:Eu2+、BaAl12O9:Eu2+、RbNa3(Li3SiO4)4:Eu2+Or MgSr3Si2O8:Eu2+(ii) a The red powder contains nitride, sulfide or fluoride, specifically CaAlSiN3:Eu2+、(Ca1-xSrx)AlSiN3:Eu2+Or CaS Eu2+(ii) a The double-peak blue-green powder contains rare earth aluminophosphate or rare earth phosphosilicate.
A light bar comprises at least one white light source and a substrate for mounting and fixing the white light source.
The white light source or the light bar can be arranged in the shell of the lamp and connected with other necessary circuit elements to form the lamp.
The technical scheme provides a white light source which can emit a spectrum with small fluctuation range and excellent continuity in a wavelength range of 420nm-660nm, is closer to sunlight, can provide a good illumination effect for a user, and can obtain the appearance similar to that of the user when the user moves indoors.
Drawings
FIG. 1 is a spectrum of a 2700K color temperature white light source prepared in example 1;
FIG. 2 is a peak plot of the symmetric spectrum of FIG. 1;
FIG. 3 is a spectrum of a white light source of 3000K color temperature obtained in example 2;
FIG. 4 is a peak plot of the symmetric spectrum of FIG. 3;
FIG. 5 is a spectrum of a white light source of 4000K color temperature obtained in example 3;
FIG. 6 is a peak plot of the symmetric spectrum of FIG. 5;
FIG. 7 is a spectrum of a white light source with a color temperature of 5000K prepared in example 4;
FIG. 8 is a peak plot of the symmetric spectrum of FIG. 7;
FIG. 9 is a 6500K color temperature white light source spectrum obtained in example 5;
FIG. 10 is a peak plot of the symmetric spectrum of FIG. 9.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. It will be understood by those skilled in the art that the following examples are illustrative of the present invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
A white light source has a color temperature of 2700K-6500K, a relative spectral power distribution of phi (lambda) is taken, when lambda is in a wavelength range of 420nm-660nm, the phi (lambda) is decomposed into at least three symmetrical spectral peaks, the symmetrical spectral peaks are respectively P1, P2 and P3, and the corresponding characteristics are as follows:
the P1 peak wavelength range is: 600nm-660nm, and the half-peak width is 90nm-140 nm;
the P2 peak wavelength range is: 500nm-550nm, and half-peak width of 60nm-110 nm;
the P3 peak wavelength range is: 420nm-480nm, half-peak width 30nm-80 nm;
taking fig. 2 of example 1 as an example, the abscissa of the coordinate system in the figure represents the wavelength and the ordinate represents the relative intensity. In the invention, the peak intensity corresponding to the peak wavelength of P1, P2 and P3 is represented by the vertical coordinate relative intensity, the peak intensity of P3 is set as reference intensity 1, and the ratio relation between the peak intensity of P3 and the peak intensity of P1 is 1: (0.5-10), the ratio of the P3 peak intensity to the P2 peak intensity is 1: (0.5-5).
The symmetric spectral peaks P1, P2, P3 may be further defined as:
the P1 peak wavelength range is: 610nm-650nm, half-peak width 100nm-130 nm;
the P2 peak wavelength range is: 510nm-540nm, and 70nm-100nm of half-peak width;
the P3 peak wavelength range is: 430nm-470nm and 40nm-70nm of half-peak width.
In this embodiment, the Φ (λ) is decomposed into three symmetric spectral peaks by a gaussian function in origin software. Specifically, a spectrogram of a white light device or data corresponding to the spectrogram is introduced into origin software, the spectrogram synthesized by introducing the data or the spectrogram is subjected to multi-peak fitting in the origin software through a gaussian function in combination with peak wavelength ranges (610nm-650nm, 510nm-540nm and 430nm-470nm), three gaussian peaks (symmetric spectral peaks) of P1, P2 and P3 can be separated by performing multi-peak fitting on values in the peak wavelength ranges, for example, maximum peak points are respectively selected in the ranges of 610nm-650nm and 430nm-470nm, any one of 525nm-535nm is selected in the ranges of 510nm-540nm, and three gaussian peaks (symmetric spectral peaks) conforming to the characteristics of P1, P2 and P3 can be obtained through multi-peak fitting.
Further, the white light source is formed by exciting fluorescent powder to emit light by a chip of 380nm-430nm, and the fluorescent powder is composed of blue powder (the main emission peak is 430nm-470nm, and the half-peak width is 20nm-60nm), double-peak blue-green powder (one of which has the main emission peak of 430nm-460nm and the half-peak width is 20nm-60nm, and the other has the main emission peak of 480nm-580nm and the half-peak width is 60nm-120nm) and red powder (the main emission peak is 600nm-700nm and the half-peak width is 80nm-120 nm). Wherein the blue powder contains Eu2+Doped chlorophosphates or silicates, in particular Sr5(PO4)3Cl:Eu2+、Ba5(PO4)3Cl:Eu2+、BaAl12O9:Eu2+、RbNa3(Li3SiO4)4:Eu2+Or MgSr3Si2O8:Eu2+(ii) a The red powder contains nitride, sulfide or fluoride, specifically CaAlSiN3:Eu2+、(Ca1- xSrx)AlSiN3:Eu2+Or CaS Eu2+. The double-peak blue-green powder is prepared and provided by fluorescent powder manufacturers according to the required emission peak range and half-peak width data.
A light bar comprises at least one white light source and a substrate for mounting and fixing the white light source.
The white light source or the light bar can be arranged in the shell of the lamp and connected with other necessary circuit elements to form the lamp.
Examples 1 to 5
The white light source is formed by exciting fluorescent powder to emit light by a chip with an emission main peak of 380nm-430nm, wherein the fluorescent powder is blue powder with an emission main peak of 430nm-470nm and a half-peak width of 20nm-60nm, double-peak blue-green powder with one emission main peak of 430nm-460nm and a half-peak width of 20nm-60nm and another emission main peak of 480nm-580nm and a half-peak width of 60nm-120nm, and red powder with an emission main peak of 600nm-700nm and a half-peak width of 80nm-120nm, and the specific formula is shown in Table 1:
TABLE 1
| Fluorescent powder | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Blue powder | 20％ | 26％ | 34％ | 42％ | 55％ |
| Double peak blue green powder | 75％ | 70％ | 63％ | 55.5％ | 44.5％ |
| |
5％ | 4％ | 3％ | 2.5％ | 1.5％ |
A white light source having a color temperature of 2700K, 3000K, 4000K, 5000K, and 6500K, respectively, were prepared according to the formulation of example 1, example 3, example 4, and example 5, respectively. The spectra and the symmetric spectral peak profiles (see fig. 2, 4, 6, 8, 10) of the examples (see fig. 1, 3, 5, 7, 9) were measured separately, and the symmetric spectral peak parameters of the examples are shown in table 2:
TABLE 2
The spectrum of the white light source prepared in example 1 is shown in fig. 1, and the spectral power distributions in the wavelength range of 430nm to 660nm are relatively connected, and no obvious defect occurs, so that the illumination effect is good. The spectrum of FIG. 1 can be decomposed into 3 symmetrical peaks by multi-peak fitting by selecting maximum peak points within 610nm-650nm and 430nm-470nm, respectively, and selecting any one of 525nm-535nm within 510nm-540nm through the Gaussian function multi-peak fitting function of origin software, and the peak wavelength ranges of the 3 symmetrical peaks are within (610nm-650nm), (510nm-540nm) and (430nm-470nm), respectively. Specifically, as shown in FIG. 2, the peak wavelength 637nm and the half-width 108nm of P1; the peak wavelength of P2 is 535nm, and the half-peak width is 75 nm; the peak wavelength of P3 is 450nm, and the half-width is 74 nm. Based on the peak wavelength of P3, the peak wavelength relation of each symmetrical peak is 8.6: 3.4: 1.
the spectrum of the white light source prepared in example 2 is shown in fig. 3, and the spectral power distributions in the wavelength range of 430nm to 660nm are relatively connected, and no obvious defect occurs, so that the illumination effect is good. The spectrum of FIG. 3 was decomposed into 3 symmetrical spectral peaks, and the result is shown in FIG. 4, with a peak wavelength of P1 of 635nm and a half-width of 112 nm; the peak wavelength of P2 is 525nm, and the half-peak width is 92 nm; the peak wavelength of P3 is 442nm, and the half-width is 52 nm. Based on the peak wavelength of P3, the peak wavelength relation of each symmetrical spectrum peak is 5.3: 2.6: 1.
the spectrum of the white light source prepared in example 3 is shown in fig. 5, and the spectral power distributions in the wavelength range of 430nm to 660nm are relatively connected, and no obvious defect occurs, so that the illumination effect is good. The spectrum of FIG. 5 was decomposed into 3 symmetrical spectral peaks, with the result shown in FIG. 6, P1 peak wavelength 630nm and half-width 122 nm; the peak wavelength of P2 is 532nm, and the half-peak width is 77 nm; the peak wavelength of P3 is 453nm, and the half-width is 61 nm. Based on the peak wavelength of P3, the peak wavelength relation of each symmetrical spectrum peak is 2.0: 1.2: 1.
the spectrum of the white light source prepared in example 4 is shown in fig. 7, and the spectral power distributions in the wavelength range of 430nm to 650nm are relatively connected, and no obvious defect occurs, so that the illumination effect is good. The spectrum of FIG. 7 was decomposed into 3 symmetrical spectral peaks, with the result shown in FIG. 8, P1 peak wavelength 629nm, half-width 118 nm; the peak wavelength of P2 is 521nm, and the half-peak width is 94 nm; the peak wavelength of P3 is 458nm, and the half-width is 74 nm. Based on the peak wavelength of P3, the peak wavelength relation of each symmetrical spectrum peak is 1.3: 1.1: 1.
the spectrum of the white light source obtained in example 5 is shown in FIG. 9, and although a significant valley appears in the wavelength range of 475nm to 520nm, this is because the color temperature of the white light source is 6500K, and the whole is biased toward a cool tone. The spectral power distribution in the wavelength range of 520nm-660nm is relatively connected, and obvious deficiency does not occur, so the illumination effect is better. The spectrum of FIG. 9 was decomposed into 3 symmetrical spectral peaks, and the result is shown in FIG. 10, with a peak wavelength of 618nm for P1 and a half-width of 135 nm; the peak wavelength of P2 is 516nm, and the half-peak width is 103 nm; the peak wavelength of P3 is 449nm, and the half-width is 40 nm. The peak wavelength relation of each symmetrical spectrum peak is 0.8 in sequence by taking the peak wavelength of P3 as a reference: 0.9: 1.
Claims (7)
1. a white light source is characterized in that the relative spectral power distribution of the white light source is phi (lambda), when lambda is in the wavelength range of 420nm-660nm, the phi (lambda) is decomposed into at least three symmetrical spectral peaks, the symmetrical spectral peaks are P1, P2 and P3 respectively, and the corresponding characteristics are as follows:
p1 peak wavelength range: 600nm-660nm, and the half-peak width is 90nm-140 nm;
p2 peak wavelength range: 500nm-550nm, and half-peak width of 60nm-110 nm;
p3 peak wavelength range: 420nm-480nm, half-peak width 30nm-80 nm;
the ratio of the peak intensity of P3 to the peak intensity of P1 is 1: (0.5-10),
the ratio of the peak intensity of P3 to the peak intensity of P2 is 1: (0.5-5);
the color temperature of the white light source is selected from 2700K to 6500K;
the white light source is formed by exciting fluorescent powder to emit light by a chip with an emission main peak of 380nm-430nm, wherein the fluorescent powder is composed of blue powder with an emission main peak of 430nm-470nm and a half-peak width of 20nm-60nm, double-peak blue-green powder with one emission main peak of 430nm-460nm and a half-peak width of 20nm-60nm, double-peak blue-green powder with the other emission main peak of 480nm-580nm and a half-peak width of 60nm-120nm, and red powder with an emission main peak of 600nm-700nm and a half-peak width of 80nm-120 nm.
2. The white light source of claim 1 characterized in that the symmetric spectral peaks are P1, P2, P3, respectively, with the corresponding features being:
p1 peak wavelength range: 610nm-650nm, half-peak width 100nm-130 nm;
p2 peak wavelength range: 510nm-540nm, and 70nm-100nm of half-peak width;
p3 peak wavelength range: 430nm-470nm and 40nm-70nm of half-peak width.
3. The white light source of claim 1, wherein the blue powder contains Eu2+Doped chlorophosphates or silicates; the double-peak blue-green powder contains rare earth aluminophosphate or rare earth phosphosilicate; what is needed isThe red powder is nitride, sulfide or fluoride.
4. The white light source of claim 3, characterized in that the blue powder is Sr5(PO4)3Cl:Eu2+、Ba5(PO4)3Cl:Eu2+、BaAl12O9:Eu2+、RbNa3(Li3SiO4)4:Eu2+Or MgSr3Si2O8:Eu2+。
5. The white light source of claim 3, wherein the red powder is CaAlSiN3:Eu2+、(Ca1- xSrx)AlSiN3:Eu2+Or CaS Eu2+。
6. The utility model provides a lamp strip, includes the base plate, its characterized in that: at least one white light source as claimed in claim 1 is provided on the substrate.
7. A light fixture comprising a housing, characterized in that: a white light source as claimed in claim 1 or a light bar as claimed in claim 6 is mounted within the housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910356861.6A CN110145724B (en) | 2019-04-29 | 2019-04-29 | White light source, lamp strip and lamps and lanterns |
| PCT/CN2019/124922 WO2020220690A1 (en) | 2019-04-29 | 2019-12-12 | White light source, light bar, and lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910356861.6A CN110145724B (en) | 2019-04-29 | 2019-04-29 | White light source, lamp strip and lamps and lanterns |
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| CN110145724B true CN110145724B (en) | 2021-02-02 |
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| CN110145724B (en) * | 2019-04-29 | 2021-02-02 | 佛山市国星光电股份有限公司 | White light source, lamp strip and lamps and lanterns |
| CN113241340B (en) * | 2021-05-08 | 2022-09-02 | 上海煜珑电子科技有限公司 | Optical device and method for manufacturing the same |
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|---|---|---|---|---|
| CN1478855A (en) * | 2003-08-05 | 2004-03-03 | 北京大学 | Violet light excitated bicomponent three basic colour fluorescent powder and its preparation method |
| CN1480511A (en) * | 2003-08-05 | 2004-03-10 | 北京大学 | Three components of white luminescent powder exeitated by visual purple and its preparing method |
| CN101216150A (en) * | 2007-01-02 | 2008-07-09 | 三星电机株式会社 | White light emitting device and light source module for liquid crystal display backlight using the same |
| CN106960899A (en) * | 2017-03-24 | 2017-07-18 | 北京宇极芯光光电技术有限公司 | A kind of white light LEDs light mixing way and the light-emitting device being made |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4104013B2 (en) * | 2005-03-18 | 2008-06-18 | 株式会社フジクラ | LIGHT EMITTING DEVICE AND LIGHTING DEVICE |
| TWI384052B (en) * | 2007-07-25 | 2013-02-01 | Univ Nat Chiao Tung | A novel phosphor and fabrication of the same |
| CN102790163A (en) * | 2012-01-16 | 2012-11-21 | 中山大学 | White light LED based on purple light LED chip and illuminating device of white light LED |
| CN104263359B (en) * | 2014-09-12 | 2016-10-05 | 江门市科恒实业股份有限公司 | A kind of full-spectrum LED fluorescent material and application thereof |
| CN207247110U (en) * | 2017-08-24 | 2018-04-17 | 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 |
| CN110145724B (en) * | 2019-04-29 | 2021-02-02 | 佛山市国星光电股份有限公司 | White light source, lamp strip and lamps and lanterns |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478855A (en) * | 2003-08-05 | 2004-03-03 | 北京大学 | Violet light excitated bicomponent three basic colour fluorescent powder and its preparation method |
| CN1480511A (en) * | 2003-08-05 | 2004-03-10 | 北京大学 | Three components of white luminescent powder exeitated by visual purple and its preparing method |
| CN101216150A (en) * | 2007-01-02 | 2008-07-09 | 三星电机株式会社 | White light emitting device and light source module for liquid crystal display backlight using the same |
| CN106960899A (en) * | 2017-03-24 | 2017-07-18 | 北京宇极芯光光电技术有限公司 | A kind of white light LEDs light mixing way and the light-emitting device being made |
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| WO2020220690A1 (en) | 2020-11-05 |
| CN110145724A (en) | 2019-08-20 |
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