CN103672450B - Light-emitting device - Google Patents
Light-emitting device Download PDFInfo
- Publication number
- CN103672450B CN103672450B CN201210319939.5A CN201210319939A CN103672450B CN 103672450 B CN103672450 B CN 103672450B CN 201210319939 A CN201210319939 A CN 201210319939A CN 103672450 B CN103672450 B CN 103672450B
- Authority
- CN
- China
- Prior art keywords
- light
- temperature
- emitting device
- chromaticity coordinate
- high temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Led Device Packages (AREA)
Abstract
One embodiment of the invention discloses a kind of light-emitting device, and it includes one first light source, and being set can send one first light under one first low temperature and one first high temperature, and with one first hot cold coefficient；One secondary light source, being set can send one second light under this first low temperature and this first high temperature, and with a second hot cold coefficient for being more than this first hot cold coefficient；And an optical element, be set can be excited by this first light with produce one the 3rd light and can reach in the case where being irradiated by this first light one higher than this first high temperature the second high temperature.
Description
Technical field
The present invention is, on a kind of light-emitting device, less illumination dress to be perceived to the variation of its colour temperature especially with regard to a kind of user
Put, for example using multicolour light emitting diode lighting device.
Background technology
Use light emitting diode (Light-Emitting Diode；LED) forming white light has several means.One is using
More than three kinds monochromatic (Monochromatic Color) light sources produce white light, for example, red, the blue and pole of green emitting two
Pipe.Another way is that two kinds of mixing is each other the coloured light of complementary colours (Complementary Color), for example, blue light and Huang
Light.Generally, blue light is produced by iii-nitride light emitting devices, and gold-tinted is then that the fluorescent material by being excited by blue light is produced.Utilize
In general two kinds of white lights of complementary color light source output have hair higher compared to using three kinds of white lights of monochromatic source output
Light efficiency (Luminous Efficiency) but color rendering index (Color Rendering Index；CRI it is) poor.
Color rendering (Color Rendering) is to weigh the finger that photographed object realistic colour is presented compared to daylight for a light source
Mark.Has the light source of high color rendering index compared with the real color of object can be showed.Halogen lamp LED (Halogen Lamp) and incandescent lamp
Bubble (Incandescent Bulb) is that have preferable color rendering person in current artificial light sources, and its color rendering index is up to 100.It is glimmering
The color rendering index of light lamp (Fluorescent Light) is generally between 60 ~ 85.Blue LED collocation yellow fluorescent powder
Produced white light its color rendering index then only up to 70 or so.Blue LED more than two kinds fluorescent material of collocation, for example, yellow
Color and red fluorescence powder, although its color rendering index can be improved to 80 or so, but luminous efficiency reduction about 30% can be made.
The content of the invention
One embodiment of the invention discloses a kind of light-emitting device, and it includes one first light source, and being set can be low in one first
One first light is sent under temperature and one first high temperature, and with one first hot cold coefficient；One secondary light source, be set can in this
One second light is sent under one low temperature and this first high temperature, and with a second hot cold coefficient for being more than this first hot cold coefficient；
And an optical element, being set can be excited to produce one the 3rd light and in the case where being irradiated by this first light by this first light
Second high temperature for being higher than this first high temperature can be reached.
In an alternative embodiment of the invention, this first light, this second light and this 3rd light can be mixed into one
Mixed light, between this first low temperature and this first high temperature, the difference of its chromaticity coordinate is (△ x, △ y), △ y/ △ x to this mixed light
More than -0.2.
In an alternative embodiment of the invention, this first light, this second light and this 3rd light can be mixed into one
Mixed light, this mixed light under this first low temperature have one first chromaticity coordinate, under this first high temperature have one second colourity
Coordinate, this first chromaticity coordinate and this second chromaticity coordinate are respectively positioned at the both sides of blackbody radiance curve.
In an alternative embodiment of the invention, this first light, this second light and this 3rd light can be mixed into one
Mixed light, this mixed light under this first low temperature have one first chromaticity coordinate, under this first high temperature have one second colourity
Coordinate, this first chromaticity coordinate and this second chromaticity coordinate are the homonymies for being located at blackbody radiance curve.
In an alternative embodiment of the invention, this first light, this second light and this 3rd light can be mixed into one
Mixed light, this mixed light under this first low temperature have one first chromaticity coordinate, under this first high temperature have one second colourity
The line of coordinate, this first chromaticity coordinate and this second chromaticity coordinate is to be in substantially parallel relationship to blackbody radiance curve.
In another embodiment of the invention, this first light, this second light and this 3rd light can be mixed into one
Mixed light, this mixed light is one second related in having under this first high temperature in having one first correlated colour temperature under this first low temperature
Colour temperature, this second correlated colour temperature is more than this first correlated colour temperature.
In another embodiment of the invention, the difference of this first high temperature and this second high temperature is between 30 DEG C~40 DEG C.
In yet another embodiment of the present invention, this first light includes blue light, and this second light includes feux rouges.
In yet another embodiment of the present invention, this optical element includes a material for transformation of wave length, and it may be placed at this
On optical element and away from this secondary light source.
In yet another embodiment of the present invention, this optical element includes a frustum.
Brief description of the drawings
Fig. 1 is to illustrate the configuration figure according to the light-emitting device of one embodiment of the invention；
Fig. 2 is illustrated according to the light-emitting device of further embodiment of this invention；
Fig. 3 is to illustrate the comparative example according to the light-emitting device of one embodiment of the invention；And
Fig. 4 is illustrated according to the light-emitting device of yet another embodiment of the invention.
[main element label declaration]
10 first light source 30c phosphor powder layers
The light-emitting device of 20 secondary light source 100
The light-emitting device of 30 optical element 200
The light-emitting device of 30a recesses 300
The light-emitting device of 30b phosphor powder layers 400
30b ' phosphor powder layers
Specific embodiment
Hereinafter collocation schema illustrates embodiments of the invention.
As shown in figure 1, one embodiment of the invention discloses a kind of light-emitting device 100, its comprise at least one first light source 10,
One secondary light source 20 and an optical element 30.Minimum distance between the first light source 10 and optical element 30 is D1, secondary light source 20
With the minimum distance between optical element 30 for D2, D1 and D2 can be with equal or differences.Optical element 30 can for single structure or
Comprising several independent structures.One light source 10 can produce one first light L1, secondary light source 20 can produce one it is different (all
Or part wavelength is different) in the second light L2 of the first light L1.First light L1, the second light L2 or its both can shine
Penetrate optical element 30 (for example, optical element 30 can be covered in the first light source 10, secondary light source 20 or its both on), and
Optical element 30 is set to produce at least one the 3rd light L3 for being different from the first light L1 or the second light L2.If the first light L1
Only mixing with the 3rd light L3 can produce the 4th light L4 (can not also mix, that is, not have the 4th light L4 in schema).
First light L1, the second light L2 and the 3rd light L3 (or the 3rd light L3 and the 4th light L4) can be in a locus
On be mixed into one the 5th light L5.This locus may be located at outside optical element 30 and within light-emitting device 100 or send out
Outside electro-optical device 100.The quantity of light-emitting device 100, the first light source 10, secondary light source 20 and optical element 30 in Fig. 1, size,
Position to illustrate, but can not certainly limit the present invention.
For example, light-emitting device 100 is a light source, such as bulb, fluorescent tube；First light source 10 is a light emitting diode, the first light
Line L1 is blue light (being not limited to monochromatic source, as follows also comprising the light source comprising blue optical band in frequency spectrum)；Secondary light source 20
Another light emitting diode, the second light L2 be feux rouges (be not limited to monochromatic source, also comprising in frequency spectrum comprising red optical band
Light source, as follows)；3rd light L3 is that gold-tinted (is not limited to monochromatic source, also comprising the light comprising yellow optical band in frequency spectrum
Source, as follows)；4th light L4 is higher color temperature white light (for example, correlated colour temperature (Correlated Color
Temperature；CCT) it is more than 4000K)；5th light L5 be compared with low color temperature white light (for example, correlated colour temperature be 4000K with
Under).Can be the fluorescent material for including and being stimulated by blue light and produce gold-tinted, such as Yttrium aluminium garnet (YAG) type in optical element 30
(Yttrium Aluminum Garnet；YAG) fluorescent material, silicates (Silicate-based) fluorescent material, terbium aluminium garnet
Type (Terbium Aluminum Garnet；TAG) fluorescent material, nitrogen oxides (Oxynitride) fluorescent material.Institute in this specification
The fluorescent material enumerated respectively has its operating characteristic, and such as Yttrium aluminium garnet (YAG) type fluorescent powder has preferable under high temperature (e.g., more than 100 DEG C)
Luminous efficiency, nitric oxide fluorescent powder has preferably luminous efficiency under middle low temperature (e.g., less than 100 DEG C).Therefore, light
When device 100 is used for the operating environment of high temperature, Yttrium aluminium garnet (YAG) type fluorescent powder can be selected；If being used in the operation ring of middle low temperature
During border, nitric oxide fluorescent powder can be selected.But above selecting suggestions are not absolute, still visual design requirement adjusts it.
For example, light-emitting device 100 is a light source, such as bulb, fluorescent tube；First light source 10 is a light emitting diode, the first light
Line L1 is blue light；Secondary light source 20 is another light emitting diode, and the second light L2 is feux rouges；Three light L3 are that green glow (is not limited to
Monochromatic source, as follows also comprising the light source comprising green optical band in frequency spectrum)；4th light L4 is dark green light (cyan；It is non-
It is limited to monochromatic source, as follows also comprising the light source comprising blue-green light wave band in frequency spectrum)；5th light L5 is white light.Optics
The fluorescent material that can be stimulated by blue light and produce green glow, such as silicates fluorescent material, Yttrium aluminium garnet (YAG) type can be included in element 30
Fluorescent material, LuAG (Lutetium Aluminum Garnet), beta-SiAlON.Specific chemical composition is exemplified below：(Sr,
Ba)2SiO4:Eu2+、SrGa2S4:Eu2+、Y2SiO5:Tb、CeMgAl11O19:Tb、Zn2SiO4:Mn、LaPo4:Ce,Tb、Y3Al5O12:
Tb、Y2O2S:Tb,Dy、BaMgAl11O17:Eu,Mn、GdMgZnB5O10:Ce,Tb、Gd2O2S:Tb,Dy。
First light source 10 can have one first hot cold coefficient (Hot/Cold Factor), and secondary light source 20 can have
One the second hot cold coefficient for being different from the first hot cold coefficient.This so-called hot cold coefficient (Hot/Cold Factor), or temperature system
Number (Temperature Coefficient；TC), it is to represent luminous flux of the light source in high temperature divided by the luminous flux in low temperature
Ratio.Luminous flux during high temperature is less than luminous flux during low temperature, then hot cold coefficient is less than 1, otherwise is then more than 1.The cold coefficient of heat
Bigger luminous flux or luminous efficiency are smaller because of the amplitude of temperature damping.For example, the hot cold coefficient of a light emitting diode is X, if with
25 DEG C of luminous flux be reference value, then 100 DEG C when luminous flux will only remain reference value (100*X) %, in other words, luminous flux
Fall is (100-X) %.If input power is constant, luminous flux fall is bigger, and the luminous efficiency of light source is also poorer.
In another embodiment, light-emitting device 100 can be in one first temperature T1And a second temperature T2Emit beam, and
Second temperature T2Higher than the first temperature T1(in T1And T2Between can light or do not light), and the first light source 10 has one first heat
Cold coefficient HC1, secondary light source 20 is with one second hot cold coefficient HC2, and HC1>HC2.First light L1 and the second light L2 are in T1
When luminous flux ratio be FR1, in T2Time flux ratio is FR2, because the second light L2 receives the amplitude of heat fade compared with the first light
Line L1 is obvious so that FR1<FR2.In T1When the 5th light L5 (can be simple L1 and L2 mixed light or L1, L2 and L3 mixing
Light.) correlated colour temperature be CT1, the correlated colour temperature of the 5th light L5 is CT when T22, due to the first light L1 and the second light L2
Mixed proportion in T1And T2Difference (FR1≠FR2) so that CT1With CT2Also it is different therewith.Therefore, hot cold coefficient also may shadow
Ring the colour temperature of mixed light.
The operating temperature of light-emitting device 100 often rises as use time increases.What if light-emitting device 100 was sent
Light includes coloured light as produced by the light source of the hot cold coefficient of several differences, then the colour temperature of the emitted light of light-emitting device 100 is just
Can change because of the change of operating temperature.Change or reach expected colour temperature design to relax colour temperature of the mixed light in high/low temperature
It is required that, present application separately proposes following examples.
In one embodiment of the invention, the minimum distance between the first light source 10 and optical element 30 is D1, secondary light source
Minimum distance between 20 and optical element 30 can be with equal or difference for D2, D1 and D2, and D1 and D2 are all not equal to zero.Optics unit
Comprising the material for transformation of wave length 40 that the first light L1 can be converted to the 3rd light L3 in part 30.Material for transformation of wave length 40 be as
Fluorescent material (specific material is such as foregoing), dyestuff, semiconductor.Material for transformation of wave length 40 has specific conversion efficiency, will swash
Luminous (such as the first light L1) is converted into launching light (such as the 3rd light L3) according to certain proportion, and is not converted into swashing for launching light
It is luminous then possibly off material for transformation of wave length 40 or be converted into heat and the temperature of optical element 30 is increased.If wavelength convert material
The temperature of material 40 or optical element 30 makes it away from light source or separates the two also with a transparent heat-insulated material higher than the temperature of light source
The heat for being transferred to light source can be reduced.Once the temperature drop of light source just can slow down the influence to colour temperature because of hot cold coefficient.Instead
It, if temperature of the temperature of optical element 30 less than light source, makes optical element 30 close to light source to absorb the heat of light source, just can be with
The temperature of light source is reduced, influence of the hot cold coefficient to colour temperature can also be slowed down.
Light-emitting device 200 as illustrated in Figure 2, the first light source 10 is a blue LED, and secondary light source 20 is one
Red light emitting diodes, and the first light source 10 hot cold coefficient more than secondary light source 20 hot cold coefficient.Optical element 30 is one
The frustum (frustum) of inverted cone (reversed cone), thereon and with a recess 30a, recess 30a is interior and is provided with
One phosphor powder layer 30b.First light source 10 and secondary light source 20 can be optionally placed on a carrier 50.Carrier 50 be as
Printed circuit board (PCB) (Printed Circuit Board；PCB), ceramic substrate, metal substrate, plastic base, glass, silicon substrate
Deng.Between optical element 30 and carrier 50 in addition to light emitting diode, other materials, such as colloid, Heat Conduction Material, light scattering are still filled
Material etc..In an embodiment, the first light source 10 and secondary light source 20 by coming into operation until light source and optical element at room temperature
30 temperature reaches stable state (Steady State) or intends quasi-stability (Quasi-Steady State).
For example, optical element 30 is frustum as shown in Figure 2, diameter (Dt) is about 17 millimeters, lower diameter thereon
(Db) be about 8 millimeters, height H be about 5 millimeters (that is, the distance of the first light source of phosphor powder layer 30a distances 10 and secondary light source 20
About 5 millimeters).Initially, the first light source 10 and secondary light source 20 are come into operation by 25 DEG C or so and send blue light and feux rouges respectively,
Blue light can excite optical element 30 to produce gold-tinted, also, blue light, feux rouges and gold-tinted can be mixed into a low color temperature white light, and it is related
Colour temperature is about 2500K, CIE (x1, y1)initialChromaticity coordinate is about (0.4733,0.4047).After several minutes, temperature is no longer bright
It is aobvious to rise.Now, the temperature of the first light source 10 and secondary light source 20 is about 70 DEG C~90 DEG C, and the temperature of optical element 30 is about
100 DEG C~130 DEG C, so the temperature of the first light source 10 and secondary light source 20 is all lower than optical element 30 about 30 DEG C~40 DEG C.In
Under this steady temperature, blue light, feux rouges and gold-tinted can blend a high color temperature white light, and its correlated colour temperature is about 3000K, CIE (x1,
y1)stableChromaticity coordinate is about (0.4395,0.4104).That is, by low temperature to high temperature, the correlated colour temperature gap of white light is about
500K, the change of chromaticity coordinate (△ x1, △ y1) is about (- 0.0339,0.0057), and △ y1/ △ x1 are approximately equal to -0.17.Due to
△ x1 are much larger than △ y1 (0≤△ y1/ △ x1≤- 0.2) so that the slope of colourity changes in coordinates relatively delays between low temperature and high temperature,
CIE(x1,y1)initialAnd CIE (x1, y1)stableThe line of chromaticity coordinate can parallel or less parallel blackbody radiance curve.Also
I.e. the chromaticity coordinate line of low temperature and high temperature in the one side of blackbody radiance curve, or can pass through black body radiation song with less slope
Line.In this example, CIE (x1, y1)initialPositioned at black body radiation line lower section, CIE (x1, y1)stablePositioned at black body radiation line top.
Than if not using optical element 30, fluorescent material being directly covered on the first light source 10 and secondary light source 20
(that is, fluorescent material is not away from light source), but other conditions are constant, the CIE (x2, y2) of low color temperature white lightinitialChromaticity coordinate is about
(0.4806,0.43), the CIE (x2, y2) of high color temperature white lightstableChromaticity coordinate is about (0.4531,0.4504), the phase of white light
Though closing color temperature difference away from still about 500K, the change of chromaticity coordinate (△ x2, △ y2) is but about (- 0.0275,0.0204), △ y2/
△ x2 are approximately equal to -0.74.The steeper slope of colourity changes in coordinates between low temperature and high temperature, the mobile line segment of chromaticity coordinate or its prolong
Stretching line can pass through blackbody radiance curve.And because △ y2 are much larger than △ y1 (△ y2/ △ y1=3.58) so that (x2, y2) is towards color
The mobile amplitude of green wavelength (520nm~560nm) is more than (x1, y1) in degree coordinate.Because human eye is more sensitive for green glow,
Therefore, the knots modification of green glow is bigger, and human eye is healed can discover the change of light color or colour temperature.
Further, since by optical element 30 away from light source, will also make light source that temperature, Jin Erti can be reduced away from thermal source
Rise its luminous efficiency.For example, such as design of Fig. 2, by low temperature to high temperature, the luminous efficiency appointment of light-emitting device 200 declines 24%.
But, after such as phosphor powder layer 30b ' is directly covered on the first light source 10 and secondary light source 20, then cover optical element 30, then send out
The luminous efficiency of electro-optical device 300 will reduce by 27%, as shown in Figure 3.
By being, configuration or method using the above embodiment of the present invention can reduce human eye for sensitivity that colour temperature changes
Degree, and the luminous efficiency of light source can be improved.
In another embodiment of the present invention, as shown in figure 4, light-emitting device 400, the first light source 10 is the pole of a blue-light-emitting two
Pipe, secondary light source 20 is a red light emitting diodes.Optical element 30 is the frustum of an inverted cone, thereon and recessed with one
In mouthful 30a, recess 30a and frustum side surface and be provided with a phosphor powder layer 30c.First light source 10 and secondary light source 20 can
To be optionally placed on a carrier 50.Carrier 50 be as printed circuit board (PCB), ceramic substrate, metal substrate, plastic base,
Glass, silicon substrate etc..Between optical element 30 and carrier 50 in addition to light emitting diode, other materials, such as colloid, heat conduction are still filled
Material, light-scattering material etc..Because the top and side of optical element 30 all cover phosphor powder layer 30c, luminous dress can be caused
Put 100 color over and under more uniform.For example, the chromaticity coordinate (△ u ', △ v ') of light-emitting device 400400About
(0.010,0.014), and light-emitting device 200 (Du ', Dv ')200About (0.014,0.023).If additionally, in optical element
30th, phosphor powder layer 30c or the two in add scattering material, such as TiO2, also contribute to form the more uniform light field of color.
Though more than each schema and explanation only corresponding specific embodiment respectively, however, illustrated in each embodiment or exposure
Element, implementation method, design criteria and know-why except in addition to showing mutually conflict, contradiction each other or being difficult to common implementing,
We when can according to needed for it is any with reference to, exchange, collocation, coordinate or merge.
Although the present invention is it is stated that as above, scope, implementation order or the material for using that so it is not intended to limiting the invention
Material and manufacturing method thereof.For various modifications and change that the present invention is made, spirit and scope of the invention are neither taken off.
Claims (10)
1. a kind of light-emitting device, comprising：
One first light source, being set can send one first light under one first low temperature and one first high temperature, and with one first
The cold coefficient of heat；
One secondary light source, being set can send one second light under first low temperature and first high temperature, and be more than with one
Second hot cold coefficient of the first hot cold coefficient；And
One optical element, being set can be excited to produce one the 3rd light and irradiated by first light by first light
Second high temperature for being higher than first high temperature can be reached down.
2. light-emitting device according to claim 1, wherein first light, second light and the 3rd light can mix
Into a mixed light, between first low temperature and first high temperature, the difference of its chromaticity coordinate is (△ x, △ y), △ to the mixed light
Y/ △ x are greater than -0.2.
3. light-emitting device according to claim 1, wherein first light, second light and the 3rd light can mix
Into a mixed light, the mixed light under first low temperature have one first chromaticity coordinate, under first high temperature have one second
Chromaticity coordinate, first chromaticity coordinate and second chromaticity coordinate are respectively positioned at the both sides of blackbody radiance curve.
4. light-emitting device according to claim 1, wherein first light, second light and the 3rd light can mix
Into a mixed light, the mixed light under first low temperature have one first chromaticity coordinate, under first high temperature have one second
Chromaticity coordinate, first chromaticity coordinate and second chromaticity coordinate are the homonymies for being located at blackbody radiance curve.
5. light-emitting device according to claim 1, wherein first light, second light and the 3rd light can mix
Into a mixed light, the mixed light under first low temperature have one first chromaticity coordinate, under first high temperature have one second
The line of chromaticity coordinate, first chromaticity coordinate and second chromaticity coordinate is to be in substantially parallel relationship to blackbody radiance curve.
6. light-emitting device according to claim 1, wherein first light, second light and the 3rd light can mix
Into a mixed light, the mixed light under first low temperature have one first correlated colour temperature, under first high temperature have one second
Correlated colour temperature, second correlated colour temperature is more than first correlated colour temperature.
7. light-emitting device according to claim 1, the difference of wherein first high temperature and second high temperature be between 30 DEG C~
40℃。
8. light-emitting device according to claim 1, wherein first light include blue light, and second light includes feux rouges.
9. light-emitting device according to claim 1, the wherein optical element include a material for transformation of wave length, and it can be set
On the optical element and away from the secondary light source.
10. light-emitting device according to claim 1, the wherein optical element include a frustum.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442177.0A CN107270139B (en) | 2012-08-31 | 2012-08-31 | Light emitting device and method for operating a light emitting device |
| CN201210319939.5A CN103672450B (en) | 2012-08-31 | 2012-08-31 | Light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319939.5A CN103672450B (en) | 2012-08-31 | 2012-08-31 | Light-emitting device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442177.0A Division CN107270139B (en) | 2012-08-31 | 2012-08-31 | Light emitting device and method for operating a light emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103672450A CN103672450A (en) | 2014-03-26 |
| CN103672450B true CN103672450B (en) | 2017-07-04 |
Family
ID=50310834
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442177.0A Active CN107270139B (en) | 2012-08-31 | 2012-08-31 | Light emitting device and method for operating a light emitting device |
| CN201210319939.5A Active CN103672450B (en) | 2012-08-31 | 2012-08-31 | Light-emitting device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442177.0A Active CN107270139B (en) | 2012-08-31 | 2012-08-31 | Light emitting device and method for operating a light emitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107270139B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202017100682U1 (en) * | 2016-02-10 | 2017-02-21 | Ford Global Technologies, Llc | vehicle emblem |
| CN110553166A (en) * | 2018-05-30 | 2019-12-10 | 周卓煇 | Human-friendly light source and use thereof |
| CN111198333B (en) * | 2019-12-31 | 2022-06-03 | 深圳市裕富照明有限公司 | Method and device for evaluating luminous efficacy of lighting equipment, equipment and storage medium thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069057Y (en) * | 2007-02-16 | 2008-06-04 | 厦门通士达照明有限公司 | High light efficiency high coloration LED lamp |
| CN101655218A (en) * | 2008-08-22 | 2010-02-24 | 廖丰标 | High-efficiency three-wavelength light source module |
| CN202392511U (en) * | 2011-12-05 | 2012-08-22 | 深圳市启明和丰照明科技有限公司 | LED (light-emitting diode) lamp capable of freely adjusting colour temperature |
| CN102644904A (en) * | 2011-02-21 | 2012-08-22 | 柏友照明科技股份有限公司 | Light-mixing-type polycrystalline packaging structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017814B (en) * | 2007-01-09 | 2012-02-29 | 吕大明 | A separating fluorescence film white LED lamp |
| CN101487581A (en) * | 2008-01-17 | 2009-07-22 | 富士迈半导体精密工业（上海）有限公司 | LED light source module |
| CN102148321A (en) * | 2011-01-24 | 2011-08-10 | 佛山电器照明股份有限公司 | LED (Light Emitting Diode) white light fluorescent cap and manufacturing method thereof |
| CN102130282A (en) * | 2011-02-12 | 2011-07-20 | 西安神光安瑞光电科技有限公司 | Packaging structure and packaging method for white LED (light-emitting diode) |
-
2012
- 2012-08-31 CN CN201710442177.0A patent/CN107270139B/en active Active
- 2012-08-31 CN CN201210319939.5A patent/CN103672450B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069057Y (en) * | 2007-02-16 | 2008-06-04 | 厦门通士达照明有限公司 | High light efficiency high coloration LED lamp |
| CN101655218A (en) * | 2008-08-22 | 2010-02-24 | 廖丰标 | High-efficiency three-wavelength light source module |
| CN102644904A (en) * | 2011-02-21 | 2012-08-22 | 柏友照明科技股份有限公司 | Light-mixing-type polycrystalline packaging structure |
| CN202392511U (en) * | 2011-12-05 | 2012-08-22 | 深圳市启明和丰照明科技有限公司 | LED (light-emitting diode) lamp capable of freely adjusting colour temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103672450A (en) | 2014-03-26 |
| CN107270139B (en) | 2020-11-06 |
| CN107270139A (en) | 2017-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7140804B2 (en) | Light-emitting device and LED light bulb | |
| US8651723B2 (en) | LED light source with a luminescent layer | |
| RU2623682C2 (en) | White light emmission module | |
| JP6275829B2 (en) | Light emitting device | |
| WO2016023314A1 (en) | Light emitting diode device, light source assembly and light source module | |
| JP5732059B2 (en) | LED bulb | |
| CN102959312B (en) | LED bulb | |
| CN105309046A (en) | Lighting device comprising at least two sets of leds | |
| TWI695875B (en) | Blue emitting phosphor converted led with blue pigment | |
| CN107461717A (en) | A kind of light source module group and the lighting device including the light source module group | |
| CN109370593A (en) | Phosphor mixture and light-emitting device thereof | |
| CN103672450B (en) | Light-emitting device | |
| KR102503519B1 (en) | Oxyfluoride phosphor compositions and lighting apparatus thereof | |
| CN105075397B (en) | Dimmable light-emitting device | |
| TWI529976B (en) | Light-emitting device | |
| TWI578578B (en) | Light-emitting device | |
| WO2024141360A1 (en) | Lighting system with enhanced color gamut | |
| Awade | Borate Phosphors for Solid-State Lighting | |
| WO2024126148A1 (en) | Cyan enhanced sources with 2° matched leds and correct 10° color points | |
| WO2024110377A1 (en) | White led with at least p1f3 light quality | |
| TW201215800A (en) | White light illumination device and method for generating white light | |
| TW200910657A (en) | A method of making white light source with high color rendering index and high color gamut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |