CN109027779A - A kind of high green light LED illuminating part and lighting apparatus - Google Patents
A kind of high green light LED illuminating part and lighting apparatus Download PDFInfo
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- CN109027779A CN109027779A CN201810681577.1A CN201810681577A CN109027779A CN 109027779 A CN109027779 A CN 109027779A CN 201810681577 A CN201810681577 A CN 201810681577A CN 109027779 A CN109027779 A CN 109027779A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
- F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
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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
- F21V7/00—Reflectors for light sources
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- 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]
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Abstract
The present invention provides a kind of high green light LED illuminating part, including carrier, and carrier is equipped with electric connection structure, at least one set of light emitting structure and reflector, and light emitting structure is set in reflector and is connected with electric connection structure；Light emitting structure includes white-light emitting body and red emitting luminophores, and the white light is mixed with the feux rouges obtains near-nature forest light, and the relative spectral power of the cyan light in near-nature forest light is greater than 0.30；The relative spectral power of blue light is less than 0.75.In the light that this light source issues, green light relative spectral is elevated, so that colour rendering index is promoted, the aobvious finger of especially R12 is promoted, and improves colour rendering；Blue light relative spectral power is reduced, is conducive to protect eyesight, especially child and children's vision, also helps reduction due to the excessively high caused inferior health problem of blue light.Simple for structure, compact is flexible in application.
Description
Technical field
The present invention relates to LED technology field, in particular to a kind of high green light LED illuminating part and the illumination including the light source are set
It is standby.
Background technique
LED light source is common device in lighting area, and existing common LED light source, one is use blue chip
In conjunction with the white light source of fluorescent powder, spectrum as shown in figure 12, the light source of this structure, blue light ratio is excessively high, and green light ratio is very low,
It is larger with the spectrum difference of natural light.Another kind is the white light source using RGB chip portfolio, as shown in fig. 13 that spectrum, this
Kind white light is there are three peak values of red, green, blue wave band, and blue light ratio is higher, and green light ratio is lower, and other parts ratio mistake
It is low, it is bigger with the spectrum difference of natural light.
The common of existing white light source has different degrees of missing, photochromic unnatural, vision usually relative to natural light
Experience bad.And blue light ingredient is higher, there is a great harm for human eye, green light ingredient is too low, colour rendering index there are apparent defect,
The aobvious finger of especially R12 is too low.This is obvious to the inpairment of vision of minority student and children, will lead to children's anomalous trichromatism, close
Depending on the problems such as, and be chronically in the lighting environment of high blue light, will affect people's health.With the development of lighting engineering,
People require constantly to be promoted to overall performances such as quality, the comfort levels of light, and optimal illumination light is natural light, natural lighting
The always vision of illuminating industry.The existing light source close to natural light, green light ratio is too low always, and in order to reduce blue light
And when inhibiting its ratio, green light is also easy to be suppressed.
Accordingly, it is desirable to provide the light source close to natural light of a kind of low blue light and high green light.
Summary of the invention
The purpose of the present invention is to provide a kind of high green light LED illuminating parts, it is intended to solve Conventional LED light sources green light it is too low and
The excessively high technical problem of blue light.
The invention is realized in this way a kind of high green light LED illuminating part, including carrier, the carrier are equipped with the binding that is electrically connected
Structure, at least one set of light emitting structure and reflector, the light emitting structure be set in the reflector and with the electric connection structure
It is connected；Light emitting structure described in every group includes the white-light emitting body for emitting white light and the red light-emitting for emitting feux rouges
Body, for compensating the red light portion that the white light is lacked relative to natural light, the white light mixes the feux rouges with the feux rouges
Near-nature forest light is obtained, the relative spectral power of the cyan light in the near-nature forest light is greater than 0.30；Indigo plant in the near-nature forest light
The relative spectral power of coloured light is less than 0.75.
In one embodiment, when the colour temperature of the near-nature forest light is 2700K-3000K, the green light of 475-492nm wave band
Relative spectral power is greater than 0.30；
When the colour temperature of the near-nature forest light is 4000K-4200K, the green light relative spectral power of 475-492nm wave band is greater than
0.40；
When the colour temperature of the near-nature forest light is 5500K-6000K, the green light relative spectral power of 475-492nm wave band is greater than
0.50。
In one embodiment, the reference color temperature of the near-nature forest light includes 2700K-6000K, and color tolerance is less than 5, colour developing
Colour rendering index of the index Ra greater than 95, R12 is greater than 80.
In one embodiment, the white-light emitting body includes blue chip and is set to the glimmering of blue chip periphery
Light film, the fluorescent film include colloid and the fluorescent powder that is mixed in inside the colloid, the fluorescent powder include rouge and powder, green powder and
Yellowish green powder；
The chromaticity coordinates of the rouge and powder is X:0.660~0.716, Y:0.340~0.286；
The chromaticity coordinates of the green powder is X:0.064~0.081, Y:0.488~0.507；
The chromaticity coordinates of the yellowish green powder is X:0.367~0.424, Y:0.571~0.545；
The weight ratio of the rouge and powder, green powder and yellowish green powder are as follows:
Rouge and powder: green powder: yellowish green powder=(0.010~0.035): (0.018~0.068): (0.071~0.253)；
The concentration of the fluorescent film is 17%~43%.
In one embodiment, the white-light emitting body includes blue chip and the phosphorus for being set to the blue chip periphery
Light film.
In one embodiment, the white light that the white-light emitting body issues has following optical parameter:
When the colour temperature of the white light is 2700K-3000K, the relative spectral power of 480-500nm wave band is greater than 0.30；
The relative spectral power of 500-640nm wave band is greater than 0.70；
When the colour temperature of the white light is 4000K-4200K, the relative spectral power of 480-500nm wave band is greater than 0.45；
The relative spectral power of 500-640nm wave band is greater than 0.65；
When the colour temperature of the white light is 5500K-6000K, the relative spectral power of 480-500nm wave band is greater than 0.4；500-
The relative spectral power of 640nm wave band is greater than 0.60.
In one embodiment, the relative spectral power of feux rouges is greater than 0.60 in the near-nature forest light；The near-nature forest light
The relative spectral power of middle sodium yellow is greater than 0.50；The relative spectral power of the near-nature forest light Green light is greater than 0.35.
In one embodiment, the carrier is non-metal carrier, and the wavelength of the blue chip is 457.5-480nm,
The wavelength of the red light chips is 640-700nm, and the blue chip and red light chips upside-down mounting are set to the carrier surface.
In one embodiment, the white-light emitting body and red emitting luminophores are by identical driving current unified driving, or
Person is respectively driven by different driving electric current.
Another object of the present invention is to provide a kind of lighting apparatus, including high green light LED hair described in any of the above embodiments
Light part.
Light source provided in an embodiment of the present invention at least has the effect that
First, this light source issue light in, green light relative spectral is elevated, so that colour rendering index is promoted, especially
The aobvious finger of R12 is promoted, and then improves the colour rendering of near-nature forest radiant, can more really show object or environment
Realistic colour；
Second, it while improving green light ratio, can reduce blue light relative spectral power, shone compared to conventional white light
Bright, visual experience is more comfortable, is conducive to protect eyesight, especially child and children's vision, also helps reduction due to blue light
Inferior health problem caused by excessively high promotes Health Category while improving aobvious refer to.
Third, the present invention are to obtain near-nature forest light in the form of white-light emitting body and red emitting luminophores combination, are mentioned simultaneously
It rising green light and reduces blue light, i.e., the light that the light source issues can cover the wave band of natural light and each wave band is closer to natural light, because
This, the present invention is that colour rendering index and Health Category are promoted while providing more natural illuminating effect.
4th, the present invention is that near-nature forest light, structure letter are obtained in the form of white-light emitting body and red emitting luminophores combination
Clean, variable controllability is good in debugging process, is achieved the debugging of near-nature forest light, and solving multiple illuminator combinations can not adjust
The problem of near-nature forest light out, and near-nature forest light is obtained by supplement red emitting luminophores, it solves through blue chip and fluorescence
The mode of cementing conjunction can not obtain the problem of complete near-nature forest light.
5th, white-light emitting body and red emitting luminophores can be using the miniature illuminators for meeting performance requirement, and light source is whole
For a miniature lamp bead, can multiple lamp beads be arranged on the electric connection structure plate of various lamps and lanterns with arbitrary form, since its is small in size
Ingeniously, it may be disposed at any position of electric connection structure plate, flexible in application, lamps and lanterns Integral luminous is uniform, good illumination effect.
Detailed description of the invention
Fig. 1 is the schematic perspective view of high green light LED illuminating part provided in an embodiment of the present invention；
Fig. 2 is the top view of high green light LED illuminating part provided in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of high green light LED illuminating part provided in an embodiment of the present invention；
Fig. 4 is the bottom view of high green light LED illuminating part provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the white-light emitting body of high green light LED illuminating part provided in an embodiment of the present invention；
Fig. 6 is the spectral schematic of near-nature forest light provided in an embodiment of the present invention；
Fig. 7 is the spectrum test report figure of near-nature forest light shown in Fig. 6；
Fig. 8 is the spectrum comparison diagram of high green light LED illuminating part and natural light provided in an embodiment of the present invention；
Fig. 9 is the spectrum comparison diagram of existing near-nature forest radiant and natural light；
Figure 10 is the spectrogram of white-light emitting body provided in an embodiment of the present invention；
Figure 11 is the white-light spectrum figure provided in an embodiment of the present invention using 452.5-455nm blue chip；
Figure 12 is the first spectrogram of white light source in the prior art；
Figure 13 is second of spectrogram of white light source in the prior art；
Figure 14 is a kind of spectrogram of near-nature forest radiant in the prior art.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or
It connects and is located on another component.When a component referred to as " is connected to " another component, it be can be directly or indirectly
It is connected on another component.Term " on ", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top",
The orientation or position of the instructions such as "bottom", "inner", "outside" are orientation based on the figure or position, are merely for convenience of describing,
It should not be understood as the limitation to the technical program.Term " first ", " second " are used merely to facilitate description purpose, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating technical characteristic.The meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In order to illustrate technical solutions according to the invention, it is described in detail below in conjunction with specific accompanying drawings and embodiments.
The explanation of technical term:
1. relative spectral power:
A kind of spectrum that light source is emitted is frequently not single wavelength, but by the mixed radiation of many different wave lengths institute
Composition.The spectral radiance of light source is known as the spectral power distribution of light source by wavelength order and the distribution of each Wavelength strength.
Parameter for characterizing spectral power size is divided into absolute spectral power and relative spectral power.And then absolute spectrum
Power distribution curve: refer to curve made by the various wavelength light energy absolute values with spectral radiance；
Relative spectral power distributions curve: referring to that the energy by the various wavelength of radiation of light source spectrum is compared to each other, and makees
The spectral power distribution for changing radiant power only within the limits prescribed.The maximum phase of radiant power
It is 1 to spectral power, the relative spectral power of other wavelength is respectively less than 1.
2. color ratio:
Any white light can be mixed to get by Red Green Blue with corresponding proportion, in order to indicate that R, G, B three primary colors are each
Relative scale in comfortable white light total amount introduces chromaticity coordinate r, g, b, wherein r=R/ (R+G+B), g=G/ (R+G+B), b=
B/ (R+G+B), r+g+b=1, r, g, b are respectively red light color ratio, green light color ratio, blue light color ratio.
The embodiment of the present invention provides a kind of high green light LED illuminating part (hereinafter referred to as " this light referring to FIG. 1 to FIG. 4,
Source "), it can be used for various lighting devices.High green light LED illuminating part includes carrier 10, and carrier 10 is equipped with electric connection structure 30, at least
One group of light emitting structure 20 and reflector 11, light emitting structure 20 are set in reflector 11 and are connected with electric connection structure 30；Every group
Light emitting structure 20 includes the white-light emitting body 21 for emitting white light and the red emitting luminophores 22 for emitting feux rouges, and feux rouges is used
In the red light portion that compensation white light is lacked relative to natural light, white light is mixed with the feux rouges obtains near-nature forest light, near-nature forest light
In cyan light relative spectral power be greater than 0.30；The relative spectral power of blue light in near-nature forest light is less than 0.75.
In field of LED illumination, the lighting source for studying close to natural light is one of development trend of this field and numerous
Also there are some illumination productions being dedicated to close to natural light in the prior art in the direction that researcher and unit have been working hard
Product, the light that commonly referred to as this product generates is " near-nature forest light ", and near-nature forest light refers to spectral shape (the relative spectral function of corresponding wave band
Rate) it is close with natural light, at least partly optical parameter and natural light are close, which is not limited to certain numerical value.This reality
The high green light LED illuminating part applied in example equally can be realized the illuminating effect close with natural light, and be able to ascend green light
Ratio reduces blue light ratio.
Specifically, as described above, the basic support construction of this light source is carrier 10, light emitting structure 20 is arranged in carrier 10
On, the quantity of light emitting structure 20 is one group, two or more groups, and the structure and function of each light emitting structure 20 is all consistent.This
Embodiment is preferably one group.Each group of light emitting structure 20 all includes white-light emitting body 21 and red emitting luminophores 22, that is, this light source hair
Near-nature forest light is realized by the mixing of white light and feux rouges out.Wherein, feux rouges is lacked for compensating white light relative to natural spectrum
The part of mistake, and then form near-nature forest light.
With reference to Fig. 5, the white-light emitting body 21 include blue chip 211 and cover blue chip 211 fluorescent film 212 or
Phosphor film, red emitting luminophores 22 include at least red light chips, are issued blue chip 211 by fluorescent film 212 or phosphor film
Monochromatic light carry out wavelength convert, generate other coloured light, form white light after a variety of Colored light mixings, the white light and feux rouges mixing after shape
At near-nature forest light.Every group of light emitting structure 20 can issue near-nature forest light, therefore contain multi-group light-emitting structure 20 in this light source
In the case where, it can equally issue near-nature forest light.
The wave-length coverage of various coloured light is as follows in visible light: red light (622~700nm), orange-colored light (597~622nm),
Sodium yellow (577~597nm), green light (492~577nm), cyan light (475~492nm), blue light (435~475nm),
Purple light (380~435nm).
Such as Fig. 6 to Fig. 8, the spectrogram and spectrum test data of the Gaoqing radiant of the present embodiment are respectively illustrated, is passed through
The figure can be seen that the spectrum close to the spectrum of natural light, and the ratio of blue light is lowered, and the ratio of green light is enhanced.With reference to figure
9, existing near-nature forest light spectrum and natural light spectrum still gap are larger, blue light ingredient highest in whole wave bands, while
The appearance of green light part is clearly disadvantageous, in addition also occurs in red light portion clearly disadvantageous.
Light source provided in an embodiment of the present invention at least has the effect that
First, this light source issue light in, green light relative spectral is elevated, so that colour rendering index is promoted, especially
The aobvious finger of R12 is promoted, and then improves the colour rendering of near-nature forest radiant, can more really show object or environment
Realistic colour；
Second, it while improving green light ratio, can reduce blue light relative spectral power, shone compared to conventional white light
Bright, visual experience is more comfortable, is conducive to protect eyesight, especially child and children's vision, also helps reduction due to blue light
Inferior health problem caused by excessively high promotes Health Category while improving aobvious refer to.
Third, the present invention are to obtain near-nature forest light in the form of white-light emitting body and red emitting luminophores combination, are mentioned simultaneously
It rising green light and reduces blue light, i.e., the light that the light source issues can cover the wave band of natural light and each wave band is closer to natural light, because
This, the present invention is that colour rendering index and Health Category are promoted while providing more natural illuminating effect.
4th, the present invention is that near-nature forest light, structure letter are obtained in the form of white-light emitting body and red emitting luminophores combination
Clean, variable controllability is good in debugging process, is achieved the debugging of near-nature forest light, and solving multiple illuminator combinations can not adjust
The problem of near-nature forest light out, and near-nature forest light is obtained by supplement red emitting luminophores, it solves through blue chip and fluorescence
The mode of cementing conjunction can not obtain the problem of complete near-nature forest light.
5th, white-light emitting body and red emitting luminophores can be using the miniature illuminators for meeting performance requirement, and light source is whole
For a miniature lamp bead, can multiple lamp beads be arranged on the electric connection structure plate of various lamps and lanterns with arbitrary form, since its is small in size
Ingeniously, it may be disposed at any position of electric connection structure plate, flexible in application, lamps and lanterns Integral luminous is uniform, good illumination effect.
Further, in the art, the rule illuminated according to a large amount of conventional white light, white light colour temperature is higher, shortwave
The ratio of long component is higher, and blue light is higher or even purple light is also higher, and high blue light harm health is the beyond all doubt fact, together
When high color temperature be conducive to promote identification, promote the bright sense of environment, the state of mind for promoting people is also generally acknowledged common sense, conventional
Light source is usually the white light of the high blue light of high color temperature, inevitable both advantageous and disadvantageous, it is difficult to take into account the demand of various aspects.According to Fig.7, originally
Light source still meets blue light relative spectral power less than 0.75 in the high color temperature of 4000K or more, is a kind of low indigo plant of high color temperature
Optical illumination can have the effect of simultaneously with eye health and the excitation state of mind.
In the present embodiment, the fluorescent film 212 of white-light emitting body 21 is fluorescent film or phosphor film, and blue chip 211 is
Blue chip, the wave-length coverage of the blue chip are 450-480nm；The wave-length coverage of red light chips is 640-700nm, specifically may be used
To be between some smaller area in the range, such as wave-length coverage is 680-700nm, and corresponding central wavelength is 690 ± 5nm.
Central wavelength is usually the central value of wave-length coverage, and allows to have the adjustable section ± 2nm or so.The case where for different sections,
Central wavelength can also be that 660nm, 670nm, 680nm etc., the present embodiment are not limited to a certain kind.Preferably, blue chip
Wave-length coverage be 457.5-480nm, at least 457.5nm-460nm.
In the LED light source of numerous near-nature forest light, green light ratio is difficult to promotion, more in the case where dragging down blue light
Add and be difficult to be promoted green light, while aobvious finger R12 corresponding with green light is also to be difficult to be promoted.The embodiment of the present invention then passes through breakthrough and passes
Convention of uniting (using 450-455nm blue chip), has selected the blue chip of 457.5nm-480nm, has on the other hand been dedicated to glimmering
The exploitation of light film is worked along both lines so that the relative spectral power of green light is obviously improved.Simultaneously because the promotion of green light, simultaneously
Aobvious finger R12 is promoted, also helps somewhat to be able to maintain higher color temperature while inhibiting blue light.Such as Figure 11, tradition
Green light relative spectral power in near-nature forest light is lower than 0.3, and such as Fig. 6 and Fig. 7, the green light relative spectral power in the present embodiment reaches
To 0.4 or more.
It show the spectrum of white-light emitting body 21 in the present embodiment with further reference to Figure 10 and Figure 11, Figure 10, uses
When the blue chip of 457.5nm-460nm, green light relative spectral power has reached 0.5 or more, using 457.5nm-460nm's
It can be higher when blue chip.When using 452.5-455nm blue chip in Figure 11, green light relative spectral is only 0.35-0.38
Between.
Also, by the test of different-colour light source, when the colour temperature of quasi- natural light is 2700K-3000K, 475-492nm wave
The green light relative spectral power of section is greater than 0.30；When the colour temperature of quasi- natural light is 4000K-4200K, the blueness of 475-492nm wave band
Light relative spectral power is greater than 0.40；When the colour temperature of quasi- natural light is 5500K-6000K, the green light of 475-492nm wave band is opposite
Spectral power is greater than 0.50.
As a kind of embodiment of fluorescent film, fluorescent film includes colloid and the fluorescent powder that is mixed in inside colloid, fluorescent powder
Including rouge and powder, green powder and yellowish green powder；The chromaticity coordinates of rouge and powder is X:0.660~0.716, Y:0.340~0.286；The color of green powder is sat
It is designated as X:0.064~0.081, Y:0.488~0.507；The chromaticity coordinates of yellowish green powder be X:0.367~0.424, Y:0.571~
0.545；The weight ratio of rouge and powder, green powder and yellowish green powder are as follows: rouge and powder: green powder: yellowish green powder=(0.010~0.035): (0.018~
0.068): (0.071~0.253)；The concentration of fluorescent film is 17%~43%.The partial size of rouge and powder, green powder and yellowish green powder is respectively less than
15 μm, preferably 13 ± 2 μm.
Further, rouge and powder is preferably nitride red fluorescent powder, it is highly preferred that the nitride red fluorescent powder includes
CaSrAlSiN3 (1113 structure).And green powder is preferably nitrogen oxide green fluorescent powder, it is highly preferred that the nitrogen oxides is green
Fluorescent powder includes BaSi2O2N2 (1222 structure).And the yellowish green powder preferably includes Y3Al5Ga5O12 (i.e. gallium doped yttrium aluminum
Garnet).CaSrAlSiN3 class nitride red fluorescent powder, BaSi2O2N2 class nitrogen oxide green fluorescent powder and Y3Al5Ga5O12
Yellow-green fluorescence powder can reach the chromaticity coordinates that respective fluorescent powder needs, and have better luminous intensity and stability, very
Suitable in the fluorescent powder of the embodiment of the present invention.The type of above-mentioned fluorescent powder is commercially available.
Embodiment 1 as fluorescent film:
A kind of fluorescent film, containing AB silica gel, CaSrAlSiN3 red fluorescence powder (chromaticity coordinates, X:0.660-0.716, Y:
0.286-0.340), BaSi2O2N2 green emitting phosphor (chromaticity coordinates, X:0.064-0.081, Y:0.488-0.507) and
Y3Al5Ga5O12 yellow-green fluorescence powder (chromaticity coordinates, X:0.367-0.424, Y:0.545-0.571)；Wherein, CaSrAlSiN3 is red
The weight ratio of fluorescent powder, BaSi2O2N2 green emitting phosphor and Y3Al5Ga5O12 yellow-green fluorescence powder is (0.020-0.035):
(0.018-0.030): (0.140-0.253), the mass percentage of three kinds of fluorescent powders in fluorescent film are 33-43%.
The fluorescent film is excited by blue light, can get the white light for the near-nature forest light that colour temperature is 2700K-3000K: in spectrum,
The relative spectral that the relative spectral of 480-500nm wave band is greater than 0.30,500-640nm wave band is greater than 0.70.
Embodiment 2 as fluorescent film
A kind of fluorescent film, containing AB silica gel, CaSrAlSiN3 red fluorescence powder (chromaticity coordinates, X:0.660-0.716, Y:
0.286-0.340), BaSi2O2N2 green emitting phosphor (chromaticity coordinates, X:0.064-0.081, Y:0.488-0.507) and
Y3Al5Ga5O12 yellow-green fluorescence powder (chromaticity coordinates, X:0.367-0.424, Y:0.545-0.571)；Wherein, CaSrAlSiN3 is red
The weight ratio of fluorescent powder, BaSi2O2N2 green emitting phosphor and Y3Al5Ga5O12 yellow-green fluorescence powder is (0.010-0.022):
(0.020-0.040): (0.080-0.140), the mass percentage of three kinds of fluorescent powders in fluorescent film are 25-35%.
The fluorescent film is excited by blue light, can get the white light for the near-nature forest light that colour temperature is 4000K-4200K: in spectrum,
The relative spectral that the relative spectral of 480-500nm wave band is greater than 0.45,500-640nm wave band is greater than 0.65.
Embodiment 3 as fluorescent film
A kind of fluorescent film, containing AB silica gel, CaSrAlSiN3 red fluorescence powder (chromaticity coordinates, X:0.660-0.716, Y:
0.286-0.340), BaSi2O2N2 green emitting phosphor (chromaticity coordinates, X:0.064-0.081, Y:0.488-0.507) and
Y3Al5Ga5O12 yellow-green fluorescence powder (chromaticity coordinates, X:0.367-0.424, Y:0.545-0.571)；Wherein, CaSrAlSiN3 is red
The weight ratio of fluorescent powder, BaSi2O2N2 green emitting phosphor and Y3Al5Ga5O12 yellow-green fluorescence powder is (0.010-0.020):
(0.030-0.068): (0.071-0.130), the mass percentage of three kinds of fluorescent powders in fluorescent film are 17-27%.
The fluorescent film is excited by blue light, can get the white light for the near-nature forest light that colour temperature is 5500K-6000K: in spectrum,
The relative spectral that the relative spectral of 480-500nm wave band is greater than 0.40,500-640nm wave band is greater than 0.60.
By selecting above-mentioned blue chip and fluorescent film, white light can be obtained, spectrum is as shown in Figure 10.It has as follows
Optical parameter: when colour temperature is 2700K-3000K, the relative spectral power of 480-500nm wave band is greater than 0.30；500-640nm wave
The relative spectral power of section is greater than 0.70；When colour temperature is 4000K-4200K, the relative spectral power of 480-500nm wave band is greater than
0.45；The relative spectral power of 500-640nm wave band is greater than 0.65；When colour temperature is 5500K-6000K, 480-500nm wave band
Relative spectral power is greater than 0.4；The relative spectral power of 500-640nm wave band is greater than 0.60.This white-light emitting body 21 with it is upper
State the combination of red emitting luminophores 22, the near-nature forest light LED light source of the available low high green light of blue light.
Further, with reference to Fig. 8 and Fig. 9, the spectrum of this light source is also extremely similar with natural light in its all band, and existing
Near-nature forest radiant is then difficult to realize.Such as Fig. 6 and Fig. 7, the relative spectral power of red light is greater than 0.60 in near-nature forest light；Closely certainly
The relative spectral power of orange-colored light is greater than 0.55 in right light；The relative spectral power of sodium yellow is greater than 0.50；Green light it is opposite
Spectral power is greater than 0.35；The relative spectral power of purple light is close with natural light less than 0.10.
In addition, this light source while each band spectrum more optimizes, is also required with stringent optical parameter, such as color
Temperature, color tolerance, colour rendering index Ra, colour rendering index R9, colour rendering index R12 and blue light color ratio etc..Specifically, near-nature forest light
Colour temperature includes 2500K-6500K, and color tolerance is less than 5.It is aobvious to refer to that Ra is greater than 95, wherein the aobvious finger of R9 is big greater than the aobvious finger of 90, R12
In 80.It can determine that this light source can satisfy above-mentioned requirements according to Fig. 7, and the blue light color ratio of this light source can be reduced to
5.5% hereinafter, colour rendering index Ra is increased to 97 or more, and colour rendering index R9 reaches 95 or more, and colour rendering index R12 has reached 83,
In other test report, colour rendering index R12 can achieve 87.
Further, the blue light of 440nm is maximum to the injury of eyesight in blue light, as further prioritization scheme, this reality
Example is applied also using the relative spectral power of 440nm blue light as optical parameter to be detected.The case where blue light color ratio is lower than 5.7%
Under, the relative spectral power of 440nm blue light is lower than 0.65.This is that existing eyeshield electronic equipment is difficult to realize.Existing " shield
Eye " electronic product, blue light color ratio is although lower, but wherein injures the inhibition of maximum 440nm blue light and unknown to human eye
Aobvious, eye-protecting function is very little.And other wavelength band components in blue light are necessary visual acuity, significantly inhibit blue light not
Only eyeshield effect is unobvious, can also cause adverse effect to the visual acuity of the crowds such as children, child, such as due to blue light ingredient
Excessive missing, lead to anomalous trichromatism, the problems such as chromatic discrimination power declines.The present embodiment blue light color ratio is reduced to it is 5.7% below
On the basis of, emphasis inhibits the intensity of 440nm blue light, can really play the role of protecting eyesight.
The present invention is to carry out a large amount of pilot scale study using above-mentioned optical parameter and spectrum as target, final to determine using above-mentioned
White-light emitting body 21 and red emitting luminophores 22, and the luminous flux of white-light emitting body 21 and the light of red emitting luminophores 22 has been determined
The ratio between amount of radiation, based on the determining corresponding electrical parameter of the ratio and experiment, in the illuminator production for choosing appropriate size and quantity
State light source.
It is preferred that miniature white-light emitting body 21 and red emitting luminophores 22 are used, according to the size of light flux ratio and installation space
Selection small dimension and the higher blue chip of cost performance and red light chips, preferential selection few as far as possible red emitting luminophores 22 and white light
Illuminator 21, is fabricated to single light source, and one group of light emitting structure 20 is arranged in a light source.Due to the light source can directly issue it is close from
Right light, and then can be used in various lamps and lanterns, any combination, it can guarantee its preferable illumination effect, it is adaptable.Certainly,
Multi-group light-emitting structure 20 can also be integrated in a light source, still can guarantee preferable light-out effect at this time, only size increases.
Specifically, the ratio between light radiation of the luminous flux of the white-light emitting body 21 and red emitting luminophores 22 is 2-10:1, excellent
It is selected as 2-3:1.Under different colour temperatures, which slightly floats.In one embodiment, the quantity of white-light emitting body 21 and red
The quantity ratio of light illuminator 22 is 1-8:1, further preferably 1-4:1.The light radiation of practical red emitting luminophores 22 is 80-
160mW, the total light flux of white-light emitting body 21 are 200-350lm.
In one embodiment, there are four white-light emitting bodies 21, red emitting luminophores 22 have one, four white-light emitting bodies 21
It is set to around red emitting luminophores 22 and is uniformly distributed.
In another embodiment, there are two white-light emitting bodies 21, red emitting luminophores 22 have one, two white-light emitting bodies
21 are symmetrically disposed on the two sides of red emitting luminophores 22.
About the mounting means of chip, preferably by blue chip and red light chips upside-down mounting in the surface of carrier 10, upside-down mounting core
Piece is conducive to effectively connect with the electric connection structure 30 on carrier 10, is conducive to high efficiency and heat radiation, can be by equipment on chip
Unified film forming, guarantees that the fluorescent film consistency of different product is good, and then can cause unanimously to avoid the dispensing process of formal dress chip
Property difference problem, meanwhile, so that different product when colour temperature is identical be in same BIN, colour temperature consistency is good.
In addition, flip-chip but also the volume of white-light emitting body 21 further decreases, is conducive to dimension of light source control.?
In the present embodiment, the width of white-light emitting body 21 is less than 0.8mm, is highly less than 0.3mm, and red emitting luminophores 22 are can be controlled in equally
In range.Adjacent white-light emitting body 21 and 22 spacing of red emitting luminophores is 1mm or less.The length of this light source is less than or equal to
6mm, width are less than 3mm.
Certainly, the present invention is not limited to using flip-chip, is also feasible using positive cartridge chip.
In one embodiment, carrier 10 is preferably the lamellar structure of nonmetallic materials production, and carrier 10 is equipped with reflection
Cup 11, white-light emitting body 21, red emitting luminophores 22 are set in reflector 11, and electric connection structure 30 is formed in the table of carrier 10
Face, and the tow sides of carrier 10 are wrapped in, and pin is formed except reflector 11, the bottom exposed portion electricity of reflector 11
Connection structure 30, for being connect with white-light emitting body 21 and red emitting luminophores 22.
Further, the inner wall of reflector 11 is equipped with reflective surface 111, is also filled with packing colloid inside reflector 11
(not shown), reflective surface 111 for white light and feux rouges to be reflected, packing colloid for protect 11 internal structure of reflector and
Keep light-source structure more stable, and refraction adjustment is carried out to light.White light and feux rouges export after being sufficiently mixed by packing colloid.
Specifically, the light emitting angle of white-light emitting body 21 and red emitting luminophores 22 can be 160 ° or so, and the light-emitting angle of light source is
120 ° or so.Entire light source is the near-nature forest light lamp bead of small-sized uniformly light-emitting.
In the present embodiment, electric connection structure 30 has several groups positive and negative anodes pin, can be one group of illuminator correspondence each
Positive and negative anodes pin or the corresponding one group of positive and negative anodes pin of several illuminators.In driving method, there are two types of embodiments, first,
White-light emitting body 21 and red emitting luminophores 22 are separately connected different positive and negative anodes pins, are operated alone, at this time respective driving electricity
Stream is different, and control chip can be cooperated to be controlled.Second, white-light emitting body 21 and red emitting luminophores 22 are connected, that is, connect phase
Same positive and negative anodes pin, unified same current driving are not required to control chip and are controlled.
With reference to Fig. 1 and Fig. 2, two white-light emitting bodies 21 and a red emitting luminophores 22 are connected, two white-light emitting bodies 21
It is separately connected first pin 31,31 self-reflection cup of the first pin, 11 bottom is stretched out, for connecting external power supply.Red light-emitting
Body 22 is series between two white-light emitting bodies 21.
Further, which is also provided with second pin 32, which is not used in connection external power supply, and
It is and to promote the symmetry of light source entirety for radiating, the stability for promoting intensity and being installed on 30 plate of electric connection structure.
The first above-mentioned embodiment is easier to implement.And second of embodiment, spectrum debugging is extremely very long and complicated
Process, specific debugging process is as shown in hereinafter.But the mode of this unified driving obviously has apparent advantage, no
It needs to configure different driving currents for different illuminators, does not need to increase control electric connection structure 30, it is only necessary to according to it
Corresponding electric current power supply.Therefore, more simplified in structure, volume further decreases, and application is easier flexibly, cost
It is lower.This is currently preferred 30 connection scheme of electric connection structure.
Further, the embodiment of the present invention can also add a color temperature adjustment chip, the color temperature adjustment over the carrier 10
Chip is arranged independently of light emitting structure 20, correspondingly, carries out appropriate adjustment to electric connection structure 30, makes color temperature adjustment chip can be with
It is independent to shine or extinguish, and then by controlling its luminance, the near-nature forest light issued with light emitting structure 20 is mixed, and is adjusted
Colour temperature.
About the optical property of this light source, it should be mentioned that this light source is all satisfied the case where requiring in spectrum and optical parameter
Under, the relative spectral power of 640-700nm feux rouges is obviously improved, this is difficult to reality in existing near-nature forest radiant
It is existing, it is mainly shown as that the promotion of feux rouges and entire spectral shape and other optical parameters are difficult to take into account.The present embodiment passes through a large amount of
Basic research and continuous optimization process be just achieved.Such as Fig. 6, wavelength is the feux rouges relative spectral power of 680~690nm
Greater than 0.80；The feux rouges relative spectral power that wavelength is 622~680nm is greater than 0.60.Such as Fig. 9 and Figure 14, traditional near-nature forest light
Light source the trend being decreased obviously can occur in the wave band after 640nm.640-700nm feux rouges has excellent health care, physical therapy, beauty
Appearance effect.The light source is suitable for handling official business, lighting of home and needs high proportion feux rouges and the Code in Hazardous Special Locations close to natural lighting.
Also, by the test of different-colour light source, when the colour temperature of quasi- natural light is 2700K-3000K, 640-700nm is red
The relative spectral power of light is greater than 0.70；When the colour temperature of quasi- natural light is 4000K-4200K, the light relatively of 640-700nm feux rouges
Spectral power is greater than 0.60；When the colour temperature of quasi- natural light is 5500K-6000K, the relative spectral power of 640-700nm feux rouges is greater than
0.50。
Hereinafter, briefly explaining the optimization process of the high green light LED illuminating part.
The optimization process of the high green light LED illuminating part is divided into two kinds, one is it is directed to the optimization process of different driving electric current,
The second is being directed to the optimization process of identical driving current.
Include the following steps: for the optimization process of different driving electric current
Step S101 chooses the first illuminator, and first illuminator is for issuing white light；
Step S102 optimizes the spatial distribution of first illuminator, the white light is optimized for the first near-nature forest light；
Step S103, according to the spatial distribution of the first near-nature forest light and the spatial distribution of natural light, determine described in
The wave band to be optimized of first near-nature forest light；
Step S104, according to second illuminator of waveband selection to be optimized；
Step S105 lights the first illuminator and according to the light flux ratio of preset first illuminator and the second illuminator
Two illuminators；
Step S106 optimizes first hair by adjusting the spatial distribution of first illuminator and the second illuminator
The combination spectrum of body of light and the second illuminator obtains near-nature forest light.
Include the following steps: for the optimization process of identical driving current
Step S201 chooses the first illuminator, and first illuminator is for issuing white light；
Step S202 optimizes the spatial distribution of the first illuminator, white light is optimized for the first near-nature forest light；
Step S203 determines described first according to the spatial distribution of the first near-nature forest light and the spatial distribution of natural light
The wave band to be optimized of near-nature forest light；
Step S204, according to second illuminator of waveband selection to be optimized；
Step S205 determines the initial luminous flux ratio of the first illuminator and the second illuminator；
Step S206 optimizes the first illuminator and the by adjusting the spatial distribution of the first illuminator and the second illuminator
The combination spectrum of two illuminators, obtains near-nature forest light and the driving current of first illuminator and the second illuminator is identical or two
The difference of person is within a predetermined range；Wherein, the adjusting of the spatial distribution of the first illuminator and the second illuminator is included at least to drive
The adjusting of streaming current.
As it can be seen that two kinds of optimization process main distinctions are in the 6th step.In second of optimization process, finally need in driving electricity
Flow acquisition near-nature forest light in identical situation.And the complexity difference that the difference directly results in both optimization process is huge.
In first five step of two kinds of optimization process, firstly, choosing white-light emitting body as the first illuminator, with the white light
For illuminator as host emitter, the wave-length coverage that host emitter is included is larger, includes at least 400-640nm wave band.By white light
It is optimized for the first near-nature forest light, so that the white light as close as natural light, in optimization process, makes the relative spectral of white light
Power improves as far as possible, in this way, it is more simple to select the type of subsequent second illuminator, and is conducive to two illuminators
The optimization of combination spectrum, the first near-nature forest light of white-light emitting body has previously described feature after optimization.
With reference to the first near-nature forest light spectrum, it can determine and require supplementation with 640-700nm feux rouges.Selection glows in turn
Second illuminator, one side is used for and the combination of the first illuminator, obtains the illuminating ray for being more nearly natural light；Another party
Face can lower blue light, which can confirm by basic research early period, about in basic research by supplementing feux rouges
Appearance can be described in detail later.
Further, according to the curve of spectrum of the first near-nature forest light, and by a large amount of combination spectrum pilot scale studies, determining should
The central wavelength of second illuminator is selected as 690 ± 5nm, it is therefore intended that and can be as far as possible after the combination of the first near-nature forest light spectrum
Make the relative spectral power of 640-700nm feux rouges close to the spectrum of natural light.
In the 5th step, after determining the first illuminator and the second illuminator, it can be selected according to the spectrum of two illuminators
Reasonable light flux ratio, i.e. the ratio between the luminous flux of the first illuminator and the light radiation of the second illuminator, it is referred to herein as " initial
Light flux ratio " can primarily determine that this is initial according to the wave-length coverage and spectral signature of above-mentioned first near-nature forest light and feux rouges
Light flux ratio is feasible in the range of 2-10:1.Further, which may further determine that by experiment
Than in the range of 2-5:1, then the first illuminator and respective counts according to preset initial luminous flux than lighting respective numbers
Second illuminator of amount, optimizes the process of combination spectrum.
The 6th step in the first optimal way:
Be mainly adjusted by the first illuminator and the second illuminator driving current adjust the first illuminator luminous flux and
The light radiation of second illuminator.Firstly, adjusting the driving current of the first illuminator and the second illuminator, and monitor combination in real time
Spectrum, until each wave band relative spectral power of combination spectrum reaches preset range.It is then detected that the Optical Parametric of combination spectrum
Number continues to adjust driving current if optical parameter is unqualified, until optical parameter reaches preset range, confirmation obtains close at this time
Natural light.Finally, actual ratio, the first illuminator of the light radiation of the luminous flux and the second illuminator of the first illuminator of record
Practical driving current and corresponding optical parameter with the second illuminator.
It, can be there are two types of selection, first, adjustment fluorescent film is matched when adjustment driving current cannot be met the requirements repeatedly
Side and/or concentration and/or thickness；Second, the central wavelength or increase central wavelength of the second illuminator of adjustment are different from second
The third illuminator of illuminator.According to the basic research of early period, available fluorescent film and spectrum optimization relationship and feux rouges with
The relationship of spectrum optimization can choose suitable mode adjusting and optimizing scheme under corresponding theoretical direction.
Specifically, first way specifically includes: first, the formula for adjusting fluorescent film adjusts the relative spectral function of each wave band
Rate and colour rendering index；The formula refers to the component and proportion of phosphor material powder in fluorescent film.Second, adjust the concentration of fluorescent film
Adjust colour rendering index and colour temperature；The concentration refer to be formulated determine in the case where, content size of the fluorescent powder in fluorescent film；The
Three, the thickness for adjusting fluorescent film adjusts colour temperature.
In the second way, the central wavelength or increase central wavelength for adjusting the second illuminator are different from second and shine
The third illuminator of body is allowed to optimize after combining with the first illuminator.By carrying out a large amount of basic research, can determine
Second illuminator is distributed to combination spectrum and optical parameter also has important influence.
The 6th step in second of optimal way:
Near-nature forest light is not only obtained, also to meet that driving current is consistent, or slightly has difference in a small range of permission,
So that not will lead to the significant change of spectrum and optical parameter when driving using same current in actual work.It says in detailed below
6th step of bright second of optimal way:
6th step S206 includes following sub-steps:
S21: the driving current of the first illuminator and the second illuminator is adjusted, and monitors combination spectrum in real time, when a group light combination
When the relative spectral power of spectrum reaches preset range, step S22 is carried out, step S21 is otherwise repeated；
S22: the optical parameter of detection combination spectrum carries out step S23, otherwise when optical parameter reaches preset range
Come back for step S21；
S23: the driving current of the first illuminator and/or the second illuminator is adjusted, two driving currents is made to reach unanimity；
S24: according to the variation of the relative spectral power of combination spectrum, the luminous flux and/or second of the first illuminator is adjusted
The light radiation of illuminator, and monitor combination spectrum in real time, when the relative spectral power of combination spectrum meets preset range, into
Otherwise row step S25 carries out step S21；
S25: the optical parameter of detection combination spectrum, when optical parameter reaches preset range, confirmation obtains near-nature forest light,
Step S26 is carried out, step S21 is otherwise carried out；
S26: the luminous flux and second of the practical driving current of the first illuminator of record and the second illuminator, the first illuminator
The actual ratio of the light radiation of illuminator and the optical parameter of near-nature forest light.
Above step discloses the specific implementation process of step S206, firstly, lighting respective counts according to initial luminous flux ratio
The first illuminator and the second illuminator of amount adjust the luminous flux and the second hair of the first illuminator by adjusting driving current respectively
The light radiation of body of light, combination spectrum can change at this time, and after debugging several times, the shape of combination spectrum is (i.e. each
The relative spectral power of wave band) it is close in allowed band with natural light, confirm that spectrum is met the requirements at this time.
On this basis, optical parameter is checked, if optical parameter meets preset range, it is determined that obtain near-nature forest
Light adjusts driving current if optical parameter is unsatisfactory for preset range repeatedly, meets the requirements optical parameter.
After spectrum and optical parameter meet the requirements, driving current is usually inconsistent at this time, in order to realize unified drive
It is dynamic, subsequent adjustment need to be carried out, which is very long and complicated.Step S23 is carried out first: adjusting the first illuminator
And/or second illuminator driving current, so that two driving currents is reached unanimity；When electric current is consistent, combination spectrum necessarily occurs
Variation.In turn, it carries out step S24: according to the variation of the relative spectral power of combination spectrum, further adjusting the first illuminator
The light radiation of luminous flux and the second illuminator, and monitor combination spectrum in real time, the object adjusted in this step be luminous flux or
Person's light radiation, when the relative spectral power of combination spectrum meets preset range, the optical parameter of detection combination spectrum works as light
When parameter reaches preset range, confirmation obtains near-nature forest light.This is ideal situation.
However, relative spectral power is difficult to meet preset range, and optical parameter is also easy to appear wave after adjustment luminous flux
It is dynamic.Therefore, it is also desirable to repeat step S21 to S25, driving current (being at this time fine tuning) is readjusted, light relatively is made
Spectral power and Optical Parametric meet preset range.Since during repeating step S21-S25, debugging will do it and will drive every time
Streaming current is adjusted to consistent step, and therefore, in multiple adjustment, electric current will gradually reach unanimity, to luminous flux and electric current
Adjustment amplitude will be gradually reduced, and will eventually get the near-nature forest light for obtaining and meeting the requirements under driving current unanimous circumstances.
Further, in the optimization process of combination spectrum, it is understood that there may be following situation: by relatively repeatedly adjusting driving electricity
Stream, still cannot be such that spectrum or optical parameter meets the requirements, at this point, carrying out step S20:
The formula and/or concentration and/or thickness of adjustment fluorescent film 212, then carry out step S21 again；
Alternatively,
The central wavelength of the second illuminator is adjusted, step S21 is then carried out；
Alternatively,
Increase the third illuminator that central wavelength is different from the second illuminator central wavelength, then carries out step S21.
Equally, the relationship optimized according to the basic research of early period (in being explained later), available fluorescent film and spectrum, and
Feux rouges and the relationship of spectrum optimization can choose suitable mode adjusting and optimizing scheme under corresponding theoretical direction.
In actual optimization process, it is related to the adjustment of fluorescent film, the adjustment of the second illuminator and repeated multiple times
The adjustment of driving current and luminous flux could obtain final result.
Finally, needing to record relevant parameter after debugging, which is used to provide for the manufacturing of light source necessary
Information.
By above-mentioned optimization process, above-mentioned white-light emitting body 21 and red has been determined according to the light flux ratio of white light and feux rouges
The type of light illuminator 22, and the actual ratio of the light radiation of the luminous flux of white-light emitting body 21 and red emitting luminophores 22 is 2-
3:1, electric current is between 20-100mA, preferably 60mA.It is preferred that 1-4 white-light emitting body 21 and 1-2 red emitting luminophores 22 are gone here and there
Connection constitutes a light source, and the power of single light source is 0.5W or so.In the case that colour temperature is different, real data is slightly different.It can
To determine the corresponding data of several colour temperatures as needed, corresponding product is manufactured.For example, being used for the lamps and lanterns of office space, usually select
The higher product of colour temperature is selected, for the lamps and lanterns of household, generally selects the lower product of colour temperature.
Current LED light source, spectrum and optical parameter have been not easy close to natural light, and use same current driving more
It is extremely difficult.Different chip portfolios together, to obtain certain light, need to adjust electric current to reach preset requirement,
The driving current of several chips is usually different, if unified driving, spectral shape, optical parameter meet the requirements, finds white light
It is the largest technical difficulty with the type and luminous flux of feux rouges and the balance section of electric current, the present embodiment solves long in the field
Technical problem since phase.
The present embodiments relate to basic research it is as follows:
Basic research one: the research of near-nature forest light spectrum.
Natural light in nature shines from the sun, and different periods of the natural light at all seasons or even in one day are equal
There is difference, is mainly shown as the difference of spectrum and colour temperature.The sunlight in early morning in spring most makes people feel comfortable, the embodiment of the present invention
In, the solar spectrum in early morning in spring may be selected as reference, the relative spectral power and optical parameter of near-nature forest light are set.
Certainly, this is a kind of preferred embodiment, and the natural light of other times can be equally used for setting as measurement standard closely
The relevant parameter requirement of natural light.Optimization method provided in an embodiment of the present invention be suitable for the various times natural light, only need by
Certain parameters, which are done, slightly to be adjusted.
Basic research two: the relationship of spectral shape and fluorescence film formulation.Studies have shown that its corresponding light of fluorescence film formulation
Spectral shape relationship is very big；The ratio for changing a certain powder in formula, will be directly changed the relative spectral power of its respective wavelength section,
Its ratio is bigger, and the relative spectral power of corresponding wavelength is bigger, while can also change colour rendering index.Based on this, work as spectral shape
When undesirable with aobvious finger, the ratio of certain powder can be increased or decreased according to specific waveband selection, or change certain powder
Chromaticity coordinates parameter.
Basic research three: the relationship of spectral shape and fluorescent film concentration.Studies have shown that in the case where being formulated constant, it is glimmering
Light powder concentration is higher, and the relative spectral power of 490-700nm also can be higher and higher, until being more than blue spectrum power, with indigo plant
The relative spectral power of light reduces, and colour temperature can decline therewith, photochromic also to change, and aobvious refer to also changes correspondingly.Based on this, Ke Yitong
Change concentration is crossed to change aobvious finger and colour temperature.But concentration has been adjusted to certain state, when colour temperature is still undesirable, also
The formula rate of various powder in fluorescent film need to be changed, just can ensure that the photochromic of different-colour meets international standard (i.e. standard color temperature
Chromaticity coordinates).
Basic research four: the relationship of spectral shape and colour temperature and fluorescence film thickness.Studies have shown that constant in formula and concentration
In the case where, fluorescence film thickness is bigger, and colour temperature is lower.It, can be by changing thickness tune when colour temperature is unsatisfactory for requiring based on this
Whole colour temperature, and other parameters are influenced smaller.
Basic research five: driving current and spectral shape variation relation.Studies have shown that driving current and spectral shape change
Relationship is: (1) increasing the driving current of any chip (blue chip or red light chips), it will change its corresponding spectrum function
Rate；(2) by adjusting the driving current of two kinds of chips, available optimal spectrum optimum results；(3) increase one of core
The driving current of piece can inhibit the relative spectral of another chip to increase its luminous flux.It, can be by adjusting driving based on this
The mode of electric current adjusts combination spectrum, and inhibits blue light, it can inhibits blue light by way of increasing red light chips.
Basic research six: the relationship of red light chips specification and light radiation.Studies have shown that red light chips specification and light radiation
The relationship of amount is: under constant drive-current condition, under normal circumstances, with the increase of Chip scale, light radiation meeting
Increase.Based on this, the specification of the selection optimal red light chips of cost performance can be determined according to final actual light flux ratio.It should
Cost performance most preferably refers to that specification is small as far as possible, but can satisfy welding requirements, and light efficiency is high as far as possible, and good reliability combines price.
The present invention has also carried out basic research seven: the relationship of luminous flux and near-nature forest light the spectrum optimization of white-light emitting body,
Basic research eight: the relationship of light radiation and near-nature forest light the spectrum optimization of red light chips.Basic research seven is carried out to be intended to find
The specification and fluorescence film formulation and concentration and thickness of (cost performance) optimal blue chip；It finds as far as possible so that the first illuminator
Blue chip and fluorescent film of the light of sending close to nature spectrum；Basic research eight is intended to find (cost performance) optimal feux rouges core
The specification of piece is found the optimum value for inhibiting the light radiation (specification) of red light chips of blue light relative spectral, and is sought as far as possible
Look for so that combination spectrum close to nature spectrum red light chips.
Above-mentioned basic research is to select the main theory foundation and spectrum tune of blue chip, fluorescent film and red light chips
The theoretical foundation of parameter is continued to optimize during examination.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of high green light LED illuminating part, which is characterized in that including carrier, the carrier is equipped with electric connection structure, at least one set
Light emitting structure and reflector, the light emitting structure are set in the reflector and are connected with the electric connection structure；Every group of institute
Stating light emitting structure includes the white-light emitting body for emitting white light and the red emitting luminophores for emitting feux rouges, and the feux rouges is used
In the red light portion that the compensation white light is lacked relative to natural light, the white light is mixed with the feux rouges obtains near-nature forest light,
The relative spectral power of cyan light in the near-nature forest light is greater than 0.30；The relative spectral of blue light in the near-nature forest light
Power is less than 0.75.
2. high green light LED illuminating part as described in claim 1, which is characterized in that
When the colour temperature of the near-nature forest light is 2700K-3000K, the green light relative spectral power of 475-492nm wave band is greater than
0.30；
When the colour temperature of the near-nature forest light is 4000K-4200K, the green light relative spectral power of 475-492nm wave band is greater than
0.40；
When the colour temperature of the near-nature forest light is 5500K-6000K, the green light relative spectral power of 475-492nm wave band is greater than
0.50。
3. high green light LED illuminating part as described in claim 1, which is characterized in that the reference color temperature of the near-nature forest light includes
2700K-6000K, for color tolerance less than 5, colour rendering index of the colour rendering index Ra greater than 95, R12 is greater than 80.
4. high green light LED illuminating part as described in claim 1, which is characterized in that the white-light emitting body includes blue chip
With the fluorescent film for being set to the blue chip periphery, the fluorescent film includes colloid and the fluorescence that is mixed in inside the colloid
Powder, the fluorescent powder include rouge and powder, green powder and yellowish green powder；
The chromaticity coordinates of the rouge and powder is X:0.660~0.716, Y:0.340~0.286；
The chromaticity coordinates of the green powder is X:0.064~0.081, Y:0.488~0.507；
The chromaticity coordinates of the yellowish green powder is X:0.367~0.424, Y:0.571~0.545；
The weight ratio of the rouge and powder, green powder and yellowish green powder are as follows:
Rouge and powder: green powder: yellowish green powder=(0.010~0.035): (0.018~0.068): (0.071~0.253)；
The concentration of the fluorescent film is 17%~43%.
5. high green light LED illuminating part as described in claim 1, which is characterized in that the white-light emitting body includes blue chip
With the phosphor film for being set to the blue chip periphery.
6. high green light LED illuminating part as claimed in claim 4, which is characterized in that the white light tool that the white-light emitting body issues
There is following optical parameter:
When the colour temperature of the white light is 2700K-3000K, the relative spectral power of 480-500nm wave band is greater than 0.30；500-
The relative spectral power of 640nm wave band is greater than 0.70；
When the colour temperature of the white light is 4000K-4200K, the relative spectral power of 480-500nm wave band is greater than 0.45；500-
The relative spectral power of 640nm wave band is greater than 0.65；
When the colour temperature of the white light is 5500K-6000K, the relative spectral power of 480-500nm wave band is greater than 0.4；500-
The relative spectral power of 640nm wave band is greater than 0.60.
7. high green light LED illuminating part as described in claim 1, which is characterized in that the light relatively of feux rouges in the near-nature forest light
Spectral power is greater than 0.60；The relative spectral power of sodium yellow is greater than 0.50 in the near-nature forest light；The near-nature forest light Green
The relative spectral power of light is greater than 0.35.
8. high green light LED illuminating part as described in claim 1, which is characterized in that the carrier is non-metal carrier, the indigo plant
The wavelength of optical chip is 457.5-480nm, and the wavelength of the red light chips is 640-700nm, the blue chip and feux rouges core
Piece upside-down mounting is set to the carrier surface.
9. high green light LED illuminating part as described in claim 1, which is characterized in that the white-light emitting body and red emitting luminophores
It is respectively driven by identical driving current unified driving, or by different driving electric current.
10. a kind of lighting apparatus, which is characterized in that including the described in any item high green light LED illuminating parts of claim 1 to 9.
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| CN201810681577.1A CN109027779A (en) | 2018-06-27 | 2018-06-27 | A kind of high green light LED illuminating part and lighting apparatus |
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| CN201810681577.1A CN109027779A (en) | 2018-06-27 | 2018-06-27 | A kind of high green light LED illuminating part and lighting apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397627A (en) * | 2019-08-13 | 2021-02-23 | 光宝光电(常州)有限公司 | Light emitting device |
| US11508703B2 (en) | 2019-08-13 | 2022-11-22 | Lite-On Opto Technology (Changzhou) Co., Ltd. | Light emitting device for monitoring system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352970A (en) * | 2011-08-09 | 2012-02-15 | 中山大学 | Novel LED (light emitting diode) light source and illumination device thereof |
-
2018
- 2018-06-27 CN CN201810681577.1A patent/CN109027779A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352970A (en) * | 2011-08-09 | 2012-02-15 | 中山大学 | Novel LED (light emitting diode) light source and illumination device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397627A (en) * | 2019-08-13 | 2021-02-23 | 光宝光电(常州)有限公司 | Light emitting device |
| US11508703B2 (en) | 2019-08-13 | 2022-11-22 | Lite-On Opto Technology (Changzhou) Co., Ltd. | Light emitting device for monitoring system |
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