CN204420881U - Wavelength converter and light-emitting device - Google Patents
Wavelength converter and light-emitting device Download PDFInfo
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- CN204420881U CN204420881U CN201520077123.5U CN201520077123U CN204420881U CN 204420881 U CN204420881 U CN 204420881U CN 201520077123 U CN201520077123 U CN 201520077123U CN 204420881 U CN204420881 U CN 204420881U
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Abstract
The utility model discloses a kind of Wavelength converter; comprise the heat-conducting substrate, diffuse reflector and the phosphor powder layer that are cascading; described diffuse reflector has loose structure; the surface of exposing relative to described heat-conducting substrate and described phosphor powder layer of described diffuse reflector is provided with the seal protection layer it covered completely, is in jointly is enclosed in the seal chamber that formed by described heat-conducting substrate, phosphor powder layer and seal protection layer to make described diffuse reflector.The invention also discloses a kind of light-emitting device.Pass through the technical solution of the utility model, thus make the linkage interface of diffuse reflector and its both sides be in the coated space of sealing, can prevent Wavelength converter in long-term work process, be subject to the infiltration impact of the fine impurity such as steam, micronic dust, substantially increase reliability and the service life of Wavelength converter service behaviour thus.
Description
Technical field
The utility model relates to illumination and technical field of laser display, particularly relates to a kind of Wavelength converter and light-emitting device.
Background technology
In the prior art, there is a kind of colour wheel stacked gradually by aluminum nitride ceramic substrate, inorganic diffuse reflector and glass phosphor powder layer, the colour wheel of this version has both the feature that reflectivity is good and heat endurance is high simultaneously, and arbitrary dimension and shape can be made as required, being applicable to low cost, high efficiency batch production, is a kind of optical converting device can applied in high power laser light source.
Although above-mentioned inorganic colour wheel superior performance, because its inorganic diffuse reflector entirety is loose structure, therefore in Long-Time Service process, there will be following problem:
Steam in colour wheel working environment and micronic dust are adsorbed on the surface of colour wheel by the side surface of inorganic diffuse reflector and the linkage interface of inorganic diffuse reflector both sides, and As time goes on, be adsorbed on the steam on the surface of colour wheel and micronic dust constantly to the diffusion inside of colour wheel, under the acting in conjunction of steam and micronic dust, the color of inorganic diffuse reflector deepens gradually, reflectivity declines, make thus colour wheel in the course of the work bulk temperature significantly raise, and then the service behaviour of colour wheel and causing service life to be had a strong impact on.
Utility model content
Main purpose of the present utility model is to provide a kind of Wavelength converter, is intended to solve existing colour wheel structure because being easily subject to the invasion of the microparticle such as steam, micronic dust and the technical problem impacted serviceability and life-span.
For achieving the above object; the utility model provides a kind of Wavelength converter; comprise the heat-conducting substrate, diffuse reflector and the phosphor powder layer that are cascading; described diffuse reflector has loose structure; the surface of exposing relative to described heat-conducting substrate and described phosphor powder layer of described diffuse reflector is provided with the seal protection layer it covered completely, is in jointly is enclosed in the seal chamber that formed by described heat-conducting substrate, phosphor powder layer and seal protection layer to make described diffuse reflector.
Preferably, described heat-conducting substrate, diffuse reflector and phosphor powder layer are the loop configuration arranged with one heart, and described seal protection layer is the laminate structure of the circumferential and axial continuous distributed along described Wavelength converter; Wherein, the whole lateral surface of described Wavelength converter covers by the seal protection layer being positioned at the annular outboard of described Wavelength converter, and the medial surface of phosphor powder layer described in the whole medial surface of described Wavelength converter and described diffuse reflector covers by the seal protection layer being positioned at the annular inboard of described Wavelength converter.
Preferably, described seal protection layer comprises at least one in three anti-glue, silica gel and glass.
Preferably, the thickness of described seal protection layer is 1 ~ 20 μm.
Preferably, described seal protection layer is seal stacked sandwich construction successively.
Preferably, described seal protection layer comprises the first seal protection layer and the second seal protection layer, and described first seal protection layer directly adheres to described diffuse reflector, wherein:
Described first seal protection layer is made up of three anti-glue, and described second seal protection layer is made up of silica gel; Or described first seal protection layer is made up of silica gel, described second seal protection layer is made up of three anti-glue; Or described first seal protection layer is made up of glass, described second seal protection layer is made up of three anti-glue or silica gel.
Preferably, in described seal protection layer doped with reflection grain.
Preferably, described phosphor powder layer has the pore inwardly concaved from its surface, and described pore is blind hole or the through hole running through described phosphor powder layer, and described phosphor powder layer is provided with and is filled in described pore and the obturator of combining closely with the internal face of described pore.
Preferably, described obturator is made up of three anti-glue or silica gel.
In addition, for achieving the above object, the utility model also provides a kind of light-emitting device, comprise the wavelength described in above-mentioned any one technical scheme to walk around device, described light-emitting device also comprises one for the excitation source of outgoing exciting light, described phosphor powder layer is for absorbing described exciting light to produce Stimulated Light, and described diffuse reflector is used for carrying out scattered reflection to the mixed light of described Stimulated Light or described Stimulated Light and unabsorbed exciting light.
Compared to prior art; the utility model is provided with seal protection layer by the surface of exposing at diffuse reflector and the lamellar spacing of diffuse reflector respectively and between heat-conducting substrate and phosphor powder layer; thus make the linkage interface of diffuse reflector and its both sides be in the coated space of sealing; can prevent Wavelength converter in long-term work process, be subject to the infiltration impact of the fine impurity such as steam, micronic dust, substantially increase reliability and the service life of Wavelength converter service behaviour thus.
Accompanying drawing explanation
Fig. 1 is the structural representation of Wavelength converter one embodiment of the present utility model;
Fig. 2 is the partial enlarged drawing of part A shown in Fig. 1;
Fig. 3 is the structural representation of another embodiment of Wavelength converter of the present utility model;
Fig. 4 is the partial enlarged drawing of part B shown in Fig. 3;
Fig. 5 is the top view of Wavelength converter one embodiment of the present utility model.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of Wavelength converter, can be applicable to reflective type high-power LASER Light Source, see Fig. 1 and Fig. 2, in one embodiment, this Wavelength converter 100 comprises the heat-conducting substrate 110, diffuse reflector 120 and the phosphor powder layer 130 that are cascading, and wherein diffuse reflector 120 is for having the loose structure of some holes.As shown in Figure 1, one of exemplarily, heat-conducting substrate 110, diffuse reflector 120 and phosphor powder layer 130 is the loop configuration arranged with one heart, the internal-and external diameter of diffuse reflector 120 and phosphor powder layer 130 is roughly equal, and the internal diameter of heat-conducting substrate 110 is less than the internal diameter of diffuse reflector 120 and phosphor powder layer 130, the external diameter of heat-conducting substrate 110 and the external diameter of diffuse reflector 120 and phosphor powder layer 130 roughly equal.Should be appreciated that, when practical application, Wavelength converter 100 can be configured to any suitable size and shape, such as in discoideus non-circular structure, the utility model is not restricted this.
Particularly, heat-conducting substrate 110 can adopt the ceramic material of thermal conductivity factor comparatively large (such as thermal conductivity factor is more than or equal to 100W/mK) to make, while realizing heat conduction, higher temperature can also be tolerated, compared to by the substrate of the metallic plates such as such as aluminium sheet, steel plate, copper coin as more shaping high melting point glass (glass of softening temperature more than 500 DEG C), have the advantages that distortion is little, stability is high.In the present embodiment, heat-conducting substrate 110 can be made up of the one in aluminium nitride, silicon nitride, boron nitride, beryllium oxide and carborundum, and these heat-conducting substrate materials can form compact texture, and fusing point is all more than 1500 DEG C, far above the fusing point (700 DEG C) of aluminium, can withstand higher temperatures.
Diffuse reflector 120 is for reflecting incident light, and it specifically comprises white scattering particles.White scattering particles is generally salt or oxide-based powder, such as barium sulfate powder, alumina powder, titanium dioxide powder, Zirconium oxide powder etc., substantially can not absorb light, and the stable in properties of white scattering material, can not at high temperature be oxidized.Consider that diffuse reflector 120 needs good radiating effect, the alumina powder that preferred thermal conductivity is higher, certainly, in order to realize the function reflected the incident light of diffuse reflector 120.White heat sink material needs certain density and thickness in diffuse reflector 120, and this density and thickness are determined by experiment.
Phosphor powder layer 130 comprises fluorescent material, and fluorescent material can absorb exciting light and be excited to produce the light being different from excitation wavelength.Such as YAG (yttrium-aluminium-garnet) fluorescent material, YAG fluorescent powder can absorb blue light, ultraviolet light etc. and produce yellow Stimulated Light.In addition, fluorescent material can also be red fluorescent material, green fluorescence powder etc.
The Wavelength converter 100 of the present embodiment utilizes diffuse reflector 120 and heat-conducting substrate 110 to carry out alternative traditional mirror metal plate.Wherein diffuse reflector 120 comprises white scattering particles, and white scattering particles can carry out scattering to incident light, thus utilizes diffuse reflection to substitute the mirror-reflection in conventional metals reflecting layer, achieves the reflection to incident light.White scattering particles at high temperature also can not be oxidized and absorb incident light simultaneously, and therefore diffuse reflector 120 at high temperature also can not reduce reflectivity, can withstand higher temperatures.In addition, because heat-conducting substrate 110 is the one in aluminium nitride substrate, silicon nitride board, silicon carbide substrate, beryllium oxide substrate, the temperature higher than metallic aluminium can be tolerated.And, heat-conducting substrate 110 and diffuse reflector 120, linkage interface thermal resistance between diffuse reflector 120 and phosphor powder layer 130 are lower, by the heat conduction of phosphor powder layer 130 to heat-conducting substrate 110, and can be distributed in air, thus improve the heat endurance of Wavelength converter 100.To sum up, the Wavelength converter 100 of the present embodiment has taken into account higher reflectivity and heat endurance simultaneously, and serviceability is excellent.
According to the Wavelength converter 100 that the utility model embodiment obtains, diffuse reflector 120 is sintered by the white scattering particles mixed mutually and glass dust and forms, on microcosmic, diffuse reflector 120 is loose structure, the both sides of such as diffuse reflector 120 are fixed with heat-conducting substrate 110 and phosphor powder layer 130 respectively by bonding way, and linkage interface also exists micropore; Certainly, Wavelength converter 100 can also be the integral structure formed by sintering, namely heat-conducting substrate 110, diffuse reflector 120 are connected by the dielectric layer sintering formation between interface with phosphor powder layer 130, the Wavelength converter Stability Analysis of Structures obtained like this is high temperature resistant, can be applied to high-powerly to excite light-struck device.Due to the existence of loose structure, Wavelength converter 100 is in Long-Time Service process, steam in working environment and micronic dust are adsorbed on the surface of Wavelength converter 100 by the side surface of diffuse reflector 120 and the linkage interface of diffuse reflector 120 both sides, and As time goes on, the steam and the micronic dust that are adsorbed on the surface of Wavelength converter 100 constantly internally spread.Under the acting in conjunction of steam and micronic dust, the color of diffuse reflector 120 deepens gradually, thus cause reflectivity to decline, and then make Wavelength converter 100 during the course bulk temperature significantly rise, the service behaviour of Wavelength converter 100 and causing service life is had a strong impact on.
For the present embodiment Wavelength converter 100 in use due to self structure cause service behaviour and service life affected problem; the surface of exposing relative to heat-conducting substrate 110 and phosphor powder layer 130 of diffuse reflector 120 is provided with the seal protection layer it covered completely, is in jointly is enclosed in the seal chamber that formed by heat-conducting substrate 110, phosphor powder layer 130 and seal protection layer to make diffuse reflector 120.According to the difference of Wavelength converter 100 concrete shape structure, the surface that diffuse reflector 120 exposes can be divided into two kinds of situations to consider, one is non-circular structure, all sides of diffuse reflector 120 are exposed relative to heat-conducting substrate 110 and phosphor powder layer 130, another kind is loop configuration as depicted in figs. 1 and 2, the interior circumferential lateral surface of diffuse reflector 120 exposes relative to heat-conducting substrate 110 and phosphor powder layer 130, is described below for the diffuse reflector 120 being configured to loop configuration.
In the present embodiment; in the annular of diffuse reflector 120, outer surface is respectively equipped with circumferentially continuous distributed and also axially extends to the seal protection layer 140 of heat-conducting substrate 110 and phosphor powder layer 130, and the seal protection layer 140 of every side is tightly connected with heat-conducting substrate 110 and phosphor powder layer 130 respectively.That is, outer surface in the annular of diffuse reflector 120 and diffuse reflector 120 can cover the lamellar spacing respectively and between heat-conducting substrate 110 and phosphor powder layer 130 by seal protection layer 140 completely.Wherein seal protection layer 140 is transparent lamina structure, to avoid impacting the optical property of Wavelength converter 100.When practical application, seal protection layer 140 be after the agent structure (i.e. heat-conducting substrate 110, diffuse reflector 120 and phosphor powder layer 130 form as one structure) of shaping Wavelength converter 100 again by spraying, to brush and the mode such as sintering is attached on the interior outer surface of Wavelength converter 100.Be to be understood that, in order to ensure sealing effectiveness, prevent steam and micronic dust from entering the inside of Wavelength converter 100, the seal protection layer 140 of inside and outside both sides is the continuous distributed structure on Wavelength converter 100, such as when saving material, seal protection layer 140 with the side of diffuse reflector 120 for basic point is along Axis Extension to heat-conducting substrate 110 and phosphor powder layer 130 place, thus make the linkage interface of diffuse reflector 120 and its both sides be in the coated space of sealing, Wavelength converter 100 can be prevented in long-term work process to be subject to steam, the infiltration impact of the fine impurity such as micronic dust.Thus, after adding seal protection layer 140, substantially increase reliability and the service life of Wavelength converter 100 service behaviour.
In the preferred embodiment, seal protection layer 140 is the laminate structure of the circumferential and axial continuous distributed along Wavelength converter 100, the thickness of the seal protection layer 140 after such as shaping is 1 ~ 20 μm, such as get 1 μm, 10 μm or 20 μm etc., if seal protection layer 140 is excessively thin, then may there is interrupted distribution in forming process, fail the surface that diffuse reflector 120 exposes to cover completely; And seal protection layer 140 is blocked up; then do not mate because expanding with heat and contract with cold in Wavelength converter 100 course of work and cause seal protection layer 140 to break; through lot of experiment validation; the seal protection layer 140 of above-mentioned thickness (1 ~ 20 μm) can realize excellent seal protection function, can avoid again the problem causing product defects because thickness is not suitable with.Meanwhile, by the thickness of seal protection layer 140 is limited to 1 ~ 20 μm, also avoid the dynamic balancing affecting Wavelength converter 100 because of the uneven thickness of seal protection layer 140.Wherein, the whole lateral surface of Wavelength converter 100 covers by the seal protection layer 140 being positioned at the outside of Wavelength converter 100; the part of the whole medial surface phosphor powder layer 130 of Wavelength converter 100 and diffuse reflector 120 correspondence covers by the seal protection layer 140 being arranged in the inner side of Wavelength converter 100; thus increase the area coverage of seal protection layer 140, to improve the reliability of hermetically-sealed construction water proof and dust proof.
In the present embodiment; the Material selec-tion making seal protection layer 140 is extensive; such as can be made up of the one in three anti-glue (organic siliconresin), silica gel and glass, wherein three anti-glue can be existing known and be applicable to carry out diffuse reflector 120 any type of seal protection.For example; seal protection layer 140 is made up of three anti-glue; by Wavelength converter 100 is placed on the fixture of uniform rotation; and use Spray painting tool that liquid three anti-glue are sprayed on outer surface in Wavelength converter 100 equably; can significantly reduce spraying difficulty when all being covered by three anti-glue by outer surface in Wavelength converter 100, obviously also there is better sealing effectiveness.If three anti-solations are on the surface of heat-conducting substrate 110 and phosphor powder layer 130 in the anti-glue of spraying three and three anti-adhesive curing processes, scalpel or other any suitable sharp weapon then can be used after three anti-adhesive curings to be struck off by unnecessary three anti-glue, thus the dynamic balancing of Wavelength converter 100 can not be affected.In addition, three anti-glue can also to be coated in equably in Wavelength converter 100 on outer surface by painting way.Thickness after three anti-glue dry solidifications can be 1 ~ 20 μm; when ensureing that water-tight is dust-proof; the more little thickness uniformity more easily keeping seal protection layer 140 of thickness of the seal protection layer 140 obtained; be conducive to the dynamic balancing of Wavelength converter 100, during embody rule, the thickness of seal protection layer 140 is advisable to meet seal protection and not affect normal use of Wavelength converter 100.And, in order to enhance productivity, mode spraying or the brushing three anti-glue on outer surface in multiple Wavelength converter 100 simultaneously of Wavelength converter-mask-Wavelength converter-mask alternately superposition can also be adopted, wherein rubber blanket can be used as layer and the mask of being fastened between two adjacent Wavelength converters 100.The materials and methods more than preparing seal protection layer 140 is only some better embodiment of the present inventor's gained after experimental verification; in other embodiments; seal protection layer 140 can also be made up of other any suitable materials and methods, thus possesses the performance of dust-proof high-temp resisting high-humidity resisting.
The mode making seal protection layer 140 with the anti-glue of employing three is similar, and when adopting silica gel to make seal protection layer 140, detailed process can refer to above-mentioned explanation, and therefore not to repeat here.Three anti-glue and silica gel all have good waterproof seal; during normal use; because the lip temperature of Wavelength converter 100 is lower; therefore the seal protection layer 140 be covered on the interior outer surface of Wavelength converter 100 there will not be the phenomenon of season cracking because temperature is too high, the experiment proved that three anti-glue and silica gel are applicable to make the water proof and dust proof hermetically-sealed construction of Wavelength converter 100.And when adopting glass to make seal protection layer 140; first glass paste to be coated in Wavelength converter 100 on outer surface; then the Wavelength converter 100 of seal protection layer 140 preformed is had to put into electric furnace sinter molding; compared to above-mentioned three anti-glue, silica gel; the hard crisp characteristic of glass causes it easily to damage in vibration, and not easily processes.But; in other embodiments; with the same side of Wavelength converter 100 for reference; seal protection layer 140 can for seal stacked sandwich construction from the inside to the outside successively; and glass is positioned at innermost layer, glassy layer is outward layer of silica gel, can make up the hard crisp characteristic defective of glass on the one hand; glass can be utilized compared to the more resistant to elevated temperatures feature of silica gel on the other hand, improve the life-span of Wavelength converter 100 under high-temperature work environment.
See Fig. 3 and Fig. 4, in another embodiment, the seal protection layer of Wavelength converter 100 is seal stacked sandwich construction successively from the inside to the outside, more than such as two-layer or two-layer.When practical application; consider the impact of adhesion between difficulty of processing and the seal protection layer of unlike material; the seal protection layer of the present embodiment is double-decker; the first seal protection layer 140 ' and the second seal protection layer 150 from the inside to the outside successively; wherein between the first seal protection layer 140 ' and the second seal protection layer 150, there is stronger adhesion, to ensure the reliability of sealing effectiveness.Particularly, the first seal protection layer 140 ' is made up of three anti-glue, and the second seal protection layer 150 is made up of silica gel; Or the first seal protection layer 140 ' is made up of silica gel, the second seal protection layer 150 is made up of three anti-glue; Or the first seal protection layer 140 ' is made up of glass, the second seal protection layer 150 is made up of three anti-glue or silica gel.Thus, the first seal protection layer 140 ' and the second seal protection layer 150, by different materials mix and match, make Wavelength converter 100 be applicable to more applied environments.It should be noted that, when to use glass and silica gel or glass and three anti-glue simultaneously, should first seal with glass, and the sintering temperature of glass is lower than the fusing point of heat-conducting substrate 110, diffuse reflector 120 and phosphor powder layer 130, after glassy layer sintering, applies silica gel or three anti-glue again.
In addition; Wavelength converter 100 works in an airtight space usually; if produce vibration in the course of the work or there is veiling glare; then laser may be irradiated to the edge of Wavelength converter 100; it is no matter the seal protection layer 140 of above-mentioned single layer structure; or the double-decker combined by the first seal protection layer 140 ' and the second seal protection layer 150, is easily burnt when being subject to laser irradiation.In view of this; be described for seal protection layer 140; seal protection layer 140 comprises at least one in three anti-glue, silica gel and glass; by in seal protection layer 140 doped with reflection grain; form the high reflection layer of a sealing respectively with both sides inside and outside Wavelength converter 100, namely seal protection layer 140 has had both water proof and dust proof and the function to laser reflection simultaneously.In device debugging process; if careless manipulation and when having laser to be irradiated to the edge of Wavelength converter 100; the sealing reflecting layer formed by seal protection layer 140 can, effectively by laser reflection, make the material of non-refractory in seal protection layer 140 be effectively protected.
Wherein, in seal protection layer 140, the reflection grain of doping can be white scattering particles; be generally salt or oxide-based powder; such as barium sulfate powder, alumina powder, titanium dioxide powder, Zirconium oxide powder etc.; substantially can not absorb light; and the stable in properties of white scattering material, can not at high temperature be oxidized.As preferably, can in silica gel and glass mixed reflection particle.And for the seal protection layer of sandwich construction; because laser arrives the seal protection layer being positioned at innermost layer at first; therefore guarantee effectively by under the prerequisite of laser reflection, only can to adulterate reflection grain at the seal protection layer being arranged in innermost layer, thus reduce production cost.
When practical application, as shown in Figure 5, phosphor powder layer 130 has the pore 310 inwardly concaved from its surface, and pore 310 is positioned at outside laser facula irradiation area, can not be subject to laser direct irradiation in use.Pore 310 produces in Wavelength converter 100 production process, distributing position and shape size have certain randomness, and pore 310 is blind hole or the through hole running through phosphor powder layer 130, when pore 310 is through hole, diffuse reflector 120 can be made to expose on phosphor powder layer 130, because diffuse reflector 120 is loose structure, thus there is certain water suction dust suction characteristic, steam in environment for use and micronic dust can slowly through pore to diffuse reflector 120 diffusion inside, along with passage of time can reduce the reflectivity of diffuse reflector 120, the bulk temperature of Wavelength converter 100 is made significantly to increase, thus its service behaviour and service life are caused have a strong impact on.Therefore, the existence of pore 310 reduces reliability and the service life of product.In the present embodiment, phosphor powder layer 130 is provided with and is filled in pore 310 and the obturator (not shown) of combining closely with the internal face of pore 310, this obturator can be made up of arbitrarily used materials such as such as three anti-glue, silica gel, make phosphor powder layer 130 return to good working condition by pore 310 being filled and led up sealing, thus prevent steam or micronic dust from entering pore.Because obturator is positioned at outside laser facula irradiation area, be not subject to laser direct irradiation and be destroyed during normal use, therefore effectively can improve the yields of product, reliability and service life.
Such as, obturator is solidify to form by liquid three anti-glue or silica gel, consider that the size of pore 310 is less, small needle tube during embody rule, can be used to be instilled into or to instill in pore 310 by three anti-glue or silicone fluid, the viscosity size of drop with drop can completely or major part infiltrate pore 310 and be advisable.For the obturator that the anti-glue of employing three is made, can spontaneous curing be shaping in atmosphere after drop fills up pore 310; And for the obturator adopting silica gel to make, can after drop fills up pore 310, use heat to dry or moisture-curable.No matter adopt the obturator which kind of material is made, if have part to overflow on the surface of phosphor powder layer 130 in its process combined with phosphor powder layer 130, then can use as the cull on the surface of phosphor powder layer 130 strikes off by scalpel or other any suitable sharp weapon after curing molding, to make the surface of phosphor powder layer 130 keep smooth, thus can not impact the serviceability of Wavelength converter 100.Be appreciated that number and the distributing position of pore 310 shown in Fig. 5 are only citing, also can change in Suresh Kumar when practical application, be not therefore the restriction formed the structure of Wavelength converter 100.
According to the Wavelength converter that the technical scheme of the utility model embodiment prepares, when having both high reflectance and heat endurance, achieving water proof and dust proof sealing function, substantially increasing reliability and the service life of Wavelength converter
The utility model also provides a kind of light-emitting device, and in one embodiment, this light-emitting device wavelength comprised in above-described embodiment is walked around device, and comprises one for the excitation source of outgoing exciting light.Wherein phosphor powder layer is for absorbing exciting light to produce Stimulated Light, and diffuse reflector is used for carrying out scattered reflection to the mixed light of Stimulated Light or Stimulated Light and unabsorbed exciting light, and heat-conducting substrate is used for that diffuse reflector is conducted the heat of coming and is distributed in air.Should be appreciated that this light-emitting device also comprises other indispensabilities and parts known by those skilled in the art, concrete structure composition and operation principle can refer to the explanation of prior art, and therefore not to repeat here.
This light emitting device embodiment comprises whole technical schemes of the whole embodiment of above-mentioned Wavelength converter, and the technique effect reached is also identical, does not repeat them here.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a Wavelength converter; comprise the heat-conducting substrate, diffuse reflector and the phosphor powder layer that are cascading; described diffuse reflector has loose structure; it is characterized in that; the surface of exposing relative to described heat-conducting substrate and described phosphor powder layer of described diffuse reflector is provided with the seal protection layer it covered completely, is in jointly is enclosed in the seal chamber that formed by described heat-conducting substrate, phosphor powder layer and seal protection layer to make described diffuse reflector.
2. Wavelength converter as claimed in claim 1, it is characterized in that, described heat-conducting substrate, diffuse reflector and phosphor powder layer are the loop configuration arranged with one heart, and described seal protection layer is the laminate structure of the circumferential and axial continuous distributed along described Wavelength converter; Wherein, the whole lateral surface of described Wavelength converter covers by the seal protection layer being positioned at the annular outboard of described Wavelength converter, and the medial surface of phosphor powder layer described in the whole medial surface of described Wavelength converter and described diffuse reflector covers by the seal protection layer being positioned at the annular inboard of described Wavelength converter.
3. Wavelength converter as claimed in claim 1 or 2, it is characterized in that, described seal protection layer comprises at least one in three anti-glue, silica gel and glass.
4. Wavelength converter as claimed in claim 3, it is characterized in that, the thickness of described seal protection layer is 1 ~ 20 μm.
5. Wavelength converter as claimed in claim 3, it is characterized in that, described seal protection layer is seal stacked sandwich construction successively.
6. Wavelength converter as claimed in claim 5, it is characterized in that, described seal protection layer comprises the first seal protection layer and the second seal protection layer, and described first seal protection layer directly adheres to described diffuse reflector, wherein:
Described first seal protection layer is made up of three anti-glue, and described second seal protection layer is made up of silica gel; Or described first seal protection layer is made up of silica gel, described second seal protection layer is made up of three anti-glue; Or described first seal protection layer is made up of glass, described second seal protection layer is made up of three anti-glue or silica gel.
7. Wavelength converter as claimed in claim 1 or 2, is characterized in that, doped with reflection grain in described seal protection layer.
8. Wavelength converter as claimed in claim 1 or 2, it is characterized in that, described phosphor powder layer has the pore inwardly concaved from its surface, described pore is blind hole or the through hole running through described phosphor powder layer, and described phosphor powder layer is provided with and is filled in described pore and the obturator of combining closely with the internal face of described pore.
9. Wavelength converter as claimed in claim 8, it is characterized in that, described obturator is made up of three anti-glue or silica gel.
10. a light-emitting device, it is characterized in that, the wavelength comprised according to any one of claim 1 to 9 is walked around device, described light-emitting device also comprises one for the excitation source of outgoing exciting light, described phosphor powder layer is for absorbing described exciting light to produce Stimulated Light, and described diffuse reflector is used for carrying out scattered reflection to the mixed light of described Stimulated Light or described Stimulated Light and unabsorbed exciting light.
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| CN201520077123.5U CN204420881U (en) | 2015-02-03 | 2015-02-03 | Wavelength converter and light-emitting device |
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| CN201520077123.5U CN204420881U (en) | 2015-02-03 | 2015-02-03 | Wavelength converter and light-emitting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104713035A (en) * | 2015-02-03 | 2015-06-17 | 深圳市光峰光电技术有限公司 | Wavelength converting device, manufacturing method thereof and light-emitting device |
| CN105716039A (en) * | 2016-04-12 | 2016-06-29 | 杨阳 | Light conversion device and preparation method and application thereof |
| CN108267914A (en) * | 2016-12-30 | 2018-07-10 | 中强光电股份有限公司 | Wavelength converter and its projector |
| CN110017435A (en) * | 2018-01-10 | 2019-07-16 | 深圳光峰科技股份有限公司 | Wavelength converter |
| WO2020088160A1 (en) * | 2018-10-29 | 2020-05-07 | 深圳光峰科技股份有限公司 | Wavelength conversion device and light source system |
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2015
- 2015-02-03 CN CN201520077123.5U patent/CN204420881U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104713035A (en) * | 2015-02-03 | 2015-06-17 | 深圳市光峰光电技术有限公司 | Wavelength converting device, manufacturing method thereof and light-emitting device |
| CN104713035B (en) * | 2015-02-03 | 2016-06-29 | 深圳市光峰光电技术有限公司 | Wavelength converter, its manufacture method and light-emitting device |
| CN105716039A (en) * | 2016-04-12 | 2016-06-29 | 杨阳 | Light conversion device and preparation method and application thereof |
| CN108267914A (en) * | 2016-12-30 | 2018-07-10 | 中强光电股份有限公司 | Wavelength converter and its projector |
| US10824058B2 (en) | 2016-12-30 | 2020-11-03 | Coretronic Corporation | Projector and wavelength conversion device thereof |
| CN108267914B (en) * | 2016-12-30 | 2022-01-11 | 中强光电股份有限公司 | Wavelength conversion device and projector thereof |
| CN110017435A (en) * | 2018-01-10 | 2019-07-16 | 深圳光峰科技股份有限公司 | Wavelength converter |
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