CN110119058A - Wavelength converter - Google Patents
Wavelength converter Download PDFInfo
- Publication number
- CN110119058A CN110119058A CN201810122267.6A CN201810122267A CN110119058A CN 110119058 A CN110119058 A CN 110119058A CN 201810122267 A CN201810122267 A CN 201810122267A CN 110119058 A CN110119058 A CN 110119058A
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- China
- Prior art keywords
- heat
- radiating substrate
- wavelength converter
- wavelength
- light receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
Abstract
The invention discloses Wavelength converter, the Wavelength converter includes: heat-radiating substrate, the heat-radiating substrate shape in disk form；At least one wavelength convert module, at least one described wavelength convert module are located at the light receiving surface of the heat-radiating substrate；And the heat-radiating substrate has centrosymmetric hierarchic structure, and at least one described wavelength convert module is arranged on the corresponding step surface of the hierarchic structure with annulus shape respectively.The present invention is capable of providing the Wavelength converter that heat dissipation performance, stability and service life are improved.
Description
Technical field
The present invention relates to image display arts, more specifically, are related to a kind of Wavelength converter.
Background technique
In recent years, as science and technology continues to develop, requirement of the people to image display is higher and higher.Laser light source becomes
Wherein most there is one of the technical research direction of development potentiality.In the technical field of laser light source, generally use with iridescent
Take turns the Wavelength converter of mechanism.Wherein, the fluorescence colour wheel laser around center axis rotation, as exciting light driven by a moto
Converge and expose to the phosphor material powder layer that fluorescence wheel surface is arranged in a manner of applying etc. so that phosphor material powder be stimulated and
The fluorescence of color needed for issuing.
Fig. 1 shows the structure diagram of the Wavelength converter in the prior art with iridescent wheel mechanism.It includes
Heat-radiating substrate 100, drive motor 200 and luminescent layer 300.Heat-radiating substrate 100 has circular surface, for issuing different colours
For the luminescent layer 300 of fluorescence with arc or fan shape coated on the surface of heat-radiating substrate, drive motor 200 is set to heat dissipation base
The center at the back side of plate 100, driving whole device are rotated around the center of circle.
In order to obtain the display image of high quality, as low as Portable miniature projector, cinema projector is arrived greatly, all continuous
The brightness of light source is improved, the display instrument of high brightness is the inexorable trend of later display industry development.However, not with brightness
It is disconnected to increase, the power of light source will certainly be improved.Using high power laser sources, there is fluorescence shown in Fig. 1
The heat dissipation performance of the Wavelength converter of colour wheel mechanism is bad, affects the stability and service life of device.
Summary of the invention
In view of the above-mentioned problems, present invention contemplates that providing a kind of wave that can be improved heat dissipation performance, stability and service life
Long conversion equipment.
Embodiment according to the present invention provides a kind of Wavelength converter, comprising: heat-radiating substrate, the heat-radiating substrate are in
Disc-shape；At least one wavelength convert module, at least one described wavelength convert module are located at the light of the heat-radiating substrate
Surface；The heat-radiating substrate has centrosymmetric hierarchic structure, and at least one described wavelength convert module is respectively with circle
Ring-shaped is arranged on the corresponding step surface of the hierarchic structure.
Preferably, the Wavelength converter further includes drive motor, and the drive motor is located at the heat-radiating substrate
The center position of the non-light receiving surface opposite with the light receiving surface, the drive motor drive the Wavelength converter around
Center rotation.
Preferably, the light receiving surface of the heat-radiating substrate can be gradually recessed in the form of stair-stepping from outside to inside.
Alternatively, the light receiving surface of the heat-radiating substrate can be gradually raised in the form of stair-stepping from outside to inside.It is alternative
Ground, the light receiving surface of the heat-radiating substrate is gradually recessed gradually raised again in the form of stair-stepping from outside to inside, so that institute
Heat-radiating substrate is stated with W-shaped cross section.Alternatively, the light receiving surface of the heat-radiating substrate is from outside to inside with stair-stepping
Gradually protrusion is gradually recessed again for form, so that the heat-radiating substrate has W-shaped cross section.
Preferably, the Wavelength converter includes multiple wavelength convert modules, and the multiple wavelength convert module
It is sequentially arranged from inside to outside according to the sequence of calorific value from small to large.
Preferably, the width of the wavelength convert module is equal to the width of the corresponding step surface of the hierarchic structure
Degree.
Preferably, the width of each step surface of the hierarchic structure of the heat-radiating substrate is identical or different
's.
Preferably, the non-light back side of the heat-radiating substrate is provided with radiating fin, the position of the radiating fin
It is corresponding with the position of the wavelength convert module.
Preferably, each mesa sidewall of the hierarchic structure of the heat-radiating substrate is provided with multiple heat release holes or additional
Radiating fin.
As described above, according to the present invention at least have the advantage that
1. cooling surface area is increased, so that the heat dissipation performance of Wavelength converter by the way that ladder-like heat-radiating substrate is arranged
It greatly improves；
2. the fluorescence of different colours is pointedly arranged by the different annular stepped portions in stair-stepping heat-radiating substrate
Bisque can be avoided influencing each other for the fever of different phosphor powder layers；
3. the phosphor powder layer of different colours is all set to concentric loop shape, the phosphor powder layer of each wave-length coverage is increased
Be irradiated with a laser the time, improve the luminous efficiency of device.
4. heat dissipation performance can be further increased preferably, by the way that radiating fin and heat release hole is extraly arranged.
5. preferably, by making discoid heat-radiating substrate that there is the central part of non-light receiving surface gradually recessed ladder
Structure is able to maintain the miniaturization of device.
It should be appreciated that beneficial effects of the present invention are not limited to said effect, and can be described herein any beneficial
Effect.
Detailed description of the invention
The a and b of Fig. 1 is the side view and top view for the structure for showing Wavelength converter in the prior art respectively；
Fig. 2 shows the side views of the Wavelength converter of embodiment according to the present invention；
Fig. 3 shows the top view of the Wavelength converter of embodiment according to the present invention；
Fig. 4 shows the side view of the variation example of the Wavelength converter of embodiment according to the present invention；
Fig. 5 shows the side view of the structural outline of Wavelength converter according to another embodiment of the present invention；
Fig. 6 shows the side view of the variation example of Wavelength converter according to another embodiment of the present invention；
Fig. 7 shows the side view of the variation example of Wavelength converter according to still another embodiment of the invention.
Specific embodiment
Each specific embodiment according to the present invention is described in detail next, with reference to attached drawing.It is emphasized that in attached drawing
All sizes are only illustrative and are not necessarily according to actual proportions diagram, because without limited.For example, should
Understand, illustrating the thickness of each component, shape, size etc. in Wavelength converter structure is not according to actual size and ratio
It exemplifies, merely to diagram is convenient.
Wavelength converter according to the present invention includes at least heat-radiating substrate and wavelength convert module.Further, further include
There is drive motor.Drive motor and wavelength convert module are separately positioned on the two sides of heat-radiating substrate.Drive Wavelength converter around
Center of circle rotation.For example, the center position in heat-radiating substrate can be set in drive motor.It is appreciated that being used in this field
The Wavelength converter of drive motor is also referred to as colour wheel, does not do detailed differentiation to this in the present invention, should be considered as being included in this hair
In bright.
Heat-radiating substrate
Heat-radiating substrate has disc-shape, and the radial cross-section of heat-radiating substrate has centrosymmetric step structure.It changes
Yan Zhi, heat-radiating substrate have multi-stage stairs face, and each step surface has annulus shape.Heat-radiating substrate for example can be ceramic base
Plate, metal substrate or ceramet electric hybrid board.Heat-radiating substrate carries wavelength convert module and as wavelength convert module
Radiator structure.Ceramic substrate is aluminum oxide substrate, sapphire substrate, aluminium nitride substrate, silicon nitride board, silicon carbide substrate or nitrogen
Change borosilicate substrate etc..The thermal conductivity of these ceramic materials is more than 80W/ (mK), and fusing point is substantially at 1000 DEG C or more, therefore
They can also be resistant to higher temperature while realizing heat conduction and heat radiation.Metal substrate includes such as copper base, copper alloy base
Plate, aluminum substrate.Ceramet electric hybrid board includes such as aluminium-aluminium nitride substrate.
Wavelength convert module
Wavelength convert module is directly or indirectly fixed on heat-radiating substrate, and quantity can be one or more.Each wavelength
Conversion module is arranged on the step surface of annular shapes at different levels of heat-radiating substrate, and also has corresponding annulus shape.Each wave
Long conversion module for example can have the multilayer laminate constructions including at least luminescent layer and diffusing reflection layer.For example, in heat-radiating substrate
On, it is sequentially laminated with diffusing reflection layer and luminescent layer.
Luminescent layer may include luminescent material and binder.Wherein luminescent material includes fluorescent powder, quantum dot etc., for inhaling
The light (for example, laser) with certain wavelength is received, the light of another wavelength is then emitted；Binder may include silica gel, resin
Equal organic binders, can also including glass etc. inorganic binders, can also include crystalline ceramics binder.Alternatively, it sends out
Photosphere can be fluorescence ceramics.The difference of luminescent material will lead to the difference of its absorption spectrum and emission spectrum in luminescent layer.It is right
In the different wave length conversion module of the light for issuing different wave length, different specific luminescent materials is needed.For example, for green
Section wavelength convert module, fluorescent material is chosen as green emitting phosphor, such as LuAG (Luetcium aluminum garnet) fluorescent powder；For yellow Duan Bo
Long conversion module, fluorescent material are chosen as yellow fluorescent powder, such as YAG (yttrium-aluminium-garnet) fluorescent powder；Red color segment wavelength is turned
Block is changed the mold, fluorescent material is chosen as red fluorescence powder.
Diffusing reflection layer is for example comprising scattering particles and binder.Scattering particles are in diffusing reflection layer with reflection function
Grain, and bonding agent is for bonding scattering particles to form diffusing reflection layer.Wherein scattering particles usually apparently for white powder/
Grain is salt, oxide or nitride powder, including such as aluminium oxide, titanium dioxide, aluminium nitride, magnesia, boron nitride, oxygen
The mixture for changing zinc, zirconium oxide, the ultrawhites monomer powders particle or at least two such as barium sulfate or more powder particle, for pair
Light is scattered/reflects.In addition, these scattering materials will not substantially absorb light, and property is stablized, will not be in height
The lower oxidation of temperature is decomposed.Binder may include the organic binders such as silica gel, resin, can also including glass etc. inorganic bonds
Agent.For organic binder, heating can be obtained diffusing reflection layer after directly mixing scattering particles with organic adhesive.For nothing
Machine binder, diffusing reflection layer can just be obtained by being sintered after needing with binder to mix scattering particles in proportion.
The wavelength convert function of luminescent layer cause itself generate heat, and no matter binder therein using silica gel/
The heat dissipation performance of resin, glass or ceramic particle, these materials is all bad.In the operating condition, the heat product in luminescent layer
It is tired to will lead to temperature rising, the activity of luminescent material is influenced, and then the luminous efficiency of luminescent layer is caused to decline.Therefore, diffusing reflection
Layer also acts as the effect that heat is transmitted to the heat-conducting piece of heat-radiating substrate from luminescent layer, and heat is enable to dissipate in time from heat-radiating substrate
Out, heat aggregation is not will form.
In Wavelength converter according to the present invention, since heat-radiating substrate has hierarchic structure, heat dissipation area is long-range
In the heat dissipation area of the flat circle plate-like heat-radiating substrate of same diameter, therefore there is more excellent heat dissipation performance.
In the prior art, each wavelength convert module is usually brushed on heat-radiating substrate as adjacent sector or circular arc
Shape.Therefore, when the calorific value in some wavelength convert module is big, the heat transferred out from the module also will affect adjacent its
The heat dissipation of its module.In Wavelength converter according to the present invention, each wavelength convert module is arranged with annulus shape in ladder
On the step surfaces at different levels of the heat-radiating substrate of shape.Therefore, it can reduce the biggish wavelength convert module of calorific value to adjacent other waves
The influence of long conversion module.In addition, when Wavelength converter (colour wheel) rotation, heat-radiating substrate be in the part of outer ring relative to
The linear velocity of heat eliminating medium (for example, air) is bigger, therefore has better heat dissipation performance.Therefore, in wave according to the present invention
In long conversion equipment, the setting position of each wavelength convert module can be determined according to the calorific value size of each wavelength convert module
It sets.For example, the fuel factor of luminescent layer is more obvious since the wavelength for issuing fluorescence is longer, therefore it can will issue more long wavelength's
The more outer ring position of heat-radiating substrate is arranged in the wavelength convert module of fluorescence, preferably dissipates to make whole device on the whole and have
Thermal effect.It in other words, can be by multiple wavelength convert modules according to its calorific value sequence from small to large successively cloth from inside to outside
It sets.
Further, since each wavelength convert module in Wavelength converter of the invention is disposed as annular shape, therefore
During it is rotated, it can arbitrarily be arranged and adjust the time that the light that is excited of each wavelength convert module irradiates as needed,
It which thereby enhances the utilization efficiency of exciting light and improves the light efficiency of whole device.Illustratively, by wavelength conversion efficiency most
In the case that the wavelength convert module that low (namely fuel factor is strongest) issues feux rouges is set to the position of outmost turns, a side
Face has bigger wavelength convert angle (that is, entire annulus) compared to the fan-shaped subsection setup mode of existing scheme, while most
Outer ring also has greater area of transition region, and it is glimmering to reduce unit area in the case where not reducing feux rouges Integral luminous power
The power of luminescent material reduces the calorific value of unit area fluorescent material, improves the luminous efficiency of unit area, reduces glimmering
The risk of luminescent material failure (thermal quenching), improves reliability；On the other hand, Wavelength converter outmost turns have higher line
Speed improves radiating efficiency, also reduces the risk of fluorescent material failure (thermal quenching), ensure that reliability.Similarly, other
The wavelength convert module of color is equally applicable.
Illustrate the specific embodiment of Wavelength converter according to the present invention below with reference to accompanying drawings.
First embodiment
Fig. 2 shows the side views of the Wavelength converter of first embodiment according to the present invention.Fig. 3 is shown according to this
The top view of the Wavelength converter of the first embodiment of invention.
It as shown in Figures 2 and 3, include heat-radiating substrate 10,20 and of drive motor according to the Wavelength converter of the present embodiment
Wavelength convert module 30.Heat-radiating substrate 10 is, for example, aluminium nitride substrate.The non-light of heat-radiating substrate 10 is arranged in drive motor 20
The center position on surface (also referred to as " back side "), wavelength convert module 30 be arranged in heat-radiating substrate 10 light receiving surface (
Referred to as " front ").The shape in disk form on the whole of heat-radiating substrate 10, and have front from outside to inside the gradually recessed and back side from
Gradually raised centrosymmetric hierarchic structure outside to inside.The platform of stair-stepping heat-radiating substrate 10 is arranged in wavelength convert module 30
On terrace, and there is corresponding annulus shape.Fig. 2 and Fig. 3 show the examples for being provided with 3 wavelength convert modules 30.Herein
In the case of, for example, outermost wavelength convert module 30 can be the red wavelength conversion module for issuing feux rouges, intermediate wavelength
Conversion module 30 can be the green wavelength conversion module for issuing green light, and it is blue that innermost wavelength convert module 30 can be sending
The blue wavelength conversion module of light.
It should be understood that the quantity and distributing order of wavelength convert module 30 are without being limited thereto, but can according to need
Any setting.For example, it is also possible to which the wavelength convert module of same color is arranged on different step surfaces.Although in addition, attached drawing
The width of each step surface of middle diagram is identical, but the width of each step surface and its wavelength convert module 30 being disposed thereon
Brushing width also can according to need any setting.In other words, the width of different step surfaces can be identical, can not also phase
Together, and corresponding, the width of different wave length conversion module can also be identical or different.In addition, such as institute in Fig. 2 and Fig. 3
Show, the setting width of wavelength convert module 30 is less than the width of the corresponding step surface of heat-radiating substrate 10, it is apparent that can also incite somebody to action
The setting width of wavelength convert module 30 is equal to the width of the corresponding step surface of heat-radiating substrate 10.In the case,
In the top view of Fig. 3, other than the step surface of innermost circle, the front of heat-radiating substrate 10 will be covered by each wavelength convert module 30
Lid.
Fig. 4 shows the variation example of the Wavelength converter of first embodiment according to the present invention.As shown in figure 4, dissipating
Radiating fin 40 is provided at the position opposite with wavelength convert module 30 at the back side of hot substrate 10.Radiating fin 40 is further
The contact area of heat-radiating substrate 10 Yu heat eliminating medium (for example, air) is increased, so as to improve radiating efficiency.
Second embodiment
Fig. 5 shows the side view of the Wavelength converter of second embodiment according to the present invention.According to the present embodiment
Wavelength converter includes heat-radiating substrate 11, drive motor 20 and wavelength convert module 30.In order to illustrate conveniently, only show in Fig. 5
Two wavelength convert modules 30 are gone out.According to the wavelength of the Wavelength converter of the present embodiment and first embodiment shown in Fig. 2
The difference of conversion equipment is: heat-radiating substrate 11 has light receiving surface (front) gradually raised and non-light receiving surface from outside to inside
(back side) gradually recessed centrosymmetric hierarchic structure from outside to inside.
Due to Wavelength converter need be arranged for drive rotate drive motor, and drive motor be generally arranged at it is scattered
The back side of hot substrate, therefore the integral thickness of Wavelength converter includes the thickness of drive motor.According to the present invention
It is whole since the back side of discoidal heat-radiating substrate 10 is gradually raised from outside to inside in the Wavelength converter of one embodiment
The thickness (that is, overall thickness on the left and right directions of Fig. 2) of a Wavelength converter is equal to the thickness and ladder of drive motor 20
The sum of step heights at different levels of heat-radiating substrate 10 of shape.Accordingly, with respect to the wavelength convert dress with plane disc heat-radiating substrate
It sets, the thickness of the Wavelength converter of first embodiment according to the present invention may increase.However, according to the present invention second
In the Wavelength converter of embodiment, since the back side of discoidal heat-radiating substrate 11 is gradually recessed from outside to inside, heat-radiating substrate
11 hierarchic structure takes full advantage of the installation space of drive motor 20, therefore the thickness of entire Wavelength converter is (that is, scheming
Overall thickness on 5 left and right directions) it is essentially identical with the thickness of the Wavelength converter with plane disc heat-radiating substrate.Change speech
It, the central part of the non-light receiving surface of heat-radiating substrate 11 forms recess portion due to inwardly concaving, and can will just have one
The drive motor 20 for determining thickness accommodates in this recess.It needs exist for illustrating again, it is clear in order to illustrate, in each attached drawing
In, the thickness of heat-radiating substrate, the thickness of wavelength convert module and drive motor is not to illustrate according to actual proportions.
In addition to the above described differences, it can have first embodiment according to the Wavelength converter of the second embodiment of the present invention
Wavelength converter above-mentioned various structures, function and variation.
For example, Fig. 6 shows the variation example of the Wavelength converter of second embodiment according to the present invention.As shown in fig. 6,
Radiating fin 40 is provided at the position opposite with wavelength convert module 30 at the back side of heat-radiating substrate 11.Radiating fin 40 into
One step increases the contact area of heat-radiating substrate 11 Yu heat eliminating medium (for example, air), so as to improve radiating efficiency.
3rd embodiment
Fig. 7 shows the side view of the Wavelength converter of third embodiment according to the present invention.According to the present embodiment
Wavelength converter includes heat-radiating substrate 12, drive motor 20 and wavelength convert module 30.In order to illustrate conveniently, only show in Fig. 7
Four wavelength convert modules 30 are gone out.As shown in fig. 7, in fact according to the Wavelength converter of the present embodiment and shown in fig. 6 second
The difference for applying the Wavelength converter of example is: heat-radiating substrate 12 have light receiving surface (front) from outside to inside gradually it is recessed again by
It is gradually raised, and non-light receiving surface (back side) gradually protrusion gradually recessed centrosymmetric hierarchic structure again from outside to inside.It changes
Yan Zhi, the heat-radiating substrate 12 in the present embodiment have W-shaped cross section.
In this embodiment, since heat-radiating substrate has W-shaped structure, the heat dissipation of heat-radiating substrate can be further increased
Area can obtain more good heat dissipation effect.
It should be understood that ground, in the present embodiment, heat-radiating substrate may be set to be with W-shaped structure shown in fig. 7 on the contrary,
That is, gradually protrusion is gradually recessed again from outside to inside for light receiving surface (front), and non-light receiving surface (back side) is from outside to inside gradually
Recessed gradually raised centrosymmetric hierarchic structure again.In addition, structure according to figure 7, those skilled in the art are obvious
Also it can according to need and set heat-radiating substrate to there are more ups and downs wavy hierarchic structures.
In addition, showing heat-radiating substrate 12 in Fig. 7 is provided with radiating fin 40.But it is to be understood that radiating fin 40
It is not required.It needs exist for illustrating again, it is clear in order to illustrate, in the drawings, heat-radiating substrate, wavelength convert module
Thickness and the thickness of drive motor be not illustrated according to actual proportions.
In addition to the above described differences, it can have previous embodiment according to the Wavelength converter of the third embodiment of the present invention
The same or similar various structures, function and variation.
Above with reference to the accompanying drawings of the specific embodiment of Wavelength converter according to the present invention, but it should reason
Solution, Wavelength converter of the invention is not limited to the above specific embodiments, but can have other modifications.For example,
In the Wavelength converter of first embodiment according to the present invention to 3rd embodiment, in the heat-radiating substrate with hierarchic structure
(in Fig. 2,4,5~7, heat-radiating substrate is along horizontal-extending for 10 to 12 mesa sidewall for being not provided with wavelength convert module 30
Part) multiple heat release holes can be equipped with and/or radiating fin is extraly set, to further increase the thermal diffusivity of heat-radiating substrate
Can, reduce influence of the fever of each wavelength convert module to adjacent wavelength convert module.For example, it is also possible to as needed, only
Making the light receiving surface of heat-radiating substrate has hierarchic structure, rather than light receiving surface is remained in same plane.In addition, in the present invention
Different embodiments disclosed in feature and structure can carry out various combinations under the premise of without prejudice to purport of the invention.
Although above with reference to the accompanying drawings of wavelength convert module according to the present invention, the present invention is not limited to
This, and it will be understood by those skilled in the art that the spirit or scope limited without departing from appended claim of the present invention the case where
Under, various changes, combination, secondary combination and modification can be made.
Claims (10)
1. a kind of Wavelength converter, comprising:
Heat-radiating substrate, the heat-radiating substrate shape in disk form；
At least one wavelength convert module, at least one described wavelength convert module are located at the light receiving surface of the heat-radiating substrate；
It is characterized in that, the heat-radiating substrate has centrosymmetric hierarchic structure, and at least one described wavelength convert mould
Block is arranged on the corresponding step surface of the hierarchic structure with annulus shape respectively.
2. Wavelength converter as described in claim 1, which is characterized in that the light receiving surface of the heat-radiating substrate is from outer
It is inwardly gradually recessed in the form of stair-stepping.
3. Wavelength converter as described in claim 1, which is characterized in that the light receiving surface of the heat-radiating substrate is from outer
It is inwardly gradually raised in the form of stair-stepping.
4. Wavelength converter as described in claim 1, which is characterized in that the light receiving surface of the heat-radiating substrate is from outer
It is inwardly gradually recessed gradually raised again in the form of stair-stepping, so that the heat-radiating substrate has W-shaped cross section；
Alternatively, gradually protrusion is gradually recessed again in the form of stair-stepping from outside to inside for the light receiving surface of the heat-radiating substrate,
So that the heat-radiating substrate has W-shaped cross section.
5. Wavelength converter according to any one of claims 1 to 4, which is characterized in that the Wavelength converter is also
Including drive motor, the drive motor is located in the non-light receiving surface opposite with the light receiving surface of the heat-radiating substrate
At heart position, the drive motor drives the Wavelength converter to rotate around center.
6. Wavelength converter according to any one of claims 1 to 4, which is characterized in that the Wavelength converter packet
Include multiple wavelength convert modules, and the multiple wavelength convert module according to calorific value sequence from small to large from inside to outside according to
Secondary arrangement.
7. Wavelength converter according to any one of claims 1 to 4, which is characterized in that the wavelength convert module
Width is equal to the width of the corresponding step surface of the hierarchic structure.
8. Wavelength converter according to any one of claims 1 to 4, which is characterized in that the heat-radiating substrate it is described
The width of each step surface of hierarchic structure is same or different.
9. Wavelength converter according to any one of claims 1 to 4, which is characterized in that the heat-radiating substrate it is described
The non-light back side is provided with radiating fin, and the position of the radiating fin is corresponding with the position of the wavelength convert module.
10. Wavelength converter according to any one of claims 1 to 4, which is characterized in that the heat-radiating substrate it is described
Each mesa sidewall of hierarchic structure is provided with multiple heat release holes and/or extra heat dissipation fin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122267.6A CN110119058A (en) | 2018-02-07 | 2018-02-07 | Wavelength converter |
| PCT/CN2018/094729 WO2019153638A1 (en) | 2018-02-07 | 2018-07-06 | Wavelength conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122267.6A CN110119058A (en) | 2018-02-07 | 2018-02-07 | Wavelength converter |
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| CN110119058A true CN110119058A (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810122267.6A Pending CN110119058A (en) | 2018-02-07 | 2018-02-07 | Wavelength converter |
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| WO (1) | WO2019153638A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110989279A (en) * | 2019-12-24 | 2020-04-10 | 无锡视美乐激光显示科技有限公司 | Wavelength conversion device and laser projection equipment |
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| WO2019153638A1 (en) | 2019-08-15 |
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Application publication date: 20190813 |