CN105301881B - Light-emitting device and projection display equipment - Google Patents
Light-emitting device and projection display equipment Download PDFInfo
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- CN105301881B CN105301881B CN201510654455.XA CN201510654455A CN105301881B CN 105301881 B CN105301881 B CN 105301881B CN 201510654455 A CN201510654455 A CN 201510654455A CN 105301881 B CN105301881 B CN 105301881B
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Abstract
A kind of light-emitting device and projection display equipment, including lasing light emitter and optical system are proposed, optical system is made up of at least one optical element, for the laser for guiding lasing light emitter to send；Also include the first shell, first shell is assembled by least two first casing assemblies, for lasing light emitter and optical system to be enclosed in inside it；Also include second housing, it surrounds closing space jointly with the shell of part first, by the joint sealing between the first casing assembly inside it.Lasing light emitter and optical system are by the first shell seal, and the seam on the first shell is closed by second housing, and this is equivalent to optical system and has been closed twice, then dust is from the extraneous probability for entering optical system just in the decline of several orders of magnitude.Experiment also demonstrates that the light source so manufactured, its brightness decay is very slow, and service life is greatly prolonged.
Description
Technical field
The present invention relates to LASER Light Source field, more particularly to light-emitting device and the Projection Display dress using the light-emitting device
Put.
Background technology
At present, the fluorescent material rotating disk that laser excitation is rotated produces the fluorescence of timesharing, and this method is by relatively more extensive
Applied in Projection Display industry.This scheme, can because using all solid state luminescent material, therefore service life is very high in theory
To reach tens thousand of hours.But actual situation is, quickly, actual life is only for the light-source brightness decay of this method manufacture
For thousands of hours, real long-life light source product scheme does not occur all the time.
The content of the invention
In order to solve the problems, such as the service life of above-mentioned LASER Light Source, the present invention proposes a kind of light-emitting device, including lasing light emitter
And optical system, optical system is made up of at least one optical element, for the laser for guiding lasing light emitter to send；Also include first
Shell, first shell is assembled by least two first casing assemblies, for lasing light emitter and optical system to be enclosed in into it
It is internal；Also include second housing, it surrounds closing space jointly with the shell of part first, the seam between the first casing assembly is sealed
Close inside it.
The present invention also proposes that a kind of projection display equipment, including above-mentioned light-emitting device are used as light source.
Lasing light emitter and optical system are by the first shell seal, and the seam on the first shell is closed by second housing, this
It is equivalent to optical system to be closed twice, then dust is from the extraneous probability for entering optical system just in several orders of magnitude
Decline.Experiment also demonstrates that the light source so manufactured, its brightness decay is very slow, and service life is greatly prolonged.
Brief description of the drawings
Fig. 1 is the structural representation of the first embodiment of the light-emitting device of the present invention；
Fig. 2 is the structural representation of another embodiment of the light-emitting device of the present invention；
Fig. 3 is the structural representation of another embodiment of the light-emitting device of the present invention；
Fig. 4 A are the structural representations of another embodiment of the light-emitting device of the present invention；
Fig. 4 B are the formal figures of Fig. 4 A embodiments medium wavelength conversion rotating disk and fin；
Fig. 5 is the structural representation of another embodiment of the light-emitting device of the present invention.
Embodiment
Studied repeatedly by inventor, the fast main cause of LASER Light Source brightness decay is that dust enters light source internal light
Lu Zhong, in the presence of light laser being adsorbed in optical element surface causes brightness decay.As dust constantly enters and is adsorbed in
Optical element surface, brightness can constantly decay.
In order to solve this problem, inventor attempts to get up the body seal of light source, but low effort, and reason is light
The shell in source has multiple parts to be spliced, and is difficult to accomplish airtight each other, therefore is difficult to stop that short grained dust enters
Inside the light path of light source.Moreover, using the materials such as adhesive tape, adhesive tape between multiple parts in order to increase air-tightness, tieing up after sale
It can be caused when repairing than the larger proportion of goods damageds, virtually add cost.
Finally, inventor have found solution, as described below.
The present invention proposes a kind of light-emitting device, and the structural representation of its first embodiment is as shown in Figure 1.The light-emitting device bag
Lasing light emitter 105 and optical system are included, optical system is made up of light splitting optical filter 107 and condenser lens 101, for guiding lasing light emitter
105 laser 131 sent.Light-emitting device also includes the first shell 103, and first shell 103 is by least two first shell groups
Part 1031 and 1032 is assembled, for lasing light emitter and optical system to be enclosed in inside it.What deserves to be explained is, in other realities
Apply in example, if not drawing the first casing assembly especially, do not illustrate without the first casing assembly, but do not have in explanation
Necessity is particularly pointed out.In addition in Fig. 1, have obvious space between two the first casing assemblies 1031 and 1032, this be in order to
The specially treated conveniently done is represented in figure, both are close assembled in practice.
What deserves to be explained is, " closing " is used for multiple times in the description of various embodiments of the present invention, it is represented using conventional
Method other objects are enclosed in inside it, and the flowing of unobstructed gas or liquid can not be carried out between the external world.Example
Such as a complete shell is assembled into using two casing assemblies to be enclosed in inside it other objects, refer to two shells
Component is fully engaged against in design, and surface does not have obvious hole or space after assembly.In actual assembled, even if due to adding
The factor such as work error, material be rough so that gas or liquid can be penetrated into or be oozed out by assembled seam, due to the external world
Between can not carry out unobstructed circulation, this complete assembled body is also closing.
Light-emitting device also includes second housing 104, and it surrounds closing space jointly with the first shell of part 103, by first
Joint sealing between casing assembly 1031 and 1032 is inside it.In the present embodiment, lasing light emitter is installed on the first casing assembly
On 1031 inwall, the first outer surface of outer cover of the neighbouring installation site of lasing light emitter 105 is lasing light emitter radiating area 103a, the lasing light emitter
Radiating area is close to the backboard of lasing light emitter 105, and radiating effect is optimal.As shown in figure 1, the casing assembly of second housing 104 and first
1031 part enclosure is brought into close contact（Sticking part is as shown in the dashed circle of both sides about 105 such as lasing light emitter in Fig. 1）, by laser
Source heat-dissipating area 103a is exposed to outside second housing, and the remainder of the shell 103 of second housing 104 and first surrounds envelope jointly
Space is closed, by the joint sealing between the first casing assembly 1031 and 1032 inside it.
In the present embodiment, in addition to the Wavelength converter 102 inside the first shell 103, for receiving laser
131 and launch Stimulated Light 132.Wavelength converter is exactly wavelength conversion layer 102 in the present embodiment.Laser 131 transmits light splitting
Focus on, be then incident on wavelength conversion layer 102 by collector lens 101 after optical filter 107, wavelength conversion layer 102 is excited simultaneously
Launch Stimulated Light 132, Stimulated Light 132 is collected and collimated by collector lens 101, after the reflection of light splitting optical filter 107, successively thoroughly
Cross outgoing after the light-emitting window 104b on light-emitting window 103b and second housing on the first shell 103.Light splitting optical filter 107 can be right
The light of different wave length reflects and transmitted the purpose for having reached and having distinguished laser and Stimulated Light light path respectively.
In the present embodiment, lasing light emitter, optical system and Wavelength converter be by the first shell seal, and on the first shell
The first casing assembly seam again closed by second housing, extraneous dust can not be directly from the seam between the first casing assembly
Into optical system, this is equivalent to optical system and has been closed twice, then dust is from extraneous into the probability of optical system
It is in just the decline of several orders of magnitude.Experiment also demonstrates that the light source so manufactured, its brightness decay is very slow, and service life is significantly
Extension.
In addition, second housing is not to all partially enclosed of the first shell, this is relative to second housing completely by first
Shell seal saves material for its inside, reduces cost.And in the present embodiment, lasing light emitter radiating area 103a is sudden and violent
It is exposed at outside the closing space that second housing 104 is surrounded jointly with the shell of part first, such lasing light emitter radiating area 103a can
Contacted with direct with extraneous heat abstractor, radiating effect is preferable.
In the present embodiment, the first shell and second housing are fixedly linked, and are so conducive to assembling product and heat
Shed.It is preferred that, the first shell and second housing work in-process are integrally formed.This preferred scheme is equally applicable to down certainly
The embodiment in face.
In the embodiment shown in fig. 1, lasing light emitter radiating area is surrounded jointly exposed to second housing with the shell of part first
Closing space outside.In actual applications, it is also possible to there are other selections, the i.e. other parts of the first shell to be exposed to
Outside the closing space that second housing is surrounded jointly with the shell of part first, as long as second housing encloses jointly with the shell of part first
Into closing space, by the joint sealing between the first casing assembly inside it, it is possible to reach foregoing increase the service life
Beneficial effect.Another situation just for example has been illustrated in another embodiment shown in Fig. 2.
In the light-emitting device shown in Fig. 2, the first shell 203 is assembled by the first casing assembly 2031 and 2032.With
Unlike light-emitting device shown in Fig. 1, the part enclosure of second housing 204 and the first casing assembly 2032 is brought into close contact（Patch
It is shown in the dashed circle of both sides above and below conjunction portion such as Fig. 2 medium wavelength conversion layers）.Likewise, outside second housing 204 and part first
Shell 203 surrounds closing space jointly, by the joint sealing between the first casing assembly inside it, and the first shell close to wavelength
The part enclosure of conversion layer 202（That is the Wavelength converter radiating area of the first outer surface of outer cover）Outside the closing space
Portion, such heat being advantageous in that produced by wavelength conversion layer 202 can be dissipated directly by outside heat abstractor.And
In the present embodiment, the lasing light emitter radiating area 203 corresponding to lasing light emitter 205 needs to be in close contact with second housing, so as to pass through
The housing of second housing exports to the external world.
It is appreciated that we are it is of course possible to combining the embodiment shown in Fig. 1 and Fig. 2 so that lasing light emitter radiating area
It is exposed to simultaneously outside second housing with Wavelength converter radiating area, i.e. the remainder of second housing and the first shell is common
A closing space is constituted, by the joint sealing between the first casing assembly inside it.The heat of two such radiating area all may be used
Directly to be guided by external radiating device.It is appreciated that for the higher region of any heat ratio on the first shell, Huo Zheyin
The region for needing to be exposed to outside second housing for certain reason, as long as these regions do not include the seam between casing assembly, all
It can be exposed in design outside the close range of second housing.
In the embodiment above, Wavelength converter is located at the inside of the first shell, and depends on the inwall of the first shell
On, the heat produced by such Wavelength converter can pass to the effect that the first shell has reached radiating.Of the invention another
In one embodiment, Wavelength converter is then located at outside the first shell, inside second housing.
As shown in figure 3, the present embodiment and the difference of the embodiment shown in Fig. 1 are, the first shell 303 also goes out including laser
Optical port 303c, laser focused on through collector lens after from Laser output mouthful 303c outgoing.Wavelength converter 302 is wavelength convert
Layer, it is located at the inside of second housing 304, for receiving the laser 211 from Laser output mouthful outgoing and launching Stimulated Light 212.
The present embodiment is identical with the operation principle of the embodiment shown in Fig. 1, the difference is that the position of wavelength conversion layer.Likewise, at this
In embodiment, optical system is enclosed twice by the first shell and second housing, and the probability that dust enters is very low.
The structural representation of another embodiment of the light-emitting device of the present invention is as shown in Figure 4 A.With the implementation shown in Fig. 3
Unlike example, the driving that Wavelength converter 402 includes wavelength convert sabot 402a and drives the wavelength convert rotating disk to rotate
Device 402c.Include fin 402d on wavelength convert rotating disk 402a, for producing centrifugation when wavelength convert rotating disk 402a is rotated
Air-flow 491.Also include the wavelength conversion layer 402b of circle distribution on wavelength convert rotating disk 402a, wavelength conversion layer 402b is gathered
Launch Stimulated Light after burnt laser excitation.Because wavelength convert rotating disk 402a is to rotate, on such wavelength conversion layer 402b
Each point is periodically irradiated by laser to be excited, and this is conducive to the diffusion of wavelength conversion layer amount of localized heat.
The front view of wavelength convert rotating disk and the fin on it is as shown in Figure 4 B.It can be seen that, fin 402d along the circumferential direction divides
Cloth is simultaneously in centrifugation divergent shape extension, it will be understood that can be when wavelength convert rotating disk is rotated as the principle of centrifugal fan
The air-flow 491 of centrifugation is produced between fin 402d.The air-flow of the centrifugation can take away the heat on wavelength convert rotating disk, be reached for ripple
The effect of long conversion layer 402b coolings.Of course for the air-flow for producing centrifugation, fin 402d design can also be other forms,
This belongs to prior art and not repeated herein.
In the present embodiment, at least part inwall of the second housing 404 flowed through in air-flow 491, including fluctuating
Shape or fin 409 are to increase its surface area.So, heat entrained on air-flow 491 just can more fully pass to the
Heat inside two shells 404, such second housing can just be transmitted to second housing surface and outside.Make in the present embodiment
Fin 409 can by other shapes rise and fall replace, such as bar shaped or point-like it is raised or sunken, increasing can be reached
The effect on big this internal partial wall surface of second housing.Even if certainly without fin 409, the heat on air-flow 491 can also part
Pass to second housing.
It is preferred that, in the present embodiment, the region flowed through in air-flow 491, in addition to porous material.Porous material can be with
Dust in adsorption gas flow so that most of dust entered inside second housing is adsorbed on the porous material, into first
The probability of the optical system of enclosure is further reduced.Porous material can be metal polyporous material, can also so rise
To the effect of conduction heat.Certainly, porous material can also be used in combination with the fin in Fig. 4 A or the shape of fluctuating 409.
In the embodiment above, Stimulated Light is along the direction opposite direction outgoing of laser light incident.In the hair of the present invention
In another embodiment of electro-optical device, as shown in figure 5, from unlike the embodiment shown in Fig. 4 A, Wavelength converter 502 is wrapped
Transparent wavelength convert rotating disk 502a and wavelength conversion layer 502b thereon is included, wavelength conversion layer 502b is produced after laser excitation
Raw Stimulated Light 532 can continue to propagate along the direction of laser.Second housing 504 also includes light-emitting window 504b, and Stimulated Light 532 is just
Light-emitting window 504b outgoing can be passed through.Light-emitting window 504b is a lens, while emergent light is acted on, and can play closing
The effect of second housing.In the present embodiment, optical system only includes condenser lens 501, it is seen that optical system can at least be wrapped
Include an optical element.In addition, from unlike the embodiment shown in Fig. 4 A, the wavelength convert rotating disk 502a in Fig. 5 does not have
Fin because fin it is not necessary to, when the heat that wavelength conversion layer is sent is less high, can wavelength convert turn
Disk loses in rotating.
More than it can be seen from the explanation of multiple embodiments in the present invention, the light inlet of the first shell and second housing
There are a variety of possibilities and combination with light-emitting window, those skilled in the art can be according to actual conditions designed, designed.
More than in the explanation of multiple embodiments, there is no special explanation to light inlet and light-emitting window, illustrate in this together
Once.In actual applications, light inlet and light-emitting window can be an openings, then be closed using transparent cover plate.This
When cover plate just can be regarded as one and be used for assembled casing assembly.In addition, for example in the embodiment shown in fig. 5, outside second
Shell has just used lens 504b as light-emitting window, at this moment lens 504b just regard as one be used for assembly casing assembly, it is ensured that
The closure of shell.Still further it is possible that the first shell and/or second housing are made by transparent material, now
The light-emitting window or light inlet that especially need not be reserved or process, it is not required that special cover plate, the place that light is passed through is exactly into light
Mouth or light-emitting window.Therefore, in the present invention, light inlet or light-emitting window, which are referred to, can guide light incident or outgoing, while not
Influence the light-path of the first shell and second housing closure.
In multiple embodiments of above light-emitting device, all include Wavelength converter, because in LASER Light Source
Medium wavelength conversion equipment is in daily use, but it is necessary for the present invention that this, which does not represent Wavelength converter,.Even if without wavelength
Conversion equipment, or Wavelength converter still can be very good to protect in the outside of second housing, the first shell and second housing
Optical system is protected not by the absorption of extraneous dust to keep high efficiency.
The present invention also proposes that a kind of projection display equipment, including above-mentioned light-emitting device are used as light source.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of light-emitting device, it is characterised in that：
Including lasing light emitter and optical system, optical system is made up of at least one optical element, is sent for guiding lasing light emitter
Laser；
Also include the first shell, first shell is assembled by least two first casing assemblies, for by lasing light emitter and light
System lock is learned inside it；
Also include second housing, it surrounds closing space jointly with the shell of part first, the seam between the first casing assembly is sealed
Close inside it.
2. light-emitting device according to claim 1, it is characterised in that first outer surface of outer cover includes laser source heat-dissipating
Outside area, the closing space that the lasing light emitter radiating area is surrounded jointly exposed to second housing and the shell of part first.
3. light-emitting device according to claim 1, it is characterised in that also including the wavelength convert positioned at the first enclosure
Device, for receiving laser and launching Stimulated Light.
4. light-emitting device according to claim 3, it is characterised in that first outer surface of outer cover is filled including wavelength convert
Put radiating area, the closing space that the Wavelength converter radiating area is surrounded exposed to second housing and the shell of part first jointly it
Outside.
5. light-emitting device according to claim 1, it is characterised in that first shell also includes Laser output mouthful, swashs
Light is from Laser output mouthful outgoing；Also include being located at the Wavelength converter inside second housing, for receiving from the first shell
The laser of Laser output mouthful outgoing simultaneously launches Stimulated Light.
6. light-emitting device according to claim 5, it is characterised in that Wavelength converter includes wavelength convert rotating disk and drive
Move the drive device that the wavelength convert rotating disk is rotated；Include fin on wavelength convert rotating disk, for being rotated when wavelength convert rotating disk
When produce centrifugation air-flow.
7. light-emitting device according to claim 6, it is characterised in that the second housing flowed through in the air-flow is at least
On internal partial wall, including the shape or fin of fluctuating are to increase its surface area.
8. the light-emitting device according to claim 6 or 7, it is characterised in that the region flowed through in the air-flow, in addition to
Porous material.
9. light-emitting device according to claim 1, it is characterised in that first shell and second housing are integrally formed.
10. a kind of projection display equipment, it is characterised in that including light-emitting device according to any one of claim 1 to 9
It is used as light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654455.XA CN105301881B (en) | 2015-10-12 | 2015-10-12 | Light-emitting device and projection display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654455.XA CN105301881B (en) | 2015-10-12 | 2015-10-12 | Light-emitting device and projection display equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105301881A CN105301881A (en) | 2016-02-03 |
| CN105301881B true CN105301881B (en) | 2017-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510654455.XA Active CN105301881B (en) | 2015-10-12 | 2015-10-12 | Light-emitting device and projection display equipment |
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| CN (1) | CN105301881B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884852A (en) * | 2019-03-29 | 2019-06-14 | 苏州佳世达光电有限公司 | Light source module and projection arrangement |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100495201C (en) * | 2005-11-24 | 2009-06-03 | 台达电子工业股份有限公司 | Lamp assembly of projecting apparatus |
| EP2363055A1 (en) * | 2010-03-01 | 2011-09-07 | Electrolux Home Products Corporation N.V. | Projector and household appliance comprising such a projector |
| CN108646508B (en) * | 2012-12-20 | 2021-06-08 | 深圳光峰科技股份有限公司 | Light emitting device and related projection system |
| JP2014174221A (en) * | 2013-03-06 | 2014-09-22 | Nippon Seiki Co Ltd | Light source device |
| CN103645596A (en) * | 2013-12-18 | 2014-03-19 | 吴震 | Light emitting device and projection displaying system |
| CN104614926A (en) * | 2014-10-28 | 2015-05-13 | 扬州吉新光电有限公司 | Wavelength conversion device with a cooling structure baseplate and light emitting device |
| CN205281103U (en) * | 2015-10-12 | 2016-06-01 | 杨毅 | Light -emitting device and projection display device |
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Inventor after: Li Dongxue Inventor after: Yang Yi Inventor before: Yang Yi |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190412 Address after: 214100 Family Family Men 22-903, Binhu District, Wuxi City, Jiangsu Province Patentee after: Li Dongxue Address before: 201203 801, No. 12, 49 Lane, Bibo Road, Pudong New Area, Shanghai Patentee before: Yang Yi |