CN105301881A - Light emitting device and projection display device - Google Patents
Light emitting device and projection display device Download PDFInfo
- Publication number
- CN105301881A CN105301881A CN201510654455.XA CN201510654455A CN105301881A CN 105301881 A CN105301881 A CN 105301881A CN 201510654455 A CN201510654455 A CN 201510654455A CN 105301881 A CN105301881 A CN 105301881A
- Authority
- CN
- China
- Prior art keywords
- light
- housing
- emitting device
- shell
- optical system
- 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.)
- Granted
Links
Landscapes
- Semiconductor Lasers (AREA)
Abstract
The invention provides a light emitting device and a projection display device. The light emitting device comprises a laser source and an optical system. The optical system is composed of at least one optical element and is used for guiding laser which is emitted from the laser source. The light emitting device further comprises the components of a first housing which is obtained through splicing at least two housing assemblies and is used for closing the laser source and the optical system at the inner part; and a second housing which forms a closed space together with partial first housing, thereby closing the seam between the first housing assemblies in the second housing. The laser source and the optical system are closed by the first housing, and the seams on the first housing are closed by the second housing. Namely the optical system is closed twice. Therefore possibility of dust entering into the optical system from outside is reduced by several orders of magnitude. Experiments prove a fact that a light source which is manufactured according to the invention has advantages of low brightness attenuation speed and greatly prolonged service life.
Description
Technical field
The present invention relates to LASER Light Source field, particularly relate to the projection display equipment of light-emitting device and this light-emitting device of use.
Background technology
At present, the fluorescent powder rotating disk that laser excitation is rotated produces the fluorescence of timesharing, and this method has been compared to be widely used in Projection Display industry.This scheme due to use all solid state luminescent material therefore in theory serviceable life very high, can tens thousand of hours be reached.But the situation of reality is, the light-source brightness decay that this method manufactures is very fast, and actual life is only thousands of hours, and real long-life light source product scheme does not occur all the time.
Summary of the invention
In order to solve the problem in serviceable life of above-mentioned LASER Light Source, the present invention proposes a kind of light-emitting device, comprises lasing light emitter and optical system, and optical system is made up of at least one optical element, the laser sent for guiding lasing light emitter; Also comprise the first shell, this first shell is assembled by least two the first casing assemblies, for lasing light emitter and optical system being closed therein; Also comprise second housing, it and part first shell surround enclosure space jointly, by the joint sealing between the first casing assembly therein.
The present invention also proposes a kind of projection display equipment, comprises above-mentioned light-emitting device 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, and this is just equivalent to optical system and has been closed twice, and so dust enters the decline of probability just in several order of magnitude of optical system from the external world.Experiment also proves, the light source manufactured like this, slowly, serviceable life extends greatly in its brightness decay.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of light-emitting device of the present invention;
Fig. 2 is the structural representation of another embodiment of light-emitting device of the present invention;
Fig. 3 is the structural representation of another embodiment of light-emitting device of the present invention;
Fig. 4 A is the structural representation of another embodiment of light-emitting device of the present invention;
Fig. 4 B is the formal figure of Fig. 4 A embodiment medium wavelength conversion rotating disk and fin;
Fig. 5 is the structural representation of another embodiment of light-emitting device of the present invention.
Embodiment
Repeatedly study through inventor, the main cause that LASER Light Source brightness decay is fast is that dust enters in light source internal light path, is adsorbed in optical element surface and causes brightness decay under the effect of light laser.Constantly enter along with dust and be adsorbed in optical element surface, brightness can constantly decay.
In order to address this problem, inventor attempts the body seal of light source to get up, but low effort, and reason is that the shell of light source has multiple parts to be spliced, be difficult to accomplish airtight each other, be therefore difficult to stop that short grained dust enters the light path of light source inner.And, using the material such as adhesive tape, adhesive tape to increase impermeability between multiple parts, the larger proportion of goods damageds can be caused when after-sales service, virtually adding 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 as shown in Figure 1.This light-emitting device comprises lasing light emitter 105 and optical system, and optical system is made up of light splitting optical filter 107 and condenser lens 101, the laser 131 sent for guiding lasing light emitter 105.Light-emitting device also comprises the first shell 103, and this first shell 103 is assembled by least two the first casing assemblies 1031 and 1032, for lasing light emitter and optical system being closed therein.What deserves to be explained is, in other embodiments, if do not draw the first casing assembly especially, do not illustrate there is no the first casing assembly, but there is no need to particularly point out in explanation.In addition in FIG, have obvious space between two the first casing assemblies 1031 and 1032, this is to represent the special processing conveniently done in figure, and both are closely assembled in practice.
What deserves to be explained is, in the description of various embodiments of the present invention, repeatedly use " closing ", it represents that the method for use routine is surrounded other object therein, and and can not carry out unobstructed gas or the flowing of liquid between the external world.Such as use two casing assemblies to be assembled into a complete shell other object is closed therein, refer to two casing assemblies and be engaged completely in design, assembled rear surface does not have obvious hole or space.In actual assembled, even if due to factors such as mismachining tolerance, material are rough, make gas or liquid to be infiltrated by assembled seam or ooze out, owing to can not carry out unobstructed circulation between the external world, this complete assembled body is also closed.
Light-emitting device also comprises second housing 104, and it and part first shell 103 surround enclosure space jointly, by the joint sealing between the first casing assembly 1031 and 1032 therein.In the present embodiment, lasing light emitter is installed on the inwall of the first casing assembly 1031, and the first outer surface of outer cover of contiguous lasing light emitter 105 installation site is lasing light emitter radiating area 103a, and the backboard of lasing light emitter 105 is close in this lasing light emitter radiating area, and radiating effect is best.As shown in Figure 1, the part enclosure of second housing 104 and the first casing assembly 1031 fits tightly (sticking part is as shown in the dashed circle of lasing light emitter in Fig. 1 about 105 both sides), lasing light emitter radiating area 103a is exposed to outside second housing, and the remainder of second housing 104 and the first shell 103 surrounds enclosure space jointly, by the joint sealing between the first casing assembly 1031 and 1032 therein.
In the present embodiment, also comprise the Wavelength converter 102 being positioned at the first shell 103 inside, for receiving laser 131 and launching Stimulated Light 132.Wavelength converter is exactly wavelength conversion layer 102 in the present embodiment.Focus on through collector lens 101 after laser 131 transmission light splitting optical filter 107, then be incident on wavelength conversion layer 102, wavelength conversion layer 102 is excited and is launched Stimulated Light 132, Stimulated Light 132 is collected by collector lens 101 and is collimated, after light splitting optical filter 107 reflects, successively through outgoing after the light-emitting window 103b on the first shell 103 and the light-emitting window 104b on second housing.Light splitting optical filter 107 can reflect respectively to the light of different wave length and transmission has reached the object distinguishing laser and Stimulated Light light path.
In the present embodiment, lasing light emitter, optical system and Wavelength converter are by the first shell seal, and the seam of the first casing assembly on the first shell is closed by second housing, extraneous dust directly can not enter optical system from the seam between the first casing assembly, this is just equivalent to optical system and has been closed twice, and so dust enters the decline of probability just in several order of magnitude of optical system from the external world.Experiment also proves, the light source manufactured like this, slowly, serviceable life extends greatly in its brightness decay.
In addition, all partially enclosed not to the first shell of second housing, this relative to second housing completely by the first shell seal therein save material, reduce cost.And in the present embodiment, lasing light emitter radiating area 103a is exposed to outside the enclosure space that second housing 104 and part first shell surround jointly, and such lasing light emitter radiating area 103a just can directly contact with the heat abstractor in the external world, and radiating effect is better.
In the present embodiment, the first shell and second housing are fixedly linked, and are conducive to shedding of assembling product and heat like this.Preferably, the first shell and second housing work in-process one-body molded.This preferred version is equally applicable to the following examples certainly.
In the embodiment shown in fig. 1, lasing light emitter radiating area is exposed to outside the enclosure space that second housing and part first shell surround jointly.In actual applications, other also may be had to select, namely the other parts of the first shell also can be exposed to outside the enclosure space that second housing and part first shell surround jointly, as long as second housing and part first shell surround enclosure space jointly, by the joint sealing between the first casing assembly therein, the aforesaid beneficial effect increased the service life can just be reached.Such as in another embodiment shown in Fig. 2, just illustrate another kind of situation.
In the light-emitting device shown in Fig. 2, the first shell 203 is assembled by the first casing assembly 2031 and 2032.With the light-emitting device shown in Fig. 1 unlike, the part enclosure of second housing 204 and the first casing assembly 2032 fits tightly (sticking part as in the dashed circle of the upper and lower both sides of Fig. 2 medium wavelength conversion layer shown in).Same, second housing 204 and part first shell 203 surround enclosure space jointly, by the joint sealing between the first casing assembly therein, and the part enclosure of next-door neighbour's wavelength conversion layer 202 of the first shell (i.e. the Wavelength converter radiating area of the first outer surface of outer cover) is exposed to this enclosure space outside, such benefit is that the heat that wavelength conversion layer 202 produces can directly be dissipated by outside heat abstractor.And in the present embodiment, the lasing light emitter radiating area 203 corresponding to lasing light emitter 205 needs and second housing close contact, thus export to the external world by the housing of second housing.
Be appreciated that, we can combine the embodiment shown in Fig. 1 and Fig. 2 certainly, lasing light emitter radiating area and Wavelength converter radiating area are exposed to outside second housing simultaneously, namely the remainder of second housing and the first shell forms an enclosure space jointly, by the joint sealing between the first casing assembly therein.The heat of such two radiating areas directly can be led away by external radiating device.Be appreciated that, for the region that heat any on the first shell is higher, or because certain reason needs the region that is exposed to outside second housing, as long as these regions do not comprise the seam between casing assembly, outside the close range that can be exposed to second housing when designing.
In the embodiment above, Wavelength converter is positioned at the inside of the first shell, and depends on the inwall of the first shell, and the heat that such Wavelength converter produces can pass to the effect that the first shell has reached heat radiation.In another embodiment, Wavelength converter is then positioned at outside the first shell, and second housing is inner.
As shown in Figure 3, the difference of the embodiment shown in the present embodiment and Fig. 1 is, the first shell 303 also comprises Laser output mouth 303c, laser through collector lens focus on after from Laser output mouth 303c outgoing.Wavelength converter 302 is wavelength conversion layers, and it is positioned at the inside of second housing 304, launches Stimulated Light 212 for the laser 211 that receives from the outgoing of Laser output mouth.The principle of work of the embodiment shown in the present embodiment with Fig. 1 is identical, unlike the position of wavelength conversion layer.Same, in the present 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 light-emitting device of the present invention as shown in Figure 4 A.Comprise wavelength convert sabot 402a with the embodiment shown in Fig. 3 unlike, Wavelength converter 402 and drive the drive unit 402c of this wavelength convert dial rotation.Wavelength convert rotating disk 402a comprises fin 402d, for producing centrifugal air-flow 491 when wavelength convert rotating disk 402a rotates.Wavelength convert rotating disk 402a also comprises the wavelength conversion layer 402b of circle distribution, after the laser excitation that wavelength conversion layer 402b is focused, launch Stimulated Light.Because wavelength convert rotating disk 402a rotates, each point on such wavelength conversion layer 402b is periodically irradiated by laser and excites, and this is conducive to the diffusion of wavelength conversion layer amount of localized heat.
The front elevation of wavelength convert rotating disk and the fin on it as shown in Figure 4 B.Visible, fin 402d along the circumferential direction distributes and is that centrifugal divergent shape extends, and is appreciated that and can produces centrifugal air-flow 491 between fin 402d when wavelength convert dial rotation as the principle of centrifugal fan.This centrifugal air-flow can take away the heat on wavelength convert rotating disk, is reached for the effect that wavelength conversion layer 402b lowers the temperature.Certainly in order to produce centrifugal air-flow, the design of fin 402d can also be other form, and this belongs to prior art and does not repeat herein.
In the present embodiment, at least part of inwall of the second housing 404 flowed through at air-flow 491, comprise the shape of fluctuating or fin 409 to increase its surface area.Like this, heat entrained on air-flow 491 just can pass to second housing 404 more fully, and it is surperficial and outside that the heat of such second housing inside just can be transmitted to second housing.The fin 409 used in the present embodiment can be risen and fallen by other shape and replace, and such as bar shaped or point-like raised or sunken, can reach the effect increasing this part inner wall surface of second housing.Certainly even without fin 409, the heat on air-flow 491 also partly can pass to second housing.
Preferably, in the present embodiment, in the region that air-flow 491 flows through, also porosint is comprised.Porosint can dust in adsorption gas flow, and make the dust great majority entering second housing inside be attracted on porosint, the probability entering the optical system of the first enclosure is further reduced.Porosint can be metal polyporous material, can also play the effect of heat conduction like this.Certainly, porosint also can be combined with the shape 409 of the fin in Fig. 4 A or fluctuating.
In the embodiment above, Stimulated Light is all the direction outgoing in the other direction along laser incidence.In another embodiment of light-emitting device of the present invention, as shown in Figure 5, with the embodiment shown in Fig. 4 A unlike, Wavelength converter 502 comprise transparent wavelength convert rotating disk 502a and the wavelength conversion layer 502b on it, wavelength conversion layer 502b by after laser excitation the Stimulated Light 532 that produces can continue to propagate along the direction of laser.Second housing 504 also comprises light-emitting window 504b, and Stimulated Light 532 just can through light-emitting window 504b outgoing.Light-emitting window 504b is lens, while acting on emergent light, can play the effect of closed second housing.In the present embodiment, optical system only includes condenser lens 501, and visible optical system at least can comprise an optical element.In addition, with the embodiment shown in Fig. 4 A unlike, the wavelength convert rotating disk 502a in Fig. 5 does not have fin, this is because fin is not necessary, when the heat that wavelength conversion layer sends is not too high, can lose in wavelength convert dial rotation.
As can be seen from the explanation of above multiple embodiment, in the present invention, the light inlet of the first shell and second housing and light-emitting window have multiple possibility and combination, and those skilled in the art can according to actual conditions designed, designed.
In the explanation of above multiple embodiment, special explanation be there is no to light inlet and light-emitting window, at this in the lump illustratively.In actual applications, light inlet and light-emitting window can be openings, then adopt transparent cover plate to close.Now cover plate just can be regarded as one for assembled casing assembly.In addition, such as in the embodiment shown in fig. 5, second housing just employs lens 504b as light-emitting window, and at this moment lens 504b just regards that one for assembled casing assembly as, ensures the closure of shell.Also have a kind of may, the first shell and/or second housing are made by transparent material, and now just do not need the light-emitting window reserving especially or process or light inlet, also do not need special cover plate, the place of light transmission is exactly light inlet or light-emitting window.Therefore, in the present invention, light inlet or light-emitting window refer to and can guide light incidence or outgoing, do not affect the light-path of the first shell and second housing closure simultaneously.
In multiple embodiments of above light-emitting device, all include Wavelength converter, this is because be in daily use at LASER Light Source medium wavelength conversion equipment, but this not represent Wavelength converter for the present invention be necessary.Even without Wavelength converter, or Wavelength converter is in the outside of second housing, and the first shell and second housing still can well protect optical system be not subject to the absorption of extraneous dust thus keep high-level efficiency.
The present invention also proposes a kind of projection display equipment, comprises above-mentioned light-emitting device as light source.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention 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 invention.
Claims (10)
1. a light-emitting device, is characterized in that:
Comprise lasing light emitter and optical system, optical system is made up of at least one optical element, the laser sent for guiding lasing light emitter;
Also comprise the first shell, this first shell is assembled by least two the first casing assemblies, for lasing light emitter and optical system being closed therein;
Also comprise second housing, it and part first shell surround enclosure space jointly, by the joint sealing between the first casing assembly therein.
2. light-emitting device according to claim 1, is characterized in that, described first outer surface of outer cover comprises lasing light emitter radiating area, and this lasing light emitter radiating area is exposed to outside the enclosure space that second housing and part first shell surround jointly.
3. light-emitting device according to claim 1, is characterized in that, also comprises the Wavelength converter being positioned at the first enclosure, for receiving laser and launching Stimulated Light.
4. light-emitting device according to claim 3, is characterized in that, described first outer surface of outer cover comprises Wavelength converter radiating area, and this Wavelength converter radiating area is exposed to outside the enclosure space that second housing and part first shell surround jointly.
5. light-emitting device according to claim 1, is characterized in that, described first shell also comprises Laser output mouth, and laser is from the outgoing of Laser output mouth; Also comprise the Wavelength converter being positioned at second housing inside, launch Stimulated Light for the laser that receives from the Laser output mouth outgoing of the first shell.
6. light-emitting device according to claim 5, is characterized in that, Wavelength converter comprises wavelength convert sabot and drives the drive unit of this wavelength convert dial rotation; Wavelength convert rotating disk comprises fin, for producing centrifugal air-flow when wavelength convert dial rotation.
7. light-emitting device according to claim 6, is characterized in that, at least part of inwall of the second housing flowed through at described air-flow, comprises the shape of fluctuating or fin to increase its surface area.
8. the light-emitting device according to claim 6 or 7, is characterized in that, in the region that described air-flow flows through, also comprises porosint.
9. light-emitting device according to claim 1, is characterized in that, described first shell and second housing one-body molded.
10. a projection display equipment, is characterized in that, comprises light-emitting device according to any one of claim 1 to 9 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 true CN105301881A (en) | 2016-02-03 |
| CN105301881B CN105301881B (en) | 2017-11-07 |
Family
ID=55199312
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105301881B (en) |
Cited By (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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971406A (en) * | 2005-11-24 | 2007-05-30 | 台达电子工业股份有限公司 | Lamp assembly of projecting apparatus |
| CN102791176A (en) * | 2010-03-01 | 2012-11-21 | 伊莱克斯家用产品股份有限公司 | Projector and household appliance comprising such a projector |
| CN103645596A (en) * | 2013-12-18 | 2014-03-19 | 吴震 | Light emitting device and projection displaying system |
| CN103885274A (en) * | 2012-12-20 | 2014-06-25 | 深圳市光峰光电技术有限公司 | Light emitting device and related projection system |
| JP2014174221A (en) * | 2013-03-06 | 2014-09-22 | Nippon Seiki Co Ltd | Light source device |
| 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 |
-
2015
- 2015-10-12 CN CN201510654455.XA patent/CN105301881B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971406A (en) * | 2005-11-24 | 2007-05-30 | 台达电子工业股份有限公司 | Lamp assembly of projecting apparatus |
| CN102791176A (en) * | 2010-03-01 | 2012-11-21 | 伊莱克斯家用产品股份有限公司 | Projector and household appliance comprising such a projector |
| CN103885274A (en) * | 2012-12-20 | 2014-06-25 | 深圳市光峰光电技术有限公司 | 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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105301881B (en) | 2017-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103807810B (en) | Wavelength converter and related lighting fixtures | |
| CN104375366B (en) | Light source device and image projecting apparatus having the same | |
| CN104676492A (en) | Wavelength conversion device and light-emitting device | |
| JP6423086B2 (en) | Concentrator for lighting device | |
| CN105068368B (en) | Light-emitting device, projection display equipment and light fixture | |
| CN110895378B (en) | Fluorescent wheel device, illumination device, and projection type image display device | |
| JP2015031759A (en) | Light source apparatus and optical engine | |
| CN205103489U (en) | Optical modulex , illuminator and projection display equipment | |
| CN204629367U (en) | Wavelength converter and light-emitting device | |
| CN105301881A (en) | Light emitting device and projection display device | |
| US9103526B2 (en) | Phosphor assembly with phosphor element and optical system | |
| CN205281103U (en) | Light -emitting device and projection display device | |
| CN101216155A (en) | Ultraviolet irradiation device | |
| JP3215709B2 (en) | Light irradiation device | |
| CN105301750A (en) | Optical module, light emitting device and projection display device | |
| CN205003433U (en) | Illuminator , projection display equipment and lamps and lanterns | |
| JPH0797444B2 (en) | Flat light source | |
| CN106154701B (en) | Laser light source's dustproof system and laser display system | |
| RU2611608C2 (en) | Method of optical processing device unused optical radiation energy recovery, recovery device and optical processing device | |
| CN102645714A (en) | Light source system and color wheel assembly of light source system | |
| CN105319824A (en) | Light-emitting device and projection display device | |
| CN112393135B (en) | High-illumination LED projection type light source | |
| US20230236349A1 (en) | 3d concentrator | |
| CN105068367B (en) | Light-emitting device, projection display equipment and light fixture | |
| CN219809826U (en) | Lighting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Dongxue Inventor after: Yang Yi Inventor before: Yang Yi |
|
| CB03 | Change of inventor or designer information | ||
| 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 |
|
| TR01 | Transfer of patent right |