CN203733828U - Light emitting diode packaging structure and light emitting device - Google Patents
Light emitting diode packaging structure and light emitting device Download PDFInfo
- Publication number
- CN203733828U CN203733828U CN201320834998.6U CN201320834998U CN203733828U CN 203733828 U CN203733828 U CN 203733828U CN 201320834998 U CN201320834998 U CN 201320834998U CN 203733828 U CN203733828 U CN 203733828U
- Authority
- CN
- China
- Prior art keywords
- light
- emitting diode
- reflector
- angle
- package structure
- 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.)
- Expired - Lifetime
Links
- 238000004806 packaging method and process Methods 0.000 title abstract 2
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Led Device Packages (AREA)
Abstract
The utility model provides a light emitting device and a light emitting diode packaging structure comprising a substrate and a light emitting diode fixedly disposed on the surface of the substrate. A reflective cover is disposed on the light emitting diode in a covered manner, and the inner wall of the reflective cover is a reflective surface, and the center is provided with a through hole. The light emitted by the light emitting diode having the outgoing angle smaller than the predetermined angle can be emitted directly through the through hole in the center of the reflective cover, and the light emitted by the light emitting diode having the outgoing angle greater than the predetermined angle is reflected to the light emitting angle by the inner wall of the reflective cover. According to the light emitting device, the reflective cover can be used to reflect the light having a certain angle, which cannot be used, to the light emitting diode, and after the reflection and the scattering of the light emitting diode, the angle of the above mentioned light can be changed, and then the light can be used, and therefore the light utilization efficiency can be improved effectively.
Description
Technical field
The utility model relates to light source field, particularly relates to a kind of package structure for LED and the light-emitting device with this package structure for LED of use.
Background technology
Rapidly, wherein light-emitting diode (LED) light source is widely used as a kind of novel light source in projection display technique in projection display technique development at present.But current subject matter is the luminance shortage of LED light source.For example, for the light valve of certain size, its optical extend is definite, and the quantity of LED has been defined, and the luminance shortage of single LEDs just has directly caused being incident in the luminous flux deficiency of light valve.Especially green LED, the especially bottleneck of whole LED light source system.
Summary of the invention
For above-mentioned problem, the utility model proposes a kind of package structure for LED, comprise substrate and the light-emitting diode that is fixed on substrate surface, also comprise the reflector covering on light-emitting diode, this reflector inwall is reflecting surface, there is through hole at Qie Qi center; The light that the angle of emergence in the light that light-emitting diode sends is less than special angle is able to the direct outgoing of central through hole from reflector, and the light that in the light that light-emitting diode sends, the angle of emergence is greater than special angle is incident in the inwall of reflector and is reflected back toward light-emitting diode.
The utility model also proposes a kind of light-emitting device, comprises above-mentioned package structure for LED.
The utility model also proposes a kind of light-emitting device, comprises redness, green and blue three kinds of LED source, and wherein the light source of at least one color has used above-mentioned package structure for LED.
In light-emitting device of the present utility model, utilize reflector that the light of the certain angle scope that originally can not be utilized is reflected back to light-emitting diode, thereby then be utilized the light utilization ratio effectively improving by the final angle that changes after LED reflection scattering.
Brief description of the drawings
Fig. 1 is the structural representation of the first embodiment of light-emitting device of the present utility model;
Fig. 2 is the structural representation of another embodiment of light-emitting device of the present utility model;
Fig. 3 is the structural representation of another embodiment of light-emitting device of the present utility model;
Fig. 4 is the structural representation of another embodiment of light-emitting device of the present utility model;
Fig. 5 is the structural representation of another embodiment of light-emitting device of the present utility model;
Fig. 6 is the structural representation of another embodiment of light-emitting device of the present utility model;
Fig. 7 is the structural representation of another embodiment of light-emitting device of the present utility model;
Fig. 8 is the structural representation of the embodiment of the encapsulating structure of light-emitting diode of the present utility model;
Fig. 9 is the structural representation of another embodiment of the encapsulating structure of light-emitting diode of the present utility model.
Embodiment
Fig. 1 is the structural representation of the light-emitting device of the utility model the first embodiment.This light-emitting device comprises light emitting source 101 and 102.Wherein 101 is light-emitting diode chip for backlight unit, and 102 for covering the wavelength conversion layer on light-emitting diode chip for backlight unit 101 surfaces, and the first light that light-emitting diode chip for backlight unit 101 sends can excite this wavelength conversion layer 102 to make its transmitting Stimulated Light.Stimulated Light is lambertian distribution, and lighting angle is that half-angle 90 is spent.In order to collect as far as possible many Stimulated Light, light-emitting device also comprises the light collecting device that is positioned at light emitting source light path rear end.In the present embodiment, light collecting device comprises that lens 103 and 104, two lens composition set of lenses of lens reach the object of the light of collecting light emitting source outgoing jointly.
In some specific occasion, optical extend is restricted, and therefore set of lenses only need to be collected the light within the scope of certain angle, and for example the light in half-angle 60 degree, is also difficult to be applied even if wide-angle light obtains being collected in rear end.In order to improve light collection efficiency, light-emitting device also comprises the reflection unit 105 between light emitting source and light collecting device light path, is reflected back light emitting source for the light that the angle of emergence of sending from light emitting source is greater than to 60 degree.For example, in Fig. 1, the angle of emergence of Stimulated Light 131 is less than 60 degree, therefore these light are able to directly be collected outgoing by lens 103 and 104, and the angle of emergence of Stimulated Light 132 is greater than 60 degree, these light are reflected device 105 and are reflected back wavelength conversion layer 102, and by wavelength conversion layer 102 scatterings and reflection, again with the form outgoing of lambert's light, the light that wherein some angle is less than 60 degree is again by lens 103 and 104 collection outgoing, other parts are again reflected device 105 and are reflected back wavelength conversion layer 102, so iterative cycles, major part in final Stimulated Light 132 is all able to be collected and outgoing by lens 103 and 104 under the scattering of wavelength conversion layer 102 and reflex.
By reflection unit 105 is set, the light that can not be collected utilization originally finally can be collected and use, this effectively raises the luminous efficiency of light-emitting device.
For realize by the light maximal efficiency of incident be reflected back wavelength conversion layer 102, the reflector shape of reflection unit 105 is the curved surface centered by light emitting source.For example its cross section can be the circle centered by light emitting source, and the wide part that light emitting source sends like this can be reflected back light emitting source.And in the time that light emitting source large scale is larger, the section optimal of the reflecting surface of reflection unit can be the ellipse taking two marginal points of light emitting source as two focuses, can be reflected back toward between these two marginal points with the interior light sending from two marginal points of light emitting source according to rim ray theory like this.Certainly in optical design, can also there is the skill of much reflector shape being optimized, not repeat herein.
Be appreciated that describe above in angle 60 degree just one for example, in fact also can be using other angle as the boundary of collecting and be reflected back wavelength conversion layer.Even, also can reflect the long conversion layer of low-angle optical echo and the light of wide-angle is collected and outgoing.In the same way, if the angular range of the light of light emitting source outgoing is A, the light that is B by angular range is wherein reflected back light emitting source, and angular range B, in angular range A, just can realize the beneficial effects of the utility model.
In the present embodiment, light emitting source is the light-emitting diode chip for backlight unit that surface coverage has wavelength conversion layer; In actual applications, also can only use light-emitting diode chip for backlight unit itself.The lighting angle of light-emitting diode chip for backlight unit own is also lambertian distribution, and in the time that its wide-angle light sending is reflected device and is reflected back light-emitting diode chip for backlight unit, these light that are reflected also can be by light-emitting diode chip for backlight unit scattering and reflection.Certainly, the light emitting source in the utility model is also not limited to use light-emitting diode, also can use other light source.For example, light emitting source can be a Wavelength converter, and this Wavelength converter comprises wavelength conversion layer; Also comprise excitaton source, the exciting light of this excitaton source transmitting is incident in the wavelength conversion layer of Wavelength converter and makes its transmitting Stimulated Light.In embodiment below, all there is the light-emitting diode chip for backlight unit of wavelength conversion layer to give an example as light emitting source by surface coverage, but also can use other light emitting sources in fact in these embodiments.
The structural representation of another embodiment of the present utility model as shown in Figure 2.Different from the light-emitting device shown in Fig. 1, the light-emitting device shown in Fig. 2 also comprises excitaton source 207, and excitaton source 207 is LASER Light Source 207 in the present embodiment.The exciting light 233 that LASER Light Source 207 is launched outgoing after collimating lens 208 collimations.After these exciting light 233 transmission light-dividing devices 206 and light collecting device, be incident in the wavelength conversion layer on light-emitting diode chip for backlight unit surface and make its transmitting Stimulated Light.If be appreciated that, the emergent light angle of excitaton source 207 is enough little, and collimating lens also can omit.
Light-dividing device 206 is for separately causing energy loss by the light path of Stimulated Light 231 and exciting light 233 to avoid Stimulated Light to be incident in excitaton source 207, therefore the characteristic of light-dividing device 206 is can transmission exciting light 233 and reflection Stimulated Light 231 in the present embodiment, light-dividing device 206 is light splitting filters 206 specifically, and the design of this light splitting filter 206 makes the spectral transmission of exciting light 233 and the spectral region reflection of Stimulated Light 231.In fact, this light splitting filter 206 also can be designed so that the spectral reflectance of exciting light 233 and the spectral transmission of Stimulated Light 231, after the position that can adjust like this excitaton source 207 makes exciting light 233 be incident in light splitting filter, be reflected and be incident in light emitting source, thereby and the light that light emitting source sends can separate with the light path of exciting light 233 by transmission light splitting filter 206.
In the present embodiment, use excitaton source 207, the exciting light 233 that excitaton source 207 sends can be from a side incident the excitation wavelength conversion layer of the backward luminous diode chip for backlight unit of wavelength conversion layer, therefore the two sides of wavelength conversion layer can be excited simultaneously, and luminous intensity is higher.
In the embodiment shown in Figure 2, light-dividing device uses light splitting filter, and in fact light-dividing device can also use other optical element, will be described in detail with two embodiment shown in Fig. 3 and Fig. 4 below.
In another embodiment shown in Fig. 3, different from the embodiment shown in Fig. 2 is, light-dividing device 306 is speculum with holes, be in speculum 306, to have a through hole 306a, the exciting light 333 that excitaton source 307 sends sees through through hole 306a and is incident in wavelength conversion layer, the Stimulated Light that wavelength conversion layer sends is incident in speculum 306 with holes, wherein major part is separated with the light path of exciting light 333 by the regional reflex around through hole 306a, only has sub-fraction Stimulated Light see through through hole 306a and cause loss.As long as the area of through hole 306a is relatively enough little, the energy of Stimulated Light that sees through through hole 306a is just very little.
In another embodiment shown in Fig. 4, different from the embodiment shown in Fig. 2 is, light-dividing device 406 is small reflector 406, be reflected and be incident in wavelength conversion layer by changing after thereby the position of excitaton source makes exciting light 433 be incident in small reflector 406, the Stimulated Light 431 of sending from wavelength conversion layer major part sees through from the surrounding of small reflector 406, only has sub-fraction Stimulated Light to be incident in small reflector and to form loss.Be appreciated that as long as the size of small reflector 406 is relatively enough little, little by the Stimulated Light of small reflector loss.
Embodiment shown in Fig. 3 and Fig. 4 changes light-dividing device on the basis of the embodiment of Fig. 2, in the following embodiments, still use the embodiment of Fig. 2 to improve as basis, but be appreciated that the light-dividing device in Fig. 3 and Fig. 4 obviously also can apply in the following embodiments.
In the embodiment shown in Fig. 2 to Fig. 4, excitaton source is LASER Light Source, is characterized in that the angle of divergence of luminous beam is little, is easy to collect, and therefore only uses a slice collimating lens.And in order to reduce costs, excitaton source also can use light-emitting diode chip for backlight unit, as shown in Figure 5.In the light-emitting device shown in Fig. 5, different from the light-emitting device of Fig. 2, excitaton source is the second light-emitting diode chip for backlight unit 507.The second light 533 that this second light-emitting diode chip for backlight unit 507 sends can excitation wavelength conversion layer 502 and is made its transmitting Stimulated Light 531.
Different from the laser-excitation source in Fig. 2, the lighting angle of the second light-emitting diode chip for backlight unit 507 is full-shape, and the light that therefore needs collecting lens 508 to send the second light-emitting diode chip for backlight unit 507 does as far as possible many collections, for example, collect its 80 degree with interior luminous.After the second light 533 transmission light-dividing devices after collection, after scioptics 504 and 503, be incident in wavelength conversion layer 502, in incident process, can not be reflected device 505 and block.If the light in the light that light emitting source sends in angular range B is reflected device reflection, in order to ensure that the second light 533 is not reflected device 505 and blocks, the optical extend of the second light 533 need to the lighting angle scope B of light emitting source outside the optical extend of light match, match with the optical extend of the Stimulated Light 531 of outgoing.
The angle of calculating from optical extend coupling, in the light that wavelength conversion layer 502 sends, only some angle is directly collected, and the collection angle of the second light-emitting diode chip for backlight unit 507 larger (design of light collecting system 503 and 504 also with the difference that is designed with of collecting lens 508), therefore the size of the second light-emitting diode chip for backlight unit 507 can be smaller than light-emitting diode chip for backlight unit 501, and such is most effective.Certainly this is situation about optimizing the most, in reality owing to being limited to the size of light-emitting diode chip for backlight unit ready-made on market, the size of the second light-emitting diode chip for backlight unit may not be optimized, the optical extend of the second light 533 of now its transmitting is just different from the Stimulated Light 531 of direct outgoing, may exist part the second light 533 to be incident in reflection unit 505 and cause the situation of loss.
In the above embodiments, all used the reflection unit between light emitting source and light collecting device light path.The reflection unit that can also use in actual applications other, is described in detail with Fig. 6 and Fig. 7 below.
In the light-emitting device shown in Fig. 6, reflection unit 605 is positioned at set of lenses inside, and, between lens 603 and lens 604, its reflecting surface cross section is plane mirror.The high angle scattered light 632 that the corresponding light in position in this plane mirror place light path is light emitting source, this part light be reflected after device 605 reflection can along original optical path reverse get back to light emitting source, be finally converted into 631 outgoing of low-angle light.
In the light-emitting device shown in Fig. 7, different from the light-emitting device of Fig. 6 is, reflection unit 705 is positioned at light collecting device light path rear end, its reflecting surface cross section is plane mirror, the high angle scattered light 732 that its corresponding light in position in light path is light emitting source, this part light be reflected after device 705 reflection can along original optical path reverse get back to light emitting source, be finally converted into 731 outgoing of low-angle light.
In the embodiment shown in Fig. 6 and Fig. 7, the position of reflection unit is different, and this can be according to actual conditions from preferably selecting.The shape in the reflecting surface cross section of reflection unit can be plane, can be also curved surface, and the former is relatively cheap and the latter's reflecting effect is relatively good.
The utility model also proposes a kind of projection display system, comprises light valve and above-mentioned light-emitting device, and wherein, light valve receives the light sending from light-emitting device and it is modulated and makes it carry image information.Wherein, the optical extend of the light being received by light collecting device of the light emitting source in light-emitting device and the optical extend of light valve mate.In whole system, the bottleneck that light valve is optical extend, therefore often total optical extend of the light emitting source in light-emitting device is larger.A method for application point invention, can extract the part matching with light valve optical extend in light emitting source, and other parts are reflected back to light emitting source by reflection unit carry out scattered reflection and recycling, thereby improve the utilization ratio of light.
The utility model also proposes a kind of encapsulating structure of light-emitting diode, as shown in Figure 8.In this package structure for LED,, comprise substrate 851 and the light-emitting diode that is fixed on substrate surface.Light-emitting diode is the light-emitting diode chip for backlight unit 801 that surface coverage has wavelength conversion layer 802 in the present embodiment, but in fact light-emitting diode can be also only light-emitting diode chip for backlight unit 801.In this package structure for LED, also comprise the reflector 805 covering on light-emitting diode, this reflector inwall 805a is reflecting surface 805a, and there is through hole 852 at Qie Qi center; The light that the angle of emergence in the light that light-emitting diode sends is less than special angle is able to the direct outgoing of central through hole 852 from reflector, and the light that in the light that light-emitting diode sends, the angle of emergence is greater than special angle is incident in the inwall 805a of reflector and is reflected back toward light-emitting diode.
For many light-emitting diodes that is reflected back that the light of incident is tried one's best, the reflecting surface of reflector need to design.Conventional is designed with two kinds, and the first is the part that the reflecting surface of reflector is sphere, and the centre of sphere of this sphere is at the luminescence center of light-emitting diode; The second be the transversal (being the curve shown in 805a in Fig. 8) of crossing axis of reflecting surface of reflector for an oval part, this ellipse is taking two end points 802a of light-emitting area of light-emitting diode and 802b as two oval focuses.
In the present embodiment, light-emitting diode chip for backlight unit 801 is to be electrically connected with the circuit on substrate by gold thread 801a.
Utilize the encapsulating structure of this light-emitting diode; can utilize reflector to protect light-emitting diode to avoid mechanical shock on the one hand; on the other hand; explanation in conjunction with embodiment is above appreciated that; this encapsulating structure can also play the light that the lighting angle that originally can not be utilized is greater than to special angle and is reflected back light-emitting diode and finally utilized through reflection and scattering, has improved light utilization ratio.
In the present embodiment, the bottom surface of reflector 805 is fixed on described substrate, the easiest in actual assembled like this.More practical, reference column is arranged at reflector bottom, has corresponding location hole on substrate, and the location hole that the reference column of reflector bottom inserts on substrate comes for reflector location.Such benefit is accurately to locate easily the position of reflector.
The encapsulating structure of the light-emitting diode shown in Fig. 9 is another embodiment, different from the embodiment shown in Fig. 8, also comprises the transparent window 903 on the central through hole that is fixed on reflector 905 in this embodiment.Specifically in the present embodiment, this transparent window 903 is lens 903, is less than the light of special angle for collecting the light angle of emergence that light-emitting diode sends.Can realize so the compactest entirety of lens package.In Fig. 9, lens 903 are biconvex lens, and this does not form restriction of the present utility model, can use in actual applications the lens of other kinds.Certainly in practical application, transparent window can be also clear glass plain film or transparent plastic plain film.
The utility model also proposes a kind of light-emitting device, comprises above-mentioned package structure for LED.
The utility model also proposes a kind of light-emitting device, comprises redness, green and blue three kinds of LED source, and wherein the light source of at least one color has used above-mentioned package structure for LED.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a package structure for LED, is characterized in that, comprises substrate and the light-emitting diode that is fixed on substrate surface, also comprises the reflector covering on light-emitting diode, and this reflector inwall is reflecting surface, and there is through hole at Qie Qi center; The light that the angle of emergence in the light that light-emitting diode sends is less than special angle is able to the direct outgoing of central through hole from reflector, and the light that in the light that light-emitting diode sends, the angle of emergence is greater than special angle is incident in the inwall of reflector and is reflected back toward light-emitting diode.
2. package structure for LED according to claim 1, is characterized in that, described light-emitting diode is light-emitting diode chip for backlight unit, or light-emitting diode is the light-emitting diode chip for backlight unit that surface coverage has wavelength conversion layer.
3. package structure for LED according to claim 1, is characterized in that, the part that the reflecting surface of described reflector is sphere, and the centre of sphere of this sphere is at the luminescence center of light-emitting diode.
4. package structure for LED according to claim 1, is characterized in that, the reflecting surface of described reflector to cross the transversal of axis be an oval part, this ellipse is taking two end points of light-emitting area of light-emitting diode as two oval focuses.
5. package structure for LED according to claim 1, is characterized in that, the bottom surface of described reflector is fixed on described substrate.
6. package structure for LED according to claim 6, is characterized in that, reference column is arranged at described reflector bottom, has corresponding location hole on substrate, and the location hole that the reference column of reflector bottom inserts on substrate comes for reflector location.
7. package structure for LED according to claim 1, is characterized in that, also comprises the transparent window on the central through hole that is fixed on reflector.
8. package structure for LED according to claim 7, is characterized in that, described transparent window is lens, is less than the light of special angle for collecting the light angle of emergence that light-emitting diode sends.
9. a light-emitting device, is characterized in that, comprises according to the package structure for LED described in any one in claim 1 to 8.
10. a light-emitting device, is characterized in that, comprises redness, green and blue three kinds of LED source, and wherein the light source of at least one color has used according to the package structure for LED described in any one in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834998.6U CN203733828U (en) | 2013-12-18 | 2013-12-18 | Light emitting diode packaging structure and light emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834998.6U CN203733828U (en) | 2013-12-18 | 2013-12-18 | Light emitting diode packaging structure and light emitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733828U true CN203733828U (en) | 2014-07-23 |
Family
ID=51203876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320834998.6U Expired - Lifetime CN203733828U (en) | 2013-12-18 | 2013-12-18 | Light emitting diode packaging structure and light emitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647015A (en) * | 2013-12-18 | 2014-03-19 | 吴震 | Light-emitting diode encapsulation structure and light emitting device |
-
2013
- 2013-12-18 CN CN201320834998.6U patent/CN203733828U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647015A (en) * | 2013-12-18 | 2014-03-19 | 吴震 | Light-emitting diode encapsulation structure and light emitting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101717891B1 (en) | Illumination system and method for recycling light to increase the brightness of the light source | |
| CN101385145B (en) | Separate optical device for directing light from an LED | |
| CN203732871U (en) | Light emitting device and projection display system | |
| JP2007513382A (en) | Reflected light coupler | |
| US20120217519A1 (en) | Method and structure for encapsulating solid-state light emitting chip and light sources using the encapsulation structure | |
| JP2015511758A (en) | Surface light source | |
| US9052071B2 (en) | Illumination device having light-guiding structure | |
| KR101315083B1 (en) | High brightness light emitting diode device | |
| EP3051200A1 (en) | Light-emitting apparatus | |
| JP2010129202A (en) | Led illuminating device | |
| CN102980134A (en) | Condensing lens and lighting device equipped with said condensing lens | |
| CN203733828U (en) | Light emitting diode packaging structure and light emitting device | |
| CN103647015A (en) | Light-emitting diode encapsulation structure and light emitting device | |
| CN107210349A (en) | Light-emitting device | |
| US11519586B2 (en) | Lamp | |
| TWI392125B (en) | Light emitting device | |
| CN203732870U (en) | Light emitting device and projection display system | |
| CN103631078A (en) | Light-emitting device and projection display system | |
| CN203733829U (en) | Light emitting diode packaging structure and light emitting device | |
| CN102486274A (en) | Light source module and stage lighting fixture | |
| CN103647011A (en) | Light-emitting diode encapsulation structure and light emitting device | |
| US9052578B2 (en) | Laser projection device | |
| CN210197025U (en) | Light control device and lighting system | |
| US20140321158A1 (en) | Light source module | |
| CN104696879A (en) | Runway light for airport |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |