CN103885274A - Light emitting device and related projection system - Google Patents
Light emitting device and related projection system Download PDFInfo
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- CN103885274A CN103885274A CN201210558409.6A CN201210558409A CN103885274A CN 103885274 A CN103885274 A CN 103885274A CN 201210558409 A CN201210558409 A CN 201210558409A CN 103885274 A CN103885274 A CN 103885274A
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Abstract
The inventiondiscloses a light emitting device and a related projection system. The light emitting device comprises an excitation light source used for generating excitation light, a wavelength conversion device comprising a wavelength conversion layer, a driving device and a sealing device, wherein the wavelength conversion layer absorbs the excitation light and emits excited light, the driving device drives the wavelength conversion layer to realize periodic rotation to enable an incident light spot in the wavelength conversion layer to do motion in the predetermined circle locus, a line speed of at least a partial region of the wavelength conversion device is greater than or equal to 75m/s, the sealing device comprises a light penetration region and a heat conduction region, the wavelength conversion device is arranged in the sealing device, the emitting light of the wavelength conversion device penetrates through the light penetration region, a distance between the heat conduction region and a light emitting face of the wavelength conversion device or an opposite surface is smaller than or equal to 1mm, heat is conducted outside the sealing device, and the area of the heat conduction region is greater than or equal to the area of the incident light spot of the excitation light. The light emitting device having a dust-proof function and a function of effective work temperature reduction of the wavelength conversion device, and the related projection system are provided.
Description
Technical field
The present invention relates to illumination and display technique field, particularly relate to a kind of light-emitting device and relevant projecting system.
Background technology
Utilizing the colorama that excitated fluorescent powder produces is a kind of in the widely used scheme in the fields such as Projection Display as light source.In general, fluorescent powder can be arranged on the colour wheel of a High Rotation Speed, laser equal excitation light incides colour wheel and excitated fluorescent powder produces Stimulated Light, produce amount of heat simultaneously, the fluorescent powder that the effect of the high-speed rotation of colour wheel is to make zones of different is in turn under the irradiation in exciting light, zones of different can be shared heat, thereby reduces colour wheel temperature.
Because fluorescent powder is not 100% to the conversion efficiency of exciting light, fluorescent powder can produce a large amount of heat, and the heat radiation of colour wheel is mainly to realize by the thermal convection between colour wheel and air.Although colour wheel is exposed in air and heat can be conducted to air and reduces working temperature, but because air exists a large amount of dust granules, when colour wheel surface attachment has dust granule, the surrounding of dust granule can gather a large amount of heats, likely cause the temperature of colour wheel sharply to raise, even burn out colour wheel.
Summary of the invention
The technical matters that the present invention mainly solves has been to provide a kind of light-emitting device and relevant projecting system of taking into account the dustproof of Wavelength converter and effectively reducing the working temperature of Wavelength converter.
The embodiment of the present invention provides light-emitting device, comprising:
A kind of excitation source, for generation of exciting light;
Wavelength converter, comprises wavelength conversion layer, and this wavelength conversion layer is used for absorbing exciting light outgoing Stimulated Light;
Drive unit, drive unit is used for driving wavelength conversion layer periodic rotary, and to make exciting light be incident on hot spot on wavelength conversion layer along predetermined circular trace cyclical movement, the linear velocity at least part of region of Wavelength converter is more than or equal to 75 meter per seconds;
Packoff, Wavelength converter is arranged in sealing device, sealing device comprises photic zone and thermal conductive zone, photic zone shines the light of this photic zone from Wavelength converter for transmission, distance between the light-emitting face of thermal conductive zone and Wavelength converter or the surface relative with this light-emitting face is less than or equal to 1 millimeter, thermal conductive zone conducts to packoff outside for the heat that Wavelength converter is passed to this thermal conductive zone, and the area of thermal conductive zone is more than or equal to exciting light and is incident on the area of the hot spot of wavelength conversion layer.
Preferably, thermal conductive zone is positioned at position relative with hot spot on packoff.
Preferably, the surperficial area of the area of thermal conductive zone and the close thermal conductive zone of Wavelength converter equates.
Preferably, drive unit is fixed on the sidewall of packoff.
Preferably, Wavelength converter also comprises substrate, and this substrate is used for carrying wavelength conversion layer, and substrate is positioned at a side of the close thermal conductive zone of wavelength conversion layer.
Preferably, the coefficient of heat conductivity of substrate is greater than the coefficient of heat conductivity of described wavelength conversion layer.
Preferably, on the substrate of Wavelength converter, be provided with reflection horizon, this reflection horizon reflexes to the light that incides this reflection horizon the light-emitting face of Wavelength converter.
Preferably, light-emitting device also comprises heat abstractor, and heat abstractor is passed to outside air for the heat of accelerating thermal conductive zone.
The present invention also provides a kind of optical projection system, comprises above-mentioned light-emitting device.
Compared with prior art, the embodiment of the present invention has following beneficial effect:
In the embodiment of the present invention, Wavelength converter is positioned at packoff, and therefore Wavelength converter there will not be the situation of being adhered to by dust.Distance between the light-emitting face of Wavelength converter or surface and the thermal conductive zone relative with this light-emitting face is less than or equal to 1 millimeter, and on wavelength conversion layer, the linear velocity in region is more than or equal to 75 meter per seconds at least partly, this at least part of region can produce a larger shearing force to the air layer between Wavelength converter and packoff, make the air in thinner air layer produce disturbance, and the thermal resistance that causes this air layer thermal resistance of air layer when static can sharply decline, the heat of Wavelength converter can conduct to the thermal conductive zone of packoff soon by air layer, and by thermal conductive zone, heat is derived to packoff, thereby effectively reduce the working temperature of Wavelength converter, realize and taken into account dustproof and effective working temperature that reduces Wavelength converter.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of light-emitting device of the present invention;
Fig. 2 is between medium wavelength conversion equipment embodiment illustrated in fig. 1 and the thermal conductive zone of packoff
Thermal resistance and the distance between the two be related to schematic diagram;
Fig. 3 is the structural representation of another embodiment of light-emitting device of the present invention;
Fig. 4 is the structural representation of another embodiment of light-emitting device of the present invention;
Fig. 5 is the structural representation of another embodiment of light-emitting device of the present invention.
Embodiment
Below in conjunction with drawings and the embodiments, embodiments of the invention are carried out to labor.
Embodiment mono-:
Fig. 1 is the structural representation of an embodiment of light-emitting device of the present invention, and as shown in Figure 1, light-emitting device comprises excitation source 110, Wavelength converter 120, drive unit 130, packoff 140.
For Wavelength converter 120 is prevented dust, Wavelength converter 120 is arranged in a packoff 140, and sealing device 140 comprises thermal conductive zone 141, photic zone 142 and light incidence section 143.
In the present embodiment, photic zone 142 is transparent regions that arrange on the sidewall of packoff 140, and this transparent region can transmission shines the light of photic zone 142 from Wavelength converter 120.Particularly, photic zone 142 is provided with glass or PMMA(Polymethylmethacrylate, polymethylmethacrylate) etc. transparent material.In other embodiment of the present invention, photic zone 142 can also be that optical filter is set, and realizes simultaneously the light of the different wave length in the emergent light of Wavelength converter is carried out to selective filter.Similarly, light incidence section 143 is also the transparent region arranging on the sidewall of packoff, be with the difference of photic zone 142, light incidence section 143 is arranged in the light path between excitation source 110 and Wavelength converter 140, emergent light that can transmission excitation source 110.
What those skilled in the art were known is, the material for transformation of wave length of Wavelength converter absorbs and can produce a large amount of heats exciting light, and first the heat of Wavelength converter conducts to the air in packoff, then the air transmitted in packoff 140 is to packoff 140, finally by packoff 140 by dissipation of heat in outside air.Air layer between Wavelength converter 120 and packoff 140 is thinner, thermal resistance is less, and the thickness of thermal resistance and air layer is linear, therefore the distance between Wavelength converter 120 and packoff 140 is less, thermal resistance between they the two is less, and this thermal resistance and this distance are linear.Even but Wavelength converter 120 is very little with the distance of packoff 140, the thermal resistance of air layer is still very large.
Here by experiment the heat radiation of the Wavelength converter 120 in packoff 140 is studied.According to experiment, when the rotating speed of Wavelength converter 120 is set to 6000 revs/min, the diameter of Wavelength converter equals 30 centimetres, in order better to dispel the heat, packoff 140 outer walls other region except light incidence section 143 and photic zone 142 is metal material using as thermal conductive zone 141, now the relation of the thermal resistance between Wavelength converter 120 and the thermal conductive zone 141 of packoff 140 and the distance between the two as shown in Figure 2, in the time that the distance between Wavelength converter 120 and the thermal conductive zone 141 of packoff 140 is greater than 1 millimeter, thermal resistance between the two is substantially linear with distance, and distance is less, thermal resistance between the thermal conductive zone 141 of Wavelength converter 120 and packoff 140 is less, in the time that the distance between Wavelength converter 120 and the thermal conductive zone 141 of packoff 140 is less than or equal to 1 millimeter, along with distance reduces, the thermal resistance between the two is no longer linear with distance, but sharply reduces, and these are different from existing cognition.
Experiment is found, between Wavelength converter 120 and the thermal conductive zone 141 of packoff 140, distance is reduced to below 1 millimeter, there is variation in the heat conduction pattern of the air layer between the two: the air in air layer can produce disturbance, cause thermal resistance decline sharply, and be no longer only to conduct heat by thermal convection, and this disturbance is because the Wavelength converter 120 of High Rotation Speed causes the generation shearing force of air layer.
The diameter of the present embodiment medium wavelength conversion equipment is 30 centimetres and rotating speed is 6000 revs/min, now the rotating speed in the outermost region of Wavelength converter 120 is 188 meter per seconds, and carry out series of experiments discovery by the diameter and the rotating speed that change Wavelength converter 120, only need the linear velocity of the subregion of Wavelength converter 120 to reach 75 meter per seconds, and the distance between Wavelength converter 120 and thermal conductive zone 141 is less than or equal to 1 millimeter, just can reach the effect of the thermal resistance that greatly reduces the air layer between Wavelength converter 120 and packoff 140.
In above-mentioned experiment, the region division of packoff 140 except light incidence section 143 and photic zone 142 is that metal material is as thermal conductive zone 141, and by experiment, keep other condition constant, only change thermal conductive zone area and position and find, even if only still there is good result at the inside surface of the packoff 140 region division Heat Conduction Material relative with Wavelength converter 120.The area that further reduces thermal conductive zone is found, only a thermal conductive zone relative to Wavelength converter 120 need to be set, and the area that ensures this thermal conductive zone is more than or equal to the area of the launching spot of Wavelength converter, the linear velocity that simultaneously meets the subregion of Wavelength converter reaches 75 meter per seconds, and the distance between Wavelength converter 120 and thermal conductive zone is less than or equal to 1 millimeter, just can realize good heat radiation, thereby can effectively reduce the working temperature of Wavelength converter 120, take into account dustproof and effective working temperature that reduces Wavelength converter 120 to realize.
The metal material of the thermal conductive zone 141 in the present embodiment is specially aluminium sheet, and aluminium sheet is a kind of highly heat-conductive material, has good hot transmissibility.The heat that thermal conductive zone 141 can be passed to Wavelength converter 120 this thermal conductive zone 141 conducts to packoff 140 outsides.In other embodiment of the present invention, thermal conductive zone 141 can arrange the metal heat-conducting such as copper, silver material, the ceramic materials such as aluminium oxide, aluminium nitride, gallium nitride, diamond thin also can be set, the cooling devices such as semiconductor cooler can also be set, can play the effect that heat transmits.
What deserves to be explained is, light-emitting face and the thermal conductive zone 141 of the Wavelength converter 120 in the present embodiment be arranged in parallel, but due to reasons such as errors, the two may not be completely parallel, as long as ensure that the ultimate range between the two is less than or equal to 1 millimeter.The light-emitting face here refers to the surface of Wavelength converter 120 for the mixed light of outgoing Stimulated Light or Stimulated Light and exciting light, is specially the surface of wavelength conversion layer 121 near thermal conductive zone 141 in the present embodiment.Certainly, hold intelligiblely, it is parallel that the light-emitting face of Wavelength converter 120 and thermal conductive zone 141 approach, and it is less that the distance of the two just can arrange, and is more conducive to heat radiation.
In the present embodiment, drive unit 130 is fluid bearing motor preferably, fluid bearing motor has advantages of that the life-span is long, noise is low, the more important thing is, fluid bearing motor has good stability of rotation, and what can make that distance between light-emitting face and the thermal conductive zone of Wavelength converter can lean on is nearer.
The present embodiment medium wavelength conversion equipment 120 also comprises substrate 122, and this substrate 122 is clear glass, can play a supporting role to wavelength conversion layer 121.Preferably, the surface of substrate 122 arranges one deck filter coating, and this filter coating can transmission exciting light and reflected Stimulated Light, can improve the utilization factor of Stimulated Light; Further, the exciting light that filter coating can the incident of transmission low-angle and reflect the exciting light of Stimulated Light and wide-angle can improve exciting light and Stimulated Light utilization factor simultaneously.But for example, in the situation that the rigidity of wavelength conversion layer own is enough (wavelength conversion layer forms in fluorescent powder is entrained in to clear glass), substrate is omissible, now filter coating can be plated in the surface of wavelength conversion layer, has equally identical effect.
In the present embodiment, thermal conductive zone 141 is arranged on the position away from exciting light hot spot on packoff 140, but be provided with the transparent Heat Conduction Materials such as sapphire, gallium nitride, diamond thin during when thermal conductive zone 141, thermal conductive zone 141 can be arranged on the position of photic zone 142, and now photic zone and thermal conductive zone are combined into a region.
Embodiment bis-
Fig. 3 is the structural representation of another embodiment of light-emitting device of the present invention, and as shown in Figure 3, light-emitting device comprises excitation source 210, Wavelength converter 220, drive unit 230, packoff 240.Wavelength converter 220 comprises wavelength conversion layer 221 and substrate 222.Packoff 240 comprises thermal conductive zone 241 and photic zone 242.
The difference of the light-emitting device shown in light-emitting device and Fig. 1 of the present embodiment is:
(1) area of the thermal conductive zone 241 in the present embodiment is less, its area equals the area of hot spot, now still can ensure to realize the heat conduction to Wavelength converter 220, simultaneously owing to only need to the surface of thermal conductive zone 241 being processed and make its flatness higher, and other region of packoff 240 does not need, can packoff 240 reduce costs.
(2) excitation source 210 in the present embodiment is arranged on the inside of packoff 240, and packoff 240 can play dustproof effect to light source, and packoff 240 does not need to arrange light incidence section.Easily understanding is that other element also can be arranged in packoff 240.
(3), in the present embodiment, the photic zone 242 of light-emitting device is lens.Because the emergent light of fluorescent powder equiwavelength transition material is that full-shape is luminous, lens need to be set and collect to reduce its dispersion angle.In order to improve the collecting effect of lens 242, lens 242 need to be apart from wavelength conversion layer closer, therefore lens 242 are arranged in packoff 240, and be used for collecting the emergent light of Wavelength converter 220, now lens 242 can be arranged on the position nearer apart from Wavelength converter 220, and easily fixing.
Embodiment tri-
Fig. 4 is the structural representation of another embodiment of light-emitting device of the present invention, and as shown in Figure 4, light-emitting device comprises excitation source 310, Wavelength converter 320, drive unit 330, packoff 340.Wavelength converter 320 comprises wavelength conversion layer 321 and substrate 322.Packoff 340 comprises thermal conductive zone 341 and photic zone 342.
The difference of the light-emitting device shown in light-emitting device and Fig. 1 in the present embodiment is:
(1) Wavelength converter 320 is reflective colour wheel, and the surface of substrate 322 is provided with reflection horizon, and this reflection horizon is arranged at the one side of substrate 322 near wavelength conversion layer 321, can be reflected into the emergent light that is mapped to this reflection horizon.Exciting light is transmitted through Wavelength converter 320 from photic zone 342, and the emergent light of Wavelength converter 320 also transmits packoff 340 from photic zone 342.Because wavelength conversion layer 321 and substrate 322 are close contacts, the heat of wavelength conversion layer 321 can be easy to be transmitted on substrate 322, the light-emitting face of wavelength conversion layer 321 and substrate 322 are very approaching away from the surperficial temperature of wavelength conversion layer 321, therefore in the present embodiment, substrate 322 is away from the surface of wavelength conversion layer, be the surface relative with light-emitting face of Wavelength converter 320, while being less than or equal to 1 millimeter with the distance of thermal conductive zone 341, also can effectively reduce the working temperature of Wavelength converter 320.
In the present embodiment, the substrate 322 of Wavelength converter 320 is near the thermal conductive zone 341 of packoff 340.Substrate is with respect to fluorescent powder equiwavelength transition material, and surface smoothness can be accomplished higher, and therefore the distance between substrate 322 and thermal conductive zone 341 can be less.Preferably, the coefficient of heat conductivity of baseplate material is higher than the coefficient of heat conductivity of material for transformation of wave length, and now the heat of Wavelength converter 320 more easily conducts to thermal conductive zone 341.For example, substrate 322 is metal material, and metal has higher coefficient of heat conductivity, is convenient to machining simultaneously and can obtains higher surface smoothness.
In addition, substrate 322 can be also the hard material that high anti-aluminium sheet etc. has highly reflective surface, and now the other parts of reflection horizon and substrate can be regarded an entirety as.In order to distinguish the light path of exciting light and Wavelength converter emergent light, light-emitting device is also provided with optical filter 350 and carries out light splitting.
(2), concerning reflective Wavelength converter, the position of thermal conductive zone 341 arranges and can more optimize.In the present embodiment, thermal conductive zone 341 is arranged on packoff 340 and the close surface of substrate 322, and is positioned on this surface the position relative with exciting light hot spot on wavelength conversion layer.Clearly, on Wavelength converter 320, the highest region of temperature is the region at exciting light hot spot place, and therefore the position of the thermal conductive zone 341 here makes heat more promptly conduct to thermal conductive zone 341 from Wavelength converter 320.Certainly, previous embodiment one is mentioned thermal conductive zone 341 can be arranged to transparent Heat Conduction Material, can be positioned at too the sidewall position relative with exciting light hot spot of packoff, can more effectively dispel the heat equally, but the cost of transparent Heat Conduction Material is high undoubtedly more a lot of than general Heat Conduction Material.
(3), in the present embodiment, drive unit 330 is fixed on the sidewall of packoff 340.This fixed form more easily realizes between Wavelength converter 320 and thermal conductive zone 341 has less clearance.If drive unit is not relative with packoff fixing, example drive unit as shown in Figure 1, generally needs accurate adjusting could Wavelength converter and packoff be leaned on very closely when assembling.And while relatively fixing, there is a very little clearance between the two than being easier to the direct accuracy guarantee by mechanical parts.
Embodiment tetra-
Fig. 5 is the structural representation of another embodiment of light-emitting device of the present invention, and as shown in Figure 5, light-emitting device comprises excitation source 410, Wavelength converter 420, drive unit 430, packoff 440, optical filter 470.Wavelength converter 420 comprises wavelength conversion layer 421 and substrate 422.Packoff 440 comprises thermal conductive zone 441 and photic zone 442.
The difference of the light-emitting device shown in light-emitting device and Fig. 4 of the present embodiment is:
(1) area of the thermal conductive zone 441 in the present embodiment is greater than the area of the exciting light hot spot that incides wavelength conversion layer, and is close with the area of substrate 422.Hold intelligiblely, the area of thermal conductive zone 441 is larger, and thermal conduction capability is stronger.Consider material cost and the capacity of heat transmission of taking into account thermal conductive zone 441, the area of thermal conductive zone 441 equates with the surperficial area of the close thermal conductive zone 441 of Wavelength converter 420, specifically in the present embodiment, namely the area of thermal conductive zone 441 equates with the area of substrate 422.
(2) in the present embodiment, light-emitting device also comprises heat abstractor 450, and this heat abstractor 450 is near the first outside surface, and the first outside surface is the outside surface of the sidewall of the packoff at 441 places, thermal conductive zone.Heat abstractor 450 is specially heating radiator, it comprises radiating fin and the heat pipe that is connected radiating fin and the first outside surface, in fact heat pipe is connected with thermal conductive zone 441 exactly indirectly, accelerates the heat transmission of thermal conductive zone 441, thereby indirectly accelerates the heat transmission of Wavelength converter 420.Further, light-emitting device can also arrange fan 460, and this fan 460 is also arranged on the first outside surface of packoff 440, can be facing to heating radiator blowing, to accelerate the heat radiation of heating radiator.Certainly, radiating fin and fan 460 also can not be arranged on the first outside surface, and it is upper to be arranged on other surface, can play equally and accelerate the effect of dispelling the heat in thermal conductive zone 441.
On the other hand, because drive unit 430 is fixedly connected with Wavelength converter 420, therefore the heat of Wavelength converter 420 can conduct to drive unit 430, and the temperature of drive unit 430 also can be very high.And here, drive unit 430 is to be fixed on the sidewall at place, thermal conductive zone, its protuberance branch at the first outside surface to around radiating fin produce thermal convection and can accelerate the heat radiation of drive unit 430.Further, the non-rotatable member of drive unit 430 can contact with radiating fin, makes the heat radiation of drive unit 430 faster.Similarly, the fan 460 that is arranged at the first outside surface can be accelerated the heat radiation of drive unit 430 too.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
The embodiment of the present invention also provides a kind of optical projection system, comprises light-emitting device, and this light-emitting device can have structure and the function in the various embodiments described above.This optical projection system can adopt various shadow casting techniques, for example liquid crystal display (LCD, Liquid Crystal Display) shadow casting technique, digital light path processor (DLP, Digital Light Processor) shadow casting technique.
The foregoing is only embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention 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 invention.
Claims (10)
1. a light-emitting device, is characterized in that, comprising:
Excitation source, for generation of exciting light;
Wavelength converter, comprises wavelength conversion layer, and this wavelength conversion layer is used for absorbing described exciting light outgoing Stimulated Light;
Drive unit, described drive unit is used for driving described wavelength conversion layer periodic rotary, to make described exciting light be incident on hot spot on described wavelength conversion layer along predetermined circular trace cyclical movement, the linear velocity at least part of region of described Wavelength converter is more than or equal to 75 meter per seconds;
Packoff, described Wavelength converter is arranged in sealing device, sealing device comprises photic zone and thermal conductive zone, described photic zone shines the light of this photic zone from described Wavelength converter for transmission, distance between the light-emitting face of described thermal conductive zone and Wavelength converter or the surface relative with this light-emitting face is less than or equal to 1 millimeter, described thermal conductive zone conducts to packoff outside for the heat that described Wavelength converter is passed to this thermal conductive zone, and the area of described thermal conductive zone is more than or equal to described exciting light and is incident on the area of the hot spot of described wavelength conversion layer.
2. light-emitting device according to claim 1, is characterized in that: described thermal conductive zone is positioned at position relative with described hot spot on packoff.
3. light-emitting device according to claim 1, is characterized in that: the area of described thermal conductive zone equates with the surperficial area of the close thermal conductive zone of described Wavelength converter.
4. light-emitting device according to claim 1, is characterized in that: described drive unit is fixed on the sidewall of described packoff.
5. light-emitting device according to claim 1, is characterized in that: described drive unit is fluid bearing motor.
6. light-emitting device according to claim 1, is characterized in that: described Wavelength converter also comprises substrate, and this substrate is used for carrying described wavelength conversion layer, and described substrate is positioned at a side of the close described thermal conductive zone of described wavelength conversion layer.
7. light-emitting device according to claim 6, is characterized in that: the coefficient of heat conductivity of described substrate is greater than the coefficient of heat conductivity of described wavelength conversion layer.
8. light-emitting device according to claim 6, is characterized in that: on the substrate of described Wavelength converter, be provided with reflection horizon, this reflection horizon reflexes to the light that incides this reflection horizon the light-emitting face of described Wavelength converter.
9. light-emitting device according to claim 1, is characterized in that: described light-emitting device also comprises heat abstractor, and described heat abstractor is passed to outside air for the heat of accelerating described thermal conductive zone.
10. an optical projection system, is characterized in that, comprises the light-emitting device as described in claim 1 to 9 any one.
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| CN104676492A (en) * | 2015-01-31 | 2015-06-03 | 杨毅 | Wavelength conversion device and light-emitting device |
| CN105068367A (en) * | 2015-08-04 | 2015-11-18 | 杨毅 | Light-emitting device, projection display device and lamp |
| CN105301881A (en) * | 2015-10-12 | 2016-02-03 | 杨毅 | Light emitting device and projection display device |
| CN105301750A (en) * | 2015-10-12 | 2016-02-03 | 杨毅 | Optical module, light emitting device and projection display device |
| EP3043200A1 (en) * | 2014-12-08 | 2016-07-13 | Delta Electronics, Inc. | Color wheel device |
| CN106200222A (en) * | 2014-12-08 | 2016-12-07 | 台达电子工业股份有限公司 | Color wheel device |
| CN106324956A (en) * | 2015-06-30 | 2017-01-11 | 海信集团有限公司 | Laser light source heat dissipation system and laser projection system |
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| CN106444241A (en) * | 2015-08-04 | 2017-02-22 | 海信集团有限公司 | Laser light source and laser projection display device |
| CN108693685A (en) * | 2017-04-06 | 2018-10-23 | 精工爱普生株式会社 | Light supply apparatus and projecting apparatus |
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| CN111033366A (en) * | 2017-08-17 | 2020-04-17 | 索尼公司 | Light source device and projection display device |
| CN112666780A (en) * | 2019-10-15 | 2021-04-16 | 台达电子工业股份有限公司 | Wavelength conversion device |
| CN114518650A (en) * | 2018-04-12 | 2022-05-20 | 深圳光峰科技股份有限公司 | Color wheel assembly, light source system and projection equipment |
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| CN103885274B (en) | 2018-05-15 |
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