CN103293840A - Light source system and projecting device comprising same - Google Patents
Light source system and projecting device comprising same Download PDFInfo
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- CN103293840A CN103293840A CN2012100406783A CN201210040678A CN103293840A CN 103293840 A CN103293840 A CN 103293840A CN 2012100406783 A CN2012100406783 A CN 2012100406783A CN 201210040678 A CN201210040678 A CN 201210040678A CN 103293840 A CN103293840 A CN 103293840A
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Abstract
The invention relates to a light source system and a projecting device comprising the light source system. The projecting device comprises an imaging system and the light source system. The light source system comprises a first light source, a color wheel and a reflector. The first light source provides first-wave-band light in the first axial direction, the color wheel rotates with the second axial direction as the center, the first axial direction is perpendicular to the second axial direction, a first-wave-band conversion block is arranged on the periphery of the color wheel in an annular mode, and the reflector is arranged on the periphery of the color wheel in an adjacent mode. When the first-wave-band light is projected to the first-wave-band conversion block, the first-wave-band conversion block converts the first-wave-band light into second-wave-band light, and the reflector reflects the second-wave-band light.
Description
Technical field
The present invention is about a kind of light-source system and the projection arrangement that comprises light-source system.In more detail, the present invention carries out the light-source system of wavelength conversion and the projection arrangement that uses this light-source system for a kind of with specific band light.
Background technology
In recent years because the manufacturing technology of projection arrangement promotes the compact market mainstream that become of projection arrangement gradually.The demand of market seeking change and innovation has promoted the Continual Improvement of projection arrangement design, and projection arrangement manufacturer must develop that various differences are more small-sized, efficient better, image quality better projection arrangement in response to ground, meets the need of market thus.
The tradition projection arrangement adopts the light-emittingdiode of single form and aspect to be projected on the colour wheel sector region of coating fluorescent material of all kinds mostly, and light-emitting component and colour wheel all be arranged in parallel on single axial, and the light focusing after will reflecting or change makes and carries out imaging to imaging system.So under this kind framework, blue light needs just to be able to and green glow and red actinic light through after repeatedly reflecting, and causes the blue light light ray energy significantly to lose, and influences image quality and the brightness of projection arrangement.In order to improve the image quality of projection arrangement, often need coating larger area fluorescent material on colour wheel again,, yet under the prerequisite of identical colour wheel area, the area of dissipation of colour wheel also with become to subtracting, hereat must increase a surface area of colour wheel, to meet the radiating requirements of projection arrangement; Moreover, because the emission light of light-emittingdiode belongs to scattered light, converge light improving luminescence efficiency so must a plurality of collector lenses concentrate, but thus, projector certainly will need bigger inner space side to be enough to hold a plurality of collective opticses, can't meet demand compact on the market.
In sum, to how to make projection arrangement have light-source system and the smaller volume of greater efficiency simultaneously, and improving light ray energy and not changing under the prerequisite such as the shared volume of colour wheel, solve the problem of light-source system radiating efficiency simultaneously, just still need the target of effort badly for industry.
Summary of the invention
A purpose of the present invention is to provide a kind of light-source system, this light-source system can be applicable on the projection arrangement, utilize LASER Light Source to be projected on the colour wheel, and fluorescent material is coated on the periphery of colour wheel, reach the luminescence efficiency that improves light-source system, the volume of reduced projection device thus, and promote the purpose of light-source system radiating efficiency.
For reaching aforementioned purpose, the present invention is about a kind of light-source system and the projection arrangement that comprises this light-source system.Projection arrangement comprises an imaging system and light-source system.Light-source system comprises one first light source, a colour wheel and a catoptron.First light source axially provides one first wave band light along one first.Colour wheel rotates centered by axially by one second, and first is axially axially vertical with second, and a periphery ring of colour wheel is established one first wave band and changed block.Catoptron is adjacent to the periphery of colour wheel.When the first wave band light was projected to first wave band conversion block, first wave band conversion block was converted to one second wave band light with the first wave band light, the mirror reflects second wave band light.
After consulting embodiment graphic and that describe subsequently, affiliated technical field technician just can understand other purpose of the present invention, advantage and technological means of the present invention and implement aspect.
Description of drawings
Fig. 1 is the projection arrangement synoptic diagram of first embodiment of the invention;
Fig. 2 is the subelement amplification stereogram of first embodiment of the invention; And
Fig. 3 is the projection arrangement synoptic diagram of second embodiment of the invention.
Wherein, description of reference numerals is as follows:
1 projection arrangement
11 light-source systems
111 first light sources
1,111 first is axial
1,112 first wave band light
1,113 second wave band light
1114 triband light
112 colour wheels
1121 peripheries
1121a first wave band conversion block
1121b second wave band conversion block
1,122 second is axial
1123 back sides
113 catoptrons
114 first beam splitters
115 collective opticses
116 secondary light sources
117 second beam splitters
118 light collecting elements
13 imaging systems
2 projection arrangements
21 light-source systems
211 first light sources
2,111 first is axial
2,112 first wave band light
2,113 second wave band light
2114 triband light
212 colour wheels
2121 peripheries
2121a first wave band conversion block
2121b second wave band conversion block
2,122 second is axial
213 catoptrons
214 beam splitters
215 secondary light sources
216 collective opticses
217 light collecting elements
23 imaging systems
Embodiment
Below will explain content of the present invention through embodiment, the present invention is about a kind of light-source system and the projection arrangement that uses this light-source system.Projection arrangement can be that digit optical is handled (Digital Light Processing; DLP) projection display or liquid crystal (Liquid Crystal Display; LCD) projection display etc. has the equipment of Projection Display function.Need the expositor, in following embodiment and accompanying drawing, only be explaination purpose of the present invention about the explanation of embodiment, but not in order to direct restriction the present invention, simultaneously, following examples and graphic in, all omit and do not illustrate with the non-directly related element of the present invention; And each interelement size relationship is only for asking easy understanding in graphic, and is non-in order to limit actual ratio.
The first embodiment of the present invention is a kind of light-source system 11 for a projection arrangement 1.The synoptic diagram of projection arrangement 1 as shown in Figure 1, it comprises a light-source system 11 and an imaging system 13.The light-source system 11 of projection arrangement 1 is in order to providing a light (scheming not shown), and exports light to imaging system 13 so that imaging system 13 with image formation by rays to show a projected picture (scheming not shown).The light-source system 11 of first embodiment of the invention comprises one first light source 111, a colour wheel 112, a catoptron 113, one first beam splitter 114, two collective opticses 115, a secondary light source 116, one second beam splitter 117 and light collecting elements 118.
Please refer to Fig. 1, first light source 111 of present embodiment comprises a plurality of blue laser light sources (scheming not shown), in order to provide a plurality of first wave band light 1112 along one first axial 1111, hereat, just can strengthen the light intensity of the first wave band light 1112 thus; And in present embodiment, the first wave band light 1112 belongs to the light of a blue wave band scope.The first wave band light, 1112 concentrated areas are projected to a periphery 1121 of colour wheel 112, and this periphery 1121 is colour wheel 112 circumferential edges.It should be noted that so the quantity of first light source 111 of the present invention and kind are not limited with above-mentioned, knowing this technical field person can also substitute by the other light sources framework.
Please in the lump with reference to the enlarged diagram that Figure 2 shows that colour wheel 112, colour wheel 112 rotates centered by one second axial 1122, and first axial 1111 is vertical with second axial 1122.As shown in the figure, periphery 1121 rings of colour wheel 112 are established one first wave band conversion block 1121a and one second wave band conversion block 1121b, wherein first wave band conversion block 1121a adjoins with second wave band conversion block 1121b and joins, and first wave band conversion block 1121a and second wave band are changed block 1121b and be coated with different fluorescent materials.First wave band conversion block 1121a is coated with a green fluorescent material on periphery 1121, in order to convert the first wave band light 1112 to one second wave band light 1113; And second wave band conversion block 1121b is coated with a red fluorescence material on periphery 1121, in order to the first wave band light 1112 is converted to a triband light 1114.In present embodiment, the second wave band light 1113 is the light in the green wavelength band, and triband light 1114 is the light in the red wavelength band.Knowing this technical field person can be according to the needs of the intensity of light source and color representation, and appropriateness is adjusted the area ratio of each wave band conversion block on colour wheel 112; In addition, also can on periphery 1121, set up triband conversion block, coating yellow fluorescent material it on, so that the first wave band light 1112 is converted to one the 4th wave band light, i.e. the interior light of yellow wavelength band.Because the first wave band light 1112 that the blue laser light source provides has thin and characteristic straight and concentration of energy, therefore first wave band conversion block 1121a and the required area of second wave band conversion block 1121b only must get final product greater than a sectional area of the first wave band light 1112.
Please continue ginseng Fig. 2, catoptron 113 is adjacent to the periphery 1121 of colour wheel 112, the catoptron 113 of present embodiment is arranged at the back side 1123 (that is inside surface of periphery 1121) of first wave band conversion block 1121a and second wave band conversion block 1121b, and along with colour wheel 112 rotates and rotates; In other words, the catoptron 113 of present embodiment is coated with a reflective material in the inside surface of periphery 1121.Inject and through second wave band light 1113 and the triband light 1114 of wave band conversion block 1121a, 1121b conversion along first axial 1111 thus, just can reflect because of the catoptron 113 of the inside surface of periphery 1121, through second wave band light 1113 and the triband light 1114 of reflection, all will be focused on by collective optics 115.Yet know the art person, also can directly form with a plurality of reflecting optics.
Two collective opticses 115 are centered by first axial 1111, be arranged between the periphery 1121 of first beam splitter 114 and colour wheel 112, two collective opticses 115 are in order to focus on the light that all pass through, namely focus on the first wave band light 1113 to the periphery 1121 of colour wheel 112, and be incident to first beam splitter 114 in order to focus on the second wave band light 1113 and triband light 1114.In present embodiment, each collective optics 115 is all convex lens, so implements in aspects in of the present invention other, knows the collective optics 115 that this technical field person can spread to other numbers easily, the aspect with collective optics 115 of various kenels or material.
With first light source 111 in the same manner, secondary light source 116 also has a plurality of blue laser light sources, is suitable for to provide one first wave band light 1112 to be projected to second beam splitter 117.In other implemented aspects, secondary light source can be single blue laser light source, also can be at least one blue light emitting diode (Light Emitting Diode, LED).
Below will introduce the operating mechanism of the light-source system 11 of present embodiment in detail.
When the sequential of light-source system 11 is desired green glow is provided, the blue laser light source of first light source 111 is launched the first wave band light 1112, via collective optics 115 first wave band that the first wave band light 1112 focuses on the colour wheel 112 is changed block 1121a again by first beam splitter 114, the first wave band light 1112 just is converted to the second wave band light 1113, and is reflected along first axial 1111 by catoptron 113.The second wave band light 1113 focuses to first beam splitter 114 after by collective optics 115, and the second wave band light 1113 was subjected to 114 reflections of first beam splitter and by second beam splitter 117, arrived in light collecting element 118 to carry out the action of uniform light this moment.
It is right when the sequential of light-source system 11 is desired ruddiness is provided, the blue laser light source of first light source 111 is launched the first wave band light 1112, via collective optics 115 second wave band that the first wave band light 1112 focuses on the colour wheel 112 is changed block 1121b again by first beam splitter 114, the first wave band light 1112 just is converted to triband light 1114, and is reflected along first axial 1111 by catoptron 113.Triband light 1114 focuses to first beam splitter 114 after by collective optics 115, and triband light 1114 was subjected to 114 reflections of first beam splitter and by second beam splitter 117, arrived in light collecting element 118 to carry out the action of uniform light this moment.
When the sequential of light-source system 11 was desired blue light is provided, the blue laser light source of secondary light source 116 was launched the first wave band light, 1112 directives, second beam splitter 117, reflexes to light collecting element 118 to carry out the action of uniform light via second beam splitter 117 more again.In sum, the first wave band light 1112, the second wave band light 1113 and triband light 1114 all must be projected to light collecting element 118 to carry out all light, export imaging system 13 to the first wave band light 1112 that will belong to blue wave band, the triband light 1114 that belongs to the second wave band light 1113 of green light band and belong to red spectral band, so that imaging system 13 is carried out imaging by the aforesaid first wave band light 1112, the second wave band light 1113 and triband light 1114, throw and demonstrate a projected picture.
By with colour wheel 112 by centered by second axial 1122 and the setting on perpendicular to first axial 1111, but the just required volume of reduced projection device 1.In addition, by green fluorescent material and red fluorescence material are coated on the periphery 1121 of colour wheel 112, make colour wheel 112 not only can keep area originally, also can further improve light-source system 11 radiating efficiencys because of the area of dissipation increase of colour wheel 112.
The second embodiment of the present invention is a kind of light-source system 21 for a projection arrangement 2.The synoptic diagram of projection arrangement 2 as shown in Figure 3, it comprises a light-source system 21 and an imaging system 23.The light-source system 21 of projection arrangement 2 is in order to providing a light (scheming not shown), and exports light to imaging system 23, makes imaging system 23 that image formation by rays is shown a projected picture (scheming not shown).The light-source system 21 of second embodiment of the invention comprises one first light source 211, a colour wheel 212, a catoptron 213, a beam splitter 214, a secondary light source 215, two collective opticses 216 and a light collecting element 217.Each element of present embodiment is similar to first embodiment, and sincerely details are as follows.
Please refer to Fig. 3, first light source 211 of present embodiment comprises a plurality of blue laser light sources (scheming not shown), in order to provide a plurality of first wave band light 2112 along one first axial 2111, hereat, just can strengthen the light intensity of the first wave band light 2112 thus, and the first wave band light 2112 belongs to the light of a blue wave band scope.Be that first light source 211 of present embodiment adopts the design similar with first light source 211 of last embodiment, the first wave band light 2112 is concentrated to be injected to a periphery 2121 directions of colour wheel 212, and periphery 2121 is colour wheel 212 circumferential edges.
Please in the lump with reference to the enlarged diagram that Figure 2 shows that colour wheel 112, colour wheel 212 synoptic diagram of itself and present embodiment are similar, colour wheel 212 rotates centered by one second axial 2122, and first axial 2111 is vertical with second axial 2122, periphery 2121 rings of colour wheel 212 are established one first wave band conversion block 2121a and one second wave band conversion block 2121b, wherein first wave band conversion block 2121a adjoins with second wave band conversion block 2121b and joins, and first wave band conversion block 2121a and second wave band are changed block 2121b and be coated with different fluorescent materials.First wave band conversion block is coated with a green fluorescent material on periphery 2121, in order to convert the first wave band light 2112 to one second wave band light 2113; And second wave band conversion block is coated with a red fluorescence material on periphery 2121, in order to the first wave band light 2112 is converted to a triband light 2114.In present embodiment, the second wave band light 2113 is the light in the green wavelength band, and triband light 2114 is the light in the red wavelength band.Knowing this technical field person can be according to the needs of the intensity of light source and color representation, and appropriateness is adjusted the area ratio of each wave band conversion block on colour wheel 212; In addition, also can on periphery 2121, set up triband conversion block, coating yellow fluorescent material it on, so that the first wave band light 2112 is converted to one the 4th wave band light, that is the interior light of yellow wavelength band.
The difference of present embodiment and last embodiment maximum is that catoptron 213 is arranged at colour wheel 212 with respect to the opposite side of wave band conversion block, and along second axial 2,122 the second wave band light 2113 and triband light 2114 is reflected; Second wave band light 2113 and the triband light 2114 after namely changing, by first wave band conversion block 1121a and second wave band conversion block 1121b, continue to be projected to forward the catoptron 213 of colour wheel 212 inside, through second wave band light 2113 and the triband light 2114 of reflection, all will be focused on by collective optics 216.
More specifically, the described catoptron 213 of first embodiment is the back side 1123 that a reflective material is coated on wave band conversion block, and along with colour wheel 212 rotates and rotates, be to be fixed in the light-source system 21 compared to the described catoptron 213 of present embodiment, therefore can not produce along with colour wheel 212 and rotatablely move.
Two collective opticses 216 are arranged between catoptron 213 and the beam splitter 214 to be parallel to second axial 2122 direction, and two collective opticses 216 make it be incident to beam splitter 214 in order to focus on second wave band light 2113 and the triband light 2114.In present embodiment, each collective optics 216 is all convex lens, so implements to know the aspect that this technical field person can spread to the collective optics of other numbers, other kenels or material easily in the aspect in of the present invention other.
With first light source 211 in the same manner, secondary light source 215 also has a plurality of blue laser light sources, is suitable for to provide one first wave band light 2112 to be projected to beam splitter 214.In other implemented aspects, secondary light source can be single blue laser light source, also can be at least one blue light emitting diode (Light Emitting Diode, LED).
Beam splitter 214 is arranged between collective optics 216 and the light collecting element 217, wherein beam splitter 214 allow the second wave band light 2113 and triband light 2114 by and reflect the first wave band light 2112, again with all by or reflection concentrate from the light of beam splitter 214 and focus on light collecting element 217.In present embodiment, the second wave band light 2113 is the light in the green wavelength band, and triband light 2114 is the light in the red wavelength band.In addition, light collecting element 217 of the present invention can be an optical channel or a light harvesting post.Similarly, the aforesaid first wave band light 2112, the second wave band light 2113 and triband light 2114 are according to specific time sequence, to penetrate light in different time points, are not to provide simultaneously to imaging system 23.
Below will introduce the operating mechanism of the light-source system 21 of present embodiment in detail.
When the sequential of light-source system 21 is desired green glow is provided, the blue laser light source of first light source 211 is launched the first wave band light 2112 to first wave band on the colour wheel 212 and is changed block 2121a, then the second wave band light 2113 after the conversion penetrates first wave band conversion block 2121a, to reflect along second axial 2122 via catoptron 213.The second wave band light 2113 just focuses to beam splitter 214 by behind the collective optics 216, and this moment second, wave band light 2113 was suitable with by beam splitter 214, then arrived in light collecting element 217 to carry out the action of uniform light.
When the sequential of light-source system 21 is desired ruddiness is provided, the blue laser light source of first light source 211 is launched the second wave band light 2113 to second wave band on the colour wheel 212 and is changed block 2121b, then the second wave band light 2113 after the conversion penetrates second wave band conversion block 2121b, to reflect along second axial 2122 via catoptron 213.Triband light 2114 just focuses to beam splitter 214 by behind the collective optics 216, and this moment, triband light 2114 was suitable with by beam splitter 214, then arrived in light collecting element 217 to carry out the action of uniform light.
When the sequential of light-source system 11 was desired blue light is provided, the blue laser light source of secondary light source 215 was launched the first wave band light, 2112 directive beam splitters 214, reflexes to light collecting element 118 to carry out the action of uniform light via beam splitter 214 more again.In sum, the first wave band light 2112, the second wave band light 2113 and triband light 2114 all must be projected to light collecting element 217 to carry out all light, export imaging system 23 to the first wave band light 2112 that will belong to blue wave band, the triband light 2114 that belongs to the second wave band light 2113 of green light band and belong to red spectral band, so that imaging system 23 is carried out imaging by the aforesaid first wave band light 2112, the second wave band light 2113 and triband light 2114, throw and demonstrate a projected picture.
By green fluorescent material and red fluorescence material are coated on the periphery 2121 of colour wheel 212, make colour wheel 212 not only can keep area originally, also can further improve radiating efficiency because of the area of dissipation increase of colour wheel 212.
The number of elements of the various embodiments described above and position all visual demand are adjusted, and for example, in second embodiment, can increase a plurality of collective opticses 216 in 212 of first light source 211 and colour wheels, so that the first wave band light 2112 concentrates on the colour wheel 212 more; In addition, in each embodiment, colour wheel also can be coated with the fluorescent material (as yellow fluorescent material) of other colors, to reach different imaging color demands, makes color Xian Yan, colour developing or raising brightness more.
In sum, under light-source system of the present invention can use at the volume of minimum, utilize independently blue laser light source and the wavelength conversion block with red fluorescence material and green fluorescent material, replace and use single light source to be projected to the mode of colour wheel, and can increase the radiating efficiency of light-source system effectively.Thus, see through light-source system of the present invention, can significantly improve existing problem in the known projection arrangement.
The above embodiments only are used for exemplifying enforcement aspect of the present invention, and explain technical characterictic of the present invention, are not to limit protection category of the present invention.Any be familiar with this operator can unlabored change or the arrangement of isotropism all belong to the scope that the present invention advocates, the scope of the present invention should be as the criterion with claims scope.
Claims (12)
1. light-source system comprises:
One first light source axially provides one first wave band light along one first;
One colour wheel rotates centered by axially by one second, and this is first axially second axially vertical with this, and a periphery ring of this colour wheel is established one first wave band and changed block; And
One catoptron is adjacent to this periphery of this colour wheel,
Wherein, when this first wave band light was projected to this first wave band conversion block, this first wave band conversion block was converted to one second wave band light with this first wave band light, this second wave band light of this mirror reflects.
2. light-source system as claimed in claim 1, wherein this catoptron first axially goes out this second band of light line reflection along this.
3. light-source system as claimed in claim 2 more comprises a beam splitter, be arranged between this periphery of this first light source and this colour wheel, this beam splitter allow this first wave band light by and reflect this second wave band light.
4. light-source system as claimed in claim 2, wherein this periphery of this colour wheel more encircles and establishes the one second wave band conversion block that joins with this first wave band conversion block, when this first wave band light is projected to this second wave band conversion block, this second wave band conversion block is converted to a triband light with this first wave band light, and this catoptron first axially reflects this triband light along this.
5. light-source system as claimed in claim 4 more comprises a beam splitter, be arranged between this periphery of this first light source and this colour wheel, this beam splitter allow this first wave band light by and reflect this second wave band light and this triband light.
6. light-source system as claimed in claim 1, wherein this catoptron second axially goes out this second band of light line reflection along this.
7. light-source system as claimed in claim 6, wherein this periphery of this colour wheel more encircles and establishes the one second wave band conversion block that joins with this first wave band conversion block, when this first wave band light is projected to this second wave band conversion block, this second wave band conversion block is converted to a triband light with this first wave band light, and this catoptron second axially reflects this triband light along this.
8. light-source system as claimed in claim 1, wherein this first light source comprises a plurality of blue laser light sources, and this first wave band light is a blue ray.
9. light-source system as claimed in claim 1 more comprises a secondary light source, has at least one blue laser light source or at least one blue light-emitting diode.
10. as claim 4 or 7 described light-source systems, wherein this first wave band conversion block and this second wave band conversion block are coated with a green fluorescent material, a red fluorescence material or a yellow fluorescent material, and this first wave band is changed block and this second wave band conversion block is coated with different fluorescent materials.
11. a projection arrangement comprises:
A kind of light-source system as claimed in claim 1 provides one first wave band light, one second wave band light and a triband light; And
One imaging system, this first wave band light, this second wave band light and this triband light that this light-source system is provided carry out imaging.
12. projection arrangement as claimed in claim 11, wherein this light-source system comprises a secondary light source, so that this first wave band light to be provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100406783A CN103293840A (en) | 2012-02-22 | 2012-02-22 | Light source system and projecting device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100406783A CN103293840A (en) | 2012-02-22 | 2012-02-22 | Light source system and projecting device comprising same |
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| CN103293840A true CN103293840A (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100406783A Pending CN103293840A (en) | 2012-02-22 | 2012-02-22 | Light source system and projecting device comprising same |
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| CN (1) | CN103293840A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018107586A1 (en) * | 2016-12-12 | 2018-06-21 | 广景视睿科技（深圳）有限公司 | Curved-surface wavelength conversion system |
| WO2019109508A1 (en) * | 2017-12-06 | 2019-06-13 | 深圳光峰科技股份有限公司 | Light source system and projection system |
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| KR20030031582A (en) * | 2001-10-15 | 2003-04-23 | 엘지전자 주식회사 | Reflection type projector |
| CN1726721A (en) * | 2002-12-13 | 2006-01-25 | 皇家飞利浦电子股份有限公司 | Scrolling color projection system incorporating electro-optic light modulator and rotating light-reflective element |
| US20110043762A1 (en) * | 2009-08-20 | 2011-02-24 | Seiko Epson Corporation | Projector |
| WO2011092842A1 (en) * | 2010-01-29 | 2011-08-04 | Ｎｅｃディスプレイソリューションズ株式会社 | Illuminating optical system and projector using same |
| TW201128287A (en) * | 2010-02-03 | 2011-08-16 | Hon Hai Prec Ind Co Ltd | Projector |
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| CN1327689A (en) * | 1999-10-08 | 2001-12-19 | Lg电子株式会社 | Cylindrical color wheel and fabricating method thereof and projector using the same |
| KR20030031582A (en) * | 2001-10-15 | 2003-04-23 | 엘지전자 주식회사 | Reflection type projector |
| CN1726721A (en) * | 2002-12-13 | 2006-01-25 | 皇家飞利浦电子股份有限公司 | Scrolling color projection system incorporating electro-optic light modulator and rotating light-reflective element |
| US20110043762A1 (en) * | 2009-08-20 | 2011-02-24 | Seiko Epson Corporation | Projector |
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| WO2018107586A1 (en) * | 2016-12-12 | 2018-06-21 | 广景视睿科技（深圳）有限公司 | Curved-surface wavelength conversion system |
| WO2019109508A1 (en) * | 2017-12-06 | 2019-06-13 | 深圳光峰科技股份有限公司 | Light source system and projection system |
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Application publication date: 20130911 |