CN101840143B - Multi-light source illuminator for projectors - Google Patents
Multi-light source illuminator for projectors Download PDFInfo
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- CN101840143B CN101840143B CN2009100968702A CN200910096870A CN101840143B CN 101840143 B CN101840143 B CN 101840143B CN 2009100968702 A CN2009100968702 A CN 2009100968702A CN 200910096870 A CN200910096870 A CN 200910096870A CN 101840143 B CN101840143 B CN 101840143B
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Abstract
The invention provides a multi-light source illuminator for projectors. The multi-light source illuminator comprises at least two light sources, the light beams projected by the light sources are respectively projected to an imaging device via concave lenses, an X-prism, a projection lens assembly, a color wheel, a light guide stick and an illumination lens and prism assembly, consequently, the energy of the illuminating light is at least doubled, and moreover, the illumination is uniform.
Description
Technical field
The present invention relates to a kind of lighting device in the optical instrument field, relate in particular to multi-light source illuminator for projectors.
Background technology
Along with science and technology development, the range of application of projector is more and more wider, projector adopts LCD or DLP technology mostly on the market at present, its core light engine mainly is to adopt light source through illumination optics illumination LCD panel or DMD assembly, images on the screen by projection lens then.Be the illumination path synoptic diagram of present typical DLP projector as shown in Figure 1, the light that converges that is sent by light source 1 shines video picture device 10 after colour wheel 7, lamp guide 8, illumination eyeglass and prism group 9, and then is projected on the screen by projection lens 11.Optical lighting system is to influence optical projection system brightness and the topmost parts of color uniformity coefficient.The illuminator that present optical projection system is adopted mainly is made up of a light source and a plurality of optical mirror slip.These optical mirror slips also are used for the equalizing light rays that light source is sent except in order to the direction of transfer of adjusting light.
Because projection arrangement during as the image show tools, must have high brightness, can throw characteristics such as big picture, so in the projection arrangement, must adopt the illuminator of multiple light courcess, to improve its image high brightness, patent of the present invention is to propose on this basis, and realizes the illuminator of multiple light courcess.
Summary of the invention
The object of the present invention is to provide a kind of multi-light source illuminator for projectors, device comprises compositions such as first light source 1, secondary light source 2, first negative lens 3, second negative lens 4, light-combining prism 5, collector lens group 6, colour wheel 7, lamp guide 8, illumination eyeglass and prism group 9.Used first light source 1 and secondary light source 2 are the convergent type light source, behind first negative lens 3 and second negative lens 4 the light source convergent point is prolonged as requested, guarantee the convenient of the installation of the light source that adopts and transposing, light-combining prism 5 is coated with resistant to elevated temperatures highly reflecting films on first surface 51.The light that first light source 1 sends is dispersed through first negative lens 3, carries out 90 ° of deflections after inciding light-combining prism 5 first surfaces 51; Disperse through second negative lens 4 by the light that secondary light source 2 sends, incide the second surface 52 of light-combining prism 5, behind the ECDC light prism 5, from prism the 3rd surperficial 53 outgoing.
Behind collector lens group 6, colour wheel 7, converge on the plane of incidence of lamp guide 8 respectively by the light of light-combining prism 5 first surfaces 51 reflections and the light of light-combining prism 5 the 3rd surperficial 53 outgoing, light is after lamp guide 8, illumination eyeglass and prism group 9, project equably on imaging system 10 surfaces, no matter light intensity and position precision, all still can keep suitable level, so project imaging system 10 lip-deep light, its color saturation is identical during with the work of single lamp, and brightness is high during but than single lamp.
The optical axis that the optical axis that first light source 1 and first negative lens 3 are formed, secondary light source 2 and second negative lens 4 are formed is all opened certain distance with follow-up collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis differences.
Optical axis and collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis interval delta 1 that first light source 1 and first negative lens 3 are formed, optical axis and collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis interval delta 2 that the secondary light source 2 and second negative lens 4 are formed, its Δ 1 equates with Δ 2, and is symmetrical in collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axises.
The light that first light source 1 and secondary light source 2 send converges in respectively on the plane of incidence of lamp guide 8 behind first lens 3 or second negative lens 4, light-combining prism 5, collector lens group 6, colour wheel 7 respectively, and it two converges hot spot 20,21 and be on the symmetric position of plane of incidence central point and near the centre.
The present invention both can work by two light sources simultaneously, also can use separately by arbitrary light source.
The present invention can be used for the lighting device of projector, also can be used in other product that need throw light on.
Description of drawings
Fig. 1 is the typical illumination path synoptic diagram of present projector;
Fig. 2 is the illumination path synoptic diagram of embodiments of the invention;
Fig. 3 is the light-combining prism synoptic diagram of embodiments of the invention;
Fig. 4 converges position view for the light source of embodiments of the invention at the lamp guide plane of incidence.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Figure 2 shows that embodiments of the invention, device comprises first light source 1 and compositions such as secondary light source 2, first negative lens 3 and second negative lens 4, light-combining prism 5, collector lens group 6, colour wheel 7, lamp guide 8, illumination eyeglass and prism group 9.First light source 1 and secondary light source 2 are for converging light source, and first negative lens 3 and second negative lens 4 act as and the light source convergent point can be carried out proper extension as requested.Light-combining prism 5 is coated with resistant to elevated temperatures highly reflecting films on first surface 51 as shown in Figure 3, guarantees that light source can carry out 90 ° of deflections to the light of light-combining prism 5 first surfaces 51.
The light that first light source 1 sends incides on light-combining prism 5 first surfaces 51 through first negative lens 3, and carries out 90 ° of deflections; The light that secondary light source 2 sends arrives the second surface 52 of light-combining prism 5 behind second negative lens 4, the 3rd surperficial 53 outgoing of ECDC light prism 5, light by the 3rd surperficial 53 outgoing of the light of light-combining prism 5 first surfaces 51 reflection and light-combining prism 5, through condenser group 6, colour wheel 7, lamp guide 8, illumination eyeglass and prism group 9, light is projected imaging system 10 equably, no matter light intensity and position precision, all still can keep suitable level, so project imaging system 10 light, its color saturation is identical during with the work of single lamp, and brightness is high during but than single lamp.
The optical axis that first light source 1 and first negative lens 3 are formed is optical axis I, and the optical axis that the secondary light source 2 and second negative lens 4 are formed is optical axis II, and collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axises are optical axis III.
According to the position that lamp guide 8 is placed, determine first light source 1 and secondary light source 2 riding positions, optical axis I, optical axis II and follow-up collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis III inequality are opened certain distance as shown in Figure 2.Optical axis I that first light source 1 and first negative lens 3 are formed and the interval delta 1 of collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis III, optical axis II that the secondary light source 2 and second negative lens 4 are formed and the interval delta 2 of collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis III, its Δ 1 equates with Δ 2, and is symmetrical in collector lens group 6, colour wheel 7 and lamp guide 8 formed optical axis III.
The present invention in use, first light source 1 and secondary light source 2 can be worked simultaneously, also wherein any light source works independently, be applicable to different request for utilizations, because the mode that the light that first light source 1 and secondary light source 2 send transmits to the video picture device 10 is separately independently, to not influence of picture quality, its color saturation had same effect when single two lamps work when therefore two lamps were worked with single lamp work simultaneously.
Claims (5)
1. multi-light source illuminator for projectors, it is characterized in that device is made up of first light source (1), secondary light source (2), first negative lens (3), second negative lens (4), light-combining prism (5), collector lens group (6), colour wheel (7), lamp guide (8), illumination eyeglass and prism group (9), wherein first light source (1) projects light beam, earlier by behind first negative lens (3), project the first surface (51) of light-combining prism (5), ECDC light prism (5) first surface (51) reflection; Secondary light source (2) projects light beam, earlier by behind second negative lens (4), project the second surface (52) of light-combining prism (5), behind the light process light-combining prism (5), by directly outgoing of prism the 3rd surface (53), by the light of the light of prism first surface (51) reflection and prism the 3rd surface (53) outgoing by collector lens group (6), two light are converged at respectively near lamp guide (8) plane of incidence, by colour wheel (7) and lamp guide (8), penetrate light by lamp guide (8) exit facet, shine video picture device (10) through illumination eyeglass and prism group (9).
2. multi-light source illuminator for projectors according to claim 1 is characterized in that used first light source (1), secondary light source (2) are the convergent type light source.
3. multi-light source illuminator for projectors according to claim 1 is characterized in that light-combining prism (5) is coated with resistant to elevated temperatures highly reflecting films on first surface (51).
4. multi-light source illuminator for projectors according to claim 1, it is characterized in that the optical axis of optical axis, secondary light source (2) and second negative lens (4) composition that first light source (1) and first negative lens (3) are formed, all open certain distance with follow-up collector lens group (6), colour wheel (7) and the formed optical axis difference of lamp guide (8).
5. multi-light source illuminator for projectors according to claim 4, it is characterized in that first light source (1) and the optical axis of first negative lens (3) composition and the interval delta 1 of collector lens group (6), colour wheel (7) and the formed optical axis of lamp guide (8), secondary light source (2) and the optical axis of second negative lens (4) composition and the interval delta 2 of collector lens group (6), colour wheel (7) and the formed optical axis of lamp guide (8), its Δ 1 equates with Δ 2, and is symmetrical in collector lens group (6), colour wheel (7) and the formed optical axis of lamp guide (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100968702A CN101840143B (en) | 2009-03-19 | 2009-03-19 | Multi-light source illuminator for projectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100968702A CN101840143B (en) | 2009-03-19 | 2009-03-19 | Multi-light source illuminator for projectors |
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| Publication Number | Publication Date |
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| CN101840143A CN101840143A (en) | 2010-09-22 |
| CN101840143B true CN101840143B (en) | 2011-08-24 |
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| CN2009100968702A Expired - Fee Related CN101840143B (en) | 2009-03-19 | 2009-03-19 | Multi-light source illuminator for projectors |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104991406B (en) * | 2011-11-10 | 2017-01-25 | 深圳市光峰光电技术有限公司 | Light source system, lighting device and projection device |
| CN103674006B (en) * | 2012-09-07 | 2016-03-30 | 中国航空工业第六一八研究所 | The integrated Multiplexing apparatus of a kind of laser gyro and conjunction light method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078862A (en) * | 2006-05-24 | 2007-11-28 | 台达电子工业股份有限公司 | Multiple light source projection device and its light-converging module |
| CN101093286A (en) * | 2006-06-19 | 2007-12-26 | 精碟科技股份有限公司 | Composite light module, and projecting unit |
| CN100383660C (en) * | 2003-01-22 | 2008-04-23 | 三洋电机株式会社 | Lighting device and projection image display |
| CN201134006Y (en) * | 2007-11-08 | 2008-10-15 | 北京中视中科光电技术有限公司 | Light source for projection system and projection display device |
| CN201408319Y (en) * | 2009-03-19 | 2010-02-17 | 杭州三花科特光电有限公司 | Multi-light source lighting device for projection machine |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383660C (en) * | 2003-01-22 | 2008-04-23 | 三洋电机株式会社 | Lighting device and projection image display |
| CN101078862A (en) * | 2006-05-24 | 2007-11-28 | 台达电子工业股份有限公司 | Multiple light source projection device and its light-converging module |
| CN101093286A (en) * | 2006-06-19 | 2007-12-26 | 精碟科技股份有限公司 | Composite light module, and projecting unit |
| CN201134006Y (en) * | 2007-11-08 | 2008-10-15 | 北京中视中科光电技术有限公司 | Light source for projection system and projection display device |
| CN201408319Y (en) * | 2009-03-19 | 2010-02-17 | 杭州三花科特光电有限公司 | Multi-light source lighting device for projection machine |
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| CN101840143A (en) | 2010-09-22 |
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