CN101487928A - Three-color mixed light source component and projection system - Google Patents
Three-color mixed light source component and projection system Download PDFInfo
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- CN101487928A CN101487928A CNA2008100651986A CN200810065198A CN101487928A CN 101487928 A CN101487928 A CN 101487928A CN A2008100651986 A CNA2008100651986 A CN A2008100651986A CN 200810065198 A CN200810065198 A CN 200810065198A CN 101487928 A CN101487928 A CN 101487928A
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Abstract
The invention provides a three-colour blending light source component. A laser light source and an LED light source are blended to form an RGB three-colour light source, and a two-colour laser light source is blended with an LED light source in the other colour, thus obtaining a colorful projection lighting source having good brightness and the advantages that the laser coherence is obviously weakened and heat productivity and cost are reduced; or a two-colour LED light source is blended with a laser light source in the other colour, thus obtaining a projection lighting source which is better in brightness and richer in colour with negligible laser coherence compared with the three-colour LED light source. The projection system adopting the three-colour blending light source component can improve display image quality and effectively reduce image speckle.
Description
Technical field
The present invention relates to the projection display technique field, the optical projection system that is specifically related to be used for the lighting source of Projection Display and uses this lighting source.
Background technology
Lighting source is one of LCD liquid crystal, DLP digital micro-mirror and LCOS liquid crystal projector important components, and its brightness, light utilization efficiency and thermal value directly have influence on problems such as the power consumption, projector's operation and maintenance cost of quality, the projector of projected image.In the past, most of projectors all adopt UHP (ultrahigh pressure mercury lamp) or Metal halogen lamp as light source, though this class light source brightness can meet the demands, but its power consumption high life is short, light conversion efficiency is lower, and thermal value is big, and can pollute environment, therefore not to be well suited for as projection light source its substitute of people's active development.
LED (light emitting diode) technology developed recently is rapid, has occurred successively in Chinese patent storehouse and the United States Patent (USP) storehouse in a large number about redgreenblue LED, white light LEDs and LED area source (led array) patent as the projection lighting light source.The LED light fixture has advantages such as the low good reliability of the little cost of volume, can bigger raising light utilization efficiency in optical projection system, and it has brought good solution for the optical projection system lighting source.
Laser is also more and more caused attracting attention of optics research staff as lighting source because laser have high brightness, monochromaticity good, disperse advantages such as solid angle is little, these are that led light source is incomparable.The redgreenblue laser coupled is gone into optical projection system, can bring the good display frame of brightness bright in luster, some companies have also applied for containing the demonstration patent of three LASER Light Source of RGB or laser array light source in view of the above, for example Chinese patent 200410069055.4,200610042446.6,200620119438.2 and United States Patent (USP) 6975659,7296897.
In above lighting source, laser technology has development potentiality beyond doubt most.But have several insoluble problems in the optical projection system with the illumination of three LASER Light Source of RGB, for example the laser generates heat amount is big, the image speckle that causes because of the coherence of laser etc.Adopt a plurality of laser instruments to make light source in addition and with respect to the LED lamp, increased a lot of costs.
Summary of the invention
The optical projection system that the invention provides a kind of three-color mixed light source component and adopt this three-color mixed light source component is to overcome above-mentioned defective.This three-color mixed light source component is mixed by LASER Light Source and led light source, and it has good brightness and weakened the coherence with respect to three looks full LASER Light Source, has also reduced thermal value, has reduced cost.Adopt the optical projection system of this three-color mixed light source component can project the good image frame of light bright in luster, eliminated more image speckle because of the generation of laser correlativity.
Three-color mixed light source component of the present invention is by the following technical solutions:
A kind of three-color mixed light source component, comprise three light sources of RGB and respectively this light source is focused on the optical element of shaping homogenize, a light source is a LASER Light Source in three light sources of described RGB, and a light source is a led light source, and another light source is LASER Light Source or led light source.
Wherein, described red light source is a LASER Light Source, and green light source is a LASER Light Source, and blue-light source is a led light source.
Perhaps, described red light source is a led light source, and green light source is a LASER Light Source, and blue-light source is LASER Light Source or led light source.
Perhaps, described red light source is a LASER Light Source, and green light source is a led light source, and blue-light source is LASER Light Source or led light source.
Perhaps, described red light source is a led light source, and green light source is a led light source, and blue-light source is a LASER Light Source.
Described LASER Light Source is single laser light source or the array light source that formed by a plurality of lasing fluorescence chips.
Described led light source is single led light source or the array light source that formed by a plurality of LED luminescence chips.
Include in condenser lens, microlens array, the photoconductive tube one or more in the described optical element.
The technical scheme that optical projection system of the present invention adopts is:
A kind of optical projection system comprises dividing-mixing optical system, display chip and projecting lens, and this optical projection system also comprises above-described three-color mixed light source component.
Wherein, described display chip can be any among three types of LCD, LCOS and the DLP.
Described display chip number is monolithic or two or three.
Compared to prior art, the invention has the advantages that:
(1) this three-color mixed light source component is mixed by LASER Light Source and led light source, and it has higher brightness with respect to three looks full led light source, has improved light utilization efficiency, has reduced power consumption; It is with respect to three looks full LASER Light Source, and the coherence who has weakened laser has largely reduced the thermal value of light source, and cost has also obtained reduction.
(2) adopt the optical projection system of above-mentioned three-color mixed light source component can project the good image frame of light bright in luster, this can not compare than three looks full led light source optical projection system, more important is that it has eliminated more image speckle because of the laser coherence generation, and display quality is better than three looks full LASER Light Source optical projection system.
(3) led light source among the present invention can be the array light source of a plurality of LED luminescence chips formation, even LASER Light Source can be the array light source that a plurality of lasing fluorescence chips form also, can obtain the more uniform more illumination light of high brightness so undoubtedly.The array LASER Light Source can solve the problem of laser coherence well in addition.
Description of drawings
Fig. 1 is the synoptic diagram of three-color mixed light source component embodiment one of the present invention and optical projection system (adopting single LCOS display chip).
Fig. 2 is the synoptic diagram of three-color mixed light source component embodiment two and optical projection system (adopting the DLP digital micro-mirror device).
Fig. 3 is the synoptic diagram of three-color mixed light source component embodiment three and optical projection system (adopting the transmission type LCD chip).
Fig. 4 is the synoptic diagram of three-color mixed light source component embodiment four and optical projection system (adopting two LCOS display chips).
Fig. 5 is the synoptic diagram of three-color mixed light source component embodiment five and optical projection system (adopting two LCD display chips).
Fig. 6 is the synoptic diagram of three-color mixed light source component embodiment six and optical projection system (adopting three LCOS display chips).
Fig. 7 is another embodiment synoptic diagram of the optical projection system of two LCOS display chips of employing and three-color mixed light source component.
Fig. 8 is that the another kind of embodiment of optical projection system of the present invention (adopts the synoptic diagram of three transmission type LCD display chips.
Fig. 9 is the synoptic diagram of a kind of embodiment of laser array formula light source of the present invention.
Figure 10 is the synoptic diagram of a kind of embodiment of led array formula light source of the present invention.
Illustrate: mark R, G, B and r, g, b in the accompanying drawing represent red light source, green light source, blue-light source respectively, Da Xie letter representation LASER Light Source wherein, the letter representation led light source of small letter.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Three-color mixed light source component provided by the invention, mix mutually by LASER Light Source and led light source and to constitute the redgreenblue light source, in the dichromatism LASER Light Source, be mixed into another look led light source, can obtain laser coherence is significantly weakened, thermal value and cost all are reduced, the bright projection lighting light source of good brightness; Perhaps in the dichromatism led light source, be mixed into another look LASER Light Source, can obtain higher than the three-color LED light-source brightness, color is abundanter, laser coherence influences negligible projection light source.Adopt the optical projection system image quality of this three-color mixed light source component to be enhanced, effectively reduced the image speckle.
Learn easily, described three-color mixed light source component can produce the arranging scheme of six kinds of colors and light source, six kinds of embodiments are promptly arranged, the employed micro display chip of optical projection system of making lighting source with this three-color mixed light source component can be LCOS, LCD and DLP (containing digital micro-mirror device DMD), the micro display chip number that adopts can be monolithic or two or three, and simultaneously, variation also can be adjusted in the position of redgreenblue light source, like this, this optical projection system has some kinds of embodiments.The present invention specifically lists following examples:
Embodiment one: as shown in Figure 1, this three-color mixed light source component comprises red laser light source 1R, green laser light source 1G and blue led light source 1b, be equipped with in each light source the place ahead light beam is focused on or collimates, and the optical element of shaping homogenize, it can be single focus lamp or microlens array, perhaps this optical element also includes photoconductive tube (light integrating rod), these optical elements belong to prior art or common practise, and are therefore not shown in the accompanying drawings or do not mark.Fig. 1 shows the optical projection system that adopts this embodiment three-color mixed light source component simultaneously, it comprises dividing-mixing optical system, display chip and projecting lens 5, dividing-mixing optical system has adopted 2 and polarizing beam splitters 3 of a light-combining prism (X-cube) in the present embodiment, described display chip is a Monolithic LC OS liquid crystal panel 4, redgreenblue light source 1R, 1G, 1b send and inject polarizing beam splitter 3 after light ECDC light prism 2 synthesizes, polarizing beam splitter 3 is told a part of light and is offered 4 modulation of LCOS liquid crystal panel, and final output image light is through projecting lens 5 outputs.
Embodiment two: as shown in Figure 2, this three-color mixed light source component comprises red LED light source 1r, green laser light source 1G, blue led light source 1b, the optical projection system that contains this light source assembly has been used a DMD (being the DLP display device) 4e, and light-combining prism 2, catoptron 8 and projecting lens 5, three-color light source is centered around three of light-combining prism 2, send light ECDC light prism 2 and be combined into a branch of smooth toward mirror 8, catoptron 8 reflects incident light to DMD4e, the DMD4e subject image signal drives output image light, outputs on the external screen from projecting lens 5 at last.
Embodiment three: as shown in Figure 3, this three-color mixed light source component comprises red LED light source 1r, green laser light source 1G, blue laser light source 1B, optical projection system uses a transmission type LCD display chip as photomodulator in the present embodiment, also adopted two dichroscopes, concrete light path is: inject LCD assembly 4k behind red LED light source 1r output light transmission dichroscope 6 and the dichroscope 7; Blue laser light source 1B output light is given dichroscope 7 through dichroscope 6 reflections, transmits from dichroscope 7 then and enters LCD assembly 4k; Green laser light source 1G output light enters LCD assembly 4k after dichroscope 7 reflections.LCD assembly 4k comprises LCD display chip and other optical device, for example beam expander, focus lamp, polaroid or optical filter, and LCD assembly 4k modulation is injected light output image light and is given projecting lens 5.
Embodiment four: as shown in Figure 4, this three-color mixed light source component comprises red laser light source 1R, green LED light source 1g, blue led light source 1b, optical projection system uses two LCOS liquid crystal panels as photomodulator in the present embodiment, also used a light-combining prism 2 and a polarizing beam splitter 3 to form dividing-mixing optical system, concrete light path is: redgreenblue light source 1R, 1g, 1b sends light ECDC light prism 2 respectively and is combined into a branch of light and injects polarizing beam splitter 3, polarizing beam splitter 3 is divided into two bundle polarized lights with incident light, flow to LCOS liquid crystal panel 4a respectively, 4b modulates, and two LCOS liquid crystal panel output image light are directive projecting lens 5 after polarizing beam splitter 3 synthesizes.
Embodiment five: as shown in Figure 5, this three-color mixed light source component comprises red LED light source 1r, green LED light source 1g, blue laser light source 1B, optical projection system uses two transmission type LCD display chips, dividing-mixing optical system to use a light-combining prism 2, two polarizing beam splitter 3a and 3b, two catoptrons 9 and 10 in the present embodiment.Concrete light path is: redgreenblue light source 1r, 1g, 1B output light are injected polarizing beam splitter 3a after being synthesized by light-combining prism 2, light beam is divided into two bundle polarized lights, a branch of polarized light directive LCD4c modulates, another bundle polarized light directive LCD4d modulates, and LCD4c and 4d output image light are respectively synthesized back directive projecting lens 5 by two catoptrons 9,10 and polarizing beam splitter 3b.
Embodiment six: as shown in Figure 6, this three-color mixed light source component comprises red laser light source 1R, green LED light source 1g, blue laser light source 1B, three light sources are by parallel placement, conversion can be adjusted in the position, optical projection system adopts three LCOS liquid crystal panel 4f, 4g, 4h in the present embodiment, dividing-mixing optical system adopts catoptron 11, dichroscope 12 and 13, polarization spectro assembly 14, and this polarization spectro assembly 14 is combined soon by two polarizing beam splitters and an optical path compensation.The general light path of present embodiment is: inject polarization spectro assembly 14 after three coloured light are synthesized, the polarized light of telling is converted to image light by three LCOS liquid crystal panel 4f, 4g, 4h respectively, is synthesized at last through projecting lens 5 outputs.Because those skilled in the art are not difficult to find out this system's projection theory, the Therefore, omited is to the detailed description of present embodiment projecting light path.
Provided the embodiment of six kinds of arranging schemes of light source colour and light source type above, for three-color mixed light source component, when it is applied to optical projection system, the putting position of each color light source can suitably be adjusted replacement, for example be arranged in parallel or around arranging or relative position changes, only need add some in optical projection system closes light light-splitting device or catoptron, makes it satisfy the projection lighting demand and gets final product.Certainly when putting, light source position also it is also noted that the physical characteristics of light source itself, for example two LASER Light Source can not be provided with relatively in opposite directions, because during the laser ECDC optical device of light source output, have the lasing fluorescence chip of another light source of residual light directive, cause the LASER Light Source damage.
Fig. 7 is the simple case that above-mentioned light source assembly changes, optical projection system the same with among Fig. 4 among this figure, adopt two LCOS liquid crystal panel 4a, 4b is as display chip, dividing-mixing optical system comprises light-combining prism 2 and polarizing beam splitter 3, different is, three-color mixed light source component is red laser light source 1R, green laser light source 1G and blue led light source 1b, the position of three-color light source is also adjusted, wherein, green laser light source 1G and blue led light source 1b are oppositely arranged on the two sides of light-combining prism 2, red laser light source 1R is positioned at light-combining prism 2 another sides, and the optical axis of this red laser light source 1R and light-combining prism 2, polarizing beam splitter 3, on the same line of optical axis of LCOS liquid crystal panel 4b.
Please refer to Fig. 8, another kind of embodiment for optical projection system of the present invention, this optical projection system has adopted three transmission type LCD display chips 41,4m, 4n, and three-color mixed light source component is red LED light source 1r, green laser light source 1G, blue laser light source 1B.Green laser light source 1G output light is through catoptron 9 reflection back lighting LCD display chips 41, blue laser light source 1B direct illumination LCD display chip 4m, red LED light source 1r output light is through catoptron 10 reflection back lighting LCD display chip 4n, and the image light of generation flows to projecting lens 5 after being synthesized by light-combining prism 2.
Special declaration, three-color mixed light source component of the present invention includes each light source is focused on or collimates, the optical element of shaping homogenize, it can be in condenser lens, microlens array, the photoconductive tube one or more, this optical element belongs to prior art or common practise, and is therefore not shown in the accompanying drawings or do not mark.
The LASER Light Source that this three-color mixed light source component adopts can be single laser light source or the array light source that is formed by a plurality of lasing fluorescence chips, and as shown in Figure 9, a plurality of laser chips are linear array and are arranged on the heat-radiating substrate.This laser array formula light source also can be square array or rectangular array, to form the better lasing area light source of luminous uniform luminance.Array laser can effectively solve the problem of laser coherence in addition.
In like manner, the led light source that this three-color mixed light source component adopts can be single led light source or the array light source that is formed by a plurality of LED luminescence chips, as shown in figure 10, a plurality of LED luminescence chips are square and are arranged on the substrate, to form the better LED area source of luminous uniform luminance.Certainly, a plurality of LED luminescence chip also can the linear array setting.
Three-color mixed light source component of the present invention and adopt the optical projection system of this three-color mixed light source component to be not limited to above embodiment.Any modification or local replacement that does not break away from spirit of the present invention all is encompassed among the protection domain of the present invention.
Claims (11)
1. three-color mixed light source component, comprise three light sources of RGB and respectively this light source is focused on the optical element of shaping homogenize, it is characterized in that: a light source is a LASER Light Source in three light sources of described RGB, a light source is a led light source, and another light source is LASER Light Source or led light source.
2. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: described red light source is a LASER Light Source, and green light source is a LASER Light Source, and blue-light source is a led light source.
3. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: described red light source is a led light source, and green light source is a LASER Light Source, and blue-light source is LASER Light Source or led light source.
4. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: described red light source is a LASER Light Source, and green light source is a led light source, and blue-light source is LASER Light Source or led light source.
5. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: described red light source is a led light source, and green light source is a led light source, and blue-light source is a LASER Light Source.
6. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: described LASER Light Source is single laser light source or the array light source that formed by a plurality of lasing fluorescence chips.
7. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: described led light source is single led light source or the array light source that formed by a plurality of LED luminescence chips.
8. a kind of three-color mixed light source component as claimed in claim 1 is characterized in that: include in condenser lens, microlens array, the photoconductive tube one or more in the described optical element.
9. an optical projection system comprises dividing-mixing optical system, display chip and projecting lens, it is characterized in that: this optical projection system also comprises as any described three-color mixed light source component in the claim 1 to 8.
10. a kind of optical projection system as claimed in claim 9 is characterized in that: described display chip is any among three types of LCD, LCOS and the DLP.
11. a kind of optical projection system as claimed in claim 9 is characterized in that: described display chip number is monolithic or two or three.
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| CNA2008100651986A CN101487928A (en) | 2008-01-15 | 2008-01-15 | Three-color mixed light source component and projection system |
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| CNA2008100651986A CN101487928A (en) | 2008-01-15 | 2008-01-15 | Three-color mixed light source component and projection system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102411206A (en) * | 2010-09-23 | 2012-04-11 | 鸿富锦精密工业（深圳）有限公司 | Projection system |
| WO2012068725A1 (en) * | 2010-11-24 | 2012-05-31 | 青岛海信信芯科技有限公司 | Light source for projectors, projector, and television |
| CN102621791A (en) * | 2012-04-20 | 2012-08-01 | 杭州研明光电技术有限公司 | Mixed-light-source liquid-crystal projection light engine system |
| WO2012129788A1 (en) * | 2011-03-30 | 2012-10-04 | 青岛海信信芯科技有限公司 | Laser projection light source module and projection apparatus |
| CN102799057A (en) * | 2012-08-07 | 2012-11-28 | 华中科技大学 | High-brightness mixed white light source using solid green laser, red LED and blue LED |
| CN110262174A (en) * | 2019-06-14 | 2019-09-20 | 山西莱柏莱特电子科技有限公司 | A kind of laser projection dissipation spot light path device widened based on wavestrip |
| CN111722463A (en) * | 2019-03-20 | 2020-09-29 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN111837073A (en) * | 2018-03-20 | 2020-10-27 | 索尼公司 | Image display apparatus |
| CN113395499A (en) * | 2020-03-13 | 2021-09-14 | 卡西欧计算机株式会社 | Image data processing method, projection apparatus, and image data processing apparatus |
| CN114280883A (en) * | 2022-01-13 | 2022-04-05 | 北京数字光芯科技有限公司 | Projection structure and projection method capable of improving red light efficiency |
| CN114967311A (en) * | 2022-04-28 | 2022-08-30 | 歌尔光学科技有限公司 | Projection system and electronic equipment |
| US12078814B2 (en) | 2019-03-20 | 2024-09-03 | Hisense Laser Display Co., Ltd. | Laser projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102411206A (en) * | 2010-09-23 | 2012-04-11 | 鸿富锦精密工业（深圳）有限公司 | Projection system |
| WO2012068725A1 (en) * | 2010-11-24 | 2012-05-31 | 青岛海信信芯科技有限公司 | Light source for projectors, projector, and television |
| CN103052911A (en) * | 2010-11-24 | 2013-04-17 | 青岛海信信芯科技有限公司 | Light Source For Projectors, Projector, And Television |
| CN103052911B (en) * | 2010-11-24 | 2016-09-28 | 青岛海信电器股份有限公司 | Light source of projector, scialyscope and television set |
| WO2012129788A1 (en) * | 2011-03-30 | 2012-10-04 | 青岛海信信芯科技有限公司 | Laser projection light source module and projection apparatus |
| CN102621791A (en) * | 2012-04-20 | 2012-08-01 | 杭州研明光电技术有限公司 | Mixed-light-source liquid-crystal projection light engine system |
| CN102799057A (en) * | 2012-08-07 | 2012-11-28 | 华中科技大学 | High-brightness mixed white light source using solid green laser, red LED and blue LED |
| CN111837073B (en) * | 2018-03-20 | 2022-10-11 | 索尼公司 | Image display apparatus |
| US11953699B2 (en) | 2018-03-20 | 2024-04-09 | Sony Group Corporation | Image display apparatus |
| CN111837073A (en) * | 2018-03-20 | 2020-10-27 | 索尼公司 | Image display apparatus |
| CN111722463A (en) * | 2019-03-20 | 2020-09-29 | 青岛海信激光显示股份有限公司 | Laser projection device |
| US12078814B2 (en) | 2019-03-20 | 2024-09-03 | Hisense Laser Display Co., Ltd. | Laser projector |
| CN110262174A (en) * | 2019-06-14 | 2019-09-20 | 山西莱柏莱特电子科技有限公司 | A kind of laser projection dissipation spot light path device widened based on wavestrip |
| CN113395499A (en) * | 2020-03-13 | 2021-09-14 | 卡西欧计算机株式会社 | Image data processing method, projection apparatus, and image data processing apparatus |
| CN114280883A (en) * | 2022-01-13 | 2022-04-05 | 北京数字光芯科技有限公司 | Projection structure and projection method capable of improving red light efficiency |
| CN114280883B (en) * | 2022-01-13 | 2024-01-12 | 北京数字光芯科技有限公司 | Projection structure and projection method capable of improving red light efficiency |
| CN114967311A (en) * | 2022-04-28 | 2022-08-30 | 歌尔光学科技有限公司 | Projection system and electronic equipment |
| CN114967311B (en) * | 2022-04-28 | 2023-10-20 | 歌尔光学科技有限公司 | Projection system and electronic equipment |
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