CN101131531A - Projector with laser LED as its light source and light source device thereof - Google Patents
Projector with laser LED as its light source and light source device thereof Download PDFInfo
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- CN101131531A CN101131531A CNA200610109901XA CN200610109901A CN101131531A CN 101131531 A CN101131531 A CN 101131531A CN A200610109901X A CNA200610109901X A CN A200610109901XA CN 200610109901 A CN200610109901 A CN 200610109901A CN 101131531 A CN101131531 A CN 101131531A
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Abstract
This invention is a sort of single-disc panel projection which uses the laser LED to be the power, it consists of a laser LED power at least, a extender groupware at least, a composing light set, a leading light groupware, a prism group, a figure micro-lens display unit, and a projection lens group. It uses the small diameter laser bean of primary colors with the red, the green, and the blue which is produced by the laser LED, after the laser bean is to be magnified, combined the light, and transmitted the light by the extender groupware, the combining light set, and the leading set. It makes the bean of light to cast to the display unit of the numeral micro-lens by the prism group, after the image of the display unit of the numeral micro-lens is refracted to the projection lens and fabricated, it is cast to the outside. This invention attains this excellence in that: its image quality is sharper, its image is more vivid, its color is more saturated, its bulk is small, its power consumption is few, its feedback is fast, its life-span is long, and its efficiency is high, and so on by the laser LED.
Description
Technical field
What the present invention relates to is a kind of projector and light supply apparatus thereof, be particularly related to be a kind of be light source with the laser LED, utilize one to expand when tread assembly makes its laser beam by described expansion tread assembly and light beam can be expanded to a certain degree scope, and can be used in the one chip panel projector as its light supply apparatus.
Background technology
Along with making rapid progress of science and technology epoch, information electronic product miscellaneous and equipment in response to and give birth to, and various product spare part all strides forward towards compact target, how to make product have more hommization, the Human Engineering that meets more easy to carry, meet consumer's demand easily, be the main problem of existing market one of.
China is opto-electronics flourish during the last ten years in the past, set up quite sturdy optical design, emulation, processing procedure, and the experience and the technology of spectrum test, and therefore developing microminiaturized optical electron product should describedly have very big advantage backward.Gently, thin, short, little, cost is low is the trend of electronic product development in modern age, many electronic products are by at electronic hardware, significantly improving of computing machine, microprocessor, and upgrading their looks with surprising change speed, and microminiaturized optical electron product will have very large development potentiality.For example, the frequent bulletin machine that uses of business circles, the technology that takes concerted action constantly promotes, not only laptop computer is more and more lighter and handier, how with the relative reduced volume of optical projection brief report system of arranging in pairs or groups and using, more strengthening the saturation degree and the luminous intensity of its color, and significantly improve the problem of image quality vividness, is that relevant industry is wanted the target pursued always.
In general, projector be adopt tungsten halogen lamp, metal halide lamp, ultrahigh pressure mercury lamp or xenon lamp one of them as its light source.Above light source is except respectively having the relative merits, truly have that overheated, the high power consumption of common light source, low bulb life, volume are excessive, Heavy Weight, with shortcoming such as not portable.Therefore, once the someone studied with relatively low power consumption in recent years, thermal value is less, volume is less and the life-span is used as light source of projector than long traditional light emitting diode (LED).Yet, by be limited in the optical characteristics of traditional LED, with and be the illumination mode of one way or another scattering everywhere, make this type of use traditional LED not only relative relatively poor on the color saturation of its image, vividness and image quality sharpness as the existing projector of light supply apparatus, and also the illumination mode because of traditional LED scattering everywhere causes the reduction of its light utilization ratio, and then causes the projection brightness of projector also can't further promote.Therefore, in Market Consumer now to the resolution of projector and image quality demand day by day under the trend of rising, it is more compact with projector's design how to go to meet consumer demand, have that image quality is better, color is more bright-coloured, the light source output of more stable and high brightness, be one of important subject of development of present industry.
Summary of the invention
Purpose of the present invention, be to provide a kind of with the projector and the light supply apparatus thereof of laser LED as light supply apparatus, utilize an expansion tread assembly that the minor diameter laser beam that laser LED produced is expanded into to a certain degree scope, use with light supply apparatus as projector.So, just can have that light beam is concentrated and the optical characteristics of adjustable lay the grain polarization phase because of the minor diameter laser beam that laser LED produced, and make the described laser LED light supply apparatus of projector can provide that image quality is sharper keen, color is more bright-coloured, with the higher effect of color saturation.
In order to achieve the above object, it is the projector of light supply apparatus with the laser LED that the present invention provides a kind of, and it includes: at least one laser LED light source, a Multiplexing apparatus, at least one expansion tread assembly, a leaded light component, a prism group, a digital micro-mirror display device and a projection lens group.Wherein, described laser LED light source is the laser beam that can produce the different colours of Red Green Blue respectively, this three primary colors light beam is integrated into same optical axis by described Multiplexing apparatus with the laser beam of the different colours of its Red Green Blue respectively to be become and closes the light light beam, and then the described light light beam that closes is incident upon on the described expansion tread assembly, and to amplify angle with preferable transmission be that 30 degree are to can describedly closing the expansion of light light beam projected area between 60 degree.Simultaneously, the light light beam that closes after using described leaded light component to enlarge is incorporated in the limited range, make the described light light beam that closes to be an even light and concentrated to export described prism group to, and be projected on the described digital micro-mirror display device, and the micro mirror on the digital micro-mirror display device is constituted picture with digital form, again its image is projected to outside the projector via described projection lens group.
Description of drawings
Fig. 1 is that the present invention is with the light path synoptic diagram of laser LED as first preferred embodiment of the projector of light supply apparatus;
Fig. 2 A, 2B are respectively the present invention to expand two kinds of preferred angle synoptic diagram that tread assembly amplifies the beam spread of laser LED light source;
Fig. 3 A～3D is the concrete structure figure of some alternate embodiment of expansion tread assembly of the present invention;
Fig. 4 is that the present invention is with the light path synoptic diagram of laser LED as second preferred embodiment of the projector of light supply apparatus;
Fig. 5 is that the present invention is with the light path synoptic diagram of laser LED as the 3rd preferred embodiment of the projector of light supply apparatus.
Description of reference numerals: 10-laser LED light source; The red laser LED of 10a-; The green laser LED of 10b-; The blue laser LED of 10c-; 20～20f-expands tread assembly; 21c～21f-the plane of incidence; 22c～22f-exit facet; The 30-Multiplexing apparatus; The 40-leaded light component; 41-light harvesting conduit; 42-light harvesting eyeglass; 43-micro mirror array; 50-prism group; 60-digital micro-mirror display device; 70-projection lens group.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
See also shown in Figure 1, be for the present invention with the light path synoptic diagram of laser LED as first preferred embodiment of the projector of light supply apparatus.Wherein, described projector mainly includes: at least one laser LED (LaserLight Emitting Diode) light source 10, at least one expansion tread assembly 20, a Multiplexing apparatus (Cross Type ColorFilter) 30, one leaded light component 40, a prism group 50, a digital micro-mirror display device DMD (DigitalMicromirror Device) 60 and one projection lens group 70 combine.
In the present embodiment, described laser LED light source 10 is to include three groups of laser LEDs (10a, 10b, 10c) that can produce the different spectrum of red, green, blue (R, G, B) three primary colors respectively to constitute.By the characteristics of luminescence in laser LED (10a, 10b, 10c) uniqueness, its light source that sends is not only be the small diameter optical beam in the parallel set, and is had more the optical characteristics of adjustable lay the grain polarization phase (just the light polarization phase place comparatively accurately and does not have veiling glare).
The minor diameter parallel beam that projected of three primary colors laser LED (10a, 10b, 10c) thus, by its pairing expansion tread assembly 20 its each other red, green, blue (R, G, B) three primary colors light beam is enlarged to a certain degree areal extent respectively, so with its expand red, green, blue out of the ordinary (R, G, B) three primary colors light beam behind the bundle import described Multiplexing apparatus 30 in.Utilize the polariscope of two inner set vertical interlaceds of described Multiplexing apparatus 30, respectively red, green, blue out of the ordinary (R, G, B) primaries constriction is synthesized same optical axis close the light light beam, be incident upon described leaded light component 40 in.Simultaneously, will close the light light beam and be incorporated into refraction in 40 restricted portions of described leaded light component, can make it close the light light beam can eliminate its hot spot via described leaded light component 40, and is an even light state output, so be projected to described prism group 50 on.And, more corresponding with described leaded light component 40 by described prism group 50, the even light that described leaded light component 40 is reflected throw (Digital Micromirror Device) 60 on the described digital micro-mirror display device on.Wherein, described digital micro-mirror display device 60 is to be an image generation component, it can make the even light from described prism group 50 constitute image frame via the most micro mirrors (Micromirror Lens) on digital micro-mirror display device DMD 60 chips with digital form in the rear end of prism group 50.After, see through described prism group 50 again, the image light that is produced via digital micro-mirror display device 60 is folded to described projection lens group 70, and then image is projected the external world of projector by projection lens group 70.
Shown in figure 2A, 2B, be to be respectively the present invention to expand two kinds of preferred angle synoptic diagram that tread assembly amplifies the beam spread of laser LED light source.The minor diameter parallel beam of described laser LED light source 10 behind described expansion tread assembly 20a, 20b, can make its light beam expansion areal extent to a certain degree in projection.In the present invention, described expansion tread assembly 20a, 20b can be with lens arrangements that transparent material was constituted such as glass, plastics or acryl, and are to be situated between at 30 degree (for example shown in Fig. 2 A) to preferable between 60 degree (for example shown in Fig. 2 B) by described expansion tread assembly 20a, 20b with the amplification angle of the emergence angle of described light beam institute transmission.So, can satisfy described digital micro-mirror display device DMD 60 required light beam receiving areas and relevant for example brightness or the like of optical performance.
Shown in figure 3A, 3B, 3C, 3D, be concrete structure figure for some alternate embodiment of expansion tread assembly of the present invention.Wherein, as shown in Figure 3A, described expansion tread assembly 20c can be the glass (N with the BK7 model
D=1.516800; V
D=64.17) the concavees lens structure that material constituted, its plane of incidence 21 at light beam (that is left surface of Fig. 3 A) is to be the interior concave spherical surface (radius value be negative value represent its center of circle position left side at sphere) of a radius for-1.4mm, the exit facet 22 of light beam (that is right flank of Fig. 3 A) then is that a diameter is the plane of 2.8mm, extremely exist, the thickness t that expands tread assembly 20c then is 0.6mm.In Fig. 3 B, expand tread assembly 20d and be glass material equally and be to be convex lens structures, its plane of incidence 21d at light beam be for a diameter be that the protruding sphere (diameter value on the occasion of the right side of its position, center of circle of expression at sphere) of 2.8mm, plane and the thickness t that exit facet 22d is 2.8mm are to be 3.4mm.In Fig. 3 C, to be a radius then be 20mm for the-interior concave spherical surface of 2mm, exit facet 22e are a radius for-9.05846 protruding sphere, the thickness t that expands tread assembly 20e to the plane of incidence 21e that expands tread assembly 20e.In Fig. 3 D, the plane of incidence 21f that expands tread assembly 20f is that a radius is that protruding sphere, the exit facet 22f of 1.5mm is that a radius is that the protruding sphere of 10mm, the thickness t that expands tread assembly 20f then are 20mm.
Please refer to shown in Figure 4, be for the present invention with the light path synoptic diagram of laser LED as second preferred embodiment of the projector of light supply apparatus.Different laser LED light source (10a, 10b, 10c) projection of being about to the different spectrum of red, green, blue (R, G, B) three primary colors in first preferred embodiment earlier goes in other described expansion optical assembly 20 distinctly to expand bundle.This is created in second preferred embodiment, is to make the laser LED light source (10a, 10b, 10c) of the different spectrum of described three kinds of red, green, blues (R, G, B) three primary colors directly be incident upon in the described Multiplexing apparatus (Cross Type Color Filter) 30 in advance.Then, utilize described Multiplexing apparatus 30 that indivedual red, green, blues (R, G, B) primaries constriction is synthesized and close the light light beam at same optical axis, further be incident upon on the described expansion tread assembly 20 simultaneously, make it close light light beam expansion areal extent to a certain degree, and then be incident upon in the described leaded light component 40 at rear.Wherein, described leaded light component 40 can be a light harvesting conduit (Light Pipe) 41, and connect to one mutually with described expansion tread assembly 20, it can be incorporated into the light light beam that closes that expands behind the bundle in 41 limited ranges of described light harvesting conduit refraction and hot spot is eliminated, and then presents an even light state and be projected on the corresponding described prism group 50.The even light that described leaded light component 40 is reflected by described prism group 50 is incident upon after described digital micro-mirror display device 60 constitutes image frame again, by prism group 50 described image light is folded to described projection lens group 70 again and projects outside the projector.
Please refer to shown in Figure 5, be for the present invention with the light path synoptic diagram of laser LED as the 3rd preferred embodiment of the projector of light supply apparatus.By being similar substantially, so identical assembly and will repeating no more below the structure with second preferred embodiment shown in Figure 4 in the 3rd preferred embodiment shown in Figure 5.
Difference in the 3rd preferred embodiment shown in Figure 5 is that described leaded light component 40 more includes a light harvesting eyeglass 42 and 43 of micro mirror array MLA (Micromirror Lens Array) combine.Described light harvesting eyeglass 42 be for one the refraction be the number with the expansion tread assembly 20 corresponding (for example opposite) lens, and its position is corresponding in line with described expansion tread assembly 20, the light beam light harvesting and convert to and enlarge and parallel beam in addition that expands behind the bundle can be incident upon on the described micro mirror array 43 afterwards again.And use a plurality of lenticules set on the described micro mirror array 43 its expansion and parallel beam can be eliminated hot spot and be an even light and be projected on the described prism group 50.
In sum, proposed by the invention with the projector of laser LED as light supply apparatus, it uses by laser LED light source 10 and the collocation of expanding tread assembly 20, make the present invention can make full use of unique characteristics of luminescence of laser LED (10a, 10b, 10c), that is the light source that is sent is for the small diameter optical beam in the parallel set and has the optical characteristics of adjustable lay the grain polarization phase (just the light polarization phase place comparatively accurately and does not have veiling glare).Therefore, proposed by the invention with laser LED as the projector of light supply apparatus not only can reach color image distinct more saturated, the image sharpness is higher, the more traditional led light source of brightness is brighter and more can promote the purpose that the light transmittance efficiency of projector is utilized.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and also nonrestrictive.Those skilled in the art is understood, and in the spirit and scope that claim of the present invention limited, can carry out many changes to it, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (10)
1. laser LED light supply apparatus that is useful in projector is characterized in that it includes:
At least one laser LED light source is used to produce a parallel integrated light beam; And
At least one expansion tread assembly, it is corresponding to described laser LED light source, the parallel beam that described laser LED light source is produced is amplified the expansion bundle with a predetermined angle.
2. laser LED light supply apparatus as claimed in claim 1 is characterized in that, described laser LED light source has three laser LEDs, and it produces the parallel beam of Red Green Blue respectively.
3. laser LED light supply apparatus as claimed in claim 1 is characterized in that, described expansion tread assembly includes at least: convex lens or concavees lens both one of them.
4. laser LED light supply apparatus as claimed in claim 1 is characterized in that, described expansion tread assembly material be glass or transparent acrylic one of them.
5. laser LED light supply apparatus as claimed in claim 1 is characterized in that, the predetermined angle that bundle is expanded in the amplification of described expansion tread assembly is to be situated between at 30 degree between 60 degree.
6. laser LED light supply apparatus as claimed in claim 2 is characterized in that it also includes:
One Multiplexing apparatus is corresponding to described laser LED light source, the Red Green Blue light beam of described laser LED light source is assembled via described Multiplexing apparatus close the light light beam at same optical axis;
One leaded light component is corresponding with described expansion tread assembly, and the light light beam that closes that expands behind the bundle is incorporated in the limited range and reflects;
One prism group is corresponding with described leaded light component, will be folded to from the light beam of leaded light component;
One digital micro-mirror display device is corresponding with described prism group, accepts from the light beam of prism group and reflected back prism group again after producing image light; And
One projection lens group will be projected to the projector external world from described digital micro-mirror display device and the image light that is folded to out through described prism group.
7. laser LED light supply apparatus as claimed in claim 6 is characterized in that, described leaded light component be a light harvesting conduit or the combination of a light harvesting eyeglass and a micro mirror array both one of them.
8. as laser LED light supply apparatus as claimed in claim 6, it is characterized in that described micro mirror array is by comprising that a plurality of lenticules combine.
9. one kind with the projector of laser LED as light supply apparatus, it is characterized in that it includes:
At least one laser LED light source can be used for producing a parallel integrated light beam;
At least one expansion tread assembly is accepted parallel beam that described laser LED light source produced and is amplified with a predetermined angle to expand bundle;
One leaded light component is corresponding with described expansion tread assembly, the light beam behind the expansion bundle is incorporated in the limited range reflect;
One prism group is corresponding with described leaded light component, will be folded to from the light beam of leaded light component;
One digital micro-mirror display device is corresponding with described prism group, accepts from the light beam of prism group and reflected back prism group again after producing image light; And
One projection lens group will be projected to the projector external world from described digital micro-mirror display device and the image light that is folded to out through described prism group.
10. laser LED light supply apparatus that is useful in projector is characterized in that it includes:
At least one laser LED light source, it includes at least three laser LEDs and produces parallel beam respectively;
One Multiplexing apparatus is corresponding to each laser LED, the light beam that each laser LED produced can be assembled the parallel light light beam that closes at same optical axis; And,
At least one expansion tread assembly is corresponding to described Multiplexing apparatus, the parallel light light beam that closes from Multiplexing apparatus can be amplified the expansion bundle with one between 30 degree to the predetermined angle between 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610109901XA CN101131531A (en) | 2006-08-22 | 2006-08-22 | Projector with laser LED as its light source and light source device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610109901XA CN101131531A (en) | 2006-08-22 | 2006-08-22 | Projector with laser LED as its light source and light source device thereof |
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| CN101131531A true CN101131531A (en) | 2008-02-27 |
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| CNA200610109901XA Pending CN101131531A (en) | 2006-08-22 | 2006-08-22 | Projector with laser LED as its light source and light source device thereof |
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| CN101866097A (en) * | 2009-04-02 | 2010-10-20 | 通用汽车环球科技运作公司 | Ultra-Violet Laser wave beam on the full-windscreen head-up display |
| CN102174997A (en) * | 2011-01-14 | 2011-09-07 | 云南邦桥节能科技有限公司 | LED (light emitting diode) lamp |
| CN102213399A (en) * | 2010-04-02 | 2011-10-12 | 鸿富锦精密工业（深圳）有限公司 | Light conversion component, light source module and projector using light source module |
| US8052279B2 (en) | 2009-03-02 | 2011-11-08 | Hon Hai Precision Industry Co., Ltd. | Light source module and projector using same |
| CN101594522B (en) * | 2008-05-28 | 2011-12-14 | 北京中视中科光电技术有限公司 | Laser cable display system |
| WO2012089113A1 (en) * | 2010-12-30 | 2012-07-05 | Byd Company Limited | Prism system and projector comprising the same |
| CN102650730A (en) * | 2011-02-25 | 2012-08-29 | 比亚迪股份有限公司 | Prism system and projector with same |
| US8562173B1 (en) | 2012-05-21 | 2013-10-22 | Delta Electronics, Inc. | Illumination system |
| CN106125474A (en) * | 2016-08-31 | 2016-11-16 | 广州市赛普电子科技有限公司 | A kind of LED light engine for rear projection concatenation unit |
| CN106483598A (en) * | 2015-09-01 | 2017-03-08 | 鸿富锦精密工业（深圳）有限公司 | Light guide and include the Projection Display of this light guide and put |
| CN109521637A (en) * | 2018-11-28 | 2019-03-26 | 中国科学院合肥物质科学研究院 | A kind of laser projection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101594522B (en) * | 2008-05-28 | 2011-12-14 | 北京中视中科光电技术有限公司 | Laser cable display system |
| US8052279B2 (en) | 2009-03-02 | 2011-11-08 | Hon Hai Precision Industry Co., Ltd. | Light source module and projector using same |
| CN101866097B (en) * | 2009-04-02 | 2013-03-27 | 通用汽车环球科技运作公司 | Uv laser beamlett on full-windshield head-up display |
| CN101866097A (en) * | 2009-04-02 | 2010-10-20 | 通用汽车环球科技运作公司 | Ultra-Violet Laser wave beam on the full-windscreen head-up display |
| US8072686B2 (en) | 2009-04-02 | 2011-12-06 | GM Global Technology Operations LLC | UV laser beamlett on full-windshield head-up display |
| CN102213399A (en) * | 2010-04-02 | 2011-10-12 | 鸿富锦精密工业（深圳）有限公司 | Light conversion component, light source module and projector using light source module |
| CN102213399B (en) * | 2010-04-02 | 2015-04-08 | 鸿富锦精密工业（深圳）有限公司 | Projector |
| CN102565896B (en) * | 2010-12-30 | 2015-06-24 | 比亚迪股份有限公司 | Prism system and projector with same |
| CN102565896A (en) * | 2010-12-30 | 2012-07-11 | 比亚迪股份有限公司 | Prism system and projector with same |
| WO2012089113A1 (en) * | 2010-12-30 | 2012-07-05 | Byd Company Limited | Prism system and projector comprising the same |
| CN102174997A (en) * | 2011-01-14 | 2011-09-07 | 云南邦桥节能科技有限公司 | LED (light emitting diode) lamp |
| CN102650730A (en) * | 2011-02-25 | 2012-08-29 | 比亚迪股份有限公司 | Prism system and projector with same |
| CN102650730B (en) * | 2011-02-25 | 2016-04-27 | 比亚迪股份有限公司 | A kind of prism system and there is the projector of this prism system |
| US8562173B1 (en) | 2012-05-21 | 2013-10-22 | Delta Electronics, Inc. | Illumination system |
| CN106483598A (en) * | 2015-09-01 | 2017-03-08 | 鸿富锦精密工业（深圳）有限公司 | Light guide and include the Projection Display of this light guide and put |
| CN106125474A (en) * | 2016-08-31 | 2016-11-16 | 广州市赛普电子科技有限公司 | A kind of LED light engine for rear projection concatenation unit |
| CN109521637A (en) * | 2018-11-28 | 2019-03-26 | 中国科学院合肥物质科学研究院 | A kind of laser projection system |
| CN109521637B (en) * | 2018-11-28 | 2020-12-29 | 中国科学院合肥物质科学研究院 | Laser projection system |
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Owner name: HONGFUJIN PRECISION INDUSTRY (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: PULIER SCI-TECH CO., LTD. Effective date: 20090522 |
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Effective date of registration: 20090522 Address after: 2, Dong Huan two road, tenth Industrial Zone, Longhua Town, Baoan District, Guangdong, Shenzhen Province, China: 518109 Applicant after: Fujin Precision Industry (Shenzhen) Co., Ltd. Co-applicant after: Hon Hai Precision Industry Co., Ltd. Address before: Taiwan, China Applicant before: Pulier Science and Technology Co., Ltd. |
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