CN102736382A - Projection optical engine with laser-LED hybrid light source - Google Patents
Projection optical engine with laser-LED hybrid light source Download PDFInfo
- Publication number
- CN102736382A CN102736382A CN2011100927339A CN201110092733A CN102736382A CN 102736382 A CN102736382 A CN 102736382A CN 2011100927339 A CN2011100927339 A CN 2011100927339A CN 201110092733 A CN201110092733 A CN 201110092733A CN 102736382 A CN102736382 A CN 102736382A
- Authority
- CN
- China
- Prior art keywords
- laser
- light source
- led
- blue
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Projection Apparatus (AREA)
Abstract
Provided in the invention is a projection optical engine with a laser-LED hybrid light source. The projection optical engine is formed by a hybrid light source module, an optical light path unit, a display driver module, an ultra-wide viewing angle lens, a radiating module and a manual focusing wheel and the like. More specifically, the light source unit of the hybrid light source module includes a red LED array, green laser, blue laser, and a blue laser diode array+blue LED array. According to a whole light source scheme utilizing the green laser, the red LED array and the blue laser diode array+blue LED array, when the laser and the LED light are guided to be mixed, decoherence processing is also carried out on the laser, thereby removing an independent a decoherence device; meanwhile, a red-green-blue light source is added based on a single-chip DLP technology, thereby removing a color wheel required by the single-chip DLP and thus further reducing the optical engine volume. Under the precondition of the lowest possible cost, incoherent lights with a large luminous flux per unit area can be provided; therefore, the provided projection optical engine can almost be applied to all projection display occasions, especially to occasions of micro projection or portable projection and other occasions with high requirements of noises.
Description
Technical field
The present invention relates to a kind of is the novel projecting optical engine of projection source with laser and LED hybrid light source.Background technology
Projector appeared on the market existing 30 years, and along with the development that science and technology is maked rapid progress, the powerful video impulsive force of projector just progressively changes people's consumption mode.Projecting optical engine is one of most important parts of projector, and its brightness, light utilization efficiency and thermal value directly influence the quality of projected image, volume, power consumption and the maintenance cost of projector.
Tradition projector adopts metal halogen bulb or ultra high pressure mercury bulb as basic light source product always.The advantage of metal halogen bulb is a low price, and shortcoming is that the half life period is short, and heating is high; Heat radiation system of projector is required high; Should not use for a long time, normally use brightness about 1000 hours will decay to about original half, so it mainly is used on some low-end products.Mercury lamp has makes easy, features simple structure, the easy characteristics of control, also is the light source of projector of present main flow.But mercury lamp is difficult to reach high-performance, high chromaticity, high brightness and long-life, overlength job stability.Metal halid lamp, ultrahigh pressure mercury lamp etc. are as the light source of illumination, and the power consumption high life is short, light conversion efficiency is low, thermal value is big and environment is polluted.
In recent years, along with the maturation of diode technologies, people attempt adopting LED (Light Emitting Diode; Light emitting diode) as the light source of projection display system; Compare with traditional light source, LED has bigger gamut range, and the LED live width is narrower; Have high color saturation, can show that nature is true, gay colours.LED has advantages such as volume is little, the life-span is long, cost is low, good reliability simultaneously, is a kind of environmental protection light source that does not have mercury.LED has been become the significant development direction in demonstration field as light source.Along with the development of led light source technology, progressively the popularizing of minitype projection machine, projector enters into mediocrity house just stealthily.
But the luminous flux of the unit area of LED is near the limit, because the bottleneck in the LED encapsulation, led light source is still more limited to the raising of brightness, does not also reach the requirement that projection display system is used, the occasion that more particularly needs highlight illumination to use.Prior art is to improve luminous flux and brightness by the array area that increases LED; But because LED is lambert's body illuminating source; Its emitted light beams angle of divergence is generally 180 °; If the optical extend of the led array after the combination has exceeded the optical extend of projection display system, this part light that exceeds then can not effectively be coupled into projection display system, and this also is that restriction is the biggest factor of the projection arrangement large-scale application of light source with LED.
Laser have high brightness, monochromaticity good, disperse advantages such as solid angle is little, be that led light source is incomparable.But in optical projection system, exist several hang-ups to hinder the application of pure LASER Light Source product with the illumination of redgreenblue LASER Light Source.The image speckle big like the laser generates heat amount, that many lasing light emitters coherence causes, and cost is high.Laser manufacturer still can't provide cost suitable blue laser in the required power bracket of digital projection so far.In fact, on the power demand level, the cost that obtains blue laser possibly be about 10 times of cost that obtain green laser.To a certain extent, in some power bracket, red laser also exists cost and availability issue, when in particular for large screen projection illumination being provided.The cost problem makes laser projection can not become the well accepted substitute technology of projection display system in a short time.And that the price red, blue-ray LED of equal luminous power is merely is red, blue light solid state laser device or red, blue light LD (Laser Diode; Semiconductor laser) 1/10th to 1/tens; Compare then more cheaply with gas laser, the cost of green LED is with 1/5th of constant power green solid laser instrument cost.In general, on cost, LED is with the obvious advantage.Because the coherence of laser causes picture so-called speckle to occur, have a strong impact on image quality in addition, use LED then not have the puzzlement of this respect as light source.And also suitable good of the image quality that obtains as light source with LED can be approved by popular.Therefore be a kind of projection solution cheaply with LED as the projection display system of light source, be particularly useful for the digital projection display system of the small screen.
People begin to consider to utilize LASER Light Source instead of part led light source, and some areas are risen to other led light sources, improve white general power substantially; And the optical extend of laser instrument very little in general (littler than LED at least) with constant power; Power can be accomplished very big, and brightness can be very high, and high-efficiency environment friendly; So factor such as integrated cost and effect, laser are a kind of desirable additional light sources to led light source.Therefore laser and LED hybrid light source succeeds in developing the variation and the development space that will promote projection market energetically.Summary of the invention
The technical matters that the present invention will solve is to make full use of laser and LED advantage separately; Construct a kind of brightness is high, volume is little, low in energy consumption, radiationless engineering practicability laser and LED hybrid light source; Improve the luminous flux of projector, dwindle the complete machine size, reduce cost of products.
The present invention is in order to solve the problems of the technologies described above, and the solution that adopts is: the projecting optical engine of said a kind of laser and LED hybrid light source is made up of parts such as hybrid light source module, optical beam path part, driver module, ultra wide viewing angle camera lens, heat radiation module and manual focusing wheels.Wherein hybrid light source die set light source part is made up of red LED array, green laser, blue laser diode array+blue LED arrays; Optical beam path partly comprises reflector plate and concavees lens; Driver module is DMD driver module or LCOS display module (two kinds of projection patterns are similar).
Under colour temperature 6500K and 9300K commonly used; The area that green light LED need take all is maximum in the three primary colours; And surpassed the half the of the total area; If give red, blue dichromatism LED, then can make white general power promote about 1 times, in addition because the green glow of same power is lower than the solid state laser of other colors with the cost of body laser with the area distributions of green light LED; Than also low with the green light LED cost of constant power, therefore using green laser to replenish red, blue dichromatism LED is a kind of good scheme that improves white general power, reduces cost.According to present industrial manufacture level; Red, green, blue LED conversion efficiency reaches 30% respectively; 10% and 25%; Owing to light engine inner structure limitation of design, the projected path of blue-light source true qualities long, laser in addition are green in addition, and this moment, blue-light source just needed the hybrid light source of dependence laser and LED to support.
Red LED array, green laser, blue laser diode array and the blue LED arrays reflector plate of respectively hanging oneself reflexes on the concavees lens; The RGB three light-beam source pools through concavees lens and projects once more on DMD driver module or the LCOS display module after a branch of redgreenblue light projects on the reflector plate, and the image that obtains is through being projected on white wall or the curtain behind the wide-angle lens.Overall processes such as redgreenblue hybrid light source completion so far is luminous, reflection, optically focused, projection.
The projection principle of DMD driver module and LCOS display module is approaching basically; The both accomplishes the image projecting process through luminous, light reflection, optically focused or processes such as optical filtering, projection; Therefore on the DLP and two kinds of light engines of LCOS that a kind of laser that the present invention relates to and LED hybrid light source can be suitable for present main flow, has wide application space.
By redgreenblue luminous intensity general proportions 3: 6: 1 for being that the light engine light source of 2500 lumens is assigned as according to, hybrid light source luminous flux: the green laser of the red LED of power 10W, power 8W, comprehensive power are blue laser and the blue led of 10W.By the laser of above consideration design and the projecting optical engine design size of LED hybrid light source be: 106mm*85mm*25.5mm display technique: 0.65 inch DLP
chip or 0.45 inch LCOS display chip resolution: 1280*800; (DLP) or 1024*600; (LCOS) the design luminous flux is: 2500 lumens; (DLP) or 2000 lumens; (LCOS) contrast: 1500: 1; (DLP) or 400: 1; (LCOS) light source life: 25000 hours maximum design power: 106W
As improvement, said a kind of laser is provided with parts such as red LED array, green laser, blue laser diode array+blue LED arrays, reflector plate, concavees lens, DMD driver module or LCOS display module (two kinds of projection patterns are similar), ultra wide viewing angle camera lens, heat radiation module and manual focusing wheel with the projecting optical engine of LED hybrid light source.
As improvement, said a kind of laser and LED hybrid light source are made up of red LED array, green laser, blue laser diode array+blue LED arrays, and its luminescence efficiency is high, power consumption is little, the life-span is long, thermal value is low.Since with the cost of the green laser of constant power far below red, blue dichromatism laser; A little more than cost with the constant power green LED; And the cost of red, blue-ray LED is also especially well below the cost of respective color laser, so utilize green laser and integrated light source scheme cost red, blue-ray LED very low.
As improvement, the projecting optical engine of said a kind of laser and LED hybrid light source with when LED light mixes, has also carried out the eliminating coherence processing to laser at guided laser, has saved independent eliminating coherence device; Simultaneously on one chip DLP technical foundation, set up the redgreenblue light source, save the indispensable colour wheel of one chip DLP, a nearly step has been dwindled the light engine volume, and has reduced cost.
The beneficial effect that the present invention is compared with prior art brought is:
The projecting optical engine of a kind of laser and LED hybrid light source has been abandoned traditional ultrahigh pressure mercury lamp as light source, changes laser and LED into as projection source, low-carbon (LC), environmental protection more.
The projecting optical engine of a kind of laser and LED hybrid light source is as far as possible cheaply under the prerequisite; The incoherent light of bigger luminous flux in the unit area is provided; Almost be applicable to all Projection Display occasions, be particularly useful for micro projection or portable projection and other occasions higher noise requirements.
The projecting optical engine design of a kind of laser and LED hybrid light source can reach the SD resolution of 1280*800, the light source life more than 25000 hours.And size can contract to 102mm*76mm*25.5mm, can really realize the palm projection.Description of drawings
Fig. 1 is a principle of the invention frame diagram
Fig. 2 is blue laser of the present invention and blue led cut-open view
Fig. 3 is the present invention's embedded fan cut-open view of module embodiment of dispelling the heat
Under colour temperature 6500K and 9300K commonly used; The area that green light LED need take all is maximum in the three primary colours; And surpassed the half the of the total area; If give red, blue dichromatism LED, then can make white general power promote about 1 times, in addition because the cost of the green glow solid state laser of same power is lower than the solid state laser of other colors with the area distributions of green light LED; Than also low with the green light LED cost of constant power, therefore using green laser to replenish red, blue dichromatism LED is a kind of good scheme that improves white general power, reduces cost.According to present industrial manufacture level; Red, green, blue LED conversion efficiency reaches 30% respectively; 10% and 25%; Owing to light engine inner structure limitation of design, the projected path of blue-light source true qualities long, laser in addition are green in addition, and this moment, blue-light source just needed the hybrid light source of dependence laser and LED to support.
Below in conjunction with Figure of description the present invention is described further.
The projecting optical engine of a kind of laser and LED hybrid light source by the hybrid light source module 1. 2. 3., optical beam path part 4. 5. 6. 7. 8. 9. 10., driver module (11), ultra wide viewing angle camera lens (12), heat radiation module (13) (14), manual focusing take turns parts such as (15) and form.
The projecting optical engine of a kind of laser as shown in Figure 1, LED hybrid light source be provided with the red LED array 1., green laser 2., blue laser diode array+blue LED arrays 3., reflector plate 4. 5. 6. 7. 8. 10., concavees lens 9., DMD driver module or LCOS display module (11), ultra wide viewing angle camera lens (12), heat radiation module (13) (14) take turns parts such as (15) with manual focusing.The Lights section by the red LED array 1., green laser 2., 3. blue laser diode array+blue LED arrays form; Because the red, green and blue LED conversion efficiency reaches 30% respectively; 10% and 25%; Consider light engine inner structure limitation of design in addition, the projected path of blue-light source true qualities long, laser in addition are green, and this moment, blue-light source just needed to rely on the hybrid light source of laser and LED to support.By redgreenblue luminous intensity general proportions 3: 6: 1 for being that the light engine light source of 2500 lumens is assigned as according to, hybrid light source luminous flux: the red LED array of power 10W 1., the green laser of power 8W 2., comprehensive power be 10W blue laser diode array and blue LED arrays 3..
The green laser of said exiting surface 2. exit direction is 1. identical with said blue light laser diode array+led array luminous major axes orientation 3. with said red-light LED array.The red LED array 1., green laser 2., 10. 8. 7. 6. 5. 4. blue laser diode array and the blue LED arrays reflector plate of 3. respectively hanging oneself reflex to concavees lens and 9. go up; 9. 3. 2. 1. the RGB three light-beam source pool a branch of redgreenblue light through concavees lens and 1. 2. 3. project and project once more on DMD driver module or the LCOS display module (11) after 10. reflector plate is gone up, and the image that obtains is then projected on white wall or the curtain through wide-angle lens (12).So far 3. 2. 1. the redgreenblue hybrid light source accomplish overall processes such as luminous, reflection, optically focused, projection.
The projection principle of DMD driver module and LCOS display module (11) is approaching basically; The both accomplishes the image projecting process through luminous, light reflection, optically focused or processes such as optical filtering, projection; Therefore a kind of laser and LED hybrid light source can be suitable for having wide application space on present main flow DLP and two kinds of light engines of LCOS.
By redgreenblue luminous intensity general proportions 3: 6: 1 for being that the light engine light source of 2500 lumens is assigned as according to, hybrid light source luminous flux: the green laser of the red LED of power 10W, power 8W, comprehensive power are blue laser and the blue led of 10W.Projecting optical engine technical parameter by the laser of above consideration design and LED hybrid light source is following: design size is: the 106mm*85mm*25.5mm display technique: 0.65 inch DLP
chip or 0.45 inch LCOS display chip resolution: 1280*800; (DLP) or 1024*600; (LCOS) the design luminous flux is: 2500 lumens; (DLP) or 2000 lumens; (LCOS) contrast: 1500: 1; (DLP) or 400: 1; (LCOS) light source life: 25000 hours design power: 106W
1. blue laser as shown in Figure 2 and blue LED arrays hybrid light source do the light source module casing by aluminium alloy, blue laser diode 2. 3. by 2 groups totally 12 diode laser matrixs form, 4. blue LED arrays has 4 high-power blue led chips.
As shown in Figure 3; Heat radiation module (13) is processed by the good louvered red copper of heat-conducting effect, in to have inlayed a volume size be 2515, power is the high-power radiator fan (14) of 5V1.2W; Embedded fan also can reduce the volume of optical projection engine except dispelling the heat expeditiously.
The projecting optical engine of a kind of laser according to the invention and LED hybrid light source is not limited to above technical application parameter.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 (6)
1. the projecting optical engine of laser and LED hybrid light source is made up of parts such as hybrid light source module, optical beam path part, driver module, ultra wide viewing angle camera lens, heat radiation module and manual focusing wheels.Wherein hybrid light source die set light source part is made up of red LED array, green laser, blue laser diode array+blue LED arrays; Optical beam path partly comprises reflector plate and concavees lens; Driver module is DMD driver module or LCOS display module (two kinds of projection patterns are similar).
2. said projecting optical engine is characterised in that: red LED array, green laser, blue laser diode array and the blue LED arrays reflector plate of respectively hanging oneself reflexes on the concavees lens; The RGB three light-beam source pools through concavees lens and projects once more on DMD driver module or the LCOS display module after a branch of redgreenblue light projects on the reflector plate, and the image that obtains is through being projected on white wall or the curtain behind the wide-angle lens.Overall processes such as redgreenblue hybrid light source completion so far is luminous, reflection, optically focused, projection.
3. according to the said a kind of projecting optical engine of claim 2; It is characterized in that: a kind of laser and LED hybrid light source are made up of red LED array, green laser, blue laser diode array+blue LED arrays, and luminescence efficiency is high, power consumption is little, the life-span is long, thermal value is low.Because light engine inner structure limitation of design, the projected path of blue-light source true qualities long, laser in addition are green, this moment, blue-light source just needed to rely on the hybrid light source of laser and LED to support.Since with the cost of the green laser of constant power far below red, blue dichromatism laser; A little more than cost with the constant power green LED; And the cost of red, blue-ray LED is also especially well below the cost of respective color laser, so utilize the integrated light source scheme cost of green laser and red led array, blue laser+led array very low.
4. according to the said a kind of projecting optical engine of claim 2, it is characterized in that: with when LED light mixes, also laser has been carried out the eliminating coherence processing at guided laser, saved independent eliminating coherence device; Simultaneously on one chip DLP technical foundation, set up the redgreenblue light source, save the essential colour wheel of one chip DLP, a nearly step has been dwindled the light engine volume, and has reduced cost.
5. according to the said a kind of projecting optical engine of claim 2; It is characterized in that: the projection principle of DMD driver module and LCOS display module is approaching basically; The both accomplishes the image projecting process through luminous, light reflection, optically focused or processes such as optical filtering, projection; Therefore DLP and two kinds of optical projection of LCOS that a kind of laser that the present invention relates to and LED hybrid light source can be suitable for present main flow are technical, have wide application space.
6. according to the said a kind of projecting optical engine of claim 2; It is characterized in that: under prerequisite as far as possible cheaply; The incoherent light of bigger luminous flux in the unit area is provided; Almost be applicable to all Projection Display occasions, be particularly useful for micro projection or portable projection and other occasions higher noise requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100927339A CN102736382A (en) | 2011-04-12 | 2011-04-12 | Projection optical engine with laser-LED hybrid light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100927339A CN102736382A (en) | 2011-04-12 | 2011-04-12 | Projection optical engine with laser-LED hybrid light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102736382A true CN102736382A (en) | 2012-10-17 |
Family
ID=46992118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100927339A Pending CN102736382A (en) | 2011-04-12 | 2011-04-12 | Projection optical engine with laser-LED hybrid light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102736382A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529631A (en) * | 2013-10-25 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Double-color laser projection light source |
| CN105116679A (en) * | 2015-10-08 | 2015-12-02 | 杭州虹视科技有限公司 | Laser illuminator, laser projection system and laser display system |
| CN105446065A (en) * | 2015-12-31 | 2016-03-30 | 中国华录集团有限公司 | Laser projection system |
| CN110244505A (en) * | 2019-07-01 | 2019-09-17 | 吕素萍 | A kind of solution speckle mixed light source |
| CN110824821A (en) * | 2019-11-21 | 2020-02-21 | 四川长虹电器股份有限公司 | Hybrid light source coupling system based on laser light source and LED light source |
| 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 |
-
2011
- 2011-04-12 CN CN2011100927339A patent/CN102736382A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529631A (en) * | 2013-10-25 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Double-color laser projection light source |
| CN105116679A (en) * | 2015-10-08 | 2015-12-02 | 杭州虹视科技有限公司 | Laser illuminator, laser projection system and laser display system |
| CN105446065A (en) * | 2015-12-31 | 2016-03-30 | 中国华录集团有限公司 | Laser projection system |
| CN105446065B (en) * | 2015-12-31 | 2017-06-16 | 中国华录集团有限公司 | A kind of laser projection system |
| CN110244505A (en) * | 2019-07-01 | 2019-09-17 | 吕素萍 | A kind of solution speckle mixed light source |
| CN110824821A (en) * | 2019-11-21 | 2020-02-21 | 四川长虹电器股份有限公司 | Hybrid light source coupling system based on laser light source and LED light source |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI437350B (en) | Illumination system and wavelength-transforming device thereof | |
| US20130088689A1 (en) | Light source module and projection apparatus | |
| CA2636786C (en) | Light-source lamp and projector | |
| CN102736382A (en) | Projection optical engine with laser-LED hybrid light source | |
| KR101694191B1 (en) | A recycling system and method for increasing brightness using light pipes with one or more light sources, and a projector incorporating the same | |
| TWI439793B (en) | Porjector light source apparatus | |
| JP2013029831A (en) | Illumination apparatus and projection type image display apparatus | |
| EP2887141B1 (en) | Projector having light source including laser diodes | |
| CN204515333U (en) | For the Novel light source of Projection Display | |
| CN102650812A (en) | Light source component, light source system and projection device | |
| US9678417B2 (en) | Light source unit including laser diodes as light sources and microlens array and projector | |
| TW201310156A (en) | Projector light source apparatus | |
| TW201307986A (en) | Porjector light source apparatus | |
| TW201317701A (en) | Optical mechanical of projector | |
| JP6425058B2 (en) | Light source device and projection device | |
| JP5979199B2 (en) | Light emitting device, light source device, and projector using the light source device | |
| CN102955340A (en) | Light source device of projector | |
| CN202257010U (en) | Projective optical engine with light source mixing laser and LED (Light Emitting Diode) | |
| JP4939063B2 (en) | Light source lamp and projector | |
| CN209373338U (en) | Lighting system and projection arrangement | |
| JP2008090016A (en) | Lighting system and projection image display device | |
| CN102081290A (en) | Liquid crystal display (LCD) projection optic illumination engine of light-emitting diode (LED) light source | |
| CN112255863B (en) | Light path structure of laser movie and television photography lighting lamp | |
| CN101424780A (en) | Combination lens and lamp using the same | |
| JP2007193989A (en) | Lamp for light source and projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |