CN201600541U - Miniature projector light source device and miniature projector - Google Patents
Miniature projector light source device and miniature projector Download PDFInfo
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- CN201600541U CN201600541U CN2009202692410U CN200920269241U CN201600541U CN 201600541 U CN201600541 U CN 201600541U CN 2009202692410 U CN2009202692410 U CN 2009202692410U CN 200920269241 U CN200920269241 U CN 200920269241U CN 201600541 U CN201600541 U CN 201600541U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a miniature projector light source device and a miniature projector utilizing the same. The miniature projector light source device comprises an organic light emitting diode OLED light source and a converging and collimating unit, wherein the converging and collimating unit is arranged beside an emergent light path of the OLED light source. The OLED light source is used as the light source of the miniature projector, and then power consumption of the miniature projector is lower, thereby being capable of saving energy sources effectively.
Description
Technical field
The utility model relates to the projection display apparatus technical field, more particularly, relates to a kind of micro-projector light supply apparatus and micro-projector.
Background technology
Along with the continuous development of electronic product industry, functional diversities, volume microminiaturization have become the development trend of each electronic product at present.
Projector can provide many people to share the display device of watching as a kind of, has been widely used in every field such as commercial affairs, teaching.But the common volume of existing projector is big, power consumption is higher, therefore, under some occasion its application has been produced restriction.Along with the proposition of mobile projector notion, engendered the pouch-type projector that can be convenient for carrying, the application of having expanded projector greatly.
In addition, along with the development of mobile phone technique, emerge various smart mobile phones.Multiple functions such as smart mobile phone can integrated camera, media play, its function is equivalent to an electric energy, can carry out browsing of electronic document, photograph, also can carry out watching of video.This makes people require electronic document, photograph and the video of mobile phone EMS memory storage to require the mobile phone miniaturization on the other hand again, to be convenient for carrying by large screen display on the one hand.Under such application demand drove, the minitype projection module in the mobile phone had appearred being integrated in subsequently.Minitype projection module can be with electronic document, photograph and the video-projection of mobile phone EMS memory storage on metope, screen, realizes the interchange of information and shares.
By discovering, the light source ingredient in present little projection products mainly contains two kinds, or with LED (Lighting Emitting Diode, light emitting diode) light source, or use laser.Yet led light source belongs to pointolite, and the luminescence chip area is little, the junction temperature height, and the colour rendering temperature influence of light source is big, and therefore the cooling system complexity, adopts the micro-projector of led light source to exist problems such as power consumption height, radiating treatment difficulty, LED cost height; And laser also exists some shortcomings such as cost height, industrialization difficulty; These reasons are all limiting the application and the development of little shadow casting technique.
The utility model content
In view of this, the utility model provides a kind of micro-projector light supply apparatus and micro-projector, to reduce the power consumption of micro-projector.
The utility model embodiment is achieved in that
A kind of micro-projector light supply apparatus comprises: Organic Light Emitting Diode oled light source and converge the collimation unit, the described collimation unit that converges is arranged at described oled light source emergent light light path side.
Preferably, described oled light source is plane oled light source or curved face type oled light source.
Preferably, described oled light source is white light OLED light source or three primary colours oled light source.
Preferably, the described collimation unit that converges comprises: microlens array and condenser lens.
A kind of micro-projector comprises: micro-projector light supply apparatus, light engine and image-generating unit;
Wherein, described micro-projector light supply apparatus comprises: Organic Light Emitting Diode oled light source and converge the collimation unit, and the described collimation unit that converges is arranged at described oled light source emergent light light path side;
Described light engine is arranged between described micro-projector light supply apparatus and the image-generating unit.
Preferably, described oled light source is plane oled light source or curved face type oled light source.
Preferably, described oled light source is white light OLED light source or three primary colours oled light source.
Preferably, the described collimation unit that converges comprises: along the microlens array and the condenser lens of emergent light light path setting.
Preferably, described light engine comprises: photomodulator unit or liquid crystal light valve unit.
Preferably, described photomodulator unit comprises: liquid crystal on silicon or Digital Micromirror Device.
Compare with prior art, the technical scheme that the utility model provides has the following advantages and characteristics:
The utility model adopts the light source of OLED as micro-projector, because OLED need not backlight, the luminescence efficiency height, luminous good uniformity, cooling system is simple, and have fast, in light weight, the thin thickness of reaction, simple structure, cost is low and advantage such as flexible, and can make planar light source, therefore, make that employing OLED is lower as the micro-projector power consumption of light source, effectively energy savings;
And, adopt powerful OLED to replace LED, and cooperate different light path systems as the micro-projector light source, make that the light intensity uniformity of micro-projector light source is good, the divergence of beam angle is little, light emission rate height, stable performance;
In addition, adopt three primary colours OLED, divide to reach by rgb space and simply close the coloured light road, can realize colour as the micro-projector light source.
Description of drawings
Fig. 1 is the structural representation of a kind of micro-projector light supply apparatus of the utility model;
Fig. 2 is the synoptic diagram of a kind of micro-projector light supply apparatus that is made of plane oled light source of the utility model;
Fig. 3 is the synoptic diagram of a kind of micro-projector light supply apparatus that is made of curved face type oled light source of the utility model;
Fig. 4 be the utility model a kind of adopt microlens array close coloured light road synoptic diagram;
Fig. 5 be the utility model a kind of adopt the integration optical wand close coloured light road synoptic diagram;
Fig. 6 is the structural representation of a kind of micro-projector of the utility model;
Fig. 7 is the light path synoptic diagram of a kind of LCoS of selecting for use of the utility model as the micro-projector of photomodulator unit;
Fig. 8 is that the utility model another kind is selected the light path synoptic diagram of LCoS as the micro-projector of photomodulator unit for use;
Fig. 9 is the light path synoptic diagram of a kind of LCD of selecting for use light valve unit of the utility model as the micro-projector of light engine;
Figure 10 is the light path synoptic diagram of a kind of DMD of selecting for use of the utility model as the micro-projector of photomodulator unit.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.
With reference to Fig. 1, show a kind of micro-projector light supply apparatus in the utility model, comprise: OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) light source 10 collimates unit 20 with converging, and the described collimation unit 20 that converges is arranged at described oled light source 10 emergent light light path sides.
OLED is as a kind of new type light source, owing to need not backlight, the luminescence efficiency height, luminous good uniformity, cooling system is simple, and have fast, in light weight, the thin thickness of reaction, simple structure, cost is low and advantage such as flexible, and can make planar light source, therefore, can replace led light source general in the prior art, make that employing OLED is lower as the micro-projector power consumption of light source, effectively energy savings.
Wherein, be arranged at converging the collimation unit and can comprising of described Organic Light Emitting Diode emergent light light path side: the microlens array and the condenser lens that are provided with along light path.The emergent light in oled light source carries out optically focused through microlens array to be handled, and then, the emergent light of handling through optically focused is through condenser lens processings that collimate, formation parallel light emergence.Handle through optically focused, collimation, make the emergent light good uniformity, and the emergent light angle of divergence is little.It will be appreciated by persons skilled in the art that and realize that the condenser lens that collimation is handled can be a single element lens, also can be lens combination, and the utility model is not done concrete qualification to this.
Described oled light source can be plane oled light source or curved face type oled light source, and the utility model is not done concrete restriction to this.Those skilled in the art can according to the size of micro display chip and the requirement of light path system volume, determine the suitable planar light source or the light-emitting area of curved surface light source according to different light path systems, to improve the directivity of light.Simultaneously, can be at luminescent layer bottom plating one deck highly reflecting films in oled light source, to improve the utilization factor of light.
With reference to figure 2, show in the utility model respectively the synoptic diagram of the micro-projector light supply apparatus that constitutes by plane oled light source.As shown in the figure, the micro-projector light supply apparatus comprises: plane oled light source 20, the microlens array 21 and the condenser lens 22 that set gradually along plane oled light source 20 emergent light light paths, the light that send in oled light source 20 converges through microlens array 21, condenser lens 22 collimation back outgoing, thus directional light formed, because the good uniformity of plane oled light source 20 output intensities, after optically focused, collimation are handled, the emergent light good uniformity, the divergence of beam angle is little, is a kind of desirable projection light source.This plane oled light source makes simple, and stable performance is easy to use.
In another embodiment of the present utility model, the oled light source is a curved face type, as shown in Figure 3, the micro-projector light supply apparatus comprises: curved face type oled light source 30, the microlens array 31 and the condenser lens 32 that set gradually along curved face type oled light source 30 emergent light light paths, the effect in curved face type oled light source 30 is: the curved surface in curved face type oled light source 30 is on the one hand to increase the area of light-emitting area, light to emission converges on the other hand, reduces the emergence angle of emergent light, to improve the utilization factor of light.The output intensity of the projection light source that obtains in this way is evenly good, and the divergence of beam angle is little, the light emission rate height in oled light source.
For plane oled light source or curved face type oled light source, two kinds of light sources can be white light OLEDs, can be three primary colours OLED also, can be provided with according to the needs of all kinds of little projection light sources of reality during specific implementation.
Among the utility model embodiment only to realizing that by the oled light source colored technical scheme simply describes.According to S-SYSTEM (PAL-system and TSC-system) compound method, plane oled light source is marked off the three-color light-emitting zone, to reach color standard.Simultaneously, when dividing, light source to take into account the outgoing uniformity of light.
In the present embodiment, plane oled light source is divided by rgb space, and it is colored to utilize a principle of preface colour mixture to realize, and designs several projecting light paths structure that is fit to the oled light source.Projection light source adopts red, green, blue three look OLED, field preface colour mixture is by switching this three look OLED in turn at a high speed, when three kinds of primary lights occur with enough fast speed, for example: when the switching frequency of three look OLED is set to 180Hz, utilize the visual persistence of human eye, synthetic colored, this method and have now and utilize led light source to carry out time-division colour mixture principle to be consistent, no longer to give unnecessary details at this.
Adopt projecting light path's structure in oled light source to adopt the difference of projecting light path's structure maximum of led light source to be to close coloured light road part with existing.In the prior art, generally independently RGB led light source or part independently led light source need close look by dichroic mirror because the RGB led light source spatially separates, it is bigger therefore to take up room; And the RGB led light source that is packaged together aspect even light light path design because the light path complexity, optics processing and fabricating difficulty.It is simple that the coloured light road is closed in little projection in employing oled light source, just can play by microlens array or integration optical wand and well close chromatic effect, and the ray machine volume of making of the oled light source is little, and brightness uniformity is good.With reference to Fig. 4 and Fig. 5, show respectively adopt microlens array or integration optical wand close the coloured light road.Because the red, green, blue three look OLED light-emitting area of all kinds that adopts is spatially separated usually, because the emergent light angle of divergence in oled light source 40 is very big, in order to improve light utilization efficiency the cover 41 that inwall has high reflectance is enclosed within on the light-emitting area, thereby light is directed to microlens array 42 or integration optical wand 44, microlens array 42 and integration optical wand 44 can play the effect of even light, thereby light is shone on the collector lens 43 equably.
Need to prove, in the foregoing description, the device of forming the micro-projector light supply apparatus is not limited in this, can also be according to actual needs, in the light path of oled light source emergent light, increase catoptron is set, change the light direction of emergent light, this partial content belongs to technology well known to those skilled in the art, no longer gives unnecessary details at this.
Corresponding above-mentioned micro-projector light supply apparatus, the utility model also provides a kind of micro-projector.As shown in Figure 6, this micro-projector comprises: micro-projector light supply apparatus 60, light engine 61 and image-generating unit 62; Wherein, described micro-projector light supply apparatus 60 comprises: Organic Light Emitting Diode oled light source 601 collimates unit 602 with converging, and the described collimation unit 602 that converges is arranged at described oled light source 601 emergent light light path sides; Described light engine 61 is arranged between described micro-projector light supply apparatus 60 and the image-generating unit 62.
OLED is as a kind of new type light source, owing to need not backlight, the luminescence efficiency height, luminous good uniformity, cooling system is simple, and have fast, in light weight, the thin thickness of reaction, simple structure, cost is low and advantage such as flexible, and can make planar light source, therefore, can replace led light source general in the prior art, make that employing OLED is lower as the micro-projector power consumption of light source, effectively energy savings.
Wherein, be arranged at converging the collimation unit and can comprising of described Organic Light Emitting Diode emergent light light path side: the microlens array and the condenser lens that are provided with along light path.The emergent light in oled light source carries out optically focused through microlens array to be handled, and then, the emergent light of handling through optically focused is through condenser lens processings that collimate, formation parallel light emergence.Handle through optically focused, collimation, make the emergent light good uniformity, and the emergent light angle of divergence is little.It will be appreciated by persons skilled in the art that and realize that the condenser lens that collimation is handled can be a single element lens, also can be lens combination, and the utility model is not done concrete qualification to this.
Described oled light source can be plane oled light source or curved face type oled light source, and the utility model is not done concrete restriction to this.Those skilled in the art can according to the size of micro display chip and the requirement of light path system volume, determine the suitable planar light source or the light-emitting area of curved surface light source according to different light path systems, to improve the directivity of light.Simultaneously, can be at luminescent layer bottom plating one deck highly reflecting films in oled light source, to improve the utilization factor of light.For plane oled light source or curved face type oled light source, two kinds of light sources can be white light OLEDs, also can be three primary colours OLED.
In addition, light engine among the utility model embodiment can comprise: photomodulator unit or LCD (Liquid Crystal Display, liquid crystal) light valve unit, wherein, the photomodulator unit can comprise: LCoS (Liquid Crystal on Silicon, liquid crystal on silicon) or DMD (Digital Micro mirrorDevice, Digital Micromirror Device).
Figure 7 shows that when selecting the light path synoptic diagram of LCoS for use as the micro-projector of photomodulator unit.As shown in the figure, this micro-projector comprises oled light source 70,70 emergent light light paths are provided with along the oled light source microlens array 71 and condenser lens 72, the emergent light in oled light source 70 is through converging, shine PBS (Polarizing Beam Splitter behind the collimation, polarizing beam splitter) module 73, PBS module 73 is converted to certain polarized light (P polarized light or S polarized light) with natural light, LCoS74 receives a certain polarized light (P polarized light or S polarized light) by 73 reflections of PBS module, what LCoS74 for example shown in Figure 7 received is the S polarized light that is reflected by PBS module 73, the S polarizing light irradiation is to LCoS74, through optical modulation, be converted to P polarized light transmission PBS module 73, carry out projection through projecting lens 75, the S polarized light of partial reflection returns along input path, because can be at luminescent layer bottom plating one deck highly reflecting films in oled light source 70, the light that returns can be used again through oled light source 70 bottom reflection, thereby improves light utilization efficiency.
Figure 8 shows that and select the light path synoptic diagram of LCoS for use as the another kind of micro-projector of photomodulator unit.Among this embodiment, the emergent light in oled light source 70 shines PBS module 73 after microlens array 71 and condenser lens 72 converge, collimate, after 73 transmissions of PBS module, shine on the LCoS74, through LCoS74 optical modulation back reflection, the polarized light part of reflection is returned along input path, and part is carried out projection through 73 reflections of PBS module, process projecting lens 75.
When selecting the LCD light valve unit for use as light engine, present embodiment shows a kind of light path synoptic diagram of micro-projector, as shown in Figure 9, and the emergent light in oled light source 70 irradiation LCD light valve unit 76, outgoing after the LCD spatial light modulation is carried out projection imaging through projecting lens 75.So-called spatial light modulation, be meant that LCD light valve unit 76 is under the driving of pixel voltage, control this pixel printing opacity and light tight, after LCD light valve unit 76 spatial light modulation, just can project image, this part principle and LCD display are similar, therefore, no longer give unnecessary details, this micro-projector is simple in structure, compact.
As shown in figure 10, show a kind of light path synoptic diagram of micro-projector again, among this embodiment, the photomodulator unit is selected DMD77 for use, the emergent light in oled light source 70 incides among the TIR (Total Internal Reflection, inner full-reflection prism) 77, on DMD78 after microlens array 71 and condenser lens 72 converge, collimate, DMD78 is according to the situation reflected light of pixel drive signal, and reflected light shines through projecting lens 75 from TIR77 and carries out projection imaging.
As seen, adopt powerful OLED to replace LED as the micro-projector light source, by cooperating different light path systems, various micro-projectors can be provided,, need not backlight because the OLED display technique is different with traditional LCD display mode, adopt extremely thin coating of organic material and glass substrate, when electric current passed through, these organic materials will be luminous, makes to adopt OLED can significantly save electric energy as the micro-projector of light source.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a micro-projector light supply apparatus is characterized in that, comprising: Organic Light Emitting Diode oled light source and converge the collimation unit, the described collimation unit that converges is arranged at described oled light source emergent light light path side.
2. micro-projector light supply apparatus according to claim 1 is characterized in that, described oled light source is plane oled light source or curved face type oled light source.
3. micro-projector light supply apparatus according to claim 1 is characterized in that, described oled light source is white light OLED light source or three primary colours oled light source.
4. according to each described little projection light source device among the claim 1-3, it is characterized in that the described collimation unit that converges comprises: microlens array and condenser lens.
5. a micro-projector is characterized in that, comprising: micro-projector light supply apparatus, light engine and image-generating unit;
Wherein, described micro-projector light supply apparatus comprises: Organic Light Emitting Diode oled light source and converge the collimation unit, and the described collimation unit that converges is arranged at described oled light source emergent light light path side;
Described light engine is arranged between described micro-projector light supply apparatus and the image-generating unit.
6. micro-projector according to claim 5 is characterized in that, described oled light source is plane oled light source or curved face type oled light source.
7. micro-projector according to claim 5 is characterized in that, described oled light source is white light OLED light source or three primary colours oled light source.
8. micro-projector according to claim 5 is characterized in that, the described collimation unit that converges comprises: along the microlens array and the condenser lens of emergent light light path setting.
9. according to each described micro-projector among the claim 5-8, it is characterized in that described light engine comprises: photomodulator unit or liquid crystal light valve unit.
10. micro-projector according to claim 9 is characterized in that, described photomodulator unit comprises: liquid crystal on silicon or Digital Micromirror Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202692410U CN201600541U (en) | 2009-11-13 | 2009-11-13 | Miniature projector light source device and miniature projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202692410U CN201600541U (en) | 2009-11-13 | 2009-11-13 | Miniature projector light source device and miniature projector |
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| CN201600541U true CN201600541U (en) | 2010-10-06 |
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| CN2009202692410U Expired - Fee Related CN201600541U (en) | 2009-11-13 | 2009-11-13 | Miniature projector light source device and miniature projector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147532A (en) * | 2011-03-26 | 2011-08-10 | 电子科技大学 | Optical engine for projector |
| TWI426339B (en) * | 2011-06-03 | 2014-02-11 | ||
| CN104296611A (en) * | 2014-10-31 | 2015-01-21 | 合肥鑫晟光电科技有限公司 | Measuring scale |
| WO2015006889A1 (en) * | 2013-07-15 | 2015-01-22 | Lin Biguang | External oled illuminating lamp for photographic camera or video camera |
| CN112558388A (en) * | 2020-11-09 | 2021-03-26 | 深圳市菲森科技有限公司 | OLED-based projection system |
| CN116136640A (en) * | 2021-11-16 | 2023-05-19 | 华为技术有限公司 | Projection device, display apparatus and vehicle |
-
2009
- 2009-11-13 CN CN2009202692410U patent/CN201600541U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147532A (en) * | 2011-03-26 | 2011-08-10 | 电子科技大学 | Optical engine for projector |
| CN102147532B (en) * | 2011-03-26 | 2012-06-27 | 电子科技大学 | Optical engine for projector |
| TWI426339B (en) * | 2011-06-03 | 2014-02-11 | ||
| WO2015006889A1 (en) * | 2013-07-15 | 2015-01-22 | Lin Biguang | External oled illuminating lamp for photographic camera or video camera |
| CN104296611A (en) * | 2014-10-31 | 2015-01-21 | 合肥鑫晟光电科技有限公司 | Measuring scale |
| CN112558388A (en) * | 2020-11-09 | 2021-03-26 | 深圳市菲森科技有限公司 | OLED-based projection system |
| CN116136640A (en) * | 2021-11-16 | 2023-05-19 | 华为技术有限公司 | Projection device, display apparatus and vehicle |
| WO2023087739A1 (en) * | 2021-11-16 | 2023-05-25 | 华为技术有限公司 | Projection apparatus, display device, and vehicle |
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Granted publication date: 20101006 Termination date: 20171113 |