CN201885062U - High-power solid-state light source and mobile phone with same - Google Patents
High-power solid-state light source and mobile phone with same Download PDFInfo
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- CN201885062U CN201885062U CN2010205625336U CN201020562533U CN201885062U CN 201885062 U CN201885062 U CN 201885062U CN 2010205625336 U CN2010205625336 U CN 2010205625336U CN 201020562533 U CN201020562533 U CN 201020562533U CN 201885062 U CN201885062 U CN 201885062U
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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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a high-power solid-state light source comprising a solid-state luminescent device, a light-transmitting sheet carrying an optical wavelength conversion material, a light dodging device, and a reshaping device, wherein the light dodging device is used for dodging light from the solid-state luminescent device, the reshaping device is used for changing the light spot shape of the dodged light so as to project uniform light beams onto the light-transmitting sheet to form a light spot with a preset shape on the light-transmitting sheet. A diffractive optical element, an integral rod or a fly's-eye lens is used for realizing the light dodging device and the reshaping device. By adopting the light source provided by the utility model, the optical power density of exciting light is effectively decreased, and the improvement of the optical utilization efficiency of the light source in an application field is facilitated; and with respect to a mobile phone employing the light source, the service time of a battery of the mobile phone using a projection function can be prolonged.
Description
Technical field
The utility model relates to the light source that the band Sony ericsson mobile comm ab for example is applicable to photoemissive semiconductor devices, relates in particular to the structure that described light source is realized even light of hot spot or shape control.
Background technology
With Sony ericsson mobile comm ab, for example solid-state semiconductor luminescent device (especially LED) has obtained more and more widely use for the light fixture of light emitting source or light source of projector.Conform to the requirement of light source light power output size more and more highlyer, show one's talent because of its stronger practicality based on the high power solid state light source of light wavelength conversion.The high power light that this scheme will stem from LED projects the high power output light that excites generation to have predetermined dominant wavelength on the optical wavelength conversion material, often has structure as described below: the disk of material that comprises solid state light emitter and carrying optical wavelength conversion material, collimation lens is becoming nearly directional light from the optical alignment of solid state light emitter, and further certain that converges to optical wavelength conversion material by condenser lens a bit.
Above-mentioned prior art problems is, solid state light emitter often adopts great power LED, or even laser diode with high power density, converging to excitation light power on the described J point like this tends to too high and causes optical wavelength conversion material, rise such as but not limited to the fluorescent material temperature, thereby cause light conversion efficiency to descend.When especially solid state light emitter adopts laser diode, because the emission angle of laser is very little, it will be very inhomogeneous distributing at the light of the hot spot at place, described incident point, and central light strength is very strong and far above the edge light intensity, makes that the energy density of center is too high.
For this reason, prior art has proposed two kinds of solutions and has reduced the energy density in spot center district:
A kind of is to adopt the collimation lens out of focus, and/or the method for imaging surface out of focus: with the laser diode is example, collimation lens out of focus method is to make laser diode depart from the focal position of its pairing collimation lens, disperse so that slightly be by the BEAM SQUINT directional light behind the collimation lens, the projected spot that focuses on like this on the fluorescent material will become big; Imaging surface out of focus method adopts is that the disk of material at fluorescent material place is placed on a position of departing from condenser lens focus place, so that actual projected becomes greatly to the hot spot on the fluorescent material.These two kinds of out of focus modes all are the sizes of amplifying projected spot by out of focus, can use simultaneously or separately.Often the decline of the energy density of spot center is bigger after the out of focus, the slightly rising at edge, and hot spot slightly enlarges.
Another kind is to adopt the method that adds light-diffusing film: insert light-diffusing film in the light path behind condenser lens, or claim diffusion barrier (diffuser is usually used in its original directionality is broken up or lost to a light beams), so that the original light beam of assembling is broken up.Light-diffusing film parameter difference, the degree that light beam is broken up are also different.Select suitable light-diffusing film parameter, promptly can produce the hot spot expansion effect similar, thereby reduce the peak value of optical power density with aforementioned out of focus scheme.
The weak point of these two kinds of solutions is: because out of focus has caused the diffusion of hot spot, and the numerical aperture of gathering system is limited, therefore the light collection effective area light in addition that diffuses out gathering system is unavoidably lost, thereby the out of focus method will cause the decline of light collection efficiency.The out of focus distance is big more, and light collection efficiency is low more, and experiment can cause the light collection efficiency loss about 10% when finding out of focus 3mm.The scheme that adds light-diffusing film has and above-mentioned similar shortcoming, simultaneously because the attribute of scattering sheet is not controlled arbitrarily, and its optical characteristics can not arbitrarily customize, thereby can not control the power distribution of projected spot fully.In addition, existing light-diffusing film does not often reach 90 percent to the transmitance of light, adds the optical efficiency that part exciting light loss meeting that light-diffusing film causes reduces light source.
In addition, also there is a major issue in above-mentioned prior art, and promptly the light spot shape of whole light source emergent light is uncontrollable, is generally circle or ellipse.For some special occasions, be the projector applications field of rectangle (such as but not limited to length-width ratio 4: 3) such as the viewing area, the output facula of light source of projector preferably is the rectangle of same ratio; When in fact adopting the prior art light source, consider that described shape does not match (as shown in Figure 1, middle ellipse is represented the output facula of light source of projector, rectangle is represented the projection hot spot of projector), projector is for the consideration to the light utilization ratio, certainly will will make be connected to the described projection hot spot that is rectangle in the output facula of described light source of projector, so that when the input hot spot from light source is carried out shaping, minimum is forced down in light loss.Compare with the rectangular light spots that projector is actual required, the oval hot spot of existing light source has higher energy density undoubtedly.And energy density is high more, is unfavorable for that more optical wavelength conversion material improves light conversion efficiency.
Summary of the invention
The technical problems to be solved in the utility model is at above-mentioned the deficiencies in the prior art part, and a kind of high power solid state light source is proposed and with the mobile phone of this light source, the controlled light of output shape that has high uniformity and hot spot with generation is exported, and solves the too high light conversion efficiency decline that causes of excitation light power density and then the problem of whole light source decrease in efficiency simultaneously.
For solving the problems of the technologies described above, of the present utility modelly be contemplated that substantially: if will be controlled based on the light output facula shaped design of the solid state light emitter of light wavelength conversion, difference with the application scenario requires to decide, then under the prerequisite of same power output, both can improve the coupling efficiency of this solid state light emitter greatly in practical application, reduce optical power loss, can appropriateness reduce the energy density that this solid state light emitter is exported light again; To be designed to have high uniformity and light spot shape controlled be the key that solves the deficiency of existing issue with projecting exciting light on the optical wavelength conversion material in this solid state light emitter for this reason.
As the technical scheme that realizes the utility model design be, a kind of high power solid state light source is provided, comprise Sony ericsson mobile comm ab, carry the light transmission piece of optical wavelength conversion material; Especially, also comprise spare the dodging device that light is handled from the light of this Sony ericsson mobile comm ab, and the apparatus for shaping that is used for changing the light spot shape of the light of handling through even light, uniform beam is projected on the described light transmission piece to form a hot spot with reservation shape on this light transmission piece.
Specifically, in the such scheme, described Sony ericsson mobile comm ab comprises LED or laser diode.Described optical wavelength conversion material comprises fluorescent material, luminescent dye or nano luminescent material.Light spot shape from the light of each Sony ericsson mobile comm ab is oval or circular, and described reservation shape be circle, rectangle or square.
Further, in the such scheme, described dodging device and apparatus for shaping are combined into diffraction optical element, handle uniform beam and the past described light transmission piece of projection that has described reservation shape with generation to spare light and shaping from the light of described Sony ericsson mobile comm ab.Perhaps, it is right that described dodging device and apparatus for shaping are combined into the fly's-eye lens that is made of two fly's-eye lenses, every fly's-eye lens is periodicity emphasis multiple bank cloth by small lens unit and forms, and the lens unit between these two fly's-eye lenses is one to one or a pair of two and above corresponding relation; Also comprise a collector lens or set of lenses, from the light of described Sony ericsson mobile comm ab through described fly's-eye lens to after converge projection toward described light transmission piece through this collector lens or set of lenses again.Perhaps, described dodging device and apparatus for shaping are combined into integrating rod, the front end of this integrating rod collects to spare light and shaping processing from the light of described Sony ericsson mobile comm ab, and the bore of rear end is described reservation shape has this reservation shape with generation a uniform beam and the past described light transmission piece of projection.
In the such scheme, comprise that also collimation lens aims at described Sony ericsson mobile comm ab, in order to collimate light that this each solid-state devices sends and projection toward described dodging device and apparatus for shaping.Perhaps, also comprise imaging len or the imaging lens group that places between described dodging device and apparatus for shaping and the described light transmission piece.
As the technical scheme that realizes the utility model design still, provide a kind of mobile phone, comprise communication module, especially, also comprise the high power solid state light source in the such scheme; Light collecting device is collected from the past microminiature video modulator of light projection of this high power solid state light source; This microminiature video modulator also connects the mobile video signal processor to receive the video signal from this mobile video signal processor, projects image light signals toward a microminiature projection lens; Described mobile video signal processor is by connecting the video input signals that receives from the video plug, or receives the Image Communication data from the mobile phone baseband processor, with the described video signal of decoding output.
Adopt the high power solid state light source of above-mentioned each technical scheme, when effectively reducing the optical power density of exciting light, improved the utilization rate of light source, especially improved the light service efficiency of solid state light emitter in application exciting light.
Description of drawings
Fig. 1 has illustrated the shape relation between existing light source outgoing hot spot and the projection field viewing area;
Fig. 2 has illustrated the structure of the utility model light source;
Fig. 3 has illustrated the utility model to use the ODE element to spare the embodiment of light and shaping;
Fig. 4 has illustrated the utility model to use the integrating rod array to spare the embodiment of light and shaping;
Fig. 5 has illustrated the mobile phone of employing the utility model light source to realize the part-structure block diagram of projecting function.
The specific embodiment
Below, the most preferred embodiment shown in is further set forth the utility model in conjunction with the accompanying drawings.
Fig. 2 has illustrated the structure of the utility model high power solid state light source: comprise Sony ericsson mobile comm ab, carry the light transmission piece of optical wavelength conversion material, especially also comprise spare the dodging device that light is handled from the light of Sony ericsson mobile comm ab, and the apparatus for shaping that is used for changing the light spot shape of the light of handling through even light, uniform beam is projected on the described light transmission piece to form a hot spot with reservation shape on this light transmission piece.Wherein, Sony ericsson mobile comm ab can be a great power LED, or the laser diode that preferably has high power density.Optical wavelength conversion material comprises fluorescent material, luminescent dye or nano luminescent material.Light spot shape from the light of Sony ericsson mobile comm ab is circular or oval, and described reservation shape be circle, rectangle or square.
As shown in Figure 3, can adopt diffraction optical element 5 to realize described apparatus for shaping, realize described even light processing simultaneously.Described diffraction optical element (DOE, Diffractive optical element) refers to a kind of special optical element, generally be to calculate the holographic element that produces by computer, by controlling shape, the degree of depth and the distribution of its surperficial micro-structural (for example optical wavelength order of magnitude), make light that diffraction take place when penetrating this element, the phase place that produces the corrugated changes; Because the form of each diffraction element is different with the degree of depth, by selected difform unit and combination thereof, the corrugated that each unit is produced is superimposed, and then produces the spatial light intensity distribution of needed transmitted light.For example, U.S. Pat 7,251,41282 disclosed the backlight module of a kind of DOE of use.The DOE element of different designs can have different even light and shaping effect.In embodiment of the present utility model, can adopt a kind of launching spot to be shaped to a uniform rectangle output facula with 4: 3 Aspect Ratios Any shape.
Can also adopt integrating rod to realize described apparatus for shaping, realize described even light processing simultaneously.As shown in Figure 4, described dodging device and apparatus for shaping close integrating rod 6, the front end of this integrating rod 6 is collected from the light of Sony ericsson mobile comm ab 1, make incident light superimposed by constantly reflecting in integrating rod, thereby the rear end at integrating rod forms even light distribution, shape to integrating rod is controlled, and then can play the effect of shaping simultaneously to light beam.Handle through the even light and the shaping of integrating rod like this, the uniform beam with described reservation shape that is penetrated by the integrating rod rear end will and throw toward projecting on the light transmission piece 4.When the rear end of described integrating rod 6 bore big and when having exceeded the emergent light aperture that the utility model light source limited, or when having the big angle of emergence (such as but not limited to surpassing 30 degree) by the light that this rear end bore penetrates, for make light beam with suitable incidence angle and spot size to optical wavelength conversion material, the utility model can also comprise imaging len or the imaging lens group 3 that is arranged on the integrating rod rear end as shown in Figure 4, with imaging mode the uniform beam with this reservation shape from integrating rod 7 rear ends is throwed toward described light transmission piece.Increase a described imaging len or imaging lens group 3 between DOE element 5 that equally also can be in Fig. 3 and the light transmission piece 4.
In addition, can also be improved to Fig. 4 embodiment: with fly's-eye lens to replacing described integrating rod; Every fly's-eye lens of fly's-eye lens centering is periodicity emphasis multiple bank cloth by small lens unit and forms, the parameter (such as but not limited to size) that constitutes the lens unit of these two fly's-eye lenses can be the same, also can be different, that is to say that the lens unit between these two fly's-eye lenses can be one to one the corresponding relation of relation or one-to-many (two and more than).Like this, the micro lens unit that repeats to arrange in first fly's-eye lens can be cut into incident light a lot of pieces, form the uniform light spots of reservation shape again through the effect of lens unit in second fly's-eye lens, utilize a collector lens or collector lens group that these light with uniform light spots of reservation shape are converged the overlapping past described light transmission piece 4 of light beam projection that obtains again, on this light transmission piece 4, produce a uniform light spots with this reservation shape.
In the various embodiments described above, can also shown in Fig. 3 or 4, increase collimation lens 2 when being necessary and aim at Sony ericsson mobile comm ab 1, will become nearly directional light (such as but not limited to the light beam of the angle of divergence), mate the selected DOE element or the specification of integrating rod from the optical alignment of this Sony ericsson mobile comm ab 1 less than 15 degree.Find in the utility model test that aperture, the front and back ratio that integrating rod 6 is optimized is 1.5: 1～4: 1, can obtain even preferably light effect.Especially current back aperture ratio is 2: 1 o'clock, and the optimization ratio of the front aperture of integrating rod and length is preferably 1: 8.With square outgoing hot spot is example, and integrating rod is designed to the reflective butt tetrapyamid shape of inwall, and the light collection efficiency of present embodiment can reach more than 90%.
In the embodiment of Fig. 4, it is also conceivable that at the front end of described integrating rod 6 and place the dispersion angle that scattering sheet is used for amplifying the nearly collimated light beam that is incident in the integrating rod inlet, and then strengthen the even light effect of integrating rod.Because existing scattering sheet has certain light transmission loss, increase scattering sheet and whether will consider as one sees fit.
In the utility model the various embodiments described above, light transmission piece 4 is not defined as a fixture, this light transmission piece 4 can also be motion (rotate or move) state with respect to incident beam, so that further reach the purpose of protecting optical wavelength conversion material by rotating irradiated optical wavelength conversion material; When described optical wavelength conversion material divides kind subregion on this light transmission piece 4 to distribute, different optical wavelength conversion materials rotate shine the purpose that can also reach conversion stimulated luminescence color.
The block diagram of Fig. 5 has illustrated one to adopt the mobile phone of the utility model light source to rely to realize the part-structure of projecting function.Described mobile phone comprises communication module, battery of mobile phone; Also comprise the utility model light source, the light beam of being exported with reservation shape hot spot is by the past microminiature video modulator of collection projection of light collecting device, after video signal modulation, produce image light signals from the mobile video signal processor, this image light signals projection is toward a microminiature projection lens, through the past wall of this microminiature projection lens projects or other projection screen.This mobile video signal processor can be the special microprocessor of a connection mobile phone baseband processor, reception is from the video input signals of various video plugs, or reception is decoded and is exported described video signal from the Image Communication data of described mobile phone baseband processor.This mobile video signal processor can also be built in the mobile phone baseband processor, thereby is received from the video input signals of various video plugs or from the communication data of wireless communication RF transceiver module by the mobile phone baseband processor.Adopt the utility model light source, can prolong the service time of the battery of mobile phone that uses projecting function.
Claims (11)
1. a high power solid state light source comprises Sony ericsson mobile comm ab, carries the light transmission piece of optical wavelength conversion material; It is characterized in that:
Also comprise spare the dodging device that light is handled from the light of this Sony ericsson mobile comm ab, and the apparatus for shaping that is used for changing the light spot shape of the light of handling through even light, uniform beam is projected on the described light transmission piece to form a hot spot with reservation shape on this light transmission piece.
2. high power solid state light source according to claim 1 is characterized in that:
Described Sony ericsson mobile comm ab comprises LED or laser diode.
3. high power solid state light source according to claim 1 is characterized in that:
Described optical wavelength conversion material comprises fluorescent material, luminescent dye or nano luminescent material.
4. high power solid state light source according to claim 1 is characterized in that:
Light spot shape from the light of described Sony ericsson mobile comm ab is oval or circular, and described reservation shape be circle, rectangle or square.
5. high power solid state light source according to claim 1 is characterized in that:
Described dodging device and apparatus for shaping are combined into diffraction optical element, handle uniform beam and the past described light transmission piece of projection that has described reservation shape with generation to spare light and shaping from the light of described Sony ericsson mobile comm ab.
6. high power solid state light source according to claim 1 is characterized in that:
It is right that described dodging device and apparatus for shaping are combined into the fly's-eye lens that is made of two fly's-eye lenses, every fly's-eye lens is periodicity emphasis multiple bank cloth by small lens unit and forms, and the lens unit between these two fly's-eye lenses is one to one or a pair of two and above corresponding relation;
Also comprise a collector lens or set of lenses, from the light of described Sony ericsson mobile comm ab through described fly's-eye lens to after converge projection toward described light transmission piece through this collector lens or set of lenses again.
7. high power solid state light source according to claim 1 is characterized in that:
Described dodging device and apparatus for shaping are combined into integrating rod, the front end of this integrating rod collects to spare light and shaping processing from the light of described Sony ericsson mobile comm ab, and the bore of rear end is described reservation shape has this reservation shape with generation a uniform beam and the past described light transmission piece of projection.
8. according to claim 5,6 or 7 described high power solid state light sources, it is characterized in that:
Comprise that also collimation lens aims at described Sony ericsson mobile comm ab, in order to collimate light that this each solid-state devices sends and projection toward described dodging device and apparatus for shaping.
9. according to claim 5 or 7 described high power solid state light sources, it is characterized in that:
Also comprise the imaging len or the imaging lens group that place between described dodging device and apparatus for shaping and the described light transmission piece.
10. high power solid state light source according to claim 7 is characterized in that:
The scattering sheet that also comprises the front end that is positioned over described integrating rod.
11. a mobile phone comprises communication module, it is characterized in that:
Also comprise as each described high power solid state light source of claim 1～10; Light collecting device is collected from the past microminiature video modulator of light projection of this high power solid state light source; This microminiature video modulator also connects the mobile video signal processor to receive the video signal from this mobile video signal processor, projects image light signals toward a microminiature projection lens;
Described mobile video signal processor is by connecting the video input signals that receives from the video plug, or receives the Image Communication data from the mobile phone baseband processor, with the described video signal of decoding output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205625336U CN201885062U (en) | 2010-10-08 | 2010-10-08 | High-power solid-state light source and mobile phone with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205625336U CN201885062U (en) | 2010-10-08 | 2010-10-08 | High-power solid-state light source and mobile phone with same |
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| CN201885062U true CN201885062U (en) | 2011-06-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076712A (en) * | 2011-10-26 | 2013-05-01 | 深圳市光峰光电技术有限公司 | Projection light source and projection device using same |
| WO2013082794A1 (en) * | 2011-12-09 | 2013-06-13 | 深圳市光峰光电技术有限公司 | Light source and projection system applying same |
| CN103499882A (en) * | 2013-10-10 | 2014-01-08 | 山东神戎电子股份有限公司 | Rectangular spot shaping device using light cone |
| CN108255004A (en) * | 2016-12-28 | 2018-07-06 | 佳能株式会社 | Light supply apparatus and image projection device |
| JP2018109747A (en) * | 2016-12-28 | 2018-07-12 | キヤノン株式会社 | Light source device and image projection device |
| CN110161790A (en) * | 2016-12-19 | 2019-08-23 | 海信集团有限公司 | A kind of DLP ray machine lighting system |
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2010
- 2010-10-08 CN CN2010205625336U patent/CN201885062U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076712A (en) * | 2011-10-26 | 2013-05-01 | 深圳市光峰光电技术有限公司 | Projection light source and projection device using same |
| CN103076712B (en) * | 2011-10-26 | 2015-05-27 | 深圳市光峰光电技术有限公司 | Projection light source and projection device using same |
| WO2013082794A1 (en) * | 2011-12-09 | 2013-06-13 | 深圳市光峰光电技术有限公司 | Light source and projection system applying same |
| CN103499882A (en) * | 2013-10-10 | 2014-01-08 | 山东神戎电子股份有限公司 | Rectangular spot shaping device using light cone |
| CN110161790A (en) * | 2016-12-19 | 2019-08-23 | 海信集团有限公司 | A kind of DLP ray machine lighting system |
| CN108255004A (en) * | 2016-12-28 | 2018-07-06 | 佳能株式会社 | Light supply apparatus and image projection device |
| JP2018109747A (en) * | 2016-12-28 | 2018-07-12 | キヤノン株式会社 | Light source device and image projection device |
| CN108255004B (en) * | 2016-12-28 | 2021-03-30 | 佳能株式会社 | Light source device and image projection device |
| JP7071101B2 (en) | 2016-12-28 | 2022-05-18 | キヤノン株式会社 | Light source device and image projection device |
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Address after: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee after: APPOTRONICS Corp.,Ltd. Address before: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. |
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Address after: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518057 Fangda Building, South District, Nanshan District, Shenzhen City, Guangdong Province Patentee before: APPOTRONICS Corp.,Ltd. |
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