CN204201727U - A kind of lighting device, vehicle laser headlight and automobile - Google Patents
A kind of lighting device, vehicle laser headlight and automobile Download PDFInfo
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- CN204201727U CN204201727U CN201420562532.XU CN201420562532U CN204201727U CN 204201727 U CN204201727 U CN 204201727U CN 201420562532 U CN201420562532 U CN 201420562532U CN 204201727 U CN204201727 U CN 204201727U
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Abstract
The utility model discloses a kind of lighting device, vehicle laser headlight and automobile, lighting device comprises LASER Light Source, activating system, light collecting system, even photosystem and light outgoing system; Described LASER Light Source comprises the blue laser for providing exciting light; Activating system is positioned in the exit direction of described LASER Light Source, for receiving described LASER Excited Fluorescence powder, produces fluorescence; Light collecting system for collecting the fluorescence that described activating system produces and the laser reflected from described activating system, and makes the beam projecting of collection to even photosystem; Even photosystem is positioned at the exit end of described light collecting system, for carrying out mixing dodging to the fluorescence of incidence and laser, obtains white light; Light outgoing system is positioned at the exit end of described even photosystem, for collecting the white light of incidence and collimating process.Lighting device of the present utility model, time on vehicle laser headlight and automobile, can improve the performance of car headlamp, and scheme cost is also lower.
Description
[technical field]
The utility model relates to lighting device, particularly relates to a kind of lighting device that can be applicable to vehicle laser headlight.
[background technology]
2011, German Bayerische Motorne Werke Aktiengeellschaft and company of Audi successively claimed and assemble laser headlight by the concept car of its volume production in 2014.In May, 2014, company of Audi takes the lead in having issued the R8 LMX vehicle being equipped with laser headlight.The laser headlight be applied on automobile becomes focus for the moment.At present, the laser headlight that automobile uses is had to the scheme utilizing Ultra-Violet Laser secondary excitation mode to produce white light, also have and adopt tricolor laser mixing to produce the scheme of white light as headlight for vehicles, if notification number is CN103499061A, name is called the patent application of three-primary-color laser automobile headlamp.Above-mentioned two schemes as headlight for vehicles, front one due to laser excitation efficiency not good, cause brightness of illumination undesirable.Rear one is due to current green laser slower development, and power is less, and expensive, there is corresponding technical bottleneck and Cost Problems.
[utility model content]
Technical problem to be solved in the utility model is: make up above-mentioned the deficiencies in the prior art, proposes a kind of lighting device, vehicle laser headlight and automobile, and lighting device lighting brightness is desirable, and cost is also lower.
Technical problem of the present utility model is solved by following technical scheme:
A kind of lighting device, comprises LASER Light Source, activating system, light collecting system, even photosystem and light outgoing system; Described LASER Light Source comprises the blue laser for providing exciting light; Activating system is positioned in the exit direction of described LASER Light Source, for receiving described LASER Excited Fluorescence powder, produces fluorescence; Light collecting system for collecting the fluorescence that described activating system produces and the laser reflected from described activating system, and makes the beam projecting of collection to even photosystem; Even photosystem is positioned at the exit end of described light collecting system, for carrying out mixing dodging to the fluorescence of incidence and laser, obtains white light; Light outgoing system is positioned at the exit end of described even photosystem, for collecting the white light of incidence and collimating process.
A kind of vehicle laser headlight, the lighting device in described vehicle laser headlight is lighting device as above.
A kind of automobile, the headlamp of described automobile is vehicle laser headlight as above.
The beneficial effect that the utility model is compared with the prior art is:
Lighting device of the present utility model, adopts blue laser light source activation fluorescent material to produce fluorescence, collects fluorescence and not by the laser of fluorescent absorption through reflection, fluorescence and laser is mixed to get white light, as illumination light.Owing to adopting technology maturation and the lower blue laser light source of price, greatly reduce cost.And pass through the mode of blue laser remote excitation fluorescent material, relative to traditional mode by Ultra-Violet Laser secondary excitation, launching efficiency is also higher, and brightness of illumination is more satisfactory.Lighting device of the present utility model, brightness of illumination is desirable, and cost is lower, time on vehicle laser headlight and automobile, can improve the performance of car headlamp, and scheme cost is also lower.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the lighting device of the utility model detailed description of the invention one;
Fig. 2 is the cross-sectional view of the fluorescence colour wheel in the utility model detailed description of the invention one;
Fig. 3 is the distribution schematic diagram of the phosphor powder layer on the fluorescence colour wheel in the utility model detailed description of the invention one;
Fig. 4 is the structural representation of the lighting device of the utility model detailed description of the invention two;
Fig. 5 is the structural representation of the lighting device of the utility model detailed description of the invention three;
Fig. 6 is the distribution schematic diagram of the phosphor powder layer on the fluorescence colour wheel in the lighting device of the utility model detailed description of the invention four.
[detailed description of the invention]
Contrast accompanying drawing below in conjunction with detailed description of the invention the utility model is described in further details.
Detailed description of the invention one
As shown in Figure 1, be the structural representation of lighting device in this detailed description of the invention.Lighting device comprises LASER Light Source 1, activating system 2, light collecting system 3, even photosystem 4 and light outgoing system 5.
Wherein, LASER Light Source 1 comprises the blue laser for providing exciting light.Particularly, as shown in Figure 1, LASER Light Source 1 comprises organizes sub-light source more, and sub-light source comprises blue semiconductor laser 101, optical shaping lens 102 and optical fiber 103.The incidence end of laser instrument 101 exit end alignment optical shaping lens 102, the exit end of optical shaping lens 102 aims at the incidence end of optical fiber 103, optical shaping lens 102 to the blue laser shaping of incidence and coupled into optical fibres 103, then by the outgoing of N*1 fiber coupler.The exit end of multiple optical fiber 103 gathers together as the exit end of LASER Light Source 1.By organizing the combination of sub-light source, high-power excitation source can be realized more.
Activating system 2 is positioned at the exit direction of LASER Light Source 1, for receiving LASER Excited Fluorescence powder, produces fluorescence.Particularly, as shown in Figure 1, activating system 2 comprises fluorescence colour wheel and drives the motor 203 of described fluorescence colour wheel rotation.The phosphor powder layer 201 that fluorescence colour wheel comprises substrate 202 and is arranged on described substrate 202.The position of described fluorescence colour wheel makes phosphor powder layer 201 can receive incident laser.Motor 203 High Rotation Speed, fluorescence colour wheel is driven to rotate, make between phosphor powder layer 201 and the exciting light of incidence, to do relative motion at a high speed, when making fluorescent material because exciting heat production also not reach thermal quenching temperature, be separated with exciting light with regard to timely, thus effective heat fade solving fluorescent material and cause because high power laser light excites, ensure the heat endurance of fluorescent material.Phosphor powder layer 201 is preferably nitrogen oxide system fluorescent material (as: matching grand fluorescent material) or Group III-V compound semiconductor nanoparticle fluorescence powder (as: indium phosphide).Above-mentioned fluorescent material is high for the heat resistance of high-power incident laser, can further improve the heat endurance of phosphor powder layer 201.
Preferably, the substrate of fluorescence colour wheel can arrange metallic reflective coating and anti-reflection film protective layer improves.As shown in Figure 2, be the cross-sectional view of fluorescence colour wheel in this detailed description of the invention, fluorescence colour wheel comprises substrate 202 and ecto-entad and sets gradually anti-reflection film protective layer 205 on a substrate 202, phosphor powder layer 201, metallic reflective coating 204.Fluorescent material is scribbled in phosphor powder layer 201; fluorescence is produced for receiving laser excitation; metal highly reflecting films 204 in the middle of phosphor powder layer 201 and substrate 202 with reflection not by laser that phosphor powder layer 201 absorbs; outermost anti-reflection protective layer 205 is used as optical protective layer; it is coated with anti-reflection film, the fluorescence full impregnated mistake exciting generation can be made.By arranging above-mentioned 3-tier architecture, the laser exciting the fluorescence of generation and reflection in fluorescence colour wheel all can efficiently outgoing, and then improves the brightness of the white light produced.
Further preferably, as shown in Figure 3, the phosphor powder layer on fluorescence colour wheel is arranged according to annular, and described annular is divided into four sections, is coated with yellow fluorescence bisque 2011, green phosphor layer 2012, yellow fluorescence bisque 2011 and green phosphor layer 2012 respectively.When blue laser excites, produce gold-tinted and green glow respectively, gold-tinted, green glow do not have absorbed blue laser to be mixed into blue gold-tinted, blue green light with part respectively.Employing annular spread designs, and can improve the utilization rate of phosphor powder layer.And annular being divided into multistage, then when exciting, blue gold-tinted and blue green light can be mixed into white light in the mode of sequential superposition by the segmentation phosphor powder layer of rotation.The hop count that annular is divided equally more (such as six sections, eight sections even more multistage), excites the yellow fluorescence of generation, and the staggered frequency of green fluorescence is higher, thus the colour stability of the white light obtained after making to mix is better.
Light collecting system 3 for collecting the fluorescence of activating system 2 generation and the laser from described activating system 2 reflection, and makes the beam projecting of collection to even photosystem.Particularly, as shown in Figure 1, light collecting system 3 is arc-shaped reflecting mirror, arc-shaped reflecting mirror is provided with a loophole, the laser that LASER Light Source 1 provides is after condenser lens 6 focuses on, irradiated the fluorescent material of activating system 2 by loophole, arc-shaped reflecting mirror collects the fluorescence that activating system 2 produces and the laser reflected from activating system 2, and by described fluorescence and laser reflection to even photosystem 4.Curved reflectors is preferably hemispherical or a hemispheric part, and the phosphor powder layer 201 in activating system is placed on the first point near this hemispherical centre of sphere, and the entry position of even photosystem 4 is placed on the second point near this hemispherical centre of sphere.First symmetrical about this hemispheric centre of sphere with second point, like this, high-power laser to be irradiated on phosphor powder layer 201 and to excite generation fluorescence, fluorescence and the laser do not absorbed by phosphor powder layer 201 reflect through arc-shaped reflecting mirror to be collected by even photosystem 4, so just effectively can ensure that light arrives the efficiency of even photosystem 4 higher.
Even photosystem 4 is positioned at the exit end of light collecting system 3, for carrying out mixing dodging to the fluorescence of incidence and laser, obtains white light.Particularly, as shown in Figure 1, even photosystem 4 is square rod lens.Square rod is generally rectangular bar-shaped, and end surface shape is rectangle, and inside is divided into hollow and solid two kinds.The square rod inside of hollow is coated with high-reflecting film and carrys out reflection ray, and solid square rod then utilizes total reflection principle to realize reflection.In this detailed description of the invention, the laser of solid square rod to incidence is adopted to be totally reflected.When laser and after exciting the fluorescence of generation to enter square rod from one end at a certain angle, light starts constantly to reflect in inside, every secondary reflection is just equivalent to define a new virtual light source, the light of final outgoing is equivalent to the superposition of these virtual light sources, laser mixes with fluorescence better, therefore better from the uniformity of the white light of square rod other end outgoing.
Light outgoing system 5 is positioned at the exit end of even photosystem 4, for collecting the white light of incidence and collimating process.Particularly, as shown in Figure 1, light outgoing system 5 comprises half paraboloid reflector 501 and diffuser plate 502.The exit end portion of square rod lens is positioned on the focal position of half paraboloid reflector 501, and the light that the outgoing end of square rod lens is penetrated plays a role as spot light, thus controls the light path of adjustment illumination white light L better.Diffuser plate 502 is positioned on the beam projecting direction of described half paraboloid reflector 501.By half paraboloid reflector 501 and diffuser plate 502, the white light of square rod outgoing is effectively collected, and is collimated outgoing.From final exit direction, achieve the outgoing adjustment of relative square rod lens emergent light direction half-twist, meanwhile, also can improve the color homogeneity of illumination white light L further.Half paraboloid reflector 501 also can design according to concrete illumination light L accordingly.
A kind of vehicle laser headlight using above-mentioned lighting device is also provided in this detailed description of the invention, and in car headlamp, adopts the automobile of this vehicle laser headlight.
The lighting device of this detailed description of the invention, adopts blue laser excitated fluorescent powder, obtains white light, as illumination light after mixing fluorescence and laser.Owing to adopting technology maturation and the lower blue laser light source of price in lighting device, greatly reduce cost.And pass through the mode of blue laser remote excitation fluorescent material, relative to traditional mode by Ultra-Violet Laser secondary excitation, launching efficiency is also higher, and brightness of illumination is more satisfactory.Lighting device of the present utility model, brightness of illumination is desirable, and cost is lower, time on vehicle laser headlight and automobile, can improve the performance of car headlamp, and scheme cost is also lower.
Detailed description of the invention two
This detailed description of the invention is with the difference of embodiment one: the concrete composition of light outgoing system and the relative position with even photosystem thereof.
As shown in Figure 4, be the structural representation of the lighting device in this detailed description of the invention.Lighting device comprises LASER Light Source 1, activating system 2, light collecting system 3, even photosystem 4 and light outgoing system 5.The relative position of each system is arranged, and identical with detailed description of the invention one of operation principle, in this not repeat specification.Below be only described in detail for difference.Light outgoing system 5 comprises full paraboloid reflecting cup 501 ' and diffuser plate 502.The exit end portion of square rod lens is positioned at the summit of full paraboloid reflecting cup 501 ', thus collects the white light of square rod outgoing better and the light path of control adjustment illumination white light L.Diffuser plate 502 is positioned on the beam projecting direction of described full paraboloid reflecting cup 501 '.By full paraboloid reflecting cup 501 ' and diffuser plate 502, the white light of square rod outgoing is effectively collected, and is collimated outgoing.From final exit direction, achieve the outgoing identical with square rod lens emergent light direction and adjust.
The lighting device of this detailed description of the invention, only be that the white light of square rod outgoing is collected the optics difference of collimation, the adjustment in final emergent light direction is different, all the other concrete composition and working principles are identical with detailed description of the invention one, therefore there is brightness of illumination ideal equally, and lower-cost advantage.When on vehicle laser headlight and automobile, the performance of car headlamp can be improved equally, and scheme cost is also lower.
Detailed description of the invention three
This detailed description of the invention is with the difference of embodiment one: the concrete composition of light outgoing system and the relative position with even photosystem thereof.
As shown in Figure 5, be the structural representation of the lighting device in this detailed description of the invention.Lighting device comprises LASER Light Source 1, activating system 2, light collecting system 3, even photosystem 4 and light outgoing system 5.The relative position of each system is arranged, and identical with detailed description of the invention one of operation principle, in this not repeat specification.Below be only described in detail for difference.Light outgoing system 5 comprises convex lens 501 ".The exit end portion of square rod lens is positioned at convex lens 501 " focal position, thus collect the white light of square rod outgoing preferably.About the collection of the emergent light of square rod, except the parabolic shape reflector used described in aforementioned two embodiments, outside the convex lens of this detailed description of the invention, other device can collecting collimates exiting light rays all can be applicable in lighting device.
The lighting device of this detailed description of the invention, the collimating optic only during white light outgoing has difference, and all the other concrete composition and working principles are identical with detailed description of the invention one, therefore have brightness of illumination ideal equally, and lower-cost advantage.When on vehicle laser headlight and automobile, the performance of car headlamp can be improved equally, and scheme cost is also lower.
Detailed description of the invention four
This detailed description of the invention is from the difference of embodiment one: the fluorescence colour wheel used in LASER Light Source and activating system has different.
Lighting device in this detailed description of the invention still comprises LASER Light Source, activating system, light collecting system, even photosystem and light outgoing system.Just LASER Light Source is except the blue laser comprised for providing exciting light, also comprises the red laser for providing mixing ruddiness.Namely adopt the laser of different wave length as initial lasing light emitter in this detailed description of the invention, such as select 450nm blue laser and the combination of 635nm red laser, blue laser outgoing blue light is used for excitated fluorescent powder and produces fluorescence, and red laser outgoing ruddiness participates in mixed light to be mixed to get white light.Correspondingly, the distribution signal of the fluorescence colour wheel in activating system as shown in Figure 6, phosphor powder layer on fluorescence colour wheel is arranged according to annular, and described annular is divided into three sections, is coated with yellow fluorescence bisque 2011, green phosphor layer 2012 and reflection to red light material layer 2013 respectively.During work, the interval of blue laser and red laser shoot laser in the rotating speed driven by governor motor and LASER Light Source, make when yellow fluorescence bisque 2011 on fluorescence colour wheel or green phosphor layer 2012 forward laser irradiating position to, blue laser work in LASER Light Source, red laser does not work, thus outgoing blue light, excite and produce gold-tinted or green glow; When on fluorescence colour wheel, reflection to red light material layer 2013 forwards laser irradiating position to, in LASER Light Source, blue laser does not work, red laser work, thus outgoing ruddiness, by ruddiness outgoing from activating system after the reflection of reflection to red light material layer.Finally, gold-tinted adds unabsorbed blue light, and green glow adds unabsorbed blue light, and ruddiness three-beam mixes to enter in even photosystem higher than the sequential staggered frequence of human eye response frequency, thus produces white light after mixing.
Adopt the setting of above-mentioned multi-laser and fluorescence colour wheel, laser component cost can be caused to rise to some extent although increase lasing light emitter, but only use blue light relative to embodiment one, the scheme of gold-tinted and green glow mixing, introduce ruddiness in this detailed description of the invention and participate in mixed light, make the color developing of the white light obtained after mixing better, be more tending towards natural daylight.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, make some substituting or obvious modification without departing from the concept of the premise utility, and performance or purposes identical, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. a lighting device, is characterized in that: comprise LASER Light Source, activating system, light collecting system, even photosystem and light outgoing system; Described LASER Light Source comprises the blue laser for providing exciting light; Activating system is positioned in the exit direction of described LASER Light Source, for receiving described LASER Excited Fluorescence powder, produces fluorescence; Light collecting system for collecting the fluorescence that described activating system produces and the laser reflected from described activating system, and makes the beam projecting of collection to even photosystem; Even photosystem is positioned at the exit end of described light collecting system, for carrying out mixing dodging to the fluorescence of incidence and laser, obtains white light; Light outgoing system is positioned at the exit end of described even photosystem, for collecting the white light of incidence and collimating process.
2. lighting device according to claim 1, is characterized in that: described LASER Light Source comprises organizes sub-light source more, and described sub-light source comprises blue semiconductor laser, optical shaping lens and optical fiber; The exit end of described blue semiconductor laser aims at the incidence end of described optical shaping lens, and the exit end of described optical shaping lens aims at the incidence end of described optical fiber; The exit end of multiple optical fiber of described many group sub-light sources gathers together as the exit end of described LASER Light Source.
3. lighting device according to claim 1, is characterized in that: the motor that described activating system is fluorescence colour wheel and drives described fluorescence colour wheel to rotate, the phosphor powder layer that described fluorescence colour wheel comprises substrate and arranges on the substrate; The position of described fluorescence colour wheel makes described phosphor powder layer can receive described laser.
4. lighting device according to claim 3, is characterized in that: described fluorescence colour wheel also comprises setting metallic reflective coating on the substrate and anti-reflection film protective layer; From outside to inside, described substrate is followed successively by described anti-reflection film protective layer, described phosphor powder layer and described metallic reflective coating.
5. lighting device according to claim 3, is characterized in that: described LASER Light Source also comprises the red laser for providing mixing ruddiness; Described phosphor powder layer is arranged according to annular on the substrate, and described annular is divided into three sections, is coated with yellow fluorescence bisque, green phosphor layer and reflection to red light material layer respectively.
6. lighting device according to claim 3, it is characterized in that: described phosphor powder layer is arranged according to annular on the substrate, described annular is divided into four sections, is coated with yellow fluorescence bisque, green phosphor layer, yellow fluorescence bisque and green phosphor layer respectively.
7. lighting device according to claim 1, is characterized in that: described smooth outgoing system comprises half paraboloid reflector and diffuser plate; The exit end of described even photosystem is positioned on the focal position of described half paraboloid reflector, and described diffuser plate is positioned on the beam projecting direction of described half paraboloid reflector.
8. lighting device according to claim 1, is characterized in that: described smooth outgoing system comprises full paraboloid reflecting cup and diffuser plate; The exit end of described even photosystem is positioned at the summit of described full paraboloid reflecting cup, and described diffuser plate is positioned on the beam projecting direction of described full paraboloid reflecting cup.
9. a vehicle laser headlight, is characterized in that: the lighting device in described vehicle laser headlight is the lighting device described in claim 1 to 8 any one.
10. an automobile, is characterized in that: the headlamp of described automobile is vehicle laser headlight according to claim 9.
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| CN201420562532.XU CN204201727U (en) | 2014-09-26 | 2014-09-26 | A kind of lighting device, vehicle laser headlight and automobile |
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| CN201420562532.XU CN204201727U (en) | 2014-09-26 | 2014-09-26 | A kind of lighting device, vehicle laser headlight and automobile |
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| CN105546453A (en) * | 2016-02-01 | 2016-05-04 | 上海信耀电子有限公司 | Optical fiber conduction laser vehicle lamp |
| CN105674184A (en) * | 2016-02-02 | 2016-06-15 | 陕西科技大学 | Environment-friendly type laser automobile head lamp and manufacturing method thereof |
| CN105698070A (en) * | 2016-03-25 | 2016-06-22 | 苏州科医世凯半导体技术有限责任公司 | Long-distance projection lamp based on fluorescence excitation |
| CN106681094A (en) * | 2016-12-23 | 2017-05-17 | 海信集团有限公司 | Fluorescence excitation device, projection light source and projection equipment |
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| CN105674184A (en) * | 2016-02-02 | 2016-06-15 | 陕西科技大学 | Environment-friendly type laser automobile head lamp and manufacturing method thereof |
| CN107036025A (en) * | 2016-02-03 | 2017-08-11 | 保时捷股份公司 | Headlamp |
| CN105698070A (en) * | 2016-03-25 | 2016-06-22 | 苏州科医世凯半导体技术有限责任公司 | Long-distance projection lamp based on fluorescence excitation |
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| CN106681094A (en) * | 2016-12-23 | 2017-05-17 | 海信集团有限公司 | Fluorescence excitation device, projection light source and projection equipment |
| CN106707669A (en) * | 2016-12-23 | 2017-05-24 | 海信集团有限公司 | Fluorescence excitation device, projection light source and projection equipment |
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| CN108916665A (en) * | 2017-04-14 | 2018-11-30 | 湖北晶瓷激光照明技术有限公司 | High color rendering index (CRI) laser white light obtains device and its implementation |
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