CN208253445U - A kind of laser conduction device - Google Patents

Abstract

The utility model provides a kind of laser conduction device, belongs to technical field of laser illumination.The laser conduction device includes the laser light source that optical center is on same straight line, polygon prism, condenser lens, fluorescence conversion device and beam shaping, the light beam of the laser light source output is incident on the condenser lens after the multi-angle remission of the polygon prism, the adjustment light beam focusing that multi-angle remission obtains is incident on the fluorescence conversion device to excite the fluorescence conversion device to generate excitation beam by the condenser lens, the excitation beam with white light beam is mixed by the focus on light beam of the condenser lens incidence, the white light beam is incident to the beam shaping, the beam shaping uniformly projects after the white light beam shaping is adjusted to default hot spot.The laser conduction device is linearly arranged, makes the car light more compact for configuring the laser conduction device, be easily installed maintenance making laser conduction and hot spot form more accurate while each element.

Description

A kind of laser conduction device

Technical field

The utility model relates to technical field of laser illumination, in particular to a kind of laser conduction device.

Background technique

With the fast development of modern social economy, the car ownership of countries in the world rapidly enhances, wherein the vapour in China Vehicle ownership speedup is nearly all in 10% or more, since the radix of China's car ownership is also extremely huge, China's automobile Ownership and sales volume are in even more explosive growth.Vehicle, which increases, has brought bigger pressure to traffic safety, and people are to vehicle matter The attention rate of amount and safe coefficient also more improves.The lighting devices such as the headlight of vehicle play the driving safety of support vehicles Important function, thus headlamp illumination system also with automotive engineering development and develop rapidly, from HID to LED also just several years when Between, 5000 hours from 1000 hours of halogen lamp to LED light of car light service life, power consumption also drops to 20-30 watts from 50-65 watts.Swash Wide lamp is it will be evident that LED headlight luminous intensity is 100 lumens/watts relative to LED headlight advantage, and laser has reached 170 streams Bright/watt.In addition, 300 meters of irradiation distance of the irradiation distance of laser headlight also up to 600 meters, far beyond LED.Laser Headlight is the ideal substitute for substituting all present vehicle-mounted light sources at present, is more in line with the energy conservation and environmental protection trend of future automobile.

But existing vehicle laser integrate headlight technology often with vehicle integration, when being only applicable to vehicle complete vehicle It is long, it is poor for applicability, flexibility is low, volume is larger and at high cost, for automotive aftermarket and assembling market, do not have There is flexible repacking property, and price is higher, cannot popularize.

Utility model content

The purpose of this utility model is to provide a kind of laser conduction devices, to improve the hardware that above-mentioned laser integrates headlight Manufacturing cost is high, assembles the problem of flexibility difference.

The embodiments of the present invention are achieved in that

The utility model provides a kind of laser conduction device, the laser conduction device include laser light source, polygon prism, Condenser lens, fluorescence conversion device and beam shaping, it is the laser light source, the polygon prism, the condenser lens, described glimmering The optical center of light conversion device and the beam shaping is on same straight line.Described in the light beam of the laser light source output passes through The condenser lens, the adjustment light beam that the condenser lens obtains multi-angle remission are incident on after the multi-angle remission of polygon prism Focusing is incident on the fluorescence conversion device to excite the fluorescence conversion device to generate excitation beam, the excitation beam with White light beam is mixed by the focus on light beam of the condenser lens incidence, the white light beam is incident to the beam shaping, The beam shaping uniformly projects after the white light beam shaping is adjusted to default hot spot.

In the utility model optional embodiment, the laser light source includes semiconductor laser array.

In the utility model optional embodiment, it is 400-450 nanometers that the semiconductor laser array, which issues wavelength, Superlaser.

In the utility model optional embodiment, the laser light source further includes constant current laser controller, the constant current Laser controller is connect with the semiconductor laser array.

In the utility model optional embodiment, the condenser lens is free form surface moulded lens.

In the utility model optional embodiment, the fluorescence conversion device includes optical filter and fluorophor, described Focus on light beam is incident to the fluorophor by the optical filter, so that the fluorophor be excited to generate excitation beam.

In the utility model optional embodiment, the fluorophor is rare earth doping transparent heat conductive silica gel.

In the utility model optional embodiment, the wavelength of the excitation beam is 560-590 nanometers.

In the utility model optional embodiment, the beam shaping is flat top beam reshaper.

In the utility model optional embodiment, the flat top beam reshaper is made of diffraction optical element array.

The beneficial effect of the utility model embodiment is:

The utility model embodiment provides a kind of laser conduction device, and the laser conduction device is using polygon prism to sharp The high-energy light beam that radiant generates carries out expanding amplification, while correcting polarization and the dispersion of the high-energy light beam, to obtain Beam diameter is sufficiently large, hot spot is distributed relatively uniform adjustment light beam, while using the condenser lens to the adjustment light The polarization of beam and dispersion progress second level amendment and optimization, it is more equal to be distributed by condenser lens acquisition energy, hot spot Focus on light beam even, that fluorescence conversion device can be excited to issue photic yellow light.The fluorescence conversion device can be realized colorful It shines and the accuracy controlling of chromaticity coordinates, the synthesis accuracy with raising suitable for white light beam seen in human eye improves car light Irradiation distance, make light reasonable layout.Further, the laser light source, polygon prism, the condenser lens, described The optical center of fluorescence conversion device and the beam shaping is on same straight line, makes car light more compact, is conducive to installation dimension Shield, enhances the flexibility of assembling and the repacking of the laser conduction device.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

By the way that shown in attached drawing, the above and other purpose, feature and advantage of the utility model will be more clear, all attached Identical appended drawing reference indicates identical part in figure, does not deliberately draw attached drawing by actual size equal proportion scaling, with emphasis on In the purport for showing the utility model.

Fig. 1 is a kind of assembling structure schematic diagram for laser conduction device that the utility model first embodiment provides；

Fig. 2 is that a kind of optical path for laser conduction device that the utility model first embodiment provides conducts schematic diagram；

Fig. 3 is a kind of module diagram for fluorescence conversion device that the utility model first embodiment provides；

Fig. 4 is the connection signal of a kind of constant current laser controller and laser light source that the utility model second embodiment provides Figure.

Icon: 10- laser conduction device；11- laser light source；12- polygon prism；13- condenser lens；14- fluorescence converting means It sets；15- beam shaping；20- constant current laser conduction device；21- constant current laser controller.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.This Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.

In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical" It is complete horizontal, but can be slightly tilted.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Other feature and advantage of the utility model will illustrate in subsequent specification, also, partly from specification It becomes apparent, or is understood and implementing the utility model embodiment.The purpose of this utility model and other advantages can It is achieved and obtained by structure specifically indicated in the written description, claims, and drawings.

Through the applicant the study found that the laser headlight of existing automobile be often full-sized car manufacturer in automobile manufacture and What vehicle fitted together, while existing laser integrates the optical path complexity of headlight, bending causes laser to integrate headlight entirety ruler Very little larger, repacking flexibility, assembly simplification are poor, installation maintenance higher cost.To solve the above-mentioned problems, the utility model Embodiment provides a kind of laser conduction device 10.

First embodiment

Fig. 1 and Fig. 2 are please referred to, Fig. 1 is a kind of assembly for laser conduction device that the utility model first embodiment provides Structural schematic diagram, Fig. 2 are that a kind of optical path for laser conduction device that the utility model first embodiment provides conducts schematic diagram.

Laser conduction device 10 includes laser light source 11, polygon prism 12, condenser lens 13, fluorescence conversion device 14 and light beam Reshaper 15.

As an implementation, laser light source 11, polygon prism 12, condenser lens 13, fluorescence conversion device 14 and light are included 15 optical center of beam reshaper on the same line, with simplify laser conduction device 10 structure, reduce laser conduction device 10 body Product.

Laser light source 11 is the electric light source to be shone under stimulated radiation effect using excited state particle, for generating high-energy Laser beam.Common laser light source can be divided into Solid State Laser source (crystal and neodymium glass by its operation material (also referred to as activated material) Glass), gas laser source (including atom, ion, molecule, quasi-molecule), liquid laser source (including organic dyestuff, inorganic liquid, chela Close object) and four seed type of semiconductor laser light source.

Optionally, the present embodiment uses semiconductor laser light source, and the semiconductor laser light source passes through semiconductor laser array Generate laser beam.Semiconductor laser is also known as laser diode, is to use semiconductor material as the laser of operation material, it It is small in size, the service life is long, and it is simultaneous with integrated circuit to pump its operating voltage and electric current that the mode of simple Injection Current can be used Hold, thus can single-chip integration therewith, and current-modulation can also be directly carried out with the up to frequency of GHz to obtain High Speed Modulation Laser output.

In view of the colour temperature of blue laser beams is lower, low energy consumption for laser, brightness decay is low, therefore the utility model is sharp The blue laser beams that the High energy laser beam that radiant 11 issues is wavelength 400-450 nanometers.Optionally, institute in the present embodiment The wavelength for stating blue laser beams is 450 nanometers, meanwhile, the blue laser beams are 0.55 degree in the divergence of X-axis, described Blue laser beams are 0.8 degree in the divergence of Y-axis, to minimize energy of the blue laser beams in communication process Loss.

The blue laser beams that laser light source 11 issues are incident to polygon prism 12, the energy of the blue laser beams Relative distribution carries out multi-angle transmitting to the blue laser beams by polygon prism 12 and is adjusted to required direction and photochromic, and will The adjustment homogenizer of acquisition emits to condenser lens 13, makes that the blue laser beams are changed into polarization and chromatic dispersion problem obtains To the focus on light beam advanced optimized.Wherein, polygon prism 12 is the section that is made by transparent material optical instrument triangular in shape, Also " prism " is made optically to be called prism with the transparent body that cross section is triangle, the prism of optically denser medium is placed on optically thinner medium In (usually in air), be incident on the light of prism side after refraction by prism to prism bases deviation, to carry out light beam Expand and integrate.Optionally, polygon prism 12 can be four prismatic expanders of De-dispersion, and polygon prism beam expander has adjustment side Just, the advantages that compact-sized and cheap, and it is lost lower, and De-dispersion prismatic expanders are in addition to having the above advantages, Also have the characteristics that radiating exit direction to different wave length keeps constant, is that the process control tuning of laser conduction device 10 swashs Optical wavelength and the adjustment of subsequent light beam bring great convenience.

Condenser lens 13 will be focused from the incident adjustment light beam of polygon prism 12 and the amendment and optimization of the second level, into One step controls its polarization and dispersion, and enhances the energy uniformity coefficient of blue laser in the adjustment light beam.Condenser lens 13 belongs to In gradient-index lens, focused with end face and the characteristic being imaged and its with columned sShape features, thus can be with Applied in a variety of different micro-optics systems.There are five types of fundamental types for common condenser lens: i.e. plano-convex, positive bumps, non- Spherical surface, diffraction and mirror lens.Optionally, the condenser lens 13 that laser conduction device 10 uses in the present embodiment is aspherical Free form surface moulded lens in mirror type.Wherein, the free form surface moulded lens is made of glass molding processing technology, institute Stating glass molding has the advantages such as high consistency, high-precision, high efficiency, low price compared with traditional cold production, and can To realize the processing of Complex Different Shape curved surface.And the free form surface moulded lens is equivalent to the combination of multi-disc spherical surface, relative to double It closes and triplet performance greatly improves, realize required function using single non-spherical lens, without using poly-lens system, It is more compact and secured to allow to design, further reduce the element complexity and equipment volume of laser conduction device 10.

Referring to FIG. 3, Fig. 3 is a kind of module signal for fluorescence conversion device that the utility model first embodiment provides Figure.

Fluorescence conversion device 14 includes fluorophor, and the fluorophor generates exciting light by incident focus on light beam excitation Beam, the excitation beam and the focus on light beam are mixed to form that human eye is visible, white light beam suitable for illumination.The fluorophor For that can absorb energy, and by the part energy of the absorption 1 microsecond or in the shorter time in the object of transmitting light radiation Matter.Optionally, the fluorophor in the present embodiment is rare earth doping transparent heat conductive silica gel, and rare earth ion has energy level abundant With 4f electron transition characteristic, so as to be used for illumination field, while the rare earth doping transparent heat conductive silica gel has luminous spectrum With the advantages that narrow, excitation purity is higher, be resistant to high temperature, physical property and chemical property are stablized.Therefore the institute in the present embodiment Rare earth doping transparent heat conductive silica gel is stated using rare earth ion level structure abundant and rare earth ion crystalline field environment conditioning, is realized Multicolour shines and the accuracy controlling of chromaticity coordinates, so that the excitation beam of blue excites the rare earth doping transparent thermal conductive silicon Glue generates photic yellow light, and the excitation beam and the photic yellow light are complex as that human eye is visible, white light beam suitable for illumination.

Optionally, fluorescence conversion device 14 further includes optical filter, and the optical filter carrys out the transmitting of condenser lens 13 The focus on light beam emits after being filtered to the fluorophor.Wherein, the optical filter is optical spatial filter, is made With to carry out interference synthesis after carrying out diffraction frequency dividing to light beam, diffraction spot is accepted or rejected with various gratings, reaches frequency dividing filter The purpose of wave.

Optionally, the excitation beam that the fluorophor is generated after focus on light beam excitation is photic yellow light, the light The wavelength for causing yellow light is 560-590 nanometers.

Fluorescence conversion device 14 emits the white light beam to beam shaping 15, and beam shaping 15 is used for will be described White light beam uniformly projects after being adjusted to default hot spot.Wherein, beam shaping 15 is also known as laser shaping device, is common whole Shape lens, effect are that obtain high uniformity, boundary precipitous, while having the flat-top hot spot of specific shape.Optionally, the light Spot can be square, round, triangle or other shapes, and the shapes and sizes of the hot spot can root in various embodiments Selection adjustment is carried out according to the specific requirements of laser conduction device 10.

Optionally, beam shaping 15 can be flat top beam reshaper, and the flat top beam reshaper can be by Gauss Incident light becomes the flat top beam of even intensity, has very sharp keen edge, can be round or rectangular.

Further, the flat top beam reshaper can be made of diffraction optical element array, the diffraction optics member The characteristics of part is then that can accurately be controlled while keeping compared with high-diffraction efficiency light distribution, therefore diffraction optics is first Part becomes the ideal element for realizing off-axis illumination, and the light distribution that can be further improved 10 emergent light of laser conduction device is uniform Property, to become the ideal illuminating bundle of vehicle laser headlight.

As an alternative embodiment, laser light source 11, polygon prism 12, condenser lens in the embodiment of the present invention 13, the arrangement position of fluorescence conversion device 14 and beam shaping 15 can also be other sequences, such as: laser light source 11 exports Light beam injected after condenser lens 13 polygon prism 12 carry out light beam adjustment, using light beam adjusted inject fluorescence conversion Device 14 is converted to white light beam, uniformly projects after being adjusted to default hot spot to white light beam finally by beam shaping 15.

Second embodiment

The utility model second embodiment provides a kind of constant current laser conduction device 20, constant current laser conduction device 20 with The difference for the laser conduction device 10 that the utility model first embodiment provides is, in order to fragile semiconductor laser battle array Column are protected, and avoid voltage fluctuation and temperature change from damaging the semiconductor laser array, the constant current laser Conduction device 20 further includes the constant current laser controller 21 connecting with laser light source 11.

Referring to FIG. 4, Fig. 4 is a kind of constant current laser controller and laser light source that the utility model second embodiment provides Connection schematic diagram.

Constant current laser controller 21 is connect with laser light source 11, and power supply is right under the regulation of constant current laser controller 21 Laser light source 11 is powered.Optionally, the constant current laser controller 21 in the present embodiment can be TLS250MA103 model Constant current laser controller does not need cooling fin heat dissipation in the case where controller maximum diffipation power is less than 1W, and controller has Temperature compensation network, when controller temperature increases, output electric current is also able to maintain stabilization.Constant current laser controller 21 in order to prevent Temperature be more than to subscribe the limit, cause to overheat and damage, once temperature more than preset temperature (such as 120 degrees Celsius), constant current laser Controller 21 will turn off.

In conclusion the utility model embodiment provides a kind of laser conduction device, the laser conduction device includes Laser light source, polygon prism, condenser lens, fluorescence conversion device and beam shaping, the laser light source, the polygon prism, The optical center of the condenser lens, the fluorescence conversion device and the beam shaping is on same straight line.The laser light The light beam of source output is incident on the condenser lens after the multi-angle remission of the polygon prism, and the condenser lens will be polygonal The adjustment light beam focusing that degree reflection obtains is incident on the fluorescence conversion device to excite the fluorescence conversion device to generate and swash Shine beam, the excitation beam with white light beam, the white light beam be mixed by the focus on light beam of the condenser lens incidence It is incident to the beam shaping, the beam shaping is uniformly penetrated after the white light beam shaping is adjusted to default hot spot Out.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of laser conduction device, which is characterized in that the laser conduction device includes laser light source, polygon prism, focuses thoroughly Mirror, fluorescence conversion device and beam shaping, the laser light source, the polygon prism, the condenser lens, fluorescence conversion The optical center of device and the beam shaping is on same straight line；

The light beam of the laser light source output is incident on the condenser lens after the multi-angle remission of the polygon prism, described The adjustment light beam focusing that multi-angle remission obtains is incident on the fluorescence conversion device to excite the fluorescence by condenser lens Conversion equipment generates excitation beam, the excitation beam with white light is mixed by the focus on light beam of the condenser lens incidence Beam, the white light beam are incident to the beam shaping, and the white light beam shaping is adjusted to pre- by the beam shaping If uniformly being projected after hot spot.

2. laser conduction device according to claim 1, which is characterized in that the laser light source includes semiconductor laser Array.

3. laser conduction device according to claim 2, which is characterized in that the semiconductor laser array issues wavelength 400-450 nanometers of superlaser.

4. the laser conduction device according to any one of claim 2-3, which is characterized in that the laser light source further includes Constant current laser controller, the constant current laser controller are connect with the semiconductor laser array.

5. laser conduction device according to claim 1, which is characterized in that the condenser lens is that free form surface molding is saturating Mirror.

6. laser conduction device according to claim 1, which is characterized in that the fluorescence conversion device includes optical filter And fluorophor, the focus on light beam are incident to the fluorophor by the optical filter, so that the fluorophor be excited to generate Excitation beam.

7. laser conduction device according to claim 6, which is characterized in that the fluorophor is that rare earth doping transparent is thermally conductive Silica gel.

8. laser conduction device according to claim 6, which is characterized in that the wavelength of the excitation beam is 560-590 Nanometer.

9. laser conduction device according to claim 1, which is characterized in that the beam shaping is flat top beam shaping Device.

10. laser conduction device according to claim 9, which is characterized in that the flat top beam reshaper is by diffraction light Learn element arrays composition.