CN205880482U

CN205880482U - Illuminator and relevant projecting system and lighting system

Info

Publication number: CN205880482U
Application number: CN201620281297.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Blue Lake Lighting Technology Co Ltd
Current assignee: Shanghai Blue Lake Lighting Technology Co Ltd
Priority date: 2016-04-06
Filing date: 2016-04-06
Publication date: 2017-01-11
Anticipated expiration: 2026-04-06

Abstract

The embodiment of the utility model discloses illuminator and relevant projecting system and lighting system. Illuminator includes first laser instrument, collimating element, first lens and scatter device, first laser instrument is used for outgoing laser to collimating element, and collimating element is used for this laser of collimation, first lens include first region and second district, the photic area of first region be lighter than the second district the photic area 12, the focus in this second district of the focal distance ratio of this first region is short, comes from laser entry to this first region of collimating element, this first region is used for this laser focusing to scatter device, it is the scattered light that scatter device is used for laser scattering to first region and second district with its emergent light reflection to first lens, first lens still are used for collecting the scatter device's on it that incides emergent light and outgoing. The embodiment of the utility model provides a has the less advantage of volume.

Description

Light-emitting device and relevant projecting system and illuminator

Technical field

This utility model relates to illumination and Display Technique field, particularly relates to a kind of light-emitting device and relevant projecting system With illuminator.

Background technology

At present, LASER Excited Fluorescence powder is widely used to illumination and Display Technique with the technology of outgoing colourama or white light Field.

Fig. 1 is the structural representation of a kind of light-emitting device in prior art.As it is shown in figure 1, light-emitting device 10 includes laser Device 11, collimating lens 12, reflecting mirror 13, light splitting optical filter 14, lens 15, lens 16, yellow fluorescent powder sheet 17.Laser instrument 11 goes out The blue laser penetrated, after collimating lens 12 collimates, reflexes to light splitting optical filter 14 through reflecting mirror 13.Light splitting optical filter 14 Having the attribute of reflection blue light transmission gold-tinted, blue laser, after the reflection of light splitting optical filter 14, is incident in lens 15 He successively 16, and it is shown in dotted line to focus on phosphor sheet 17(light after lens 15 and 16).Yellow fluorescent powder sheet 17 absorbs at least Part blue laser and produce gold-tinted, this gold-tinted is reflexed to lens 16 by reflection substrate, and is collected by lens 16 successively, and by thoroughly Mirror 15 collimates outgoing (light such as band arrow shown in solid).

Owing to the luminescence of material for transformation of wave length is lambertian distribution, the light of this wide-angle distribution wants to collect, past Toward needing to realize high efficiency collection and collimation through at least two lens.Light-emitting device 10 is i.e. by lens 16 and lens 15 complete two effects jointly, and one is by parallel laser focusing to phosphor sheet 17, and one is to phosphor sheet 17 The light gone out is collected and is collimated into directional light.Lens 16 bore is less and distance luminous point (phosphor sheet) is close, the light of wide-angle After (all light within such as 70 degree) are incident in lens 16, angle is zoomed in, and is entered after being then incident in bigbore lens 15 The collimation of one step.

But, it being limited to etendue amount conservation law, the collimation of the collimated beam of lens 15 outgoing is the highest (i.e. to be dissipated Angle is the least), it is desirable to the bore of lens 15 is the biggest (because the sinusoidal product of bore and the angle of divergence is constant, i.e. an optics Propagation conservation).And laser optical path needs to walk around the edge of lens 15 and incident from the top of lens 15, therefore lens 15 Bore is the biggest, and the light path of laser is the longest, and the position placing laser is the most remote, and whole system volume is the hugest.

Summary of the invention

This utility model is mainly solving the technical problems that provide light-emitting device and the dependent projections system of a kind of small volume System and illuminator.

This utility model embodiment provides a kind of light-emitting device, including the first laser instrument, collimating element, the first lens with scattered Injection device；First laser instrument is for shoot laser to collimating element, and collimating element is used for collimating this laser；First lens include One district and the secondth district, the light-receiving area in the firstth district less than the secondth district light-receiving area 1/2, the focal distance ratio in this firstth district this second The focal length in district is short, from the laser light incident of collimating element to this firstth district, this firstth district for by this laser focusing to scattering dress Put；It is scattered light that scattering device is used for laser light scattering, and its emergent light reflexes to the firstth district and secondth district of the first lens； First lens are additionally operable to collect emergent light the outgoing of scattering device incident thereon.

Alternatively, light-emitting device also includes light-operated product, the biggest portion of emergent light of the scattering device that the first lens are collected Separating and be incident upon this light-operated product, this light-operated product is used for controlling this emergent light and realizes the distribution of specific light.

Alternatively, light-emitting device also includes light guiding piece, and the laser for auto-collimation element in the future guides along the first light path To the firstth district of the first lens, at least most of of the emergent light of the scattering device collected by the first lens guides along the second light path To light-operated product.

Alternatively, light guiding piece includes the firstth district and the secondth district, and the light-receiving area in this firstth district is less than the light in the secondth district The 1/2 of area, this firstth district guides the firstth district to the first lens for the laser of auto-collimation element in the future along the first light path, should The emergent light of secondth district scattering device for being collected in first lens the secondth district guides to light-operated product along the second light path；Light draws Firstth district of guiding element is the first reflecting mirror, and the secondth district is the light transmission medium of the first mirror environment；Or, the first of light guiding piece District is loophole, and the secondth district is the reflecting mirror around loophole.

Alternatively, the firstth district of light guiding piece is loophole, and the secondth district is the reflecting mirror around loophole, and this reflecting mirror For reflecting curved surface；Light guiding piece is also light-operated product.

Alternatively, for the first lens are compared to planoconvex lens, bottom surface is plane or concave surface, and upper surface has projection, and this is convex Play the lower part with projection and constitute the firstth district of the first lens.

Alternatively, light-emitting device also includes second laser and corresponding collimating element, the laser of the first laser emitting After the laser of second laser outgoing respectively collimated element collimation, it is combined into beam of laser and is incident to the first of the first lens District；Scattering device is additionally operable to scatter the laser from second laser.

Alternatively, light-emitting device also includes that focussing mechanism, the first lens are fixed on this focussing mechanism, and this focussing mechanism is used In regulation from the distance of the first lens to scattering device.

This utility model embodiment also provides for a kind of optical projection system, including any of the above-described light-emitting device.

This utility model embodiment also provides for a kind of illuminator, including any of the above-described light-emitting device.

Compared with prior art, this utility model embodiment includes following beneficial effect:

This utility model embodiment by being divided into the firstth district and focal length that focal length is shorter, light-receiving area is less by the first lens The secondth district that longer, light-receiving area is bigger, makes exciting light focus to scattering device not only by the firstth district that focal length is shorter, and And most of emergent light of scattering device can collect in the secondth district longer by focal length, that light-receiving area is bigger, therefore the first lens Most of emergent light of the scattering device of outgoing will not straighten such that it is able to big the asking of system bulk in real solution prior art Topic.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of light-emitting device in prior art；

Fig. 2 a is the structural representation of an embodiment of light-emitting device in this utility model embodiment；

Fig. 2 b is the structural representation of the first lens in Fig. 2 a illustrated embodiment；

Fig. 3 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Fig. 4 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Fig. 5 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Fig. 6 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Fig. 7 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Fig. 8 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Fig. 9 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Figure 10 is the structural representation of the first lens of another embodiment of light-emitting device in this utility model embodiment；

Figure 11 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Figure 12 is the structural representation of focussing mechanism in another embodiment of light-emitting device in this utility model embodiment；

Figure 13 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Figure 14 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Figure 15 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Figure 16 a is the structural representation of another embodiment of light-emitting device in this utility model embodiment；

Figure 16 b is the light-dividing device optical filtering curve of spectrum schematic diagram to incident P polarization light with S-polarization light；

Figure 16 c is the light-dividing device optical filtering curve of spectrum schematic diagram to incident different wavelengths of light.

Detailed description of the invention

For the sake of quoting and understanding, being described as follows of the technical term hereafter and used in accompanying drawing:

Material for transformation of wave length: material for transformation of wave length can use phosphorescent material, such as phosphor, it would however also be possible to employ nanometer Material, such as quantum dot, it is also possible to use fluorescent material.

Exciting light: can excitation wavelength transition material so that material for transformation of wave length produces the light of different wavelengths of light.

Stimulated Light: the light that material for transformation of wave length stimulated luminescence excites and produces.

Exciting light, material for transformation of wave length, Stimulated Light are relative concepts.Such as, blue light excites yellow fluorescent powder to produce Huang Light, now blue light is exciting light, and gold-tinted is Stimulated Light.And gold-tinted excitated red fluorescent powder produces HONGGUANG, now gold-tinted is to excite Light, HONGGUANG is Stimulated Light.

With embodiment, this utility model embodiment is described in detail below in conjunction with the accompanying drawings.

In order to solve the problems of the prior art, this utility model people initially considers directly to be moved down with 14 by reflecting mirror 13, And reflecting mirror 14 is moved down between lens 15 and lens 16, i.e. the laser of reflecting mirror 14 reflection is only incident in glimmering by lens 16 Light powder sheet, so i.e. so that the first laser instrument need not be arranged on the periphery of lens 15, and can be arranged on lens 15 with saturating Between mirror 16 so that compact conformation, volume reduce.

But, laser only cannot focus on phosphor sheet 17 by lens 16, to those skilled in the art, swashs Light can not focus on and have no relations on phosphor sheet 17, as long as can fully converge on phosphor sheet.In order to realize fully converging Poly or poly Jiao, the curvature of lens 16 design must become greatly (curvature conference strengthens convergence).Owing to light path is reversible, phosphor sheet outgoing Fluorescence can be relatively more straight after curvature becomes big lens 16, the straight fluorescence of comparison from lens 16 outgoing needs through long Distance be diffused into lens 15, finally could be collimated outgoing by lens 15, thus result in system from lens 16 to lens 15 this Length on individual direction, volume becomes big, the most really solves the problem that in prior art, system bulk is big.To this end, This utility model people proposes this utility model embodiment and solves bulky problem veritably.

Embodiment one

Refer to the structural representation that Fig. 2 a, Fig. 2 a is an embodiment of light-emitting device in this utility model embodiment； Fig. 2 b is the structural representation of the first lens in Fig. 2 a illustrated embodiment.As shown in Figure 2 a, light-emitting device 100 includes the first laser Device 110, collimating lens the 120, second reflecting mirror the 130, first reflecting mirror the 140, first lens 150, Wavelength converter 160, Two lens 170.

First laser instrument 110 is used for outgoing exciting light (such as blue light) to collimating lens 120.Collimating lens 120 is for standard This exciting light straight is directional light, and outgoing is to the second reflecting mirror 130.Second reflecting mirror 130 reflects the exciting light of this collimation to light Guiding piece 140.Light guiding piece 140 is for by from the exciting light of the second reflecting mirror 130 along the first light path (band arrow dotted line institute Show) guide the first district 151 to the first lens 150.

As shown in Figure 2 b, the first lens 150 include the first 151(unshaded area, district) and the second 152(shadow region, district).This reality Executing in example, for the first lens 150 are compared to planoconvex lens (collecting lens 16 the most of the prior art), upper face center has Projection, this projection constitutes the first district 151 with protruding lower part (dotted line area encompassed)；I.e. relative in prior art Lens 16, the upper surface curvature in the first district 151 of the first lens 150 becomes big, and the upper surface curvature in the second district 152 is constant. First lens 150 can directly process (molding processing), it would however also be possible to employ the mode that small one and large one two lens are glued.

Firstth district of the first lens is for focusing to Wavelength converter 160 by the exciting light of collimation.It is understood that " focusing " in this utility model embodiment is not limited in focus and falls on phosphor sheet, and focus relative fluorescence powder sheet is the most slightly Latter point, as long as those skilled in the art's acceptable enough converges.

Wavelength converter 160 includes material for transformation of wave length, for by the whole wavelength of exciting light from the first lens 150 Be converted to Stimulated Light, and its emergent light, i.e. this Stimulated Light are reflexed to the first district 151 and the second district 152 of the first lens.At this In utility model, Wavelength converter 160 is reflective, can include reflective and the wavelength arranged on reflective substrates Conversion sheet (such as yellow fluorescent powder sheet), the Stimulated Light that wavelength conversion sheet produces is reflexed to the first lens by reflective.

The light-receiving area in the firstth district of the first lens is less than the 1/2 of the light-receiving area in the secondth district.First lens the firstth district Light-receiving area refers to the surface area in the firstth district covered when the emergent light of Wavelength converter is incident on this firstth district, and first The light-receiving area in lens the secondth district refers to the secondth district covered when the emergent light of Wavelength converter is incident on this secondth district Surface area.The emergent light of Wavelength converter 160 is incident to the firstth district and secondth district of the first lens 150, owing to wavelength turns The emergent light of changing device 160 is Lambert cosine distribution, i.e. wide-angle distribution, and the light-receiving area in the first district 151 of the first lens Less than the 1/2 of the light-receiving area in the second district 152, therefore to be incident to first saturating for the emergent light small portion of Wavelength converter 160 First district 151 of mirror, major part is incident to the second district 152 of the first lens.First lens 150 are additionally operable to collect incident thereon The emergent light of Wavelength converter 160 and outgoing to light guiding piece 140, this emergent light dispersion angle after the first lens is received Little.

Light guiding piece 140 is additionally operable to the emergent light of the Wavelength converter collected by the first lens, and i.e. Stimulated Light is along second Light path (band arrow shown in solid) guides to the second lens 170.In the present embodiment, light guiding piece 140 is light splitting optical filter, tool There is the attribute of reflected excitation light transmission Stimulated Light, for the whole exciting lights from the second reflecting mirror 130 are anti-along the first light path It is incident upon the firstth district of the first lens 150, whole Stimulated Light that the first lens are collected are transmitted through the second lens along the second light path 170.Certainly, exciting light major part can also be reflected by light splitting optical filter, to Stimulated Light major part transmission.

Second lens 170 are designed for the emergent light from first lens the secondth district is collimated outgoing.Therefore, draw from light After guiding element 140 receives light, for the emergent light from first lens the secondth district 152, the second lens 170 are collimated into directional light. I.e. it is incident to the emergent light in first lens the secondth district for Wavelength converter, is total to by the first lens 150 and the second lens 170 With completing collection and being collimated into directional light.And it is incident to the outgoing of the Wavelength converter 160 in the first district 151 of the first lens Light, owing to light path is reversible, can be become collimation by first lens the firstth district 151 is directional light, so meeting after the second lens 170 Dissipating, and can not be collimated by the second lens 170, although this part light is not carried out the collimating effect of design, but light energy accounts for The ratio of total light energy is relatively low, and being therefore not carried out collimating effect is acceptable.Certainly, set to reduce this not meeting The loss of meter, the firstth district of the first lens should be the least, as long as be enough to receive the exciting light of self-focus lens.Therefore, Preferably, the light-receiving area in the firstth district of the first lens less than the secondth district light-receiving area 1/4.

Relative to prior art, light guiding piece is arranged between the first lens and the second lens by the present embodiment so that the One laser instrument need not be arranged on the periphery of the second lens, and can be arranged between the second lens and the first lens, and structure is more Compact.Further, the present embodiment utilizes the etendue amount of incident laser to expand much smaller than the optics of the emergent light of Wavelength converter The feature of exhibition amount, on the first lens, independent design area is less, upper surface curvature becomes the firstth big district and receives laser, and makes Laser focusing is on Wavelength converter, and on the first lens, design area is received compared with the secondth district big, that upper surface curvature is constant Most of emergent light of collection Wavelength converter, therefore this major part emergent light will not no-load voltage ratio more straight so that the first lens to the Distance between two lens is not required to lengthen, and the second lens just can make most of emergent light collimation outgoing of Wavelength converter.

The present embodiment by being divided into focal length is shorter, light-receiving area is less the firstth district and focal length is longer, be subject to by the first lens The secondth district that light area is bigger, makes exciting light focus to Wavelength converter not only by the firstth district that focal length is shorter, and Most of emergent light of Wavelength converter can be collected in the secondth district longer by focal length, that light-receiving area is bigger, and therefore first is saturating Most of emergent light of the Wavelength converter of mirror outgoing will not straighten such that it is able to system bulk in real solution prior art Big problem.Further, direct first reflecting mirror is arranged between two lens compared to what this utility model people initially considered First lens do not carry out the scheme (abbreviation initial scheme) of subregion, and this utility model people has carried out many experiments contrast, finds The spot size that the present embodiment focuses to Wavelength converter is more much smaller than the spot size of initial scheme.

Herein it should be noted that laser alignment is directional light, the second lens 170 by collimating lens described above 120 Collimating the light from first lens the secondth district 152 for directional light is a citing.If it is true that the second lens 170 energy The dispersion angle of the light from first lens the secondth district 152 is reduced, it is not required that the outgoing after the reduction of this dispersion angle Just directional light.Similarly, as long as collimating lens 120 can reduce the dispersion angle of the exciting light of the first laser emitting, The emergent light being not required for collimating lens is directional light.Additionally, collimating lens 120 can be non-spherical lens, cylindrical mirror, arc Reflecting mirror or other collimating element.

In the present embodiment, the second reflecting mirror 130 is arranged on the top of collimating lens 120, the in the future laser of self-focus lens Bend 90 degree to light guiding piece 140.In other embodiments, the second reflecting mirror 130 can also omit, as long as adjusting the first laser The putting position of device 110 and collimating lens 120 and angle so that the laser straight of collimating lens outgoing connects incident illumination guiding piece 140 ?.

In other embodiments, light guiding piece 140 can also be the light splitting with transmission exciting light reflection Stimulated Light attribute Optical filter, the exciting light for self-focus lens in the future is transmitted through the firstth district of the first lens along the first light path, by the first lens The Stimulated Light collected reflexes to the second lens along the second light path.Certainly, light splitting optical filter can also to exciting light major part transmission, Stimulated Light major part is reflected.

Additionally, in other embodiments, Wavelength converter can use LED as substrate, and material for transformation of wave length is (as glimmering Light powder) it is arranged in the light-emitting area of LED in modes such as coating or pad pastings.Such as, when using blue led as Wavelength converter Substrate time, the one side of material for transformation of wave length is by the exciting of laser from the first lens, and another side is swashed by this blue led Sending out, i.e. material for transformation of wave length is two-sided is excited simultaneously, thus can improve the emergent light brightness of light-emitting device.For another example, use is worked as When red LED is as the substrate of Wavelength converter, although material for transformation of wave length will not be excited by this red LED, but red Outgoing together with the Stimulated Light that the HONGGUANG of LED outgoing can produce with material for transformation of wave length, thus increase HONGGUANG light for light-emitting device The energy of spectrum, compensate for the defect that the red energy of Stimulated Light is not enough；This time guiding piece 140 is preferably reflected excitation light and thoroughly Penetrate the light splitting optical filter of Stimulated Light and HONGGUANG.

Complicated, therefore to make up the redness energy of Stimulated Light owing to arranging the technics comparing of material for transformation of wave length on LED The defect that amount is not enough, light-emitting device can also include the second laser of outgoing the second laser and corresponding collimating lens.First After the laser of the exciting light of laser emitting and second laser outgoing collimated collimated respectively, being combined into beam of laser (can Light is closed, it is also possible to close light by light splitting optical filter with outgoing side by side), another through the first of incident first lens of light guiding piece District.And Wavelength converter is additionally operable to scatter the second laser from second laser so that Wavelength converter outgoing is excited Outside light, the second laser that also outgoing has been scattered by material for transformation of wave length.Now, light guiding piece 140 is permissible for the second laser It is partially reflective fractional transmission, so that having the part light can be through light guiding piece outgoing from the second laser of Wavelength converter To the second lens.Second laser can be red laser or green laser, can be so that light-emitting device increases HONGGUANG Or the energy of green spectrum.Second laser can also be infrared laser, can be so that light-emitting device increases infrared spectrum Energy, in order to user can find this light-emitting device by infrared detector at night.

Embodiment two

Referring to Fig. 3, Fig. 3 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.As Shown in Fig. 3, light-emitting device 200 includes the first laser instrument 210, collimating lens the 220, second reflecting mirror the 230, first lens 250, ripple Long conversion equipment the 260, second lens 270.

The present embodiment is in place of the difference of embodiment one:

(1) in the present embodiment, light guiding piece 240 includes the firstth district and the secondth district, and the firstth district is the first reflecting mirror, second District is the air of the first mirror environment；Further, the light-receiving area in light guiding piece the firstth district is less than the light-receiving area in the secondth district 1/2.Specifically, the first reflecting mirror of light guiding piece 240 reflects along the first light path for the exciting light of self-focus lens 220 in the future To the first district 251 of the first lens 250, the air of the first mirror environment is for the wavelength convert collected by the first lens 250 The major part of the emergent light of device, the emergent light of the Wavelength converter that the secondth district of the i.e. first lens 250 collects is along the second light Reuter is incident upon the second lens 270.Herein it should be noted that the first reflecting mirror herein is for swashing from the first laser instrument Just reflect, be not offered as any light is all reflected.It addition, the air of the first mirror environment can also to replace to other saturating Light medium.

(2) the exciting light part wavelength from the first lens 250 is turned by the material for transformation of wave length of Wavelength converter 260 Being changed to Stimulated Light, therefore the emergent light of Wavelength converter is the mixed light of Stimulated Light and the exciting light do not changed, such as yellow The white light that color Stimulated Light mixes with blue excitation light.The emergent light of the Wavelength converter that the secondth district of the first lens 250 collects It is transmitted through the second lens 270 through the air of the first mirror environment, and is become directional light by the second collimated.First lens 250 First district collect Wavelength converter emergent light through first reflecting mirror reflection and can not from the second lens 270 outgoing for send out The emergent light of electro-optical device, owing to this part light energy ratio is smaller, so being acceptable in some occasion, the farthest Visual field is closed.In order to reduce light loss, the area of the first reflecting mirror should be the least, as long as be enough to receive exciting of self-focus lens Light.

(3) light-emitting device 200 also includes diffusion sheet 280, for the collimation exciting light carrying out self-focus lens is scattered, and Outgoing is to the first reflecting mirror of light guiding piece 240.Diffusion sheet 280 is to make laser form a little angle of divergence, so may be used So that the laser facula homogenization focused on material for transformation of wave length, improve the efficiency of material for transformation of wave length, therefore diffusion sheet Any position in 280 light paths that can be arranged on collimating lens 220 to Wavelength converter 260, is preferably provided at collimation thoroughly In light path between mirror and the first lens.

Relative to prior art, the first reflecting mirror is arranged between the first lens and the second lens by the present embodiment so that First laser instrument need not be arranged on the periphery of the second lens, and can be arranged between the second lens and the first lens, and structure is relatively For compact.Further, the present embodiment utilizes the etendue amount optics much smaller than the emergent light of Wavelength converter of incident laser The feature of propagation, on the first lens, independent design area is less, upper surface curvature becomes the firstth big district and receives laser, and Making laser focusing on Wavelength converter, on the first lens, design area comes compared with the secondth district big, that upper surface curvature is constant Collect Wavelength converter most of emergent light, therefore this major part emergent light will not no-load voltage ratio more straight so that the first lens are extremely Distance between the second lens is not required to lengthen, and the second lens just can make most of emergent light collimation outgoing of Wavelength converter, from And can really solve the problem that system bulk in prior art is big.

In the present embodiment, the firstth district of the first lens 250 is arranged on the central authorities of the first lens, and the first reflecting mirror is arranged on The over top of one lens, incident laser is bent 90 degree of first districts 251 reflexing to the first lens by the first reflecting mirror.At it In its embodiment, the firstth district of the first lens can also be arranged on edge or other position of the first lens, the first reflecting mirror Can also be correspondingly disposed in other position, incident laser can also be bent other angle by the first reflecting mirror.

Embodiment three

Referring to Fig. 4, Fig. 4 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.As Shown in Fig. 4, light-emitting device 300 includes the first laser instrument 310, collimating lens 320, light guiding piece the 340, first lens 350, wavelength Conversion equipment the 360, second lens 370 and diffusion sheet 380.

The present embodiment is in place of the difference of embodiment two:

The present embodiment eliminates the second reflecting mirror, and changes the firstth district of the first lens and the position of the first reflecting mirror Put.Specifically, the first reflecting mirror of light guiding piece 340 is positioned close to the position at the second lens 370 edge, so that laser From the marginal incident of the first lens 350, the first district 351 also relative set of the first lens 350 is at the edge of the first lens homonymy. More specifically, for the first lens are compared to planoconvex lens, top surface edge has projection.Due to from material for transformation of wave length outgoing The light light distribution in space is substantially distributed in Lambert cosine: the light intensity at centre normal is the strongest, the local light intensity that angle is the biggest The most weak, therefore the first reflecting mirror and the first district 351 to light guiding piece 340 are arranged such, and can reduce Stimulated Light by The energy loss of one reflecting mirror reflection.

From this example, it can be seen that the first reflecting mirror can also omit, as long as adjusting the first laser instrument 310 with accurate The putting position of straight lens 320 and angle so that the laser straight of collimating lens outgoing accesses and penetrates the first lens 350.Equally, In embodiment two, the first reflecting mirror is also dispensed with, as long as being placed on collimating lens 220 by the first laser instrument 210 The surface of the first lens 250, certainly, now needs to select volume to try one's best the first little laser instrument and collimating lens, with Reduce they stops to the first lens emergent light as far as possible.

Embodiment four

Referring to Fig. 5, Fig. 5 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.As Shown in Fig. 5, light-emitting device 400 include the first laser instrument 410, collimating lens the 420, second reflecting mirror 430, light guiding piece 440, One lens 450, Wavelength converter the 460, second lens 470 and diffusion sheet 480.

The present embodiment is in place of the difference of embodiment two:

(1), in order to reduce light loss, in the present embodiment, the first reflecting mirror of light guiding piece 240 is little optical filter, and this is little Optical filter has reflected excitation light and the attribute of transmission Stimulated Light, carrys out the exciting light of self-focus lens 420 for reflection, and by the The Stimulated Light that one lens the firstth district 451 collects is transmitted through the second lens 470, the such as transmission of reflection blue exciting light along the second light path Yellow Stimulated Light.Now the Stimulated Light of the first district 451 outgoing of the first lens 450 also is able to be incident to the second lens 470.

(2) it has been directional light due to the Stimulated Light of the first district 451 outgoing of the first lens 450, so through embodiment Can dissipate after the second lens in two, and can not be by this second collimated, although this part light is not carried out the collimation of design Effect, but the ratio that light energy accounts for total light energy is relatively low, and it is permissible for being therefore not carried out collimating effect in some application scenario Accept.For this problem not meeting design, in the present embodiment, with the first lens 450 correspondingly, the second lens 470 are also Including the first district 471 and the second district 472.Little through light guiding piece 440 of the Stimulated Light of the first district 451 outgoing of the first lens 450 After optical filter, outgoing is to the first district 471 of the second lens 470, and two surfaces that the first district 471 of the second lens 470 is relative are mutual Parallel, the most specially two parallel curved surfaces so that from the first district 451 the most collimated of the first lens The direction of light will not change, and is still that directional light.The outgoing of the Wavelength converter 460 that the second district 452 of the first lens collects Light, the second district 472 of the air outgoing around little optical filter to the second lens, this is had by the second district 472 of the second lens The Stimulated Light of certain dispersion angle is collimated into parallel light emergence.

In the present embodiment, by the second lens are carried out subregion, so that the light of the secondth district outgoing of the first lens is being collimated Become while directional light, make the directional light of the firstth district outgoing of the first lens will not change direction, so that the going out of the second lens Penetrate light and be directional light, improve out light collimation.

Embodiment five

Referring to Fig. 6, Fig. 6 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.As Shown in Fig. 6, light-emitting device 500 include the first laser instrument 510, collimating lens the 520, second reflecting mirror 530, light guiding piece 540, One lens 550, Wavelength converter the 560, second lens 570 and diffusion sheet 580.

The present embodiment is in place of the difference of embodiment four:

Second lens 570 are planoconvex lens, and the upper surface in the first district 571 of the second lens is the following table with planoconvex lens The plane that face is parallel.In the present embodiment, by the second lens are carried out subregion, with at the light by the secondth district outgoing of the first lens While being collimated into directional light, make the directional light of the firstth district outgoing of the first lens will not change direction, so that the second lens Emergent light be directional light, improve out light collimation；Meanwhile, the second lens use planoconvex lens, therefore second lens Firstth district has only to do, at upper surface, the operation polished just can realize the purpose parallel with lower surface, makes relatively simple.

Although it is directional light that embodiment four and embodiment five can realize all emergent lights, but there is problems with. For convenience of description, representing the emergent light of light-emitting device with 6 band arrow solid lines in Fig. 6, from left to right numbering is followed successively by 91-96. Light 91,92 is the light of the second district 572 outgoing through the second lens 570, and wherein light 92 is near the first district 571 and second The border in district 572；Light 93 and 94 is the light of the first district 571 outgoing through the second lens 570, and wherein light 93 is near The left margin in one district 571, light 94 is near the right margin in the first district 571.Observing 92 and 93 two light, two light are the most close Firstth district and the intersection in the secondth district, but light 92 is after the secondth district outgoing of the first lens 550, and the angle of divergence of light 92 is more than From the angle of divergence of the light 93 of the firstth district outgoing of the first lens 550 (this is because light 93 is by the first of the first lens District is entirely collimated), after therefore these two light arrive the second lens 570 after one section of propagation distance, just have one intersegmental Away from.After the second lens 570, light 92 is collimated, the outgoing parallel with light 93, but spacing between the two is still deposited ?.So considering that system is axisymmetric, the hot spot of outgoing will form Crape ring, the most just in the position between these two light It is that this position does not has light outgoing, the light in the firstth district and the secondth district all not to have.In order to solve this problem, this utility model is implemented Example proposes embodiment six.

Embodiment six

Referring to Fig. 7, Fig. 7 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.As Shown in Fig. 7, light-emitting device 600 include the first laser instrument 610, collimating lens the 620, second reflecting mirror 630, light guiding piece 640, One lens 650, Wavelength converter the 660, second lens 670 and diffusion sheet 680.

The present embodiment is in place of the difference of embodiment five:

Relative two surface in the firstth district of the second lens 670 is the most parallel, but two confocal curved surfaces, and this two In individual confocal curved surface, the area of light path rear end surface 671a is more than the area of end curved surface 671b before light path, and therefore the two is bent Face constitutes beam-expanding system.

In Fig. 7,4 band arrow solid lines represent the emergent light of light-emitting device, and from left to right numbering is followed successively by 91-94.Light 91,92,94 is the light of the secondth district outgoing through the second lens 670, and wherein light 92 is near the limit in the firstth district Yu the secondth district Boundary；Light 93 is the light of the firstth district outgoing through the second lens 670, and near the left margin in the firstth district.Light 93 is successively End curved surface 671b and light path rear end surface 671a before light path, light collimation promotes (angle of divergence diminishes) light beam and expands, with Light 92 border after the secondth district outgoing of the second lens 670 is made up mutually, thus avoids or weaken Crape ring phenomenon.

Embodiment seven

Referring to Fig. 8, Fig. 8 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.As Shown in Fig. 8, light-emitting device 700 include the first laser instrument 710, collimating lens the 720, second reflecting mirror 730, light guiding piece 740, One lens 750, Wavelength converter the 760, second lens 770 and diffusion sheet 780.

The present embodiment is in place of the difference of embodiment six: the first lens 750 are battery of lens, including collecting lens 750a The firstth district and the secondth district is included with lenslet 750b, this collecting lens 750a, this lenslet 750b and this collecting lens 750a's Firstth district constitutes the firstth district of the first lens 750, and secondth district of this collecting lens 750a constitutes the secondth district of the first lens 750. The combination of the present embodiment lenslet 750b and collecting lens 750a realizes the merit in the firstth district of the first lens in embodiment six Can so that lens are easier to processing.Furthermore it is possible to by glued together with lenslet 750b for collecting lens 750a, in order to fixing Lenslet 750b.

Embodiment eight

The various embodiments described above all have the first lens of projection to illustrate with upper surface, knowable to principle of the present utility model, For the secondth district of the first lens, the firstth district of the first lens needs to converge faster light, say, that at light The firstth district learning upper first lens of design is more shorter than the focal length in the secondth district.Therefore, the first lens of the present utility model are all right There is other design, as long as it is shorter than the focal length in the secondth district to realize its firstth district.For ease of understanding, this utility model is also Other design of first lens is provided.Referring to Fig. 9, Fig. 9 is another reality of light-emitting device in this utility model embodiment Execute the structural representation of example.As it is shown in figure 9, light-emitting device 800 includes that the first laser instrument 810, collimating lens 820, second reflect Mirror 830, light guiding piece the 840, first lens 850, Wavelength converter the 860, second lens 870 and diffusion sheet 880.

The present embodiment is in place of the difference of embodiment two:

For first lens 850 are compared to planoconvex lens, there are projection in lower surface central authorities, this projection and protruding upper part Constituting the first district 851, therefore the focal length in focal distance ratio secondth district in the first district 851 of the first lens is short.It is true that the present embodiment First lens are relative to planoconvex lens of the prior art, and the lower surface curvature in the firstth district of the first lens becomes big, and the secondth district Lower surface curvature constant.Identical with embodiment four, the projection of the first lens lower surface can also be arranged on edge or other Position.

The present embodiment is that the etendue amount utilizing incident laser expands much smaller than the optics of the emergent light of Wavelength converter The feature of exhibition amount, on the first lens, independent design area is less, lower surface curvature becomes the firstth big district and receives laser, and makes Laser focusing is on Wavelength converter, and on the first lens, design area is received compared with the secondth district big, that lower surface curvature is constant Collect most of emergent light of Wavelength converter, and this major part emergent light is collimated, therefore from first by the second lens Lens to the distance between the second lens depends on the secondth district of constant the first lens of curvature, rather than curvature becomes the firstth big district, Therefore this distance is not required to lengthen, and the second lens just can make most of emergent light collimation outgoing of Wavelength converter.Therefore, this reality Execute example and solve the problem that in prior art, system bulk is big veritably.Further, the present embodiment focuses to Wavelength converter Spot size is more much smaller than the spot size of initial scheme.

Embodiment nine

Refer to the knot that Figure 10, Figure 10 are the first lens of another embodiment of light-emitting device in this utility model embodiment Structure schematic diagram.As shown in Figure 10, for the first lens 950 are compared to planoconvex lens, bottom surface is concave surface, and upper face center has convex Rising, this projection and protruding lower part constitute the first district 951, and other parts are the second district 952, so that the focal length in the firstth district Shorter than the focal length in the secondth district.Owing to the emergent light of Wavelength converter is incident in the angle of incidence of concave surface relative to being incident in plane Angle of incidence is smaller, accordingly, with respect to the embodiment that bottom surface is plane of the first lens, the first lens surface in the present embodiment Fresnel loss (reflection loss) is less.Certainly, the bottom surface of the first lens be the benefit of plane be to be easily worked.

Embodiment ten

In embodiment two to embodiment nine, the exciting light distinguishing incidence the most in the following way goes out with Wavelength converter Penetrate the light path of light: the first reflecting mirror reflected excitation light to the first lens, the Wavelength converter that the secondth district of the first lens collects Emergent light be transmitted through the second lens through the air of the first mirror environment.It is understood that can also distinguish in turn, i.e. Guide exciting light to be incident to the first lens by transmission, carry out the emergent light outgoing of guide wavelength conversion equipment to by reflection Two lens.Specifically, referring to Figure 11, Figure 11 is that in this utility model embodiment, the structure of another embodiment of light-emitting device is shown It is intended to.As shown in figure 11, light-emitting device 1000 includes the first laser instrument 1010, collimating lens 1020, light guiding piece 1040, first Lens 1050, Wavelength converter the 1060, second lens 1070 and diffusion sheet 1080.

The present embodiment includes in place of the difference of embodiment two:

Firstth district of light guiding piece 1040 is loophole 1041, and the secondth district is the reflecting mirror 1042 around loophole.Printing opacity The exciting light that hole 1041 is used for self-focus lens 1020 in the future is transmitted through the first district 1051 of the first lens 1050 along the first light path, Reflecting mirror 1042 is for the major part by the emergent light of the Wavelength converter 1060 of the first lens collection, the i.e. first lens second The emergent light of the Wavelength converter that district collects reflexes to the second lens 1070 along the second light path.Herein it should be noted that this The loophole at place is to be transmission for the laser from the first laser instrument, is not offered as all transmissions of any light.

The loophole 1041 of light guiding piece 1040 is simplest is achieved in that through hole；But now, first lens 1050 The emergent light of the Wavelength converter 1060 that the first district 1051 collects can be escaped by via through holes.Damage therefore to reduce this part Losing, the firstth district of light guiding piece, i.e. loophole 1041 preferably have transmission exciting light and the little optical filtering of reflection Stimulated Light attribute Sheet, this little optical filter carrys out the exciting light of self-focus lens for transmission, is additionally operable to being subject to that the first lens 1,050 first district collects Laser reflexes to the second lens 1070 along the second light path.

Technical characteristic in the various embodiments described above and function can be applied equally in the present embodiment, such as: be same as implementing Example four and embodiment five, in the present embodiment, the second lens 1070 can also include the firstth district and the secondth district；The first of first lens The Stimulated Light of district 1051 outgoing behind the firstth district of light guiding piece, the least optical filter 1041 outgoing to the first of the second lens 1070 District, two faces in the firstth district of the second lens 1070 are parallel to each other so that from the firstth district the most collimated of the first lens Light direction will not change.The emergent light of the Wavelength converter 1060 that the secondth district of the first lens 1050 collects, from light guiding piece The secondth district, i.e. reflecting mirror 1042 outgoing is to the secondth district of the second lens 1070, and by the secondth district collimation outgoing of the second lens.

For another example, be same as embodiment six and embodiment seven, in the present embodiment, the second lens 1070 can also include the firstth district with Secondth district；The Stimulated Light of the first district 1051 outgoing of the first lens 1050 is through the firstth district of light guiding piece, the least optical filter 1041 Rear outgoing is to the firstth district of the second lens 1070, and two surfaces that the firstth district of the second lens is relative are two confocal curved surfaces, And the area of light path rear end surface is more than the area of end curved surface before light path, therefore two curved surfaces constitute beam-expanding system.First is saturating The emergent light of the Wavelength converter that the secondth district of mirror 1050 collects, from the secondth district of light guiding piece, i.e. reflecting mirror 1042 outgoing To the secondth district of the second lens 1070, and by the secondth district collimation outgoing of the second lens.

Light guiding piece in the present embodiment may be located at the first lens and the side of the second lens, compared to above-described embodiment In the first reflecting mirror between the first lens and the second lens, the light guiding piece in the present embodiment is easier to fixing with peace Dress.

Embodiment 11

This utility model embodiment also provides for another embodiment, and in this embodiment, light-emitting device also includes focussing mechanism, the One lens are fixed on this focussing mechanism, and this focussing mechanism is for regulating the distance from the first lens to Wavelength converter.Please It is the structural representation of focussing mechanism in another embodiment of light-emitting device in this utility model embodiment refering to Figure 12, Figure 12.

As shown in figure 12, the first lens 1150 both sides grow a support 1153 respectively, and focussing mechanism is cylinder, its sidewall On be symmetrically arranged with two skewed slots 1191, the first lens 1150 are fixed on two skewed slots of focussing mechanism by two supports 1153 On 1191.It is fixed with leader 1192 on focussing mechanism sidewall, rotates this handle, the sidewall of focussing mechanism can be rotated.Further, Support 1153 is fixed by immobilising device (not shown) in the horizontal direction and can not be translated, when the handle rotating focussing mechanism During hands 1192, the skewed slot 1191 of focussing mechanism and then rotates, and support 1153 is the most motionless, and in the vertical direction followed by The rotation of skewed slot 1191 and be raised and lowered, thus the first lens 1150 followed by the rotation of skewed slot and are raised and lowered, thus Make the first lens away from or near Wavelength converter.Such as, when rotating clockwise handle 1192, skewed slot 1191 turns clockwise Dynamic, and support 1153 is the most motionless, thus support 1153 and the first lens raise along with the rotation of skewed slot 1191.

Usually, making light source is conventional technology from lens focus out of focus, but have in this utility model the best Effect.When reducing because skewed slot rotates when the first lens, the first lens are close to Wavelength converter, and laser is being incident in ripple Just have the effect of for the first time out of focus, i.e. hot spot on material for transformation of wave length to become big during long transition material, then the first lens and Second lens collect this become big after hot spot time be also the collection of out of focus, so beam divergence angle just becomes much larger.The most just Being to say, the position of mobile first lens creates the effect of twice out of focus, and such beam divergence angle is for the movement of the first lens Distance is more sensitive so that beam divergence angle is more easily adjusted.

Embodiment 12

In the various embodiments described above, the emergent light major part outgoing of the Wavelength converter that the first lens are collected is saturating to second Mirror, the second lens are used for controlling the collimation outgoing of this emergent light.In other embodiments, the second lens can be used for control from The emergent light of Wavelength converter focuses on outgoing.Specifically referring to Figure 13, Figure 13 is light-emitting device in this utility model embodiment The structural representation of another embodiment.As shown in figure 13, light-emitting device 1200 includes the first laser instrument 1210, collimating lens 1220, the second reflecting mirror 1230, light guiding piece the 1240, first lens 1250, Wavelength converter the 1260, second lens 1270 with Diffusion sheet 1280.

The present embodiment is in place of the difference of embodiment two:

In the present embodiment, light-emitting device also includes the 3rd lens 1290 being positioned at the second lens light path rear end, from first The emergent light in lens 1,250 second district after the air of the first mirror environment is transmitted through the second lens 1270, the second lens 1270 Jointly this emergent light is focused on outgoing with the 3rd lens 1290.It is understood that in other embodiments, it is also possible to omit the Three lens, only control to focus on outgoing from the emergent light of Wavelength converter by the second lens 1270 that focal length is shorter.And And, it is also possible to the second lens are designed so that it realizes except standard for the emergent light controlled from Wavelength converter Directly, focus on outside other specific light distribution, such as automobile lamp light distribution.

In like manner, can be by designing the second lens so that the second lens in embodiment illustrated in fig. 11 for control from The emergent light of Wavelength converter focuses on outgoing.

Embodiment 13

In the various embodiments described above, the effect of the second lens is to realize spy for the emergent light controlled from Wavelength converter Fixed light distribution.The function of the second lens can also realize with other light-operated product, illustrates separately with another embodiment below The light-operated product of one form.Referring to Figure 14, Figure 14 is the knot of another embodiment of light-emitting device in this utility model embodiment Structure schematic diagram.As shown in figure 14, light-emitting device 1300 includes the first laser instrument 1310, collimating lens the 1320, second reflecting mirror 1330, light guiding piece the 1340, first lens 1350, Wavelength converter 1360 and diffusion sheet 1380.

The present embodiment includes in place of the difference of embodiment two:

In the present embodiment, light-operated product is not the second lens, but reflective surface 1370.First lens 1,350 second district receives The emergent light of Wavelength converter 1360 of collection, is transmitted through reflective surface 1370 through the air of the first mirror environment, and this is reflective Curved surface is for controlling to realize the light distribution of automobile lamp from the emergent light of Wavelength converter.The light of automobile lamp is distributed in existing Have in technology and there is the standard determined, do not repeat.In other embodiments, it is also possible to by design reflective surface, make Reflective surface realizes other specific light distributions such as collimation, focusing for the emergent light controlled from Wavelength converter.

Embodiment 14

Referring to Figure 15, Figure 15 is the structural representation of another embodiment of light-emitting device in this utility model embodiment. As shown in figure 15, light-emitting device 1400 includes the first laser instrument 1410, collimating lens 1420, light guiding piece the 1440, first lens 1450, Wavelength converter 1460 and diffusion sheet 1480.

The present embodiment includes in place of the difference of embodiment ten:

(1) in the present embodiment, light guiding piece 1440 is reflective surface, and the firstth district of light guiding piece 1440 is loophole 1441, the secondth district is the reflecting mirror 1442 around loophole, and reflecting mirror 1442 is reflecting curved surface.

(2) in the present embodiment, light guiding piece 1440 is also light-operated product, and the most light-operated product is integrated with light guiding piece. The whole outgoing of emergent light of Wavelength converter that first lens 1450 are collected is to light guiding piece 1440, wherein, and the first lens the The emergent light outgoing of Wavelength converter that 2nd district collect is to the light light-operated product of guiding piece 1440() reflecting curved surface 1442, this is anti- Penetrate curved surface 1442 for controlling to realize the light distribution of automobile lamp from the emergent light of Wavelength converter.In other embodiments In, it is also possible to by design reflective surface 1442, make reflective surface realize for the emergent light controlled from Wavelength converter Other specific light distributions such as collimation, focusing.

The various embodiments described above solve the technical problem that and are, when needing to collect the wide-angle distribution light of Wavelength converter outgoing Time, the bulky problem that light-emitting device exists.It is understood that this utility model is not limited in for outgoing wide-angle The Wavelength converter of distribution light, and it is equally applicable to other devices of outgoing wide-angle distribution light, such as scattering device.True On, the second laser of outgoing the second laser mentioned in embodiment one, such as red laser, Wavelength converter for This second laser is i.e. equivalent to scattering device.Therefore, the Wavelength converter in the various embodiments described above can replace to scattering dress Put, and now, the laser of the first laser emitting needs not be exciting light.

Wavelength converter is replaced to the light-emitting device of scattering device and includes the first laser instrument, collimating lens, first saturating Mirror and scattering device；First laser instrument is for shoot laser to collimating lens, and collimating lens is used for collimating this laser；First lens Including the firstth district and the secondth district, the light-receiving area in the firstth district is less than the 1/2 of the light-receiving area in the secondth district, the focal distance ratio in this firstth district The focal length in this secondth district is short, carrys out the laser light incident of self-focus lens to this firstth district, and this firstth district is for by this laser focusing extremely Scattering device；It is scattered light that scattering device is used for laser light scattering, and is included that the emergent light of this scattered light reflexes to first Firstth district of lens and the secondth district；First lens are additionally operable to collect emergent light the outgoing of scattering device incident thereon.This Place, the light-receiving area in first lens the firstth district refers to first covered when the emergent light of scattering device is incident on this firstth district The surface area in district, the light-receiving area in first lens the secondth district refers to be covered when the emergent light of scattering device is incident on this secondth district The surface area in the secondth district of lid.

The structure that the light-emitting device that Wavelength converter replaces to scattering device can possess in the various embodiments described above with Function, describes in detail and refer to the various embodiments described above, only simply enumerates some herein:

Alternatively, the light-emitting device that Wavelength converter replaces to scattering device also includes light-operated product, the first lens At least most of outgoing of emergent light of the scattering device collected is to this light-operated product, and it is real that this light-operated product is used for controlling this emergent light Now specific light distribution.Light-operated product can be the second lens, reflecting curved surface or other can realize specific photodistributed optics unit Part.

Alternatively, the light-emitting device that Wavelength converter replaces to scattering device also includes light guiding piece, in the future The laser of self-focus lens guides the firstth district to the first lens along the first light path, going out of the scattering device collected by the first lens Penetrate at least most of of light to guide to light-operated product along the second light path.

Light guiding piece can be such as embodiment one in light splitting optical filter, now light splitting optical filter should have the first laser The attribute of the laser part transmissive portion reflection of device.Light guiding piece can also be to be divided into the firstth district and as in other embodiments The light guiding piece in 2nd district.Therefore, alternatively, light guiding piece includes the firstth district and the secondth district, and the light-receiving area in this firstth district is less than The 1/2 of the light-receiving area in the secondth district, this firstth district is saturating to first along the first light path guiding for the laser of self-focus lens in the future Firstth district of mirror, the emergent light of this secondth district scattering device for being collected in first lens the secondth district guides extremely along the second light path Light-operated product.Firstth district of light guiding piece is the first reflecting mirror, and the secondth district is the light transmission medium of the first mirror environment；Or, Firstth district of light guiding piece is loophole, and the secondth district is the reflecting mirror around loophole.

Can also be identical with embodiment 14, the firstth district of light guiding piece is loophole, and the secondth district is around loophole Reflecting mirror, and this reflecting mirror is reflecting curved surface；Also it is light-operated product with time guiding piece.

Alternatively, being replaced to by Wavelength converter in the light-emitting device of scattering device, the first lens are saturating compared to plano-convex For mirror, bottom surface is plane or concave surface, and upper surface has projection, and this projection constitutes the first of the first lens with protruding lower part District.

Alternatively, the light-emitting device that Wavelength converter replaces to scattering device also includes that second laser is with corresponding After the laser of collimating lens, the laser of the first laser emitting and second laser outgoing collimated collimated respectively, it is combined into Beam of laser is also incident to the firstth district of the first lens；Scattering device is additionally operable to scatter the laser from second laser.Second Laser instrument can be red laser, green laser or infrared laser

Alternatively, the light-emitting device that Wavelength converter replaces to scattering device also includes focussing mechanism, the first lens Being fixed on this focussing mechanism, this focussing mechanism is for regulating the distance from the first lens to scattering device.

Embodiment 15

In embodiment one, if the reflection whole to exciting light of light splitting optical filter, then not changed of Wavelength converter outgoing Exciting light cannot outgoing to the second lens, light-emitting device cannot the mixed light of outgoing Stimulated Light and exciting light；Light splitting optical filter If fractional transmission partially reflective to exciting light, although the exciting light do not changed have part light can with outgoing to the second lens, But the exciting light from the first laser instrument has part light meeting transmission light splitting optical filter to cause light loss.To this end, this utility model Also provide for another embodiment, in this embodiment, have two the first lens, second lens and a light-dividing device, light splitting Incident laser is divided into two parts by device, is separately directed to two the first lens, and these two parts are entered by two the first lens respectively Penetrate laser aiming to divide to Wavelength converter and scattering device, the emergent light of Wavelength converter with the emergent light warp of scattering device After electro-optical device conjunction light, outgoing is to the second lens.For ease of distinguish, below two the first lens are called the first lenslet with Second lens are referred to as big lens by the second lenslet.

Referring to Figure 16 a, Figure 16 a is the structural representation of another embodiment of light-emitting device in this utility model embodiment Figure.As illustrated in fig 16 a, light-emitting device 1500 includes the first laser instrument 1510a, the first collimating lens 1520a, second laser 1510b, the second collimating lens 1520b, reflecting mirror 1530a, optical filter 1530b, light-dividing device the 1540, first lenslet 1550a, Second lenslet 1550b, first wave length conversion equipment 1560a, scattering device 1560b, big lens 1570 and diffusion sheet 1580. First lenslet 1550a, structure and first lens in function reference the various embodiments described above of the second lenslet 1550b, the most thoroughly The structure of mirror 1570 and function are with reference to the second lens in the various embodiments described above.

First laser instrument 1510a uses for outgoing the first light to the first collimating lens 1520a, the first collimating lens 1520a In collimating this first light；Second laser 1510b is used for outgoing the second light to the second collimating lens 1520b, the second collimating lens It is exciting light (being such as blue light) for collimating this second light, the first light and the second light.

The first light after first collimating lens 1520a collimation is reflected mirror 1530a and reflexes to the side of optical filter 1530b, The opposite side of the second light incidence optical filter 1530b after the second collimating lens 1520b collimation, optical filter 1530b should for transmission First light and reflect this second light, after the first light and the second light are combined into light beam, outgoing to diffusion sheet 1580, diffusion sheet 1580 By outgoing after this first light and the second light scattering to light-dividing device 1540.

Light-dividing device 1540 is accurate for the first light and second receiving the first collimating lens 1520a outgoing from diffusion sheet 1580 Second light of straight lens 1520b outgoing, and partially reflective to the first light and the equal fractional transmission of the second light, guide the first light and second The light outgoing the firstth district to the first lenslet 1550a and firstth district of the second lenslet 1550b.

Firstth district of the first lenslet 1550a is for focusing to the from the first light of light-dividing device 1540 and the second light One Wavelength converter 1560a；Firstth district of the second lenslet 1550b is for by the first light and the from light-dividing device 1540 Two light focus to scattering device 1560b.

First wave length conversion equipment 1560a is for turning the first light and the second optical wavelength from the first lenslet 1550a It is changed to the first Stimulated Light, and this first Stimulated Light is reflexed to the first lenslet 1550a；First lenslet 1550a is used for should First Stimulated Light is collected to light-dividing device 1540.Scattering device 1560b for by from the second lenslet 1550b the first light with Second light scattering is scattered light, and this scattered light reflexes to the second lenslet 1550b；Second lenslet 1550b is used for should Scattered light is collected to light-dividing device 1540.

Light-dividing device 1540, for the first Stimulated Light of transmission the first lenslet 1550a outgoing, reflects the second lenslet The some scattered light of 1550b outgoing, thus the part light of this two-way light is combined into a branch of conjunction light (because of the second lenslet outgoing Scattered light has part light and is transmitted through diffusion sheet 1580 through light-dividing device), and outgoing is to big lens 1570.Big lens 1570 are used for By in this conjunction light, from the first lenslet 1550a the secondth district the first Stimulated Light and from the secondth district of the second lenslet Scattered light collimation outgoing.

Owing to light path is reversible, the first Stimulated Light of the firstth district outgoing of the first lenslet 1550a has been collimated light, this standard Direct light outgoing after light-dividing device 1540, to big lens 1570, can be dissipated by big lens 1570, and can not be accurate by big lens 1570 Directly.The scattered light of the firstth district outgoing of the second lenslet 1550b is collimated light equally, it is impossible to collimated by big lens 1570.

Identical with the various embodiments described above, the present embodiment solves the problem that in prior art, system bulk is big veritably, with Time, the spot size that the present embodiment focuses to Wavelength converter and scattering device is less than the spot size of initial scheme very Many.Further, light-dividing device is partially reflective to exciting light fractional transmission, not only makes the exciting light of Wavelength converter outgoing have portion Light splitting can be transmitted through big lens through light-dividing device so that light-emitting device can be with the mixed light of outgoing Stimulated Light Yu exciting light；And And from after the exciting light fractional transmission light-dividing device of laser instrument, having scattering device scattering is scattered light, and this scattered light has part Therefore light can also reduce light loss through light-dividing device outgoing to big lens.From this derivation it can be seen that in order to outgoing mix Light also reduces light loss, as long as there being the first laser instrument, second laser set out above, only to facilitate illustrate following More preferably scheme.

In the present embodiment, it is preferable that light-dividing device, in different Transflective ratios, guides the first light and the second smooth outgoing The firstth district and the firstth district of the second lenslet to the first lenslet.Such as, the first smooth transmission 20% is reflected by light-dividing device 1540 80%, the second smooth transmission 10% is reflected 90%.Owing to light-dividing device is different to the Transflective ratio of the first light, the second light, because of This, can be by changing the luminous power of the emergent light of the first laser instrument and/or second laser (such as by changing laser instrument Drive the mode of curtage), change light-dividing device outgoing to the emergent light ratio of the first lenslet and the second lenslet, And then regulate the first Stimulated Light and the ratio of scattered light in light-emitting device emergent light, thus change color or the colour temperature of emergent light. Make a concrete analysis of as follows:

Assuming that the luminous power of the first light and the second light is respectively p and q, light-dividing device 1540 is a to the absorbance of the first light, Reflectance is 1-a, and light-dividing device is b to the absorbance of the second light, and reflectance is 1-b, and light-dividing device 1540 outgoing is little to first First light of lens 1550a and the luminous power of the second light are x, light-dividing device 1540 outgoing to the first of the second lenslet 1550b The luminous power of light and the second light is y, then x=p (1-a)+q (1-b), y=pa+qb.Owing to light-dividing device is to the first light, second light Transflective ratio is different, i.e. a ≠ b, so changing p and/or q, can change in y/x, and then regulation light-emitting device emergent light the One Stimulated Light and the ratio of scattered light, thus change color or the colour temperature of emergent light.Further, electric current or driving are driven by regulation The mode of voltage regulates color or colour temperature, not only fast and easy, and more accurate.

Specifically, in the present embodiment, the first laser instrument 1510a and second laser 1510b is that the blue light that wavelength is identical swashs Light device, and two laser instrument are positioned orthogonally with respect to each, the first light of the first laser instrument 1510a outgoing is relative to light-dividing device 1540 The plane of incidence is P polarization light, and the second light of second laser 1510b outgoing is S-polarization relative to the plane of incidence of light-dividing device 1540 Light.Optical filter 1530b has the attribute of transmitting P-type polarisation luminous reflectance S-polarization light.The P polarization light warp of the first laser instrument 1510a outgoing Reflecting mirror 1530a reflexes to optical filter 1530b, and the S-polarization light of second laser 1510b outgoing is incident to optical filter 1530b, filter P polarization light and S-polarization light are combined into a branch of conjunction light by mating plate 1530b, and shine on diffusion sheet 1580.

Light-dividing device 1540 realizes fractional transmission and reflection to incident P polarization light, to incident S-polarization light also achievement unit Divide transmission and reflection, but different to the Transflective ratio of both polarized light.Such as, referring to Figure 16 b, Figure 16 b is light splitting The device optical filtering curve of spectrum schematic diagram to incident P polarization light with S-polarization light.In Figure 16 b, abscissa is wavelength, vertical coordinate For absorbance, the solid line curve of spectrum is the curve of spectrum to P polarization light, and the dotted line curve of spectrum is the curve of spectrum to S-polarization light. It can be seen that for wave-length coverage at the blue light of 440nm-460nm, light-dividing device is saturating to incident P polarization light from Figure 16 b The rate of penetrating is about 30%, and reflectance is about 70%, and the absorbance to incident S-polarization light is about 10%, and reflectance is 90% left side Right.

First wave length conversion equipment 1560a is specially yellow fluorescent powder, will be converted into from the blue laser of the first light path Yellow Stimulated Light, this yellow Stimulated Light is reflected by Wavelength converter 1560a and through the first lenslet 1550a to light-dividing device 1540.Incident blue laser is scattered by scattering device 1560b, and this blueness scattered light is scattered device 1560b and reflects also Through the second lenslet 1550b to light-dividing device.

The yellow Stimulated Light of light-dividing device 1540 transmission peak wavelength conversion equipment 1560a output, reflective scattering device 1560b is defeated The part blueness scattered light gone out, is mixed into beam of white light by this blueness scattered light and yellow Stimulated Light, and outgoing is light-emitting device Emergent light.In this specific embodiment, utilize light-dividing device that the plated film curve of p-polarization light and s polarized light can separate be belonged to naturally Property, realize the light-dividing device different Transflective ratio to the first light and the second light, thus not only by regulation two The p-polarization light of individual laser instrument outgoing respectively and the luminous power of s polarized light, and then regulation light-dividing device is from the first lenslet and second The outgoing blue light ratio of lenslet, finally changes color or the colour temperature of emergent light, but also avoids light-dividing device plated film The strict control of technique.

Part exciting light is guided to scattering device by light-dividing device 1540 from the second lenslet 1550b, this part exciting light Proportion is the least, that be scattered when device is reflected back light-dividing device can the ratio of return laser light device the least, otherwise the biggest. Therefore, in order to reduce the loss that scattered light return laser light device causes, it is preferable that at the first light and second that the first laser instrument sends In the second smooth two-way light that laser instrument sends, light-dividing device at least guides the ratio of a road light outgoing to the second lenslet more than 0 And less than 0.5；The ratio that i.e. light-dividing device 1540 guides the light of the first smooth outgoing to the second lenslet 1550b to account for the first light is more than 0 and less than 0.5；Or/and, light-dividing device 1540 guides the light of the second smooth outgoing to the second lenslet 1550b to account for the ratio of the second light Example is more than 0 and less than 0.5.Such as, in the present embodiment, light-dividing device 203 to the absorbance of incident P polarization light more than 0 and Less than 50%, the absorbance of incident S-polarization light also greater than 0 and is less than 50%.

In the present embodiment, light-dividing device specifically uses polarization spectro, in other embodiments, it would however also be possible to employ wavelength divides Light.Specifically, the first light and the polarization characteristic of the second light that the first laser instrument 1510a and second laser 1510b exports are identical, But wavelength is different.Now the first light and the second light are respectively provided with different first wave length and second wave length, and optical filter 1530b is Penetrate the wavelength Multiplexing apparatus of first wave length reflection second wave length.The exciting light of these two kinds of different wave lengths is had by light-dividing device 1540 Different Transflective ratios.Such as, referring to Figure 16 c, Figure 16 c is the light-dividing device optical filtering light to incident different wavelengths of light Spectral curve schematic diagram.In Figure 16 c, abscissa is wavelength, and vertical coordinate is absorbance.It can be seen that light-dividing device pair from Figure 16 c Wavelength b1 is different from the absorbance of the light of wavelength b2.Now, again may be by the driving of drive circuit two laser instrument of regulation Electric current, regulates light-dividing device outgoing to the emergent light ratio of the first lenslet and the second lenslet, and then the last output of regulation The color of light or colour temperature.In this specific embodiment, utilize the light-dividing device can separate nature to the plated film curve of different wavelengths of light Attribute, realizes the light-dividing device different Transflective ratio to the first light and the second light, thus not only by regulation The luminous power of two laser instrument two kinds of wavelength light of outgoing respectively, finally changes color or the colour temperature of emergent light, but also keeps away Exempt from the strict control to light-dividing device coating process.

It is understood that reflecting mirror 1530a can also omit, as long as adjusting the first laser instrument 1510a and first collimation The putting position of lens 1520a and angle so that the laser straight of the first collimating lens 1520a outgoing accesses and penetrates optical filter 1530b ?.Even, do not ask emergent light spot try one's best little in the case of, optical filter 1530b is also dispensed with, now first swash Light device 1510a and second laser 1510b all directly shoot laser to diffusion sheet, and two hot spots side by side and in close proximity to and close It it is a large spot.

In the present embodiment, first wave length conversion equipment 1560a is reflective, can include reflective and be arranged on Wavelength conversion sheet (such as yellow fluorescent powder sheet) in reflective, the Stimulated Light reflection that wavelength conversion sheet is produced by reflective To the first lenslet 1550a.In the present embodiment, material for transformation of wave length absorbs all exciting lights, the most also may be used Only to absorb part exciting light, now first wave length conversion equipment is by its emergent light, the i.e. first Stimulated Light and swashing of not changed Luminous mixed light reflexes to the first lenslet 1550a, this swashing of not changed of light-dividing device transmission the first Stimulated Light and part Luminous.

In the present embodiment, concrete employing the first light and the second light are blue light, and blue scattered light is mixed into yellow Stimulated Light The example of white light illustrates how this utility model changes emergent light color.In other embodiments, it would however also be possible to employ other face The example of color.Such as, the first light and the second light are green light, and cyan scattered light is mixed into white light with red Stimulated Light；Or, first Light and the second light are blue light, and blue excitation light is mixed into purple light with red Stimulated Light；Or, the first light and the second light are respectively indigo plant Light and green light, blue cyan scattered light and yellow Stimulated Light be mixed into white light etc., as long as the first light and the second light can excite the One Wavelength converter produces the first Stimulated Light.

But the most not limiting the first light and the second light is exciting light, the first light and the second light can also only one of which Being exciting light, now first wave length conversion equipment absorbs exciting light therein, and is scattered another light.Such as first light with Second light is respectively blue light and HONGGUANG, blue light together with HONGGUANG after the incident first wave length conversion equipment comprising yellow fluorescent powder, Yellow fluorescent powder absorbs blue light and produces gold-tinted, and is scattered HONGGUANG, therefore first wave length conversion equipment outgoing gold-tinted And the HONGGUANG after scattering；Correspondingly, the gold-tinted of light-dividing device transmission first wave length conversion equipment outgoing and HONGGUANG, and reflect scattered The some blue light of injection device outgoing.

Additionally, with embodiment one described in identical, Wavelength converter and scattering device all can use LED as base Plate, material for transformation of wave length (such as fluorescent material) or scattering material are arranged in the light-emitting area of LED in modes such as coating or pad pastings.Or Person, light-emitting device can also include the 3rd laser instrument and corresponding collimating lens, and the exciting light of the 3rd laser emitting is through this standard After straight collimated, it is combined into beam of laser with the laser of the first laser instrument, second laser outgoing and is incident to light-dividing device, and The firstth district to the first lenslet and/or the firstth district of the second lenslet is guided so that first wave length is changed through this light-dividing device The emergent light of device or scattering device comprises the light of the 3rd laser instrument；3rd laser instrument is preferably infrared laser or HONGGUANG swashs Light device.Describe in detail with reference to embodiment one, do not repeat.

In other embodiments, the position of first wave length conversion equipment 1560a and scattering device 1560b can exchange, i.e. The reflection light of light-dividing device is incident to scattering device, and the transmission light of light-dividing device is incident to first wave length conversion equipment；And light splitting Device is for reflecting the Stimulated Light that first wave length conversion equipment produces, and the some scattered light of transmission scattering device outgoing.

Further, in other embodiments, scattering device 1560b (can also be claimed herein by another kind of Wavelength converter For second wave length conversion equipment) substitute.Now, the first Stimulated Light of first wave length conversion equipment outgoing is changed with second wave length The second Stimulated Light outgoing together of device outgoing is the emergent light of light-emitting device.Such as, the first light and second can specifically be used Light is blue light, and first wave length conversion equipment and second wave length conversion equipment include red fluorescence powder and green emitting phosphor respectively, sends out The gold-tinted that electro-optical device outgoing is mixed with green Stimulated Light by red Stimulated Light, or outgoing is subject to green by redness Stimulated Light Laser and the white light of blue light do not changed by Wavelength converter.Again may be by drive circuit to adjust herein The driving curtage of two laser instrument of joint, regulates light-dividing device outgoing to the first lenslet and the outgoing of the second lenslet First Stimulated Light and the ratio of the second Stimulated Light in light ratio, and then regulation light-emitting device emergent light, thus change emergent light Color or colour temperature.

In the present embodiment, so that the big lens that emergent light realizes collimation illustrate as a example by light-operated product.At other In embodiment, light-operated product can also be reflecting curved surface or other can realize specific photodistributed optical element.Light-operated product is also Can realize focusing on, other specific light distribution such as the light distribution of automobile lamp.

Emergent light for the firstth district of two lenslets can not be had in above-described embodiment by this problem of big collimated Propose big lens are carried out this way of subregion, describe in detail and refer to Fig. 5, Fig. 6, embodiment illustrated in fig. 7, herein the most briefly Bright.

It is same as Fig. 5, embodiment illustrated in fig. 6, it is preferable that big lens 1570 include the firstth district and the secondth district, the of big lens Relative two surfaces, one district are parallel to each other；Going out of the first wave length conversion equipment that firstth district of the first lenslet 1550a collects Penetrate light after light-dividing device 1540, the firstth district of at least most of outgoing to big lens, thus light direction will not change.Such as, When the emergent light of first wave length conversion equipment only has Stimulated Light, this emergent light can all outgoing to the firstth district of big lens； When the emergent light of first wave length conversion equipment includes the first light or the second light time, the of this emergent light major part outgoing to big lens One district.The emergent light of first wave length conversion equipment 1560a that secondth district of the first lenslet 1550a collects after light-dividing device, At least most of outgoing is to the secondth district of big lens, and by the secondth district collimation outgoing of big lens.The of second lenslet 1550b The emergent light of scattering device 1560b that one district collects after light-dividing device, the firstth district of part outgoing to big lens, thus light side To changing.The emergent light of scattering device that secondth district of the second lenslet 1550b collects after light-dividing device, part outgoing To the secondth district of big lens, and by the secondth district collimation outgoing of big lens.

Or, it is same as embodiment illustrated in fig. 6, it is preferable that big lens 1570 include the firstth district and the secondth district, this firstth district phase To two surfaces be two confocal curved surfaces, and the area of light path rear end surface is more than the area of end curved surface before light path, therefore Two curved surfaces constitute beam-expanding system.The emergent light of the first wave length conversion equipment that the firstth district of the first lenslet collects is through light splitting After device, the firstth district of at least most of outgoing to big lens；The first wave length conversion dress that secondth district of the first lenslet collects The emergent light put after light-dividing device, the secondth district of at least most of outgoing to big lens, and accurate by the secondth district of these big lens Straight outgoing.The emergent light of the scattering device that the firstth district of the second lenslet collects is after light-dividing device, and part outgoing is to big lens The firstth district；The emergent light of the scattering device that the secondth district of the second lenslet collects is after light-dividing device, and part outgoing is to big saturating Secondth district of mirror, and by the secondth district collimation outgoing of these big lens.

In this specification, what each embodiment stressed is the difference with other embodiments, each embodiment Between identical similar portion see mutually.

This utility model embodiment also provides for a kind of optical projection system, including light-emitting device, on this light-emitting device can have State the structure in each embodiment and function.This optical projection system can use various shadow casting technique, such as liquid crystal display (LCD, Liquid Crystal Display) shadow casting technique, digital light path processor (DLP, Digital Light Processor) throw Shadow technology.Such as, the light-emitting device of above-mentioned ejecting white light can be as the white light source of optical projection system.

This utility model embodiment also provides for a kind of illuminator, including light-emitting device, on this light-emitting device can have State the structure in each embodiment and function.Illuminator such as has torch for illumination system, auto lamp illuminator, stage lighting to illuminate System etc..

The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, all It is the equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion, or directly or indirectly uses In the technical field that other are relevant, the most in like manner it is included in scope of patent protection of the present utility model.

Claims

1. a light-emitting device, it is characterised in that include the first laser instrument, collimating element, the first lens and scattering device；

First laser instrument is for shoot laser to described collimating element, and described collimating element is used for collimating this laser；

First lens include the firstth district and the secondth district, the light-receiving area in the firstth district less than the secondth district light-receiving area 1/2, this is the years old The focal length in this secondth district of the focal distance ratio in one district is short, and from the laser light incident of described collimating element to this firstth district, this firstth district uses In by this laser focusing to described scattering device；

It is scattered light that described scattering device is used for described laser light scattering, and its emergent light reflexes to the firstth district of the first lens With the secondth district；

First lens are additionally operable to collect emergent light the outgoing of described scattering device incident thereon.

Light-emitting device the most according to claim 1, it is characterised in that described light-emitting device also includes light-operated product, first At least most of outgoing of emergent light of the described scattering device that lens are collected is to this light-operated product, and this light-operated product is used for controlling this Emergent light realizes the distribution of specific light.

Light-emitting device the most according to claim 2, it is characterised in that described light-emitting device also includes light guiding piece, is used for Laser from described collimating element is guided the firstth district to the first lens along the first light path, described in the first lens collection At least most of of the emergent light of scattering device guides to described light-operated product along the second light path.

Light-emitting device the most according to claim 3, it is characterised in that described smooth guiding piece includes the firstth district and the secondth district, The light-receiving area in this firstth district is less than the 1/2 of the light-receiving area in the secondth district, and this firstth district is for by from described collimating element Laser guides the firstth district to the first lens along the first light path, and this secondth district is described scattered for collected in first lens the secondth district The emergent light of injection device guides to described light-operated product along the second light path；

Firstth district of described smooth guiding piece is the first reflecting mirror, and the secondth district is the light transmission medium of the first mirror environment；Or, institute The firstth district stating light guiding piece is loophole, and the secondth district is the reflecting mirror around loophole.

Light-emitting device the most according to claim 4, it is characterised in that the firstth district of described smooth guiding piece is loophole, the 2nd district are the reflecting mirror around loophole, and this reflecting mirror is reflecting curved surface；Described smooth guiding piece is also described light-operated product.

Light-emitting device the most according to claim 1, it is characterised in that for the first lens are compared to planoconvex lens, bottom surface For plane or concave surface, upper surface has projection, and this projection constitutes the firstth district of the first lens with protruding lower part.

Light-emitting device the most according to claim 1, it is characterised in that this light-emitting device also includes that second laser is with corresponding Collimating element, after the laser of the laser of the first laser emitting and second laser outgoing collimated element collimation respectively, close For beam of laser the firstth district of being incident to the first lens；Described scattering device is additionally operable to scatter swashing from second laser Light.

Light-emitting device the most according to claim 1, it is characterised in that this light-emitting device also includes focussing mechanism, and first is saturating Mirror is fixed on this focussing mechanism, and this focussing mechanism is for regulating from the first lens to the distance of described scattering device.

9. an optical projection system, it is characterised in that include the light-emitting device as according to any one of claim 1 to 8.

10. an illuminator, it is characterised in that include the light-emitting device as according to any one of claim 1 to 8.