CN105911805B - A kind of compact-sized light-source system - Google Patents

A kind of compact-sized light-source system Download PDF

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Publication number
CN105911805B
CN105911805B CN201610153057.4A CN201610153057A CN105911805B CN 105911805 B CN105911805 B CN 105911805B CN 201610153057 A CN201610153057 A CN 201610153057A CN 105911805 B CN105911805 B CN 105911805B
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light
speculum
source
excitation source
exciting light
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CN105911805A (en
Inventor
胡飞
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Shenzhen Appotronics Technology Co Ltd
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Shenzhen Yili Ruiguang Technology Development Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam

Abstract

The invention discloses a kind of light-source system using LASER Excited Fluorescence powder, including：First excitation source, the first speculum, collecting lens, collimation lens, phosphor powder layer and the second speculum.Phosphor powder layer is coated on the second speculum, collimation lens has the first surface towards phosphor powder layer, first speculum is located on the first surface, and first excitation source and phosphor powder layer be located at the homonymy of collimation lens, relative to the prior art, the light-source system has small, compact-sized, the advantages that heat dissipation design is easy.

Description

A kind of compact-sized light-source system
The present invention is Application No. 201310046130.4, the applying date is on 2 5th, 2013, entitled " one kind knot The divisional application of the patent application of the compact light-source system of structure ".
Technical field
The present invention relates to illumination and display technology field, more particularly to a kind of compact-sized light-source system.
Background technology
It is each to be just progressively applied to illumination, projection etc. as a kind of high brightness, the new type light source of high collimation for laser light source Field.Wherein, using the light source of LASER Excited Fluorescence powder technology, have the advantages that etendue is small, brightness is high, long lifespan, Cause people's extensive concern.
Fig. 1 is a kind of light-source system that make use of LASER Excited Fluorescence powder technology in the prior art.As shown in Figure 1, the light Source system includes excitation source 110, radiator 120, the first speculum 130, collimation lens 140, collecting lens 150, fluorescence Bisque 160, the second speculum 170.Typically, excitation source 110 is laser diode, is welded on radiator 120, heat dissipation Device 120 is used for radiating to it.The exciting light 180 that excitation source 110 produces first incides on the first speculum 130 and quilt It is reflected, then reflected light passes through collimation lens 140 and collecting lens 150, is ultimately incident upon on phosphor powder layer 160.Fluorescent powder Layer 160 is coated on the second speculum 170.The front surface of exciting light from phosphor powder layer 160 is incident, and is converted into another wavelength The stimulated light outgoing of scope.The effect of speculum 170 is the light reflection exported backward returning front surface outgoing.From phosphor powder layer The output light 190 of 160 outgoing includes the residue not absorbed by the stimulated light of phosphor powder layer sorption enhanced and by phosphor powder layer Exciting light, collection and collimation of 190 priority of output light through lens 150 and 160, are finally emitted from the surrounding of speculum 130.Instead Mirror 130 is penetrated to be in output light path, so part output light can be blocked, but since its area very little, the part light can be ignored.
Fig. 2 is another light-source system for utilizing LASER Excited Fluorescence powder technology in the prior art.The light-source system includes Excitation source 210, radiator 220, the first speculum 230, collimation lens 240, collecting lens 250, phosphor powder layer 260, the Two-mirror 270.Typically, excitation source 210 is laser diode, is bonded on radiator 220, and radiator 220 is used To radiate to it.Difference lies in changed the small reflector 130 in Fig. 1 into band perforate with light-source system shown in Fig. 1 for it 231 speculum 230, at this time, the exciting light 280 that excitation source 210 is sent will transmit through the perforate 231 and incide phosphor powder layer 260 front surface, and will synthesize output light from the stimulated light of phosphor powder layer outgoing and without absorbed residual excitation light 290, collection and collimation successively through lens 250 and 240, finally reflect output by speculum 230.In this structure, although opening Hole 231 can miss part output light, but due to its area very little, can ignore.
In two above example, last output light is all exciting light and the mixed light of stimulated light.Actually also can be by light The light-dividing devices such as the small reflector in the system of source replace with the light splitting optical filter of monoblock, for light-source system shown in Fig. 1, this point Light optical filter reflected excitation light and transmit stimulated light；For light-source system shown in Fig. 2, the light splitting filter transmission exciting light and Reflect stimulated light.In this way, the optical filtering by being divided optical filter, can prevent exciting light from being emitted, make there was only stimulated light in output light.
However, there is a defect in the light-source system structure of existing LASER Excited Fluorescence powder technology, that is, The exciting light that excitation source is sent can just incide fluorescent powder after must first passing through the optical elements such as collecting lens and collimation lens On, cause the light path between excitation source and phosphor powder layer too long, while need to consider the volume of placed light-dividing device so that Whole system is bulky.In addition, when excitation light power is very big, it is also necessary to separately design dissipating for excitation source and fluorescent powder Heat.
The content of the invention
Problem to be solved by this invention is to simplify the structure of the light-source system of LASER Excited Fluorescence powder, so as to reduce light The volume of source system；Optimize the heat dissipation design of excitation source and phosphor powder layer, whole light-source system more compact structure at the same time.
To solve problem above, the embodiment of the present invention proposes a kind of compact-sized light-source system, including：
First excitation source, for being emitted the first exciting light；
First speculum, for reflecting the first exciting light of the first excitation source outgoing；
Wavelength conversion layer, for absorbing the first exciting light to be emitted stimulated light, it includes opposite first surface and second Surface, wherein first surface are used for the first exciting light for receiving the reflection of the first speculum, and by first exciting light or first Exciting light and the mixed light of stimulated light are emitted；
Second speculum, positioned at the second surface of wavelength conversion layer, the stimulated light produced for reflective wavelength-converting layer；
Collecting lens, for collecting the emergent light of wavelength conversion layer first surface；
Collimation lens, has the first surface towards wavelength conversion layer, for receiving the emergent light of collecting lens, and to it Carry out collimation outgoing；
Wherein, the first excitation source and wavelength conversion layer are located at the homonymy of the first surface of collimation lens, the first speculum It is fixed on the first surface of collimation lens, and the emergent light in collecting lens is formed in the first surface of collimation lens In the range of hot spot.
Relative to the prior art, the first speculum of the invention plays the role of original light-dividing device, but eliminates Volume shared by former light-dividing device, while excitation source and phosphor powder layer are arranged to the homonymy of collimation lens, makes between them Distance be also no longer influenced by the limitation of collecting lens and collimation lens so that the volume of whole light-source system greatly reduces.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of the light-source system of LASER Excited Fluorescence powder in the prior art；
Fig. 2 is the structure diagram of the light-source system of another LASER Excited Fluorescence powder in the prior art；
Fig. 3 a are a kind of structure diagram of the first embodiment of the light-source system of the present invention；
Fig. 3 b are another structure diagram of the first embodiment of the light-source system of the present invention；
Fig. 4 a are a kind of structure diagram of the second embodiment of the light-source system of the present invention；
Fig. 4 b are another structure diagram of the second embodiment of the light-source system of the present invention；
Fig. 4 c are another structure diagram of the second embodiment of the light-source system of the present invention；
Fig. 5 is the structure diagram of the 3rd embodiment of the light-source system of the present invention；
Fig. 6 a are the structure diagram of the fourth embodiment of the light-source system of the present invention；
Fig. 6 b are another structure diagram of the fourth embodiment of the light-source system of the present invention；
Embodiment
Embodiments of the present invention are described in detail with reference to the accompanying drawings and examples.
First embodiment
Fig. 3 a are the structure diagram of the first embodiment of the light-source system of the present invention.In fig. 3 a, light-source system includes Excitation source 310, radiator 320, the first speculum 330, collimation lens 340, collecting lens 350, phosphor powder layer 360, the Two-mirror 370.Collimation lens 340 has the first surface 341 towards phosphor powder layer 360.Excitation source 310 and phosphor powder layer 360 are arranged on the homonymy of the first surface 341 of collimation lens 340, and the first speculum 330 is fixed on the first surface 341.Receive Collect lens 350 between collimation lens 340 and phosphor powder layer 360.Fixed in addition, excitation source 310 tilts to make its outgoing Exciting light 380 relative to collimation lens 340 inclined light shaft so that ensure excitation source 310 be emitted exciting light 380 can enter It is mapped on the first speculum 330, and is reflected off to phosphor powder layer 360.
In the present embodiment, excitation source 310 is fixed and (most commonly welded) on radiator 320, radiator 320 are used for radiating to it.First speculum 330 is fixed on the first surface 341 of collimation lens 340, its act on be by The exciting light 380 that excitation source 310 is sent reflexes to phosphor powder layer 360, so it should be located at a suitable position：The position Must be in the range of the hot spot that the emergent light of collecting lens 350 is formed on the first surface 341 of collimation lens 340.Because According to the reversible principle of light path, if the full-shape being emitted from phosphor powder layer 360, which shines, can be irradiated to the first speculum 330, that Also a light path is certainly existed so that the exciting light reflected through the first speculum 330 can also incide phosphor powder layer 360 On.Be located at due to the first speculum 330 in the light path of output light, thus from phosphor powder layer 360 export light (including stimulated light and Not by residual excitation light that phosphor powder layer absorbs) understand some and incide on the first speculum 330, which will be reflected And can not export, in order to make the reflection loss farthest reduce, it is necessary to by the area design of the first speculum 330 enough to It is small；And at the same time, to ensure that the first speculum 330 can at utmost reflect the exciting light 380 sent from excitation source 310, its face Product again cannot be too small.The consideration therefore size of the first speculum 330 should compromise, and the small light source of etendue is selected as sharp Light emitting source 310.Preferably, excitation source 310 selects laser diode, and the first speculum 330 is sized to just all Reflect all exciting lights from laser diode outgoing.
In order at utmost reduce the first speculum 330 to loss caused by the blocking of output light 390, it is preferable that set First speculum 330 is located at what the light being emitted from collecting lens 350 was formed on the first surface 341 of collimation lens 340 The edge of hot spot scope so that the exciting light 380 that excitation source 310 is sent is after the reflection of the first speculum 330, with as big as possible Incident angles in collecting lens 350, finally with incident angles as big as possible on phosphor powder layer 360.So it is laid out It is advantageous in that, because Lambert cosine distribution will be substantially presented in light distribution of the light in space being emitted from phosphor powder layer 360：In Light intensity at heart normal is most strong, and the bigger local light intensity of angle is weaker, and the first speculum 330 is fixed on from collecting lens 350 The edge for the hot spot scope that the light of outgoing is formed on the first surface 341 of collimation lens 340, can at utmost reduce anti- The luminous intensity that mirror shelters from is penetrated, reduces the loss of output light, so as to improve the efficiency of output light.
The effect of collecting lens 350 is to collect the light exported from phosphor powder layer 360, and reduces its dispersion angle.For reality Light effect is now preferably received, collecting lens 350 should be located at the front of phosphor powder layer 360 and be close to phosphor powder layer.Preferably, Collecting lens 350 is concave-convex lens, its concave surface is such to be advantageous in that towards phosphor powder layer 360：It is emitted from phosphor powder layer 360 Light be incident in concave surface incidence angle it is smaller than the incidence angle for being incident in plane or convex surface, therefore Fresnel reflection loss is small, passes through Rate is higher.In order to realize the effect of light beam convergence, the radius of curvature of its concave surface should be greater than the radius of curvature on convex surface.
Collimation lens 340 is located in the light path of output light 390 and after the collecting lens 350, and it is by from receipts that it, which is acted on, The light that collection lens 350 are emitted carries out collimation outgoing, it has the first surface 341 towards phosphor powder layer 360.In the present embodiment In, which is plane, easily can so be pasted the first reflection 330 on it.In fact, the first reflection Mirror 330 can also be realized by plating reflectance coating in the first surface 341 of collimation lens 340：By other regions that plated film is not required Sheltered from using fixture, only plate reflectance coating in a small regional area.But its shortcomings that, is the low output of plated film, into This is higher.
In the present embodiment, excitation source 310 is fixed relative to the second mirror tilt so that its exciting light being emitted 380 it is oblique be mapped on the first speculum 330 and be reflected off, reflected light pass through collecting lens 350 after be incident to phosphor powder layer 360 On.Phosphor powder layer 360 absorbs exciting light 380, and is partially converted to stimulated light, the stimulated light of conversion and is not inhaled by fluorescent powder The excitation photosynthesis output light 390 utilized is received to export from 360 surface of phosphor powder layer.Wherein, the back side of phosphor powder layer 360 is pasted onto On second speculum 370, the light from the output of the phosphor powder layer back side can be made to be reflected back phosphor powder layer again, it is finally defeated from front surface Go out.The metal substrate of second speculum 370 preferably electroplate, including aluminum substrate, copper base etc., this kind of metal substrate have Suitable hardness, while there is higher thermal conductivity, be conducive to the heat dissipation of phosphor powder layer 360.
In the present embodiment, the first speculum 330 also can be replaced light splitting optical filter, the light splitting optical filter reflected excitation light And stimulated light is transmitted, can be into one thus there is no the loss of the stimulated light caused by stimulated light is blocked by the first speculum 330 Step improves output light efficiency.The first speculum 330 for light splitting optical filter in the case of, can by its area design enough to big, Such as the first surface 341 of collimation lens 340 is completely covered so that each section of output light 390 all must be transmitted through the light splitting Optical filter is emitted.It is divided optical filter reflected excitation light and transmits the characteristic of stimulated light so that only contains stimulated light in output light 390 Component, this is equivalent to play the role of filtering to output light 390；The exciting light being reflected back at the same time has part can be again again Incide on phosphor powder layer 360 and be recycled.
In the present embodiment, phosphor powder layer 360 can be made to share a radiator with excitation source 310, this can simplify whole The heat dissipation design of a system, further reduction system volume, as shown in Figure 3b.Relative to Fig. 3 a, difference lies in will swash Fig. 3 b 310 and second speculum 370 of light emitting source has been fixed on same radiator 320 by heat-conducting medium 321.Heat-conducting medium by High thermal conductivity material is made, and designs an inclined ramp and ensure the emergent light of excitation source 310 relative to collimation lens 340 Inclined light shaft.In fact, the heat-conducting medium 321 is not necessarily, also can be directly by 310 and second speculum 370 of excitation source It is welded on radiator 320.
In the present embodiment, phosphor powder layer 360 can also driven device driving and cycle movement, so can be to avoid Localized fluorescence powder is stimulated and overheats and thermal quenching phenomenon occurs for a long time.Preferably, can coated in one by phosphor powder layer 360 On rotating substrate (substrate can be the second above-mentioned speculum), the substrate is high under the driving of driving device (such as motor) Speed rotation is so as to help fluorescent powder to radiate.
In the present embodiment, phosphor powder layer 360 is also changed to other wavelength conversion material, for example, quanta point material or Fluorescent dye etc., as long as it can absorb exciting light and produce stimulated light, this common knowledge for replacing with those skilled in the art, It should also be included in protection scope of the present invention.
Relative to the prior art, in the present embodiment, the first speculum 330 plays the role of original light-dividing device, But the volume shared by former light-dividing device is eliminated, while excitation source 310 and phosphor powder layer 360 is located at collimation lens 340 Homonymy, the distance between they are also no longer influenced by the limitation of collecting lens and collimation lens, so that whole light-source system Volume greatly reduces.
Second embodiment
In the first embodiment, in order to which the exciting light for being sent excitation source using the first speculum reflexes to fluorescent powder Layer, makes inclined light shaft of its emergent light relative to collimation lens by the way that excitation source inclination is fixed；And in the present embodiment, Excitation source is vertically fixed all the time, its emergent light relative to collimation lens optical axis keeping parallelism.
Fig. 4 a are the first structure diagram of the light-source system of the present embodiment.In fig.4, light-source system includes excitation Light source 410, radiator 420, the first speculum 430, prism 431, collimation lens 440, collecting lens 450, phosphor powder layer 460, the second speculum 470.Wherein, collimation lens 440 is planoconvex spotlight, and the first surface 441 towards phosphor powder layer 460 is flat Face, excitation source 410 and phosphor powder layer 460 are arranged on the homonymy of first surface 441, and 410 and second speculum of excitation source 470 are fixed on same radiator 420.First speculum 430 is fixed on the first surface 441, and is located at from collection In the range of the hot spot that the light that lens 450 are emitted is formed on the first surface 441.Collecting lens 450 is located at collimation lens 440 Between phosphor powder layer 460 and in close proximity to phosphor powder layer 460.
The present embodiment relative to first embodiment difference lies in：Excitation source 410 is vertically fixed on radiator 420 On, in order to enable 480 oblique incidence of exciting light that excitation source 410 is emitted to the first speculum 430, in excitation source 410 And first be provided with a prism 431 between speculum, as shown in fig. 4 a.Wherein, prism 431 is located at the outgoing of exciting light 480 In light path, it is that deflection exciting light 480 can incide the first speculum 430 that it, which is acted on,.It will be understood by those skilled in the art that only It can realize that the optical element of optical path-deflecting can all be met the requirements, including lens, speculum etc., the replacement of this optical element Should be within protection scope of the present invention.The advantages of this structure is that excitation source can be vertically fixed on radiator, peace Dress is more convenient, and radiator processing is easier, and cost is lower.But shortcoming is that need to increase extra optical element to realize exciting light Deflection, the fixation of the deflecting optical element and adjustment can all make light-source system more complicated.
In order to realize the right angle setting of excitation source and be not required extra optical element to deflect exciting light, may be used also First mirror tilt is fixed, makes the normal of the first speculum relative to the inclined light shaft of collimation lens, as shown in Figure 4 b.Figure Difference lies in collimation lens 440 is concave-convex lens to 4b and Fig. 4 a, and the first surface 441 towards phosphor powder layer 460 is concave surface. First speculum 430 is fixed on the first surface 441, and positioned at the light being emitted from collecting lens 450 in the first surface 441 On in the range of the hot spot that is formed.In the present embodiment, since the first surface 441 of collimation lens 440 is processed to concave surface, this Sample, when the first speculum 430 is pasted onto the first surface 441 of collimation lens 440, its normal is relative to collimation lens 440 Optical axis just has certain inclination, which just can reflex to phosphor powder layer by the exciting light 480 being emitted vertically upward 460.The shortcomings that this structure is：The first surface 441 of limitation and collimation lens 440 to the position of excitation source 410 The requirement of curvature is more stringent, ensures the exciting light 480 transmitted vertically upward from the outgoing of excitation source 410 through the first speculum Can just it be incided on phosphor powder layer 460 after 430 reflection.In addition, relative to light-source system above, this light-source system structure It is required that the size of collimation lens 440 is sufficiently large, and the distance between 410 and second speculum 470 of excitation source is sufficiently small, to protect Card can be incided in collimation lens 440 from the exciting light 480 that excitation source 410 is emitted vertically upward.
Another kind realizes the vertically arranged structure of excitation source as illustrated in fig. 4 c.In Fig. 4 c, collimation lens 440 is still Planoconvex spotlight, the first surface 441 towards phosphor powder layer 460 are plane, but the difference of it and Fig. 4 a are：This first Correspond to the incident place of exciting light 480 on surface 441 and be equipped with a groove 442, which has an inclined inner surface, and first Speculum 430, which is just being integrally fixed on its inclined inner surface, forms certain inclination angle, which can be by incidence vertically upward Exciting light 480 reflexes to phosphor powder layer 460.This light-source system also requires that the size of collimation lens 440 is sufficiently large, and exciting light The distance between 410 and second speculum 470 of source is sufficiently small, to ensure the exciting light being emitted vertically upward from excitation source 410 480 can incide in collimation lens 440.
In the present embodiment, phosphor powder layer 460 equally can be complete with remains stationary or movement, this change and first embodiment Exactly the same, so it will not be repeated.
The present embodiment is relative to the advantages of first embodiment：Excitation source can be vertically mounted on radiator, light Source layout Founder is more conducive to the reduction of volume.Excitation source can also share a radiator with phosphor powder layer so that dissipate The design of thermal and the fixation of excitation source are simpler.
3rd embodiment
Fig. 5 is the structure diagram of the 3rd embodiment of the light-source system of the present invention.In the present embodiment with first embodiment Difference lies in：Excitation source in first embodiment has been replaced by excitation source group, which includes multiple independences Excitation source, be respectively arranged at around collimation lens 540.It is corresponding, should there are first speculum group 530 First speculum group 530 is by multiple speculum groups into and excitation source included in the number of speculum and excitation source group Number it is identical, ensure that each excitation source corresponds to a speculum, which can send its corresponding excitation source Exciting light 580 reflex on phosphor powder layer 560.By the position for separately designing each speculum 530, it is ensured that make all sharp The exciting light 580 that light emitting source is sent all is reflected onto the same position of phosphor powder layer 560, so as to improve unit area to greatest extent The brightness of fluorescent powder.
When speculum included in the first speculum group 530 is more, all speculums can be linked to be to an entirety, from And form an axisymmetric catoptric arrangement.The catoptric arrangement can be located at the edge or center of collimation lens first surface.Though Embodiment before so is all that the first speculum is fixed on to the surrounding of collimation lens first surface, actually the first speculum The center of collimation lens can be fixed on, as shown in Figure 5.In the structure shown in Fig. 5, collimation lens 540 is planoconvex spotlight, court It is plane to the first surface 541 of phosphor powder layer 560, has a conic convex in the central design of the plane, it is convex in the circular cone The surface plating reflectance coating risen forms central reflective structure.The central reflective structure 530 can by from the exciting light 580 of surrounding incidence to Under reflex to phosphor powder layer 560.Certainly, the light being emitted from phosphor powder layer 560 also has part by the institute of central reflective structure 530 Block and can not be emitted, but as long as the area of the catoptric arrangement 530 than collecting lens 550 emergent light in collimation lens 540 The facula area formed on first surface 541 is much smaller, and the loss of output light caused by it can ignore.This one Bodyization designs, and not only eliminates the inconvenience for fixing the first speculum, but also make the fixed position of excitation source more flexible：Due to anti- Penetrate the circumference symmetry of structure 530, it is not necessary to consider further that excitation source entering on the circumferencial direction using collimation lens optical axis as axis Firing angle.
Relative to first embodiment, advantage of this embodiment is that：Due to being provided with the excitation of multiple excitation source compositions Light source group, can further lift light-source brightness, meanwhile, the first speculum is arranged to the catoptric arrangement of an entirety, makes excitation The fixed position of light source is more flexible, and whole light-source system structure is more compact compact.
It is appreciated that the extension of the present embodiment can also be used in second embodiment, and have same beneficial effect, so Also should be within protection scope of the present invention
Fourth embodiment
Fig. 6 a are the structure diagram of the fourth embodiment of the light-source system of the present invention.The present embodiment is implemented relative to first Example difference lies in：Phosphor powder layer 660 has opposite first surface 661 and second surface 662, is set on second surface 662 There is the second speculum 671, the second excitation source 670 is provided with further below in second speculum 671.Second reflection Mirror 671 can transmit the second exciting light of the second excitation source 670 outgoing, and the stimulated light that reflected fluorescent light bisque 660 is sent.This Sample, the first exciting light 680 of the first excitation source 610 outgoing is reflected by the first speculum 630, then through collecting lens 650 are incident to phosphor powder layer, the second exciting light warp of the second excitation source 670 outgoing from the first surface 661 of phosphor powder layer 660 Phosphor powder layer is incident to from the second surface 662 of phosphor powder layer 660 after the transmission of second speculum 671, so phosphor powder layer 660 Two surfaces will be excited luminous at the same time.Simultaneously as the stimulated light of the energy reflected fluorescent light powder outgoing of the second speculum 671, so Final stimulated light will be only emitted from the upper surface 661 of phosphor powder layer 660.
Preferably, the first excitation source 610 in the present embodiment is set to laser diode, the second excitation source 670 is set For laser diode or LED, phosphor powder layer 660 is applied directly to the laser diode or the surface of LED, this can further be saved The presence of second speculum 671, as shown in Figure 6 b.In figure 6b, the laser diode or LED as the second excitation source have one A active area 671, active area 671 are below substrates 672, and a minute surface 673 can be formed between active area 671 and substrate 672, The minute surface 673 just act as the function of the second speculum in Fig. 6 a, for will go out from the second surface 662 of phosphor powder layer 660 The first surface 661 that the light reflection penetrated returns phosphor powder layer 660 is emitted, so that all light are all from the first table of phosphor powder layer 660 Face 661 exports.
In the present embodiment, it is emitted from the first exciting light of the first excitation source 610 outgoing and from the second excitation source 670 The optical wavelength of the second exciting light may be the same or different.When the first excitation wavelength and the second excitation wavelength are different When, a light splitting optical filter further can be set in the second surface 662 of phosphor powder layer 660, which reflects the first exciting light And stimulated light, while transmit the second exciting light.
In the present embodiment, phosphor powder layer may be configured as static or movement, and the first excitation source and the second excitation source also may be used A radiator is shared to carry out heat dissipation design, equally there is the beneficial effect identical with preceding embodiment.
Relative to embodiment above, carry out excitated fluorescent powder from the two sides of phosphor powder layer at the same time in the present embodiment, relatively In the situation of single side excitated fluorescent powder, the luminous intensity of unit area fluorescent powder is further increased, thus makes brightness output Higher.
In above example, although being all that the first speculum is fixed on the first surface of collimation lens, in fact, The speculum can be made to leave surface a certain distance of collimation lens to fix, will not equally change the body of whole light-source system Product, simply needs to increase extra fixing device, effect is first-class not as being directly anchored to collimation lens.
The foregoing is merely the embodiment of the present invention, is not intended to limit the scope of the invention, every to utilize this hair The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made, is directly or indirectly used in other relevant skills Art field, is included within the scope of the present invention.

Claims (12)

  1. A kind of 1. light-source system, it is characterised in that including：
    First excitation source, for being emitted the first exciting light；
    Wavelength conversion layer, including opposite first surface and second surface, the wavelength conversion layer are used to absorb the first exciting light To be emitted stimulated light, the first surface is used to receiving the first exciting light, and by the stimulated light or the first exciting light with by The mixed light outgoing of laser；
    Second speculum, positioned at the second surface of the wavelength conversion layer；
    First excitation source and second speculum share same radiator.
  2. 2. light-source system according to claim 1, it is characterised in that including the first speculum, for reflecting described first First exciting light of excitation source outgoing, the first surface of the wavelength conversion layer are used to receive the first speculum reflection First exciting light.
  3. 3. light-source system according to claim 2, it is characterised in that first speculum is light splitting optical filter, described It is divided the stimulated light that optical filter reflects the first exciting light that the first excitation source produces and the generation of transmission peak wavelength conversion layer.
  4. 4. according to light-source system according to any one of claims 1 to 3, it is characterised in that first excitation source is opposite Fixed in second mirror tilt.
  5. 5. the light-source system according to Claims 2 or 3, it is characterised in that first excitation source is vertically fixed on scattered In thermal, make first exciting light parallel relative to the centre normal of wavelength conversion layer.
  6. 6. light-source system according to claim 5, it is characterised in that including deflecting optical element, positioned at the first exciting light Emitting light path in, the deflecting optical element make the first exciting light tilt.
  7. 7. light-source system according to claim 5, it is characterised in that the normal of the first speculum is relative to wavelength conversion layer Centre normal tilt.
  8. 8. the light-source system according to Claims 2 or 3, it is characterised in that first excitation source is the first exciting light Source group, first speculum are the first speculum group, excitation source in the first excitation source group and the first speculum group and Speculum corresponds.
  9. 9. light-source system according to claim 8, it is characterised in that：First speculum is connected to form axial symmetry Structure, is fixed on surrounding or the center of collimation lens first surface.
  10. A kind of 10. light-source system, it is characterised in that including：
    First excitation source, for being emitted the first exciting light；
    Second excitation source, for being emitted the second exciting light；
    Wavelength conversion layer, including opposite first surface and second surface, the wavelength conversion layer are used to absorb the first exciting light To be emitted stimulated light, the first surface is used to receiving the first exciting light, and by the stimulated light or the first exciting light with by The mixed light outgoing of laser；The second surface is used to receive the second exciting light, and makes the wavelength conversion layer by the second excitation Light excites；
    First excitation source and second excitation source share a radiator.
  11. 11. light-source system according to claim 10, it is characterised in that first exciting light and second exciting light Wavelength is different, and the light-source system includes light splitting optical filter, positioned at the second surface of the wavelength conversion layer, the light splitting optical filter For reflecting first exciting light and stimulated light, and transmit second exciting light.
  12. 12. a kind of optical projection system, it is characterised in that including the light-source system any one of claim 1 to 11.
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