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CN103499041B - LED coaxial combination optical photo engine and lighting thereof - Google Patents

LED coaxial combination optical photo engine and lighting thereof Download PDF

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Publication number
CN103499041B
CN103499041B CN201310492959.7A CN201310492959A CN103499041B CN 103499041 B CN103499041 B CN 103499041B CN 201310492959 A CN201310492959 A CN 201310492959A CN 103499041 B CN103499041 B CN 103499041B
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led
guide plate
light guide
ring
type
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CN201310492959.7A
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Chinese (zh)
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CN103499041A (en
Inventor
潘定国
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Individual
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Priority to CN201310492959.7A priority Critical patent/CN103499041B/en
Publication of CN103499041A publication Critical patent/CN103499041A/en
Priority to PCT/CN2014/088803 priority patent/WO2015055135A1/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046Tapered light guide, e.g. wedge-shaped light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075Arrangements of multiple light guides
    • G02B6/0078Side-by-side arrangements, e.g. for large area displays
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

This application provides a kind of LED coaxial combination optical photo engine and lighting thereof.The LED coaxial combination optical photo engine of the application, comprising: connect with one another closely at least two donut LED light engine from big to small that arrange, and wherein each donut LED light engine comprises; (i) triangle directional prism annular light guide plate, this light guide plate comprises smooth flat and prism facets, prism facets is provided with multiple concentric ring-type microtrabeculae prism, from the inner periphery of annular light guide plate to excircle, the distance of the section triangle summit distance smooth surface of each ring-type microtrabeculae prism increases progressively gradually, and near the excircle of annular light guide plate, be provided with cannelure, and (ii) LED ring-type light source, this LED ring-type light source is placed in the cannelure of annular light guide plate, and the LED chip comprising PCB and be mounted on equally spacedly on PCB.

Description

LED coaxial combination optical photo engine and lighting thereof
Technical field
The application relates to a kind of LED light engine, particularly relates to a kind of LED coaxial combination optical photo engine and uses the lighting of this LED coaxial combination optical photo engine.
Background technology
Compared to conventional light source, LED illumination has the features such as volume is little, energy-conservation, life-span length, high brightness, environmental protection.At lighting field, the application of LED luminous product is just attract the sight of common people, and LED is as a kind of novel green light source product, and the trend of necessarily future development, 21st century is novel illumination light source epoch of representative by entering with LED.
Be in the PCT international application of PCT/CN2008/001534 the applicant of the application in the application number that on August 26th, 2008 submits to, the plectane lamp disclosing a kind of constant section triangle directional prism circular reflecting plate and be made up of it.This plectane lamp comprises: the circular light guide plate of uiform section triangle microprism; Around the heat radiation frame of light guide plate, form gap between this heat radiation frame and light guide plate and looping light trough; And the circular lamp assembly be flush-mounted in annular light trough, this circular lamp assembly is made up of multiple light emitting diode (LED) paster, resistance and wiring board.The full content of this application, incorporated herein by reference.
Be in the PCT international application of PCT//CN2008/001535 the applicant of the application in the application number that on August 26th, 2008 submits to, disclose a kind of lamp and comprise its sheet light fixture.This sheet lamp comprises: the square light guide plate of uiform section triangle microprism; Around the heat radiation frame of light guide plate, form gap between this heat radiation frame and light guide plate and form strip light trough; And the pencil-shape lamp assembly be flush-mounted in strip light trough, this pencil-shape lamp assembly is made up of multiple light emitting diode (LED) paster, resistance and wiring board.The full content of this application, incorporated herein by reference.
On the basis of above-mentioned two applications, applicant have submitted on April 30th, 2010 the PCT international application that application number is PCT/CN2010/072352, wherein uiform section triangle microprism is circular or square light guide plate is improved to variable cross-section triangle microprism circle or square light guide plate, has better Luminescence Uniformity to make made light fixture.The entire contents of this application, incorporated herein by reference.
After implementing above patent application, applicant finds to be low power LED paster due to application, and the total amount of light radiation lumen that therefore LED light engine exports has limitation.Simultaneously when a design LED lamp product, be also subject to the restriction that some geometry physical quantitys are selected, also must in the face of the standard of various countries and the restriction of various countries' regulation.Therefore, applicant, after the security of balance EN/ICE62471 the photo-biological also various contradiction of comprehensive analysis, creates one realizes high-power illumination optical mentality of designing with low power LED paster.
In addition, applicant also finds that LED light engine plane transmission goes out macroscopic tiny blue light.Due to the technologic reason of LED and the body of LED paster own limitation and fluorescent molecular structure and particle bodily form reason or LED photoproton density own is high or other unknown cause, in LED the original blue photons that excites and fluorescent crystal " head-on collision " thoroughly insufficient, the blue light (here we and say these blue lights unhelpful to human body) of also assorted band not " conversion " in the white light desired by making originally.In the face of the problems referred to above, applicant thinks and must respond in the mechanism of light fixture, not only to handle well the blue light of LED, LED colour temperature, also must handle the colour rendering of LED well, applicant's imagination arranges efficient mechanism and launches to the light improving LED chip in the light path of LED chip institute approach for this reason.
Summary of the invention
The object of the present invention is to provide a kind of LED coaxial combination optical photo engine and use the lighting of this LED coaxial combination optical photo engine, thus realize powerful illumination optical with low power LED paster.
Another object of the present invention is to provide a kind of LED light engine being provided with the distribution of labyrinth type fluorescence coating, thus eliminates the blue light of the not fully conversion that LED light engine plane transmission goes out.
Provide a kind of LED coaxial combination optical photo engine according to an aspect of the present invention, it comprises: connect with one another closely at least two donut LED light engine from big to small that arrange, and wherein each donut LED light engine comprises, (i) triangle directional prism annular light guide plate, described light guide plate comprises smooth flat and prism facets, described prism facets is provided with multiple concentric ring-type microtrabeculae prism, the cross section of each ring-type microtrabeculae prism is triangle, from the inner periphery of described annular light guide plate to excircle, the section triangle summit of each ring-type microtrabeculae prism increases progressively gradually apart from the distance of described smooth surface, the angle that the radial line on the section triangle summit of each ring-type microtrabeculae prism and described smooth surface are formed is less than 45 degree, and near the excircle of described annular light guide plate, be provided with cannelure, and (ii) LED ring-type light source, described LED ring-type light source is placed in the described cannelure of described annular light guide plate, and the LED chip comprising PCB and mount equally spacedly on the pcb.
According to a further aspect in the invention, in above-mentioned LED coaxial combination optical photo engine, the fluorescent material adhesive tape isometric with described PCB is added a cover in the position that PCB corresponds to LED chip, and arranging two with the transmission plane of annular light guide plate near the transmission plane of the incident ray of the reception of annular light guide plate described LED ring-type light source is the toroidal cavity of concentric, the opening of one of them toroidal cavity is arranged on the smooth flat place of annular light guide plate, the opening of another toroidal cavity is arranged on the prism facets place of annular light guide plate, be filled with fluorescent material in this toroidal cavity and fill phosphor powder layer to be formed in labyrinth type.
Beneficial effect of the present invention is, LED coaxial combination optical photo engine of the present invention can realize powerful illumination optical with low power LED paster, and effectively can eliminate the blue light of the not fully conversion that LED light engine plane transmission goes out.
Accompanying drawing explanation
Figure 1A illustrates the sectional view according to LED coaxial combination optical photo engine of the present invention.
Figure 1B is the magnified partial view of light guide plate in Figure 1A.
Fig. 1 C illustrates the floor map of LED according to the present invention combined light engine of the same clan.
Fig. 2 illustrates lambert's type luminous intensity distribution figure.
Fig. 3 illustrates bat type luminous intensity distribution figure.
Fig. 4 illustrates the luminous intensity distribution figure according to LED coaxial combination optical photo engine of the present invention.
Fig. 5 illustrates the vertical street lamp and Ye Shi street lamp that adopt LED coaxial combination optical photo engine of the present invention.
Fig. 6 illustrates the bulkhead lamp capable adopting LED coaxial combination optical photo engine of the present invention.
Fig. 7 and Fig. 8 shows the road lighting coverage diagram adopted according to street lamp of the present invention.
Fig. 9 shows the expanded view of the LED ring-type light source according to improvement of the present invention.
Figure 10 shows the part light guide plate according to improvement of the present invention.
Detailed description of the invention
The present invention aims to provide a kind of LED coaxial combination optical photo engine and uses lighting and the 3D illuminator of this LED coaxial combination optical photo engine, and this LED coaxial combination optical photo engine adopts the mode of LED light engine coaxial radiation superposition to realize.
Figure 1A is the sectional view according to LED coaxial combination optical photo engine of the present invention, and Figure 1B is the magnified partial view of light guide plate in Figure 1A, and Fig. 1 C is the floor map of LED according to the present invention combined light engine of the same clan.
As figs. ia and 1 c show, the LED coaxial combination optical photo engine 100 of the application comprises three donuts 101,102,103 connected with one another closely from big to small, the Ring Width of each annulus is respectively δ 1, δ 2 and δ 3, and they are equal, i.e. δ 1=δ 2=δ 3.Those skilled in the art will appreciate that LED coaxial combination optical photo engine of the present invention is not limited to comprise three donuts, it can comprise the donut of more or less quantity, as two, four, five etc.In addition, LED coaxial combination optical photo engine 100 can comprise framework 104 and interface module 105.
As shown in concrete in Figure 1B, each annulus 101,102,103 comprises a triangle directional prism annular light guide plate, and this light guide plate comprises a smooth flat 111 and a prism facets 112.Prism facets 112 is provided with multiple concentric ring-type microtrabeculae prism, and the cross section of each ring-type microtrabeculae prism is triangle.From the inner periphery of annular light guide plate to excircle, the section triangle summit of each ring-type microtrabeculae prism increases progressively gradually apart from the distance of smooth surface, i.e. light guide plate progressive additive.The angle that the radial line on the section triangle summit of each ring-type microtrabeculae prism and smooth surface are formed is less than 45 degree.A cannelure is provided with, for holding LED ring-type light source 113 near the excircle of each annular light guide plate.In the section triangle of each ring-type microtrabeculae prism away from ring-type light source and receive the light that LED ring-type light source sends while be called light critical edge, this light critical edge becomes a critical angle with the normal of smooth flat, and this critical angle range is from 40 degree to 90 degree.From the inner periphery of annular light guide plate to excircle, the critical angle of this ring-type microtrabeculae prism increases progressively gradually.Such as, Figure 1B illustrates that critical angle is incremented to 70 degree gradually from 50 degree from the inner periphery of annular light guide plate to excircle.
As mentioned above, install LED ring-type light source 113 in the cannelure near the excircle of each annular light guide plate, this LED ring-type light source comprises the PCB121 bending to annular and the LED chip 122 be mounted on equally spacedly on PCB.For each ring-shaped P CB, on it, the LED chip of attachment has certain power, so each annulus is a photo engine with certain critical angle and certain power.When lighting LED ring-type light source in the side of annulus, this annulus defines the ring of light that has certain energy and definite shape distribution curve flux.This determines the power ring of light surely can obtain luminous intensity distribution as shown in Figures 2 and 3, and Fig. 2 is the lambert's type luminous intensity distribution known by us, and Fig. 3 is bat type luminous intensity distribution, certainly can also obtain various different luminous intensity distribution.
Different capacity can be had to these, the LED annulus photo engine of different luminous intensity distribution combines, to form a LED coaxial combination optical photo engine.
Each annulus photo engine respectively holds its power and the characteristic of luminous intensity distribution, and after several annulus photo engines are by coaxial combination, coaxial combination photo engine will show brand-new optical property.A new powerful coaxial combination photo engine is realized below by further illustrating how to be superposed by coaxial radiation by the annulus photo engine of smaller power one by one.
As is shown in fig. 1 c, in coaxial combination photo engine, the width of the optical prism of each photo engine 101,102,103 is equal, i.e. δ 1=δ 2=δ 3.In addition, preferably, the cross sectional shape of the optical prism of each photo engine is also identical.Each photo engine is luminous in side by LED ring-type light source.Suppose the power P 1=25W of the first photo engine 101, the power P 2=15W of the second photo engine 102, and the power P 3=10W of the 3rd photo engine 103.These three photo engines are coaxial with 0, and their power is P1, P2 and P3 respectively, so power P=the P1+P2+P3=50W of coaxial combination photo engine, thus is formed by stacking a high-power engine by three smaller power engines.
Fig. 4 is the luminous intensity distribution figure according to LED coaxial combination optical photo engine of the present invention.To suppose by 3 be all bat type luminous intensity distribution, and photo engine forms a coaxial combination photo engine, can infer that the bat of the luminous intensity distribution figure of new coaxial combination photo engine is certainly than much bigger during an original photo engine.
LED is a light element, is incoherent light, the same with other light, and the light radiation of LED can superpose.Therefore, the combination that can realize the photo engine of different capacity and different luminous intensity distribution according to the needs of different 3d spaces is to demand the luminous intensity distribution of a suitable 3D.
Apply the good effect that LED coaxial combination optical light engine according to the present invention will produce many illuminations.First, LED coaxial combination optical optical engine surface does not have dazzle.Secondly, LED coaxial combination optical photo engine light fixture surface illumination within the scope of 80 ° of angle of releases, uniform-illumination.Finally, pro forma low-power LED (22mA, 0.066W) set is the large-power lamp of a 50W, overcome great power LED cooling difficulty and dazzle shortcomings in design, LED lamp is made really to enter indoor and outdoor lighting, enter reliable practicality, and structurally ensure the security of product.
Have the high-power and advantages such as angle of release is large of throwing light on just because of LED coaxial combination optical photo engine of the present invention, it is particularly useful for street lamp, bulkhead lamp capable etc.
Fig. 5 shows the vertical street lamp and Ye Shi street lamp that adopt LED coaxial combination optical photo engine of the present invention, and wherein the illumination surface of vertical street lamp is parallel with road surface, and illumination surface and the road surface of leaf formula street lamp are angled.Fig. 6 shows the bulkhead lamp capable adopting LED coaxial combination optical photo engine of the present invention.
Fig. 7 and Fig. 8 shows the road lighting coverage diagram adopted according to street lamp of the present invention, and wherein Fig. 7 is top view, and Fig. 8 is side view.
As shown in Figure 7 and Figure 8, install according to vertical street lamp 711 of the present invention at the intermediate isolating band place of two-way car lane 701, install between car lane 701 and bicycle lane 702 according to leaf formula street lamp 712 of the present invention.Dotted line 713 in figure represents the light radiation scope according to vertical street lamp 711 of the present invention and Ye Shi street lamp 712.According to vertical street lamp of the present invention and Ye Shi street lamp, there is high-power and about 80 ° illumination angle of release, therefore, it is possible to realize throwing light on to all standing in all tracks.
Another object of the present invention is to provide a kind of LED light engine being provided with the distribution of labyrinth type fluorescence coating, thus eliminate the blue light of the not fully conversion that LED light engine plane transmission goes out.
Fig. 9 shows the expanded view of the LED ring-type light source according to improvement of the present invention.As shown in Figure 9, LED chip 122 is mounted on PCB121 equally spacedly to form LED ring-type light source.PCB121 corresponds to the mixture that and the isometric fluorescent material adhesive tape 901 of PCB or aluminate, nitrogen (oxygen) compound have been added a cover in the position of LED chip, and this fluorescent material 901 of adding a cover is also shown in Figure 10.
Figure 10 shows the part light guide plate according to improvement of the present invention, and it is a kind of modification of the part light guide plate shown in Figure 1B.Receive LED ring-type light source 113 incident ray light guide plate transmission plane near be provided with two annular cavitys, the face of cylinder of this toroidal cavity and the transmission plane of light guide plate are same axle center, can filling aluminum hydrochlorate, silicate or nitrogen (oxygen) compound in cavity, fill phosphor powder layer 902 to be formed in labyrinth type.Two annular cavity gap thickness are at 0.5mm to 2mm, and two annular cavities are in the same medium of light guide plate.Two openings one of two toroidal cavities are in smooth flat 111 place of light guide plate, and one is in prism facets 112 place.After the light that LED chip 122 on PCB121 sends enters the transmission plane of light guide plate, inherently run into and fill fluorescent material 902 through in two labyrinth types, then entering light guide plate and then enter lighting space through the smooth surface 111 of light guide plate.
According to relevant, along with temperature raises, the emission peak of fluorescent material moves gradually, and emission peak intensity reduces gradually.When temperature is 100 DEG C, emission peak intensity to reduce under normal temperature 94%.After 100 DEG C, emission peak intensity fall strengthens gradually, and during to 300 DEG C, emission peak intensity to be only under normal temperature 38%.
It is comparatively far away that multilayer labyrinth type phosphor powder layer 902 arranged according to the present invention leaves LED chip 122 relatively, therefore has positive effect to the fluorescence conversion promoting LED.
Below the preferred embodiment of the application has been described in detail, but the application is not limited to these embodiments.Should be appreciated that after the description reading the application, those skilled in the art can make various modifications and changes to the application, and these equivalent form of values drop in the application's claims limited range equally.

Claims (9)

1. a LED coaxial combination optical photo engine, is characterized in that, comprising:
Connect with one another closely at least two donut LED light engine from big to small that arrange, and wherein each donut LED light engine comprises;
(i) triangle directional prism annular light guide plate, described light guide plate comprises smooth flat and prism facets, described prism facets is provided with multiple concentric ring-type microtrabeculae prism, the cross section of each ring-type microtrabeculae prism is triangle, from the inner periphery of described annular light guide plate to excircle, the section triangle summit of each ring-type microtrabeculae prism increases progressively gradually apart from the distance of described smooth surface, the angle that the radial line on the section triangle summit of each ring-type microtrabeculae prism and described smooth surface are formed is less than 45 degree, and near the excircle of described annular light guide plate, be provided with cannelure, and
(ii) LED ring-type light source, described LED ring-type light source is placed in the described cannelure of described annular light guide plate, and the LED chip comprising PCB and mount equally spacedly on the pcb;
Near the transmission plane of the incident ray of the reception described LED ring-type light source of described annular light guide plate, wherein arranging two with the transmission plane of described annular light guide plate is the toroidal cavity of concentric, the opening of one of them toroidal cavity is arranged on the described smooth flat place of described annular light guide plate, the opening of another toroidal cavity is arranged on the described prism facets place of described annular light guide plate, and in described toroidal cavity, fill fluorescent material, fill phosphor powder layer to be formed in labyrinth type.
2. LED coaxial combination optical photo engine as claimed in claim 1, it is characterized in that, for each annular light guide plate, in the section triangle of each ring-type microtrabeculae prism away from described LED ring-type light source and receive the light that LED ring-type light source sends while be called light critical edge, described light critical edge becomes a critical angle with the normal of described smooth flat, described critical angle range is from 40 degree to 90 degree, from the inner periphery of described annular light guide plate to excircle, the critical angle of described ring-type microtrabeculae prism increases progressively gradually.
3. LED coaxial combination optical photo engine as claimed in claim 1, it is characterized in that, the width of described at least two donut LED light engine is equal.
4. LED coaxial combination optical photo engine as claimed in claim 1, is characterized in that, each in described at least two donut LED light engine is configured to obtain lambert's type luminous intensity distribution or bat type luminous intensity distribution.
5. LED coaxial combination optical photo engine as claimed in claim 1, it is characterized in that, the LED chip used in described LED ring-type light source is low-power LED chip.
6. LED coaxial combination optical photo engine as claimed in claim 1, is characterized in that, the fluorescent material adhesive tape isometric with described PCB is added a cover in the position corresponding to described LED chip on the pcb.
7. LED coaxial combination optical photo engine as claimed in claim 1, it is characterized in that, described phosphor powder layer comprises aluminate, silicate, nitrogen compound or oxynitrides.
8. LED coaxial combination optical photo engine as claimed in claim 1, it is characterized in that, the gap thickness of described toroidal cavity is at 0.5mm to 2mm.
9. a lighting, is characterized in that, comprises the LED coaxial combination optical photo engine as described in claim 1-8.
CN201310492959.7A 2013-10-18 2013-10-18 LED coaxial combination optical photo engine and lighting thereof Active CN103499041B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310492959.7A CN103499041B (en) 2013-10-18 2013-10-18 LED coaxial combination optical photo engine and lighting thereof
PCT/CN2014/088803 WO2015055135A1 (en) 2013-10-18 2014-10-17 Led coaxially-combined light engine and lighting fixture therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310492959.7A CN103499041B (en) 2013-10-18 2013-10-18 LED coaxial combination optical photo engine and lighting thereof

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CN103499041B true CN103499041B (en) 2015-08-26

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