CN103162239A - Light-emitting diode (LED) light source coupler - Google Patents
Light-emitting diode (LED) light source coupler Download PDFInfo
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- CN103162239A CN103162239A CN2011104086629A CN201110408662A CN103162239A CN 103162239 A CN103162239 A CN 103162239A CN 2011104086629 A CN2011104086629 A CN 2011104086629A CN 201110408662 A CN201110408662 A CN 201110408662A CN 103162239 A CN103162239 A CN 103162239A
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Abstract
The invention discloses a light-emitting diode (LED) light source coupler which is provided with a light source emit-in end face and a light source emit-out end face. The emit-in end face is matched with an LED light source lighting face in shape. The emit-out end face is in a rectangular shape or a circular shape or a polygon shape. The LED light source coupler has the advantages that the emit-in end face which is consistent with the LED lighting face is used, light leakage rate is lowered, the emit-out end face is in a rectangular shape or a circular shape or a polygon shape and can be conveniently matched with various follow-up devices such as optical fibers or directly emit light source, the coupler is low in cost, small in size, high in energy coupling efficiency and good in light evenness.
Description
Technical field
The present invention relates to the LED lighting device, particularly relate to a kind of for LED light source conduction LED light source coupler.
Background technology
In order to reduce energy consumption, to improve security, and adapt to the trend of instrument miniaturization, at present, the high-brightness LED light source that LED light source, especially face are luminous is progressively replacing high energy consumption, short-life light sources such as traditional halogen tungsten lamp, xenon lamp, obtains a wide range of applications.The high-brightness LED light source has short, the advantage such as brightness is high, energy consumption is low, volume is little, the life-span is long, security is high start-up time, can overcome the many bottlenecks that face in present Instrument Development, but as the face illuminating source, filament light-emitting with conventional light source, luminous the comparing of gas discharge has many different characteristics, embodies a concentrated expression of the aspects such as Energy Coupling efficient is not high, the light uniformity is poor.
The current technology that generally adopts is to adopt optical transmission medium and high-brightness LED light source luminescent face close contact, realize the light energy coupled method, but because LED light source is that lambert's body is luminous, in the 180o angle, the light outgoing is arranged, therefore Energy Coupling efficient is very low, as shown in Figure 1.
Also having a kind of method that generally adopts is to adopt the collector lens group to carry out optically-coupled, as shown in Figure 2, the light that high-brightness LED sends, at first pass through the optically focused of collector lens group, hot spot is focused on the incident end face of optical transmission medium, thereby realize higher Energy Coupling efficient, but the set of lenses that this method has adopted a plurality of eyeglasses to form, greatly increased cost, and volume ratio is larger, is difficult to meet the requirement of instrument miniaturization.
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide that a kind of low cost, small size, Energy Coupling efficient are high, the LED light source coupler of light good evenness.
For achieving the above object, technical scheme of the present invention is: a kind of LED light source coupler, described LED light source coupler has light source incident end face and light source outgoing end face, described incident end face and LED light source light-emitting area form fit, and described outgoing end face is rectangle, circle or polygon.
Preferably, described incident end face size is less than the outgoing face size.
Preferably, described LED light source coupler integral body is tapered.
Preferably, any surface finish of described LED light source coupler is level and smooth.
Preferably, described LED light source coupler is any one or several combination in integrating rod, reflector and set of lenses.
Preferably, the incident end face of described LED light source coupler is rectangle, and described outgoing end face is rectangle or circle.
Preferably, described LED light source coupler is divided into incident section and outgoing section, and described outgoing section is rectangular column or cylinder, and described incident section is progressively seamlessly transitted to the outgoing section by incident end face.
Preferably, described LED light source coupler is divided into incident section and outgoing section, the cross section of described outgoing section near incident Duan Yiduan to outgoing end face one end progressively rectangular column, circular cone post or the polygon cone post of downsizing smoothly, described incident section is progressively seamlessly transitted to the outgoing section by incident end face.
Preferably, described LED light source coupler is divided into incident section and outgoing section, rectangular column, circular cone post or the polygon cone post of the cross section of described outgoing section from progressively smoothly amplifying to outgoing end face one end near incident Duan Yiduan, described incident section is rectangular column, cylinder or polygon post, and the cross section of locating that its cross section is adjacent with the incident section with the outgoing section is consistent.
A kind of LED light source coupler, described LED light source coupler is provided with a hollow cavity, the shape that is shaped as claim 5, claim 6, claim 7, claim 8 or LED light source coupler claimed in claim 9 of described hollow cavity envelope.
Adopt the beneficial effect of the technical program to be: to adopt the incident end face consistent with the LED light-emitting area, reduced the light leak rate, the outgoing end face is rectangle, circle or polygon, can mate with various follow-up equipments such as optical fiber easily, or direct outgoing light source, this coupler low cost, small size, Energy Coupling efficient are high, the light good evenness.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that in prior art, optical transmission medium is direct and the high-brightness LED light source is coupled;
Fig. 2 is the schematic diagram that in prior art, the coupled lens group realizes high-brightness LED light source and optical transmission medium coupling;
Fig. 3 is the structural representation of LED light source coupler embodiment 1 of the present invention;
Fig. 4 is the structural representation of LED light source coupler embodiment 2 of the present invention;
Fig. 5 is the structural representation of LED light source coupler embodiment 3 of the present invention;
Fig. 6 is the structural representation of LED light source coupler embodiment 4 of the present invention;
Fig. 7 is the structural representation of LED light source coupler embodiment 5 of the present invention;
Fig. 8 is the structural representation of LED light source coupler embodiment 6 of the present invention;
Fig. 9 is the structural representation of LED light source coupler embodiment 7 of the present invention;
Figure 10 is the structural representation of LED light source coupler embodiment 8 of the present invention;
Figure 11 is the structural representation of LED light source coupler embodiment 9 of the present invention.
The main element description of symbols:
1: the high-brightness LED module;
The 2:LED luminescence chip;
3: the incident section of photo-coupler;
3 ': the incident section of photo-coupler;
31: the square incident end face of photo-coupler;
32: the circular outgoing end face of photo-coupler;
4: the outgoing section of photo-coupler;
4 ': the outgoing section of photo-coupler;
5: the location-plate of photo-coupler;
6: the broadband highly reflecting films;
7: optical transmission medium
8: the coupled lens group
The specific embodiment:
Below by embodiment, and by reference to the accompanying drawings, seven kinds of technical schemes of the present invention are specifically described.
A kind of LED light source coupler, have light source incident end face 31 and light source outgoing end face 32, described incident end face 31 and LED light source light-emitting area form fit, here adopt and the consistent rectangle of common LED light source chip light-emitting area, described outgoing end face 32 also is rectangle (also can adopt as required circle or polygon, such as regular pentagon, regular hexagon or rectangle four jiaos fall rectilinear angle or the polygon of small round corner of falling).
And described incident end face 31 sizes are less than the size of outgoing end face 32, and the described LED light source coupler of the present embodiment integral body is tapered, and its any surface finish is level and smooth.
Fig. 3 has showed the structural representation that the present embodiment carries out coupling scheme one at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field, the light that wherein sends from the chip 2 of high-brightness LED module 1, at first be coupled to the pyramidal structure part 3 of photo-coupler, the material of this pyramidal structure is the optical glass of high permeability in visible-range, plastics or other high permeability material, this pyramidal structure incident end face 31 is rectangle or other shape, its size take near dimension of light source as excellent, outgoing end face 32 is rectangle or circle, its size is to mate as excellent with the optical transmission medium incident end face.Its incident end size is less than the exit end size, and its working face is outer surface, requires smooth surface, highly polished, to improve total reflection efficient, light is the process multiple total reflection in pyramidal structure, make the light that sends from a plurality of chips carry out even mixing, and light angle is greatly reduced.The inner surface of location-plate 5 plates broadband high-reflecting film 6 at visible light wave range, the effect of broadband high-reflecting film is to prevent that the part that fixture contacts with photo-coupler from forming light leak, optical transmission medium 7 is the fiber waveguide devices such as optical fiber, with the exit facet of photo-coupler near contacting, thereby will enter optical fiber from the Energy Coupling of photo-coupler outgoing, be thrown light in required zone.
In the present embodiment, described LED light source coupler is divided into incident section 3 and outgoing section 4, and described outgoing section 4 is rectangular column, and described incident section 3 is progressively smoothly amplified to outgoing section 4 by incident end face 31.
Fig. 4 has showed the structural representation that the present embodiment carries out coupling scheme two at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field, the light that wherein sends from the chip 2 of high-brightness LED module 1, at first be coupled to the pyramidal structure part (being incident section 3) of photo-coupler, the material of this pyramidal structure is the optical glass of high permeability in visible-range, plastics or other high permeability material, this pyramidal structure incident end face 31 is rectangle, its size take near dimension of light source as excellent, outgoing end face 32 is rectangle, its size is to mate as excellent with the optical transmission medium incident end face.Its incident end face 31 sizes are less than outgoing end face 32 sizes, light is the process multiple total reflection in pyramidal structure, make the light that sends from a plurality of chips carry out even mixing, and light angle greatly reduced, the optically-coupled process in this stage and the coupling process of scheme one are basic identical.light after overcompression enters the rectangle part outgoing section 4 of photo-coupler, pyramidal structure incident section 3 and the rectangular configuration outgoing section 4 of photo-coupler all adopt visible light wave range high permeability material, the Main Function of rectangular configuration outgoing section 4 is that a photo-coupler provides a stationary plane easily, the inner surface of location-plate 5 plates broadband high-reflecting film 6 at visible light wave range, the effect of broadband high-reflecting film 6 is to prevent that the part that fixture contacts with photo-coupler from forming light leak, optical transmission medium 7 is the fiber waveguide devices such as optical fiber, with the outgoing end face 41 of photo-coupler near contacting, thereby will enter optical fiber from the Energy Coupling of photo-coupler outgoing, thrown light in required zone.
Described LED light source coupler is divided into incident section 3 and outgoing section 4, the rectangular column (also can as required select circular cone post or polygon cone post) of the cross section of described outgoing section 4 from progressively smoothly amplifying to outgoing end face 32 1 ends near incident section 3 one ends, described incident section 3 is rectangular column (also can select as required cylinder or polygon post), and the cross section of locating that its cross section is adjacent with incident section 3 with outgoing section 4 is consistent.
Fig. 5 has showed the structural representation that the present embodiment carries out coupling scheme three at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field, being wherein photo-coupler with the main distinction of embodiment 2, incident section 3 is rectangular column, and the rectangle that outgoing section 4 is progressively amplified for cross section cone post, this structure is identical in essence with embodiment 1, Energy Coupling efficient is suitable, be mainly the close high-brightness LED module 1 in location-plate 5 positions of LMDS Light Coupled Device, changed the method for clamping of fixture.
all the other are identical with embodiment 2 for the present embodiment, Fig. 6 has showed the structural representation that the present embodiment carries out coupling scheme four at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field, wherein with the main distinction of the embodiment 2 square structure outgoing section 4 that is photo-coupler be deformed into cylindrical structural outgoing section 4 ', cylindrical structural outgoing section 4 ' all adopt visible light wave range high permeability material with tapering part incident section 3, light circulation way therein is identical with embodiment 1, cylindrical structural outgoing section 4 ' exit facet 32 sizes and the plane of incidence size of optical transmission medium 7 coupling.In the present embodiment, location-plate 5 is loop configuration, the highly reflecting films 6 of its inner surface plating visible light wave range, by the transparent medium such as silica gel and cylindrical structural outgoing section 4 ' sidewall contact, position, the part that highly reflecting films 6 assurance photo-couplers contact with location-plate 5 is light leak not.The plane of incidence of optical transmission medium 7 and the exit facet of photo-coupler 32 be near contacting, thereby will enter optical fiber from the Energy Coupling of photo-coupler outgoing, thrown light in required zone.
A kind of LED light source coupler, described LED light source coupler is provided with a hollow cavity, the shape that is shaped as the described LED light source coupler of embodiment 1 of described hollow cavity envelope.
Fig. 7 has showed the structural representation of the hollow photo-coupler scheme one that the present embodiment is coupled at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field.this structure has adopted hollow photo-coupler 3, the photo-coupler inner surface is working face, require surface smoothing, highly polished, and plating visible light wave range high-reflecting film 6, light from high-brightness LED module 1 chip 2 after outgoing, be coupled to photo-coupler 3, optical fiber is to transmit by the reflection of high-reflecting film in photo-coupler, rather than in embodiment 1 and embodiment 2, light carries out in photo-coupler that total reflection transmits, location-plate 5 in this embodiment is done orthogonal or other structure, adopt special fixture to carry out clamping, transmit according to the mode identical with embodiment 2 with embodiment 1 from the light of photo-coupler outgoing.
A kind of LED light source coupler, described LED light source coupler is provided with a hollow cavity, the shape that is shaped as the described LED light source coupler of embodiment 2 of described hollow cavity envelope.
Fig. 8 has showed the structural representation of the hollow photo-coupler scheme two that the present embodiment is coupled at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field.This scheme and embodiment 5 have all adopted the structure of hollow photo-coupler, and the photo-coupler inner surface is working face, requires surface smoothing, and is highly polished, plating visible light wave range high-reflecting film 6.The difference of the present embodiment and embodiment 5 is the exit end at embodiment 5 tapering parts, increased by a segment structure, make its internal cavity structure be divided into incident section 3 and outgoing section 4, outgoing section 4 shape of cross sections are rectangle (can select as required circle), mating as excellent with the optical transmission medium plane of incidence.Outgoing section 4 is connected to an integral body (or removably connecting) with location-plate 5, has facilitated the location of photo-coupler.Light is from the chip 2 of high-brightness LED module 1 after outgoing, be coupled to photo-coupler, light is the reflection by high-reflecting film in photo-coupler, transmit in the mode identical with embodiment 5 along optical axis, outgoing end face 32 at photo-coupler, the light beam that angle is greatly reduced is coupled into optical transmission medium 7, thereby realizes the illumination to desired zone.
A kind of LED light source coupler, described LED light source coupler is provided with a hollow cavity, the shape that is shaped as the described LED light source coupler of embodiment 4 of described hollow cavity envelope.
Fig. 9 has showed the structural representation of the hollow photo-coupler scheme three that the present embodiment is coupled at high-brightness LED light source and the optical transmission medium of a kind of compact of lighting field.This scheme and embodiment 5 have all adopted the structure of hollow photo-coupler, and the photo-coupler material selection is easy to realize by polishing the material of best bright finish, and inner surface is working face, requires surface smoothing, and is highly polished.Photo-coupler comprise rectangular base 3 ', its inner surface is four planes of cutting sth. askew, four faces surround the structure of taper, plated surface visible light wave range high-reflecting film 6, rectangular base 3 ' the bottom surface boss is arranged, form location-plate 5, location-plate bonds by silica gel or other method and high-brightness LED module.Structure 4 is cylindrical (or rectangular column, polygon cylinder), its size is to mate as excellent with the optical transmission medium plane of incidence, the exit end 32 of photo-coupler and optical transmission medium 7 be near contacting, thereby realize the effect of the angle compression identical with above embodiment, even light and raising coupling efficiency.
This embodiment is basic identical with embodiment 2, the cross section of its incident section 3 and outgoing section 4 is all rectangle, Figure 10 adopts the structural representation of the solid light coupler of rectangle exit end in embodiment 2, the pyramidal structure 3 that this figure has obviously indicated photo-coupler is made of four ladder plane of cutting sth. askew, light is through pyramidal structure, shooting angle has obtained compression significantly, what be connected with pyramidal structure is rectangular configuration outgoing section 4, this structure is rectangular shape, for location-plate provides locating surface easily.This photo-coupler structure also has the effect of obvious even light except improving coupling efficiency, can significantly improve the emergent light uniformity.
Embodiment 9,
The present embodiment is substantially the same manner as Example 4, difference is, its incident section 3 is cut sth. askew on four faces for conical cylinder, form a rectangle at incident end face 31, Figure 11 adopts the structural representation of the solid light coupler of cylindrical exit end in embodiment 4, the pyramidal structure 3 that this figure has obviously indicated photo-coupler is made of four planes of cutting sth. askew, light is through pyramidal structure, shooting angle has obtained compression significantly, photo-coupler also has the effect of even light simultaneously, can significantly improve the emergent light uniformity.
Above-described is only the preferred embodiment of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (10)
1. a LED light source coupler, is characterized in that, described LED light source coupler has light source incident end face and light source outgoing end face, described incident end face and LED light source light-emitting area form fit, and described outgoing end face is rectangle, circle or polygon.
2. LED light source coupler according to claim 1, is characterized in that, described incident end face size is less than the outgoing face size.
3. LED light source coupler according to claim 2, is characterized in that, described LED light source coupler integral body is tapered.
4. according to claim 1 to 3 arbitrary described LED light source couplers, it is characterized in that, any surface finish of described LED light source coupler is level and smooth.
5. according to claim 1 to 3 arbitrary described LED light source couplers, it is characterized in that, described LED light source coupler is any one or several combination in integrating rod, reflector and set of lenses.
6. according to claim 1 to 3 arbitrary described LED light source couplers, it is characterized in that, the incident end face of described LED light source coupler is rectangle, and described outgoing end face is rectangle or circle.
7. according to claim 1 to 3 arbitrary described LED light source couplers, it is characterized in that, described LED light source coupler is divided into incident section and outgoing section, and described outgoing section is rectangular column or cylinder, and described incident section is progressively seamlessly transitted to the outgoing section by incident end face.
8. according to claim 1 to 3 arbitrary described LED light source couplers, it is characterized in that, described LED light source coupler is divided into incident section and outgoing section, the cross section of described outgoing section near incident Duan Yiduan to outgoing end face one end progressively rectangular column, circular cone post or the polygon cone post of downsizing smoothly, described incident section is progressively seamlessly transitted to the outgoing section by incident end face.
9. according to claim 1 to 3 arbitrary described LED light source couplers, it is characterized in that, described LED light source coupler is divided into incident section and outgoing section, rectangular column, circular cone post or the polygon cone post of the cross section of described outgoing section from progressively smoothly amplifying to outgoing end face one end near incident Duan Yiduan, described incident section is rectangular column, cylinder or polygon post, and the cross section of locating that its cross section is adjacent with the incident section with the outgoing section is consistent.
10. LED light source coupler, it is characterized in that, described LED light source coupler is provided with a hollow cavity, the shape that is shaped as claim 5, claim 6, claim 7, claim 8 or LED light source coupler claimed in claim 9 of described hollow cavity envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104086629A CN103162239A (en) | 2011-12-09 | 2011-12-09 | Light-emitting diode (LED) light source coupler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104086629A CN103162239A (en) | 2011-12-09 | 2011-12-09 | Light-emitting diode (LED) light source coupler |
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| CN103162239A true CN103162239A (en) | 2013-06-19 |
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| CN2011104086629A Pending CN103162239A (en) | 2011-12-09 | 2011-12-09 | Light-emitting diode (LED) light source coupler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103424387A (en) * | 2013-06-20 | 2013-12-04 | 中国科学院苏州生物医学工程技术研究所 | Fluorescence spectrum detection device for pesticide residue |
| CN105240713A (en) * | 2015-11-06 | 2016-01-13 | 东莞市线光环保科技有限公司 | Intelligent type line light system |
| CN109240046A (en) * | 2018-10-26 | 2019-01-18 | 洪小苗 | A kind of direct write exposure machine LED illumination System |
| CN111386483A (en) * | 2017-11-29 | 2020-07-07 | 住友电气工业株式会社 | Method for manufacturing an optical connector |
| CN112856272A (en) * | 2019-11-12 | 2021-05-28 | 深圳市绎立锐光科技开发有限公司 | Dodging element, light source system and lighting equipment |
| WO2022116879A1 (en) * | 2020-12-02 | 2022-06-09 | 深圳光峰科技股份有限公司 | Led light source structure and projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20130619 |
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