CN104075236A - Light distribution system and lighting device provided with same - Google Patents
Light distribution system and lighting device provided with same Download PDFInfo
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- CN104075236A CN104075236A CN201310105923.9A CN201310105923A CN104075236A CN 104075236 A CN104075236 A CN 104075236A CN 201310105923 A CN201310105923 A CN 201310105923A CN 104075236 A CN104075236 A CN 104075236A
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- light
- annular
- lens
- distributing system
- hollow bulb
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Abstract
The invention relates to a light distribution system which comprises a lens and a transparent optical portion. The lens comprises an upper surface, a lower surface and an annular light-emitting surface, the lower surface is opposite to the upper surface, the annular light-emitting surface connects the upper surface with the lower surface, and the lens recesses from the lower surface of the same to the direction adjacent to the upper surface to form a first hollow portion used for accommodating light-emitting diode light sources, the lens is provided with a first annular light-incidence surface connected with the lower surface of the lens and corresponding to the first hollow portion and a second annular light-incidence surface connected with the first annular light-incidence surface; the upper surface of the lens extends out to form the transparent optical portion which is provided with a cylindrical light-emitting surface, the optical portion recesses from one side spaced from the lens to form a second hollow portion, and the second hollow portion is inverted-cone shaped. The invention further relates to a lighting device applying the light distribution system. The lighting device is good in shock resistance and light-emitting efficiency.
Description
Technical field
The present invention relates to lighting field, more relate to a kind of light distributing system and adopt the lighting device of this light distributing system.
Background technology
At present, light emitting diode (Light Emitting Diode, LED) with its efficiency high, photochromic pure, energy consumption is low, the life-span is long, the advantage such as pollution-free becomes 21 century one of the most competitive new type light source.Along with improving constantly of LED luminous flux and light efficiency, LED is also more and more extensive in the application of lighting field.Yet the surperficial bright dipping of LED chip is that Lambert (Lambertian) distributes, and cannot directly apply to illuminator, therefore, the LED of usining seems particularly important as the light distributing system design of light source.
Yet in existing practical application, military helicopter airport periphery as light source, and is equipped with simple light distributing system (as Fresnel Lenses) mainly with halogen tungsten lamp.The present inventor's discovery, the shortcoming one with the light fixture existence of this light distributing system is that poor seismic behavior, life-span are short, maintenance cost is high, energy consumption is high; The light extraction efficiency of light fixture is extremely low in addition, and its extensive use is caused to considerable restraint.
Summary of the invention
The object of the present invention is to provide a kind of light distributing system, and a kind of lighting device that adopts this light distributing system, the technical problem existing in order to solve existing airport light distributing system and lighting device.
Described light distributing system comprises:
Lens, these lens comprise a upper surface, a lower surface relative with this upper surface and the annular exiting surface that connects this upper surface and this lower surface, and these lens are recessed to form one for the first hollow bulb of storage light-emitting diode light-source by this lower surface to the direction of adjacent upper surface, these lens are to having a first annular incidence surface being connected with this lower surface by the first hollow bulb, and a second annular incidence surface being connected with this first annular incidence surface; And
The transparent optical department of the Chinese Academy of Sciences being extended out by the upper surface of these lens, this optics portion has a cylindrical exiting surface, and this optics portion forms second hollow bulb by the side direction sunken inside away from these lens, this second hollow bulb is inversed-cone shape, this optics portion is to having a taper seat by the second hollow bulb, the light that this LED source sends respectively by this first, the second annular incidence surface is incident in light distributing system, and by the light of the first annular incidence surface incident by annular exiting surface outgoing, after being reflected by taper seat by the light of the second annular incidence surface incident from cylindrical exiting surface outgoing.
Described lighting device comprises a LED source and a light distributing system.Described light distributing system comprise lens and and the Yi Ge transparent optical department of the Chinese Academy of Sciences, these lens comprise a upper surface, a lower surface relative with this upper surface and the annular exiting surface that connects this upper surface and this lower surface, and these lens are recessed to form one for the first hollow bulb of storage light-emitting diode light-source by this lower surface to the direction of adjacent upper surface, these lens are to having a first annular incidence surface being connected with this lower surface by the first hollow bulb, and a second annular incidence surface being connected with this first annular incidence surface, this optics portion is extended out by the upper surface of these lens, this optics portion has a cylindrical exiting surface, and this optics portion forms second hollow bulb by the side direction sunken inside away from these lens, this second hollow bulb is inversed-cone shape, this optics portion is to having a taper seat by the second hollow bulb, the light that this LED source sends respectively by this first, the second annular incidence surface is incident in light distributing system, and by the light of the first annular incidence surface incident by annular exiting surface outgoing, after being reflected by taper seat by the light of the second annular incidence surface incident from cylindrical exiting surface outgoing.
With respect to prior art, described light distributing system comprises a plurality of optical surfaces, comprise the first annular incidence surface, the second annular incidence surface, annular exiting surface, taper seat, and cylindrical exiting surface, each optical surface is controlled for the light that the LED source of different angles is sent, wherein, the first annular incidence surface and annular exiting surface are mainly used in LED source side light to control (light of 30-90 degree), the second annular incidence surface and taper seat are mainly used in the low-angle light in LED source dead ahead to control (light that is 0-30 degree), the spatially overlapping rear formation of two parts light is useful in the light distributing system of military helicopter airport week cowl lamp, can improve shock resistance and the light extraction efficiency of integral illumination device, meet the light distribution requirements of military helicopter airport week cowl lamp.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the light distributing system that provides of first embodiment of the invention;
Fig. 2 is the top view of light distributing system shown in Fig. 1;
Fig. 3 is the side view of light distributing system shown in Fig. 1;
Fig. 4 is the light path schematic diagram of the lighting device that provides of second embodiment of the invention;
Fig. 5 is the military helicopter airport periphery lamp system structural representation that adopts formation that lighting device configures shown in a plurality of Fig. 4;
Fig. 6 is the airport of military helicopter shown in Fig. 5 periphery lamp system polar coordinate representation distribution curve flux figure;
Fig. 7 is that the airport of military helicopter shown in Fig. 5 periphery lamp system rectangular co-ordinate represents distribution curve flux figure.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
See also Fig. 1 to Fig. 3, first embodiment of the invention provides a kind of light distributing system 100, and it comprises lens 10 and an optics portion 30.In the present embodiment, described light distributing system 100 can adopt polymethyl methacrylate (PMMA, acrylic) to make.In other change embodiment, described light distributing system 100 also can adopt other transparent material, as glass, makes, and is not limited to specific embodiment.
As shown in Figures 2 and 3, the annular exiting surface 15 that these lens 10 comprise a upper surface 11, a lower surface 13 relative with this upper surface 11 and connect this upper surface 11 and this lower surface 13, wherein, upper surface 11 and lower surface 13 are circular flat and are parallel to each other, annular exiting surface 15 is a free form surface, 11 external diameter of this upper surface is less than the external diameter of this lower surface 13, and the external diameter of this annular exiting surface 15 is diminished to upper surface 11 gradually by lower surface 13.In the present embodiment, the external diameter of this lower surface 13 is 33.47mm, and the distance between upper surface 11 and lower surface 13 is 13.93mm.
These lens 10 are recessed to form first hollow bulb 17 by this lower surface 13 to the direction of adjacent upper surface 11, and in concrete enforcement, described the first hollow bulb 17 is for storage light-emitting diode light-source.In addition, 10 pairs, these lens should have a first annular incidence surface 171 being connected with this lower surface 13 and a second annular incidence surface 172 by the first hollow bulb 17.Described the second annular incidence surface 172 is connected with described the first annular incidence surface 171.In the present embodiment, described the first annular incidence surface 171 is a sphere, and described the second annular incidence surface 172 is a free form surface.
This optics portion 30 is extended out by the upper surface 11 of these lens 10, and its shape is roughly cylindrical.Particularly, this optics portion 30 has a cylindrical exiting surface 31, and this optics portion 30 forms second hollow bulb 37 by the side direction sunken inside away from these lens 10, this second hollow bulb 37 is inversed-cone shape, and 30 pairs, this optics portion should have a taper seat 370 by the second hollow bulb 37.In the present embodiment, the external diameter of this optics portion 30 is 14mm.
Please also refer to Fig. 4, second embodiment of the invention also provides a kind of lighting device 200 that adopts above-mentioned light distributing system 100.Described lighting device 200 comprises LED source 300 and described light distributing system 100, and wherein, described LED source 300 is arranged on the first hollow bulb 17 of described lens 10.Described LED source 300 specifically can adopt the Xlamp series high-power LED light source of producing as U.S. CREE company.
Be understandable that, because described light distributing system 100 comprises a plurality of optical surfaces, comprise the first annular incidence surface 171, the second annular incidence surface 172, annular exiting surface 15, taper seat 370, and cylindrical exiting surface 31, each optical surface is controlled for the light that the LED source 300 of different angles is sent, wherein, the first annular incidence surface 171 and annular exiting surface 15 are mainly used in LED source 300 side light to control (the light I of 30-90 degree), particularly, the direction that light I is refracted into lens at the first annular incidence surface 171 (sphere) remains unchanged, from annular exiting surface 15 (free form surface) refraction to lens 10 outsides.The second annular incidence surface 172 and taper seat 370 are mainly used in the LED source 300 low-angle light in dead ahead to control (the light II that is 0-30 degree), particularly, light II becomes directional light after the second annular incidence surface 172 refractions, and the total reflection characteristic by taper seat 370 penetrates optics portion 30 afterwards.Spatially overlapping rear formation of above-mentioned two parts light I, II is useful in the light distributing system 100 of military helicopter airport week cowl lamp, can improve shock resistance and the light extraction efficiency of integral illumination device 300, meets the light distribution requirements of military helicopter airport week cowl lamp.
In the present embodiment, it is luminous that described light distributing system 100 can form omnidirectional, and the elevation angle of light beam peak value is 7-9 degree, (wherein the elevation angle is defined as and horizontal angle) shown in light distribution following table.
| The elevation angle (°) | Light intensity (cd) |
| 3～15 | 40 |
| 15～25 | 15 |
| 45～90 | 5 |
As shown in Figure 5, military helicopter airport periphery lamp system 500 structural representations that its configuration that forms by lighting device 200 shown in a plurality of Fig. 4 of employing.
Described airport periphery lamp system 500 is comprised of four high power light-emitting diode light sources 300 and light distributing system 100, can form distribution curve flux as shown in Figures 6 and 7, meets military helicopter airport week cowl lamp light distribution requirements.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a light distributing system, comprising:
Lens, these lens comprise a upper surface, a lower surface relative with this upper surface and the annular exiting surface that connects this upper surface and this lower surface, and these lens are recessed to form one for the first hollow bulb of storage light-emitting diode light-source by this lower surface to the direction of adjacent upper surface, these lens are to having a first annular incidence surface being connected with this lower surface by the first hollow bulb, and a second annular incidence surface being connected with this first annular incidence surface; And
The transparent optical department of the Chinese Academy of Sciences being extended out by the upper surface of these lens, this optics portion has a cylindrical exiting surface, and this optics portion forms second hollow bulb by the side direction sunken inside away from these lens, this second hollow bulb is inversed-cone shape, this optics portion is to having a taper seat by the second hollow bulb, the light that this LED source sends respectively by this first, the second annular incidence surface is incident in light distributing system, and by the light of the first annular incidence surface incident by annular exiting surface outgoing, after being reflected by taper seat by the light of the second annular incidence surface incident from cylindrical exiting surface outgoing.
2. light distributing system as claimed in claim 1, is characterized in that, described upper surface and lower surface are circular flat and are parallel to each other, and described annular exiting surface is a free form surface.
3. light distributing system as claimed in claim 1, is characterized in that, described the first annular incidence surface is a sphere.
4. light distributing system as claimed in claim 3, is characterized in that, described the second annular incidence surface is a free form surface.
5. light distributing system as claimed in claim 1, is characterized in that, described light distributing system can adopt polymethyl methacrylate to make.
6. a lighting device, comprising:
A LED source;
A light distributing system, described light distributing system comprises a lens Ji Yige transparent optical department of the Chinese Academy of Sciences, these lens comprise a upper surface, a lower surface relative with this upper surface and the annular exiting surface that connects this upper surface and this lower surface, and these lens are recessed to form first hollow bulb of taking in described LED source by this lower surface to the direction of adjacent upper surface, these lens are to having a first annular incidence surface being connected with this lower surface by the first hollow bulb, and a second annular incidence surface being connected with this first annular incidence surface, described optics portion is extended out by the upper surface of these lens, this optics portion has a cylindrical exiting surface, and this optics portion forms second hollow bulb by the side direction sunken inside away from these lens, this second hollow bulb is inversed-cone shape, this optics portion is to having a taper seat by the second hollow bulb, the light that this LED source sends respectively by this first, the second annular incidence surface is incident in light distributing system, and by the light of the first annular incidence surface incident by annular exiting surface outgoing, after being reflected by taper seat by the light of the second annular incidence surface incident from cylindrical exiting surface outgoing.
7. lighting device as claimed in claim 6, is characterized in that, described upper surface and lower surface are circular flat and are parallel to each other, and described annular exiting surface is a free form surface.
8. lighting device as claimed in claim 6, is characterized in that, described the first annular incidence surface is a sphere.
9. lighting device as claimed in claim 8, is characterized in that, described the second annular incidence surface is a free form surface.
10. lighting device as claimed in claim 6, is characterized in that, described light distributing system can adopt polymethyl methacrylate to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105923.9A CN104075236A (en) | 2013-03-28 | 2013-03-28 | Light distribution system and lighting device provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105923.9A CN104075236A (en) | 2013-03-28 | 2013-03-28 | Light distribution system and lighting device provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104075236A true CN104075236A (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310105923.9A Pending CN104075236A (en) | 2013-03-28 | 2013-03-28 | Light distribution system and lighting device provided with same |
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| Country | Link |
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| CN (1) | CN104075236A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095292A1 (en) * | 2014-12-15 | 2016-06-23 | 欧普照明股份有限公司 | Lens and led lamp |
| WO2021127838A1 (en) * | 2019-12-23 | 2021-07-01 | 深圳大学 | Anti-dazzle lens unit and led light source system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060138437A1 (en) * | 2004-12-29 | 2006-06-29 | Tien-Fu Huang | Lens and LED using the lens to achieve homogeneous illumination |
| US20070114551A1 (en) * | 2005-11-18 | 2007-05-24 | Yoshifumi Kawaguchi | White led illumination device |
| CN201281297Y (en) * | 2008-05-28 | 2009-07-29 | 上海可莱特电子有限公司 | Astigmatic lens and bulb using the astigmatic lens |
| CN102072458A (en) * | 2010-11-20 | 2011-05-25 | 特殊光电科技(中山)有限公司 | Lens for LED lamp |
| CN103175096A (en) * | 2011-12-20 | 2013-06-26 | 海洋王照明科技股份有限公司 | Lens and lamp using lens |
-
2013
- 2013-03-28 CN CN201310105923.9A patent/CN104075236A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060138437A1 (en) * | 2004-12-29 | 2006-06-29 | Tien-Fu Huang | Lens and LED using the lens to achieve homogeneous illumination |
| US20070114551A1 (en) * | 2005-11-18 | 2007-05-24 | Yoshifumi Kawaguchi | White led illumination device |
| CN201281297Y (en) * | 2008-05-28 | 2009-07-29 | 上海可莱特电子有限公司 | Astigmatic lens and bulb using the astigmatic lens |
| CN102072458A (en) * | 2010-11-20 | 2011-05-25 | 特殊光电科技(中山)有限公司 | Lens for LED lamp |
| CN103175096A (en) * | 2011-12-20 | 2013-06-26 | 海洋王照明科技股份有限公司 | Lens and lamp using lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095292A1 (en) * | 2014-12-15 | 2016-06-23 | 欧普照明股份有限公司 | Lens and led lamp |
| WO2021127838A1 (en) * | 2019-12-23 | 2021-07-01 | 深圳大学 | Anti-dazzle lens unit and led light source system |
| CN114746921A (en) * | 2019-12-23 | 2022-07-12 | 深圳大学 | Anti-glare lens unit and LED light source system |
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Application publication date: 20141001 |