CN102072460B - Lens for increasing spacing height ratio and improving illumination uniformity of light emitting diode (LED) lamp - Google Patents
Lens for increasing spacing height ratio and improving illumination uniformity of light emitting diode (LED) lamp Download PDFInfo
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- CN102072460B CN102072460B CN2010105948619A CN201010594861A CN102072460B CN 102072460 B CN102072460 B CN 102072460B CN 2010105948619 A CN2010105948619 A CN 2010105948619A CN 201010594861 A CN201010594861 A CN 201010594861A CN 102072460 B CN102072460 B CN 102072460B
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- 235000014698 Brassica juncea var multisecta Nutrition 0.000 claims description 9
- 241000251184 Rajiformes Species 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000004313 glare Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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Abstract
The invention discloses a lens for increasing a spacing height ratio and improving the illumination uniformity of a light emitting diode (LED) lamp, which consists of seven transmission surfaces. The first, third and sixth refracting surfaces form the incident surface of the lens, and the second, fifth and seventh refracting surfaces form the emergent surface of the lens. Parallel light rays emitted from the second and fifth refracting surfaces are used for far-field small-angle illumination, and nonparallel light rays emitted from the seventh refracting surfaces are used for near-field wide-angle illumination. The lens provided by the invention can combine rear-field and near-field illumination and achieve high illumination uniformity, so that the lamp can be used at a high spacing height ratio without producing glare.
Description
Technical field
The present invention relates to a kind of optical element, in particular, relate to the lens of a kind of LED of raising light fixture apart from height ratio and illuminance uniformity.
Background technology
In some LED illumination application, be an important parameter weighing illuminating effect apart from height ratio and illuminance uniformity.Be meant that apart from height ratio distance and light fixture between the light fixture is from the ratio of the distance of face to be illuminated; Such as application scenario in road lighting; Is vertical apart from height ratio along distance between adjacent two light fixtures of road direction and light fixture from the ratio of the distance on road surface, and the distance and the light fixture that are installed between two light fixtures on both sides of the road are horizontal apart from height ratio from the ratio of the distance on road surface.In low level illumination, the pole height of LED light fixture promptly is installed when relatively lower, not only required irradiation distance distant but also require illuminance uniformity than higher occasion, such as, very wide road lighting, present LED light fixture just is difficult to reach requirement.Because at present the LED light fixture is horizontal all lower apart from height ratio, generally have only 3: 1 or lower, the LED lamp installation mode of this high lamp stand not only can produce serious glare to driver's eyes, causes very big potential safety hazard, and causes the lamp stand cost higher.Also have some other application scenario,, also belong to low level illumination such as wall lamp, therefore than needs big apart from height ratio and high illuminance uniformity.
Summary of the invention
The present invention is directed to the technical problem that exists in the prior art; The lens of a kind of LED of raising light fixture apart from height ratio and illuminance uniformity are provided; The LED light fixture of these lens is installed, can be realized taking into account the illumination of far field and near field and can reach the effect of very high illuminance uniformity, make light fixture very big apart from height ratio use and do not produce dazzle down; Light utilization is very high, is applicable to various types of led light sources.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is following:
Improve the lens of LED light fixture apart from height ratio and illuminance uniformity; Comprise a lens installation bottom surface, on said lens installation bottom surface, be provided with confession LED and be installed on the pit in it that inner surface of this pit constitutes the plane of incidence of lens; Also comprise the outer surface that forms the beam projecting face; Said lens are made up of seven logical light faces, and wherein the two ends of first plane of refraction connect third reflect face and the 6th plane of refraction respectively, and the inner surface of the first, the 3rd, the 6th plane of refraction constitutes the plane of incidence of lens jointly; The two ends of second plane of refraction connect the 5th plane of refraction and the 7th plane of refraction respectively, and the outer surface of the second, the 5th, the 7th plane of refraction constitutes the exit facet of lens jointly; Wherein the whole emergent raies on first plane of refraction only reflect through second plane of refraction; Whole emergent raies on the third reflect face are earlier through the reflection of the 4th fully reflecting surface; All reflection ray reflects through the 5th plane of refraction again; What warp second plane of refraction and the 5th plane of refraction reflected is parallel rays, and the whole emergent raies on the 6th plane of refraction reflect non-parallel light through the 7th planes of refraction, and an end of the 4th fully reflecting surface is connected with the 5th plane of refraction; Three, the other end of the 6th, the 7th plane of refraction and the 4th fully reflecting surface all is positioned at lens and installs on the bottom surface, and it is that a cross section Rotate 180 degree by lens forms that said lens are installed the bottom surface.
The position of the tie point of said first plane of refraction and third reflect face is close to another end points of first plane of refraction than other points on this third reflect face.
The reflection ray of the tie point of said process third reflect face and the 4th fully reflecting surface is through the tie point of second plane of refraction and the 5th plane of refraction, and the angle >=2arcsin between this incident ray and the reflection ray (1/n), and wherein n is the refractive index of lens.
Said first plane of refraction, second plane of refraction, third reflect face, the 4th fully reflecting surface, the 5th plane of refraction, the 6th plane of refraction and the 7th plane of refraction are respectively level and smooth curve.
It is the transparent material between 1.3～4.2 that said lens adopt refractive index.
The technical scheme that the present invention adopted, the multiaspect design of scioptics, rays pass through lens second and the 5th plane of refraction that led light source sends are refracted as parallel rays; Realize far field low-angle luminous intensity distribution; From the light that lens the 7th plane of refraction reflects, realize near field wide-angle luminous intensity distribution, make the LED light fixture that adopts these lens when setting height(from bottom) is very low; Shine very wide scope and illuminance uniformity and can reach very high; Thereby improve greatly the LED lighting apart from height ratio, accomplish to see that light loses lamp, thoroughly the illuminating effect of free from glare.In actual the use, when the LED light fixture is installed, usually lens or LED light fixture are carried out low-angle inclination.This is owing to receive the size of led light source; The influence of factors such as lens sizes and lens processing technology; The light that the second and the 5th plane of refraction of scioptics reflects can not keep strict parallel rays, but has dispersing of certain angle, and lens are done inclination slightly; Can make and deviate from that part of irradiate light that face to be illuminated exhales, improve the light utilization of light source to face to be illuminated.Withdrawing pattern is convenient in process of production in order to make lens, and the position of the tie point of lens first plane of refraction and third reflect face is close to another end points of first plane of refraction than other points on this third reflect face.
Adopt the LED light fixture of lens of the present invention, can make in actual use to reach more than 6: 1, and illuminance uniformity can reach 0.8 apart from height ratio.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation:
Fig. 1 is the lens arrangement sketch map of the embodiment of the invention;
Fig. 2 is the sectional view of Fig. 1 lens;
Fig. 3 is the installation bottom surface structure chart of Fig. 1 lens;
Fig. 4 is that the light on the cross section shown in Figure 2 moves towards figure;
Fig. 5 is the LED light fixture radiation response figure that uses lens of the present invention.
The specific embodiment
Fig. 1～shown in Figure 4; The disclosed raising of the present invention LED light fixture is made up of seven logical light faces apart from the lens of height ratio and illuminance uniformity, and wherein the two ends of first plane of refraction 1 connect third reflect face 3 and the 6th plane of refraction 6 respectively; On the sectional view as shown in Figure 2, its tie point is respectively e and a.The inner surface of first plane of refraction 1, third reflect face 3, the 6th plane of refraction 6 constitutes the plane of incidence of lens jointly; The other end of third reflect face 3 and the 6th plane of refraction 6 all is positioned at lens and installs on the bottom surface 10; On the sectional view as shown in Figure 2, this end points is respectively shown in c and the h.The two ends of second plane of refraction 2 connect the 5th plane of refraction 5 and the 7th plane of refraction 7 respectively, and on the sectional view as shown in Figure 2, its tie point is respectively f and b.The outer surface of second plane of refraction 2, the 5th plane of refraction 5, the 7th plane of refraction 7 constitutes the exit facet of lens jointly.One end of the 4th fully reflecting surface 4 is connected with the 5th plane of refraction 5, and the other end is positioned to be installed on the bottom surface 10, respectively g point and the d point on the cross section as shown in Figure 2.The other end of the 7th plane of refraction 7 is positioned at installs on the bottom surface 10 the j point on the cross section as shown in Figure 2.
Move towards among the figure at light shown in Figure 4; Whole emergent raies on first plane of refraction 1 only reflect through second plane of refraction 2; Whole emergent raies on the third reflect face 3 are earlier through 4 reflections of the 4th fully reflecting surface; All reflection rays reflect through the 5th plane of refraction 5 again, and the light that reflects from second plane of refraction 2 and the 5th plane of refraction 5 is parallel rays.Be positioned at the point of installing on the bottom surface 10 on the 4th fully reflecting surface 4; D point as shown in Figure 4; Its reflection ray is through the tie point f of second plane of refraction 2 and the 5th plane of refraction 5; And incident ray cd and the angle between the reflection ray df at a d satisfy α >=2arcsin (1/n) (wherein n is the refractive index of lens), so that all incident raies on the 4th fully reflecting surface 4 all reflect to the 5th plane of refraction 5.
In order to make lens withdrawing pattern in batch production process more convenient; The link of the lens third reflect face 3 of the present invention and first plane of refraction 1, the joining e on the cross section as shown in Figure 2 more are close to another end points a of first plane of refraction than other points on this third reflect face 3.
With the cross section Rotate 180 degree of lens shown in Figure 2, form the three-dimensional shape of lens of the present invention as shown in Figure 1, and this cross section forms the installation bottom surface 10 of lens as shown in Figure 3 after rotating.
Installing at lens shown in Figure 3 has the led light source of confession to be installed on the pit 11 in it on the bottom surface 10, the inner surface of this pit 11 is made up of the inner surface of first plane of refraction 1, third reflect face 3, the 6th plane of refraction 6, and forms the plane of incidence of lens jointly.
When reality is used, lens are done low-angle inclination, the LED light fixture that these lens perhaps will be installed is done low-angle inclination; Purpose is that emergent ray is as far as possible all shone to the road surface; This is owing to the size that receives led light source, the influence of factors such as lens sizes and lens processing technology, and the light that second plane of refraction 2 of scioptics and the 5th plane of refraction 5 reflect can not keep strict parallel rays; But have dispersing of certain angle; And lens are done inclination slightly, and can make and deviate from that part of irradiate light that the road surface exhales to the road surface, improve the light utilization of light source.And can do suitable adjustment to satisfy instructions for use to this angle of inclination according to the scope on actual road surface.
Above-mentioned first plane of refraction 1, second plane of refraction 2, third reflect face 3, the 4th fully reflecting surface 4, the 5th plane of refraction 5, the 6th plane of refraction 6 and the 7th plane of refraction 7 are level and smooth curve.
Shown in Figure 5 the setting height(from bottom) that the LED light fixture 20 of lens of the present invention is installed among the figure is H in order to use the LED light fixture radiation response figure of lens of the present invention, and the face to be illuminated width is L, and the area to be illuminated territory is 100.
Table one is depicted as road bilateral cloth lamp; The setting height(from bottom) of LED light fixture is 0.9 meter, the brightness value when shine width of roadway and be respectively 9.5 meters, 10.5 meters, 15 meters and 16 meters, from table it is thus clear that; Is 5.3: 1 o'clock in the horizontal of LED light fixture apart from height ratio; Uniformity of illuminance reaches more than 0.8, is 8.9: 1 o'clock in the horizontal of LED light fixture apart from height ratio, and uniformity of illuminance reaches more than 0.5.
Table one
Shown in Figure 5, the setting height(from bottom) of LED light fixture 20 is H, and the face to be illuminated width is L, and the area to be illuminated territory is illustrated 100.Can find out intuitively that from figure H is very little and L is very big, promptly the LED light fixture is very big apart from height ratio.
Claims (5)
1. improve the lens of LED light fixture apart from height ratio and illuminance uniformity; Comprise a lens installation bottom surface; On said lens installation bottom surface, being provided with supplies LED to be installed on the pit in it; The inner surface of this pit constitutes the plane of incidence of lens, also comprises the outer surface that forms the beam projecting face, and it is characterized in that: said lens are made up of seven logical light faces; Wherein the two ends of first plane of refraction connect third reflect face and the 6th plane of refraction respectively, and the inner surface of the first, the 3rd, the 6th plane of refraction constitutes the plane of incidence of lens jointly; The two ends of second plane of refraction connect the 5th plane of refraction and the 7th plane of refraction respectively, and the outer surface of the second, the 5th, the 7th plane of refraction constitutes the exit facet of lens jointly; Wherein the whole emergent raies on first plane of refraction only reflect through second plane of refraction; Whole emergent raies on the third reflect face are earlier through the reflection of the 4th fully reflecting surface; All reflection ray reflects through the 5th plane of refraction again; What warp second plane of refraction and the 5th plane of refraction reflected is parallel rays, and the whole emergent raies on the 6th plane of refraction reflect non-parallel light through the 7th planes of refraction, and an end of the 4th fully reflecting surface is connected with the 5th plane of refraction; Three, the other end of the 6th, the 7th plane of refraction and the 4th fully reflecting surface all is positioned at lens and installs on the bottom surface, and it is that a cross section Rotate 180 degree by lens forms that said lens are installed the bottom surface.
2. raising LED light fixture according to claim 1 is apart from the lens of height ratio and illuminance uniformity, and it is characterized in that: the position of the tie point of said first plane of refraction and third reflect face is close to another end points of first plane of refraction than other points on this third reflect face.
3. raising LED light fixture according to claim 1 is apart from the lens of height ratio and illuminance uniformity; It is characterized in that: at lens the angle >=2arcsin (l/n) between bottom surface place's incident ray and the reflection ray is being installed on said the 4th fully reflecting surface, wherein n is the refractive index of lens.
4. raising LED light fixture according to claim 1 is apart from the lens of height ratio and illuminance uniformity, and it is characterized in that: said first plane of refraction, second plane of refraction, third reflect face, the 4th fully reflecting surface, the 5th plane of refraction, the 6th plane of refraction and the 7th plane of refraction are respectively level and smooth curve.
5. raising LED light fixture according to claim 1 is apart from the lens of height ratio and illuminance uniformity, and it is characterized in that: it is the transparent material between 1.3～4.2 that said lens adopt refractive index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105948619A CN102072460B (en) | 2010-12-16 | 2010-12-16 | Lens for increasing spacing height ratio and improving illumination uniformity of light emitting diode (LED) lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105948619A CN102072460B (en) | 2010-12-16 | 2010-12-16 | Lens for increasing spacing height ratio and improving illumination uniformity of light emitting diode (LED) lamp |
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| Publication Number | Publication Date |
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| CN102072460A CN102072460A (en) | 2011-05-25 |
| CN102072460B true CN102072460B (en) | 2012-12-26 |
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| CN2010105948619A Active CN102072460B (en) | 2010-12-16 | 2010-12-16 | Lens for increasing spacing height ratio and improving illumination uniformity of light emitting diode (LED) lamp |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090309B (en) * | 2011-10-28 | 2017-09-19 | 欧司朗股份有限公司 | Lens and the asymmetrical beam distribution of illumination device with the lens |
| CN103672729B (en) * | 2012-09-13 | 2016-12-21 | 赛尔富电子有限公司 | Lens, LED module and use the illuminator of this LED module |
| CN104214672B (en) * | 2013-05-29 | 2018-01-05 | 赛尔富电子有限公司 | A kind of lens post and the illuminator using the lens post |
| CN103775969B (en) * | 2014-01-30 | 2019-02-05 | 上海战古电子科技有限公司 | The lighting device and its design method of the big light distribution area of curtain wall type |
| CN106523980B (en) * | 2015-09-11 | 2020-09-25 | 上海三思电子工程有限公司 | LED signal lamp |
| CN107327760B (en) * | 2017-08-11 | 2024-03-29 | 华格照明科技（上海）有限公司 | Embedded wall washing lamp |
| CN110007378B (en) * | 2019-04-08 | 2020-12-25 | 惠州市华星光电技术有限公司 | Asymmetric lens |
| CN110486655A (en) * | 2019-07-23 | 2019-11-22 | 广东德洛斯照明工业有限公司 | A kind of lighting system of the cloth lamp on sound barrier |
| CN112728502B (en) * | 2020-12-31 | 2022-12-06 | 美智光电科技股份有限公司 | Lens and lamp |
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| CN101649990A (en) * | 2008-08-16 | 2010-02-17 | 上海三思电子工程有限公司 | Lens for LED street lamp |
| CN101839442A (en) * | 2010-01-13 | 2010-09-22 | 浙江耀中科技有限公司 | LED combined optical lens |
| CN101900290A (en) * | 2009-05-31 | 2010-12-01 | 比亚迪股份有限公司 | LED light distribution lens and LED street lamp containing the lens |
| CN202109399U (en) * | 2010-12-16 | 2012-01-11 | 上海三思电子工程有限公司 | Lens for improving the spacing height ratio and the illumination uniformity of LED light fixture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4964753B2 (en) * | 2007-12-12 | 2012-07-04 | 株式会社小糸製作所 | Lighting fixtures for vehicles |
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- 2010-12-16 CN CN2010105948619A patent/CN102072460B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649990A (en) * | 2008-08-16 | 2010-02-17 | 上海三思电子工程有限公司 | Lens for LED street lamp |
| CN101900290A (en) * | 2009-05-31 | 2010-12-01 | 比亚迪股份有限公司 | LED light distribution lens and LED street lamp containing the lens |
| CN101839442A (en) * | 2010-01-13 | 2010-09-22 | 浙江耀中科技有限公司 | LED combined optical lens |
| CN202109399U (en) * | 2010-12-16 | 2012-01-11 | 上海三思电子工程有限公司 | Lens for improving the spacing height ratio and the illumination uniformity of LED light fixture |
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| CN102072460A (en) | 2011-05-25 |
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Owner name: SHANGHAI SANSI TECHNOLOGY CO., LTD. JIASHAN SANSI Free format text: FORMER OWNER: SHANGHAI SANSI TECHNOLOGY CO., LTD. JIASHAN SANSI OPTOELECTRONICS TECHNOLOGY CO., LTD. Effective date: 20150507 |
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Address after: 201100 Shanghai city Minhang District Shuying Road No. 1280 Patentee after: SHANGHAI SANSI ELECTRONIC ENGINEERING Co.,Ltd. Patentee after: Shanghai Sansi Technology Co.,Ltd. Patentee after: JIASHAN SANSI OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 201100 Shanghai city Minhang District Shuying Road No. 1280 Patentee before: SHANGHAI SANSI ELECTRONIC ENGINEERING Co.,Ltd. Patentee before: Shanghai Sansi Technology Co.,Ltd. Patentee before: Jiashan Jinghui Optoelectronic Technology Co.,Ltd. |
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Effective date of registration: 20190620 Address after: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee after: Shanghai Sansi Technology Co.,Ltd. Patentee after: SHANGHAI SANSI ELECTRONIC ENGINEERING Co.,Ltd. Co-patentee after: JIASHAN SANSI OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Co-patentee after: SANSI OPTOELECTRONICS TECHNOLOGY (SHANGHAI) Co.,Ltd. Co-patentee after: PUJIANG SANSI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee before: Shanghai Sansi Technology Co.,Ltd. Patentee before: SHANGHAI SANSI ELECTRONIC ENGINEERING Co.,Ltd. Co-patentee before: JIASHAN SANSI OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Co-patentee before: SANSI OPTOELECTRONICS TECHNOLOGY (SHANGHAI) Co.,Ltd. |
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Effective date of registration: 20191107 Address after: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee after: Shanghai Sansi Technology Co.,Ltd. Patentee after: SHANGHAI SANSI ELECTRONIC ENGINEERING Co.,Ltd. Co-patentee after: JIASHAN SANSI OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Co-patentee after: PUJIANG SANSI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee before: Shanghai Sansi Technology Co.,Ltd. Patentee before: SHANGHAI SANSI ELECTRONIC ENGINEERING Co.,Ltd. Co-patentee before: JIASHAN SANSI OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Co-patentee before: SANSI OPTOELECTRONICS TECHNOLOGY (SHANGHAI) Co.,Ltd. Co-patentee before: PUJIANG SANSI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
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