CN103133987B - LED lens and the LED lamp containing these LED lens - Google Patents
LED lens and the LED lamp containing these LED lens Download PDFInfo
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- CN103133987B CN103133987B CN201110374416.6A CN201110374416A CN103133987B CN 103133987 B CN103133987 B CN 103133987B CN 201110374416 A CN201110374416 A CN 201110374416A CN 103133987 B CN103133987 B CN 103133987B
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Abstract
A kind of LED lens, comprise transparent bodies, transparent bodies has end face, bottom surface and curved side, bottom surface and end face are oppositely arranged, transparent bodies offers groove on bottom surface, groove is with the optical axis of LED lens for symmetry axis and Rotational Symmetry, and the shape of the groove diapire relative with end face is free form surface, and protrudes towards the opening of groove; Curved side connects end face and described bottom surface, the free form surface that curved side is is rotation axes of symmetry with the optical axis of LED lens, and LED lens protrude dorsad; Wherein, the sidewall of groove and diapire are incidence surface, and end face is exiting surface.The shape of the above-mentioned curved side of LED lens and the diapire of groove is free form surface, constitutes secondary light-distribution structure, and free form surface accurately can control radiation direction, to form uniform hot spot; Further, the light that LED side sends, after curved side reflection, reflects from end face, to improve light utilization efficiency.The present invention also provides a kind of LED lamp.
Description
[technical field]
The present invention relates to a kind of lens, particularly relate to a kind of LED lens and the LED lamp containing these LED lens.
[background technology]
Constantly perfect along with LED (LightEmittingDiode) technology, light efficiency and the luminous flux of single LEDs improve constantly.The illuminator that the thing followed is light source with single LEDs also will be on the increase.But the surperficial bright dipping of LED chip is Lambertian distribution, cannot directly apply to illuminator.Therefore, with LED be light source secondary light-distribution lens design seem particularly important.
At present, the lens that market can realize uniform light distribution mainly occur with the form of Fig. 1, and wherein 2 represent LED point light source, and 1 represents secondary light-distribution lens.Generally, secondary light-distribution lens adopts at least one aspheric surface to reach the effect of uniform light distribution.But this secondary light-distribution lens occurred with the form of concave and convex lenses, owing to cannot utilize the luminous energy of LED side, therefore capacity usage ratio is low, usually below 80%, simultaneously, because aspheric surface completely accurately can not control light trend, make the illuminance uniformity of face to be illuminated also not high.
[summary of the invention]
In view of above-mentioned condition, be necessary that providing a kind of can make LED bright dipping comparatively even and the LED lens that light utilization efficiency is higher.
A kind of LED lens, comprise transparent bodies, described transparent bodies has:
End face is plane;
Bottom surface, be oppositely arranged with described end face, described transparent bodies offers groove on described bottom surface, described groove with the optical axis of described LED lens for symmetry axis and Rotational Symmetry, and the shape of the described groove diapire relative with described end face is free form surface, and protrude towards the opening of described groove; And
Curved side, connects described end face and described bottom surface, the free form surface that described curved side is is rotation axes of symmetry with the optical axis of described LED lens, and described LED lens protrude dorsad;
Wherein, the sidewall of described groove and diapire are incidence surface, and described end face is exiting surface.
Further, the curved surface radian of described curved side is 60 degree.
Further, the diameter of described end face is 42.5 millimeters, and the distance of described end face and described bottom surface is 23 millimeters, and the distance of the highest salient point of the diapire of described bottom surface and described groove is 8 millimeters.
Further, the curved surface radian of described curved side is 30 degree.
Further, the diameter of described end face is 47 millimeters, and the distance of described end face and described bottom surface is 23 millimeters, and the distance of the highest salient point of the diapire of described bottom surface and described groove is 8 millimeters.
Further, the sidewall of described groove is directly connected with described curved side.
Further, the opening periphery of described groove and described curved side interval are arranged.
Further, described curved side is fully reflecting surface.
Further, described groove is cylindrical.
Meanwhile, the present invention also provides a kind of LED lamp containing above-mentioned LED lens.
A kind of LED lamp, comprising:
Above-mentioned LED lens; And
LED, is located at described bottom surface, and is positioned on described optical axis.
The shape of the above-mentioned curved side of LED lens and the diapire of groove is free form surface, constitutes secondary light-distribution structure, and free form surface accurately can control radiation direction, to form uniform hot spot; Further, the light that LED side sends, after curved side reflection, reflects from end face, to improve light utilization efficiency.Therefore, the bright dipping of above-mentioned LED lens is comparatively even, and light utilization efficiency is higher.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of traditional LED lamp;
Fig. 2 is the schematic diagram of the LED lamp of better embodiment one of the present invention;
The stereogram of the LED lens that Fig. 3 is the LED lamp shown in Fig. 1;
The top view of the LED lens that Fig. 4 is the LED lamp shown in Fig. 1;
Fig. 5 is the profile along V-V line in Fig. 4;
The side view of the LED lens that Fig. 6 is the LED lamp shown in Fig. 1;
The illumination curve figure that Fig. 7 is the LED lamp shown in Fig. 1;
The light intensity distribution curve flux figure that Fig. 8 is the LED lamp shown in Fig. 1;
Fig. 9 is the illumination curve figure of the LED lamp of another embodiment;
Figure 10 is the light intensity distribution curve flux figure of the LED lamp of another embodiment;
Figure 11 is the schematic diagram of the LED lamp of embodiment of the present invention two.
[detailed description of the invention]
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 2, the LED lamp 10 of better embodiment one of the present invention comprises LED lens 100 and LED200.
Refer to Fig. 3 to Fig. 4, LED lens 100, comprise transparent bodies (figure does not mark).Transparent bodies has end face 110, bottom surface 120 and curved side 130.
End face 110 is plane, concrete, is the plane of circle.End face 110 is the exiting surface of LED lens.
Bottom surface 120 and end face 110 are oppositely arranged, and are circular.Transparent bodies offers groove 121 on bottom surface 120.Groove 121 is with the optical axis of LED lens 100 for symmetry axis and Rotational Symmetry, and the shape of the diapire that groove 121 is relative with end face 110 is free form surface, and protrudes towards the opening of groove 121.Opening periphery and curved side 130 interval of groove 121 are arranged, and namely the opening diameter of groove 121 is less than the diameter of bottom surface 120.
Groove 121 can be cylindrical, reverse frustoconic, elliptical table shape etc., and specifically in the present embodiment, groove 121 is cylindrical.
It should be noted that, the sidewall of groove 121 also can directly be connected with curved side 130, and namely the opening diameter of groove 121 equals the diameter of bottom surface 120.
Curved side 130 connects end face 110 and bottom surface 120.The free form surface that curved side 130 is is rotation axes of symmetry with the optical axis of LED lens 100, and the optical axis of LED lens 100 protrudes dorsad.
If improve the light utilization efficiency of LED lens 100 further, then curved side 130 can be fully reflecting surface.Such as, curved side 130 applies one deck fluorescence coating, when penetrating towards the outside in transparent bodies to make light, in curved side 130, place is totally reflected.
Please again consult Fig. 5, in the present embodiment, the curved surface radian measure alpha of curved side 130 is 60 degree.The diameter R of end face 110 is 42.5 millimeters, and end face 110 is 23 millimeters with the distance H1 of bottom surface 120, and the distance H2 of the highest salient point of the diapire of bottom surface and groove 121 is 8 millimeters.
In other embodiments, the curved surface radian of curved side 130 is 30 degree.The diameter of end face 110 is 47 millimeters, and end face 110 is 23 millimeters with the distance of bottom surface 120, and bottom surface 110 is 8 millimeters with the distance of the highest salient point of the diapire of groove 121.
In the present embodiment, LED200 is one, and it is located at bottom surface 120, and is positioned on the optical axis of LED lens 100.The sidewall of the groove 121 of LED lens 100 and diapire are incidence surface, and end face 110 is exiting surface.The light that LED200 launches can be injected from the sidewall of groove 121 and diapire, and a part of light directly reflects from end face 110, and a part of light reflects from end face 110 after curved side 130 reflects again in addition.
Be appreciated that LED200 is not limited to one, if improve the exposure intensity of 10 of LED lamp, then LED200 also can be multiple, and be symmetrical arranged relative to the optical axis of LED lens 100.
In addition, in order to stably fixed L ED200, prevent LED200 be subject to ectocine and easily vibrate, the bottom surface 120 of LED lens 100 is provided with reflecting plate, and the reflecting surface of reflecting plate is arranged near groove 121.Because LED200 is fixing with on reflecting plate, its light of being returned by the diapire of groove 121 and sidewall reflects, is gone back by the reflective surface of reflecting plate, again through LED lens 100, thus improves light utilization efficiency further.
Refer to Fig. 7 and Fig. 8, the bright dipping situation that the curved surface radian of above-mentioned curved side is the LED lamp of 60 degree is tested, wherein, the light intensity distribution curve flux figure of Fig. 7 to be the illumination curve figure of LED lamp, Fig. 8 be LED lamp.From Fig. 7 and Fig. 8, the level of illumination visible uniformity of LED lamp is up to 90%, and light utilization efficiency is 94%.
Refer to Fig. 9 and Figure 10, the bright dipping situation that the curved surface radian of above-mentioned curved side is the LED lamp of 30 degree is tested, wherein, the light intensity distribution curve flux figure of Fig. 9 to be the illumination curve figure of LED lamp, Figure 10 be LED lamp.From Fig. 9 and Figure 10, the level of illumination visible uniformity of LED lamp is up to 90%, and light utilization efficiency is 94%.
The shape of the curved side 130 of above-mentioned LED lens 100 and the diapire of groove is free form surface, constitutes secondary light-distribution structure, and free form surface accurately can control radiation direction, to form uniform hot spot; Further, the light that LED200 side sends, after curved side reflection, reflects from end face 110, to improve light utilization efficiency.Therefore, the bright dipping of above-mentioned LED lens 100 is comparatively even, and light utilization efficiency is higher.
Refer to Figure 11, the LED lamp 20 of embodiment of the present invention two is similar to the LED lamp 10 of embodiment one, its difference is: LED lens 100 and LED200 are multiple, and are arranged in array, such as rectangular array, donut array, undulating array etc.; LED lamp 20 also comprises the diffuser plate 300 be located at above LED lens 100 exiting surface and the reflecting plate 400 be located at below LED200.The light that multiple LED lens 100 transmit, after diffuser plate 300 spreads, makes the bright dipping of LED lamp 20 more even.The light reflected by LED lens 100 can reflect back by reflecting plate 400 again, to improve light utilization efficiency further.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (6)
1. LED lens, is characterized in that, comprise transparent bodies, and described transparent bodies has:
End face is plane;
Bottom surface, be oppositely arranged with described end face, described transparent bodies offers groove on described bottom surface, described groove with the optical axis of described LED lens for symmetry axis and Rotational Symmetry, and the shape of the described groove diapire relative with described end face is free form surface, and protrude towards the opening of described groove; And
Curved side, connects described end face and described bottom surface, the free form surface that described curved side is is rotation axes of symmetry with the optical axis of described LED lens, and described LED lens protrude dorsad;
Wherein, the sidewall of described groove and diapire are incidence surface, and described end face is exiting surface;
The bottom surface of described LED lens is provided with reflecting plate, and the reflecting surface of described reflecting plate is arranged near described groove;
The curved surface radian of described curved side is 60 degree, and the diameter of described end face is 42.5 millimeters, and the distance of described end face and described bottom surface is 23 millimeters, and the distance of the highest salient point of the diapire of described bottom surface and described groove is 8 millimeters; Or
The curved surface radian of described curved side is 30 degree, and the diameter of described end face is 47 millimeters, and the distance of described end face and described bottom surface is 23 millimeters, and the distance of the highest salient point of the diapire of described bottom surface and described groove is 8 millimeters.
2. LED lens as claimed in claim 1, it is characterized in that, the sidewall of described groove is directly connected with described curved side.
3. LED lens as claimed in claim 1, it is characterized in that, opening periphery and the described curved side interval of described groove are arranged.
4. LED lens as claimed in claim 1, it is characterized in that, described curved side is fully reflecting surface.
5. LED lens as claimed in claim 1, it is characterized in that, described groove is cylindrical.
6. a LED lamp, is characterized in that, comprising:
LED lens as described in any one of Claims 1 to 5; And
LED, is located at described bottom surface, and is positioned on described optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374416.6A CN103133987B (en) | 2011-11-22 | 2011-11-22 | LED lens and the LED lamp containing these LED lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374416.6A CN103133987B (en) | 2011-11-22 | 2011-11-22 | LED lens and the LED lamp containing these LED lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133987A CN103133987A (en) | 2013-06-05 |
| CN103133987B true CN103133987B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110374416.6A Active CN103133987B (en) | 2011-11-22 | 2011-11-22 | LED lens and the LED lamp containing these LED lens |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344249A (en) * | 2013-08-07 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
| CN104421839B (en) * | 2013-09-09 | 2019-04-12 | 海洋王（东莞）照明科技有限公司 | A kind of LED lens, photographic device and lighting device |
| CN104678681A (en) * | 2013-11-29 | 2015-06-03 | 海洋王（东莞）照明科技有限公司 | Lens assembly, light supplementing assembly and camera with light supplementing assembly |
| CN104949063A (en) * | 2014-03-27 | 2015-09-30 | 海洋王（东莞）照明科技有限公司 | LED lamp and lens thereof |
| CN105570834A (en) * | 2014-11-10 | 2016-05-11 | 中节能晶和照明有限公司 | LED lens emitting light from plane and design method of LED lens |
| CN104712936A (en) * | 2015-03-18 | 2015-06-17 | 四川联恺环保科技有限公司 | LED spotlight |
| CN106152052A (en) * | 2015-04-01 | 2016-11-23 | 全亿大科技（佛山）有限公司 | Lens and there is the illuminator of these lens |
| CN106886120A (en) * | 2017-04-28 | 2017-06-23 | 深圳东方红鹰科技有限公司 | With the detection camera for homogenizing light source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404630A (en) * | 2000-12-22 | 2003-03-19 | 皇家菲利浦电子有限公司 | LED module |
| CN1727744A (en) * | 2004-07-30 | 2006-02-01 | 希格玛牙科系统有限责任公司 | Luminous body |
| CN201349022Y (en) * | 2009-01-22 | 2009-11-18 | 伍志坚 | LED lens board |
| CN101776242A (en) * | 2009-01-12 | 2010-07-14 | 林万炯 | Side light guiding lens for light emitting diode (LED) light source |
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2011
- 2011-11-22 CN CN201110374416.6A patent/CN103133987B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404630A (en) * | 2000-12-22 | 2003-03-19 | 皇家菲利浦电子有限公司 | LED module |
| CN1727744A (en) * | 2004-07-30 | 2006-02-01 | 希格玛牙科系统有限责任公司 | Luminous body |
| CN101776242A (en) * | 2009-01-12 | 2010-07-14 | 林万炯 | Side light guiding lens for light emitting diode (LED) light source |
| CN201349022Y (en) * | 2009-01-22 | 2009-11-18 | 伍志坚 | LED lens board |
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| CN103133987A (en) | 2013-06-05 |
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