CN204153704U - A kind of planar light extracting LED lens - Google Patents
A kind of planar light extracting LED lens Download PDFInfo
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- CN204153704U CN204153704U CN201420664358.XU CN201420664358U CN204153704U CN 204153704 U CN204153704 U CN 204153704U CN 201420664358 U CN201420664358 U CN 201420664358U CN 204153704 U CN204153704 U CN 204153704U
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Abstract
The utility model discloses a kind of planar light extracting LED lens, comprise top, side and bottom, top is exiting surface, and side surrounding arranges reflector face, and bottom is provided with inner cavity.Exiting surface is plane, and inner cavity comprises end face and withdrawing pattern face, and end face is free form surface.Planar light extracting LED lens exiting surface of the present utility model is plane, substantially increases the convenience that light fixture is safeguarded, after lens surface laying dust, can be easy to clean, thus the maintenance factor making light fixture remain higher, keep good optical property.
Description
Technical field
The utility model belongs to optical element, system or Instrument technology field, specifically refers to a kind of planar light extracting LED lens.
Background technology
LED has the advantages such as energy-saving and environmental protection, long service life, reaction speed be fast relative to conventional illumination sources, and be considered to 21 century top quality light source, the exploitation of LED illumination product, development, production have become very tempting rising industry.But the light that LED sends is lambertian distribution, is difficult to be directly used in illumination, needs to carry out secondary optical design, have different requirements for different light scene.Primary optical design is considered as to the encapsulation of LED chip, designs refractor and reflection shield etc. according to the result of primary optical design and be considered as secondary optical design with the optical design process of satisfied illumination application.The main task of secondary optical design is that lambert's type luminous intensity distribution is transformed into the luminous intensity distribution that can be applied to different scene lighting.This process has vital effect to LED in the application of lighting field.
At present, the traditional optical lens of most use are as cylindrical mirror or spherical mirror etc., their exiting surface is mostly for protruding curved surface, not easy to clean, lens easily accumulate dust, causes lens light extraction efficiency low, affect lamp lighting effect, considerably increase light fixture maintenance difficulties, improve light fixture maintenance cost.
Summary of the invention
The utility model is solve existing LED lens light extraction efficiency problem low, not easy to clean, proposes a kind of novel planar light extracting LED lens.
For solving the problem, the technical scheme that the utility model is taked is: a kind of planar light extracting LED lens, comprise top, side and bottom 1, it is characterized in that: top is exiting surface 2, side surrounding arranges reflector face 3, and bottom 1 is provided with inner cavity 11, and described exiting surface 2 is plane, described inner cavity 11 comprises end face and withdrawing pattern face 111, and end face is free form surface 112.
Preferably, side surrounding arranges reflector face 3, and the light making not enter lens by free form surface 112 by planar light extracting face 2 outgoing at top, reduces the total reflection of exit facet, improves the light extraction efficiency of lens behind reflector face 3.
Preferably, described lens are axially symmetric structure, have two orthogonal symmetry axis, are respectively major axis symmetry axis 4 and minor axis symmetry axis 5.
Preferably, described lens are that glass, PC, PMMA or the other materials that refractive index is greater than 1 is made.
The beneficial effect that the utility model obtains is: a kind of planar light extracting LED lens that the utility model provides, side surrounding arranges reflector face, the light making not enter lens by free form surface by the planar light extracting face outgoing at top, improves the light extraction efficiency of lens behind reflector face; Exiting surface is the convenience that plane substantially increases light fixture maintenance, after lens surface laying dust, can be easy to clean, thus the maintenance factor making light fixture remain higher, keep good optical property; Exiting surface is that plane does not have projection, thus decreases dazzle, can improve travel safety when especially using in tunnel illumination.
Accompanying drawing explanation
Fig. 1 is a kind of structure chart of planar light extracting LED lens.
Fig. 2 is a kind of stereogram of planar light extracting LED lens.
Fig. 3 is a kind of symmetry axis schematic diagram of planar light extracting LED lens.
Fig. 4 is that a kind of planar light extracting LED lens are at major axis symmetry axis cross section light path schematic diagram.
Fig. 5 is that a kind of planar light extracting LED lens are at minor axis symmetry axis cross section light path schematic diagram.
Drawing reference numeral: 1, bottom; 11, inner cavity; 111, withdrawing pattern face; 112, free form surface; 2, exiting surface; 3, reflector face; 4, major axis symmetry axis; 5, minor axis symmetry axis.
Detailed description of the invention
See accompanying drawing 1 to 3, a kind of planar light extracting LED lens, comprise top, side and bottom 1, it is characterized in that: top is exiting surface 2, side surrounding arranges reflector face 3, and bottom 1 is provided with inner cavity 11, and described exiting surface 2 is plane, described inner cavity 11 comprises end face and withdrawing pattern face 111, and end face is free form surface 112.
Further, side surrounding arranges reflector face 3, and the light making not enter lens by free form surface 112 by planar light extracting face 2 outgoing at top, reduces the total reflection of exit facet, improves the light extraction efficiency of lens after reflector 3.
Further, described lens are axially symmetric structure, have two orthogonal symmetry axis, are respectively major axis symmetry axis 4 and minor axis symmetry axis 5.
As shown in Figure 4, lens are at major axis symmetry axis 4 cross section light path schematic diagram, and light L0 vertical incidence lens do not change the direction of propagation, at exiting surface 2 vertical exit; Light L1, L2, L3 and L4 enter lens, from top planes exiting surface 2 outgoing after propagation by free form surface 112 refraction; Light L5 by withdrawing pattern face 111 entrance lens, through reflector face 3 reflect after from top planes exiting surface 2 outgoing.
As shown in Figure 5, lens are at minor axis symmetry axis 5 cross section light path schematic diagram, and light S0 vertical incidence lens do not change the direction of propagation, at exit facet vertical exit; Light S1, S2 and S3 by free form surface refraction enter lens propagate after from top planes outgoing; Light S4 by withdrawing pattern face entrance lens, through reflector face 3 reflect after from top planes exiting surface 2 outgoing.
Further, described lens are that glass, PC, PMMA or the other materials that refractive index is greater than 1 is made.
What more than enumerate is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have manyly similar to change shape.All distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think the claimed scope of the utility model.
Claims (3)
1. planar light extracting LED lens, comprise top, side and bottom (1), it is characterized in that: top is exiting surface (2), side surrounding arranges reflector face (3), bottom (1) is provided with inner cavity (11), described exiting surface (2) is plane, and described inner cavity (11) comprises end face and withdrawing pattern face (111), and end face is free form surface (112).
2. a kind of planar light extracting LED lens according to claim 1, is characterized in that: described lens are axially symmetric structure, have two orthogonal symmetry axis, are respectively major axis symmetry axis (4) and minor axis symmetry axis (5).
3. a kind of planar light extracting LED lens according to claim 1, is characterized in that: described lens be refractive index be greater than 1 glass or PC or PMMA material make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664358.XU CN204153704U (en) | 2014-11-10 | 2014-11-10 | A kind of planar light extracting LED lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664358.XU CN204153704U (en) | 2014-11-10 | 2014-11-10 | A kind of planar light extracting LED lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153704U true CN204153704U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420664358.XU Active CN204153704U (en) | 2014-11-10 | 2014-11-10 | A kind of planar light extracting LED lens |
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| CN (1) | CN204153704U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105627193A (en) * | 2015-06-04 | 2016-06-01 | 中节能晶和照明有限公司 | LED tunnel lamp conveniently dissipating heat |
| CN105650601A (en) * | 2015-06-04 | 2016-06-08 | 中节能晶和照明有限公司 | LED lens array surface cover and fixing structure thereof |
| CN109323138A (en) * | 2018-11-23 | 2019-02-12 | 欧普照明股份有限公司 | Light distribution element, light source assembly and illuminator |
-
2014
- 2014-11-10 CN CN201420664358.XU patent/CN204153704U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105627193A (en) * | 2015-06-04 | 2016-06-01 | 中节能晶和照明有限公司 | LED tunnel lamp conveniently dissipating heat |
| CN105650601A (en) * | 2015-06-04 | 2016-06-08 | 中节能晶和照明有限公司 | LED lens array surface cover and fixing structure thereof |
| CN109323138A (en) * | 2018-11-23 | 2019-02-12 | 欧普照明股份有限公司 | Light distribution element, light source assembly and illuminator |
| CN109323138B (en) * | 2018-11-23 | 2024-04-26 | 欧普照明股份有限公司 | Light distribution element, light source assembly and lighting lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 689, aixihu North Road, high tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: China energy saving Jinghe Technology Co.,Ltd. Address before: No. 689, aixihu North Road, high tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: CECEP LATTICELIGHTING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |