CN103208581A - Light emitting diode lens - Google Patents
Light emitting diode lens Download PDFInfo
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- CN103208581A CN103208581A CN2012100150974A CN201210015097A CN103208581A CN 103208581 A CN103208581 A CN 103208581A CN 2012100150974 A CN2012100150974 A CN 2012100150974A CN 201210015097 A CN201210015097 A CN 201210015097A CN 103208581 A CN103208581 A CN 103208581A
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- led lens
- light
- lens according
- face
- planar portions
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Abstract
A light emitting diode lens comprises a light emitting diode lens body, a bottom surface, a top surface and a side surface. A light ray enters the light emitting diode lens body by passing through at least portions of the bottom surface. The light ray is reflected by at least portions of the top surface, and a recess portion is arranged in the center of the top surface. The side surface is connected with the bottom surface and the top surface, and at least parts of the light ray leaves the light emitting diode lens body by passing through the side surface. The light emitting diode lens body comprises a substrate and at least one additive material, the refractive index of the substrate is different from that of the additive material, and the weight percentage of the additive material is from 0.5% to 15%. The light emitting diode lens utilizes the mixing and matching of high and low refractive indexes to reduce glare and the light intensity of a single light point and improve the light diffusion efficiency, so that the problems of light unevenness and too intense glare can be solved to further enhance the luminous efficacy.
Description
Technical field
The present invention is about a kind of lens, especially in regard to a kind of led lens.
Background technology
Light-emitting diode (light emitting diode, LED) assembly is because chemiluminescence, advantages such as power consumption is low, the life-span is long, reaction speed is fast, general application gradually, its range of application have been contained the backlight of indicator light, liquid crystal indicator of computer or household appliances to traffic sign or automobile-used indicator light.
And in the prior art, the bright dipping side at light-emitting diode component arranges a led lens usually, to promote its luminous efficiency.Yet, because traditional lens have the situation that light is inhomogeneous and dazzle is too strong and produce when light is reached reflecting surface and is totally reflected to the side bright dipping by the plane of incidence.
Therefore, how to provide a kind of led lens, can solve the problem that light is inhomogeneous and dazzle is too strong, and then promote luminous efficacy, real is one of current important topic of industry.
Summary of the invention
Purpose of the present invention can solve the problem that light is inhomogeneous and dazzle is too strong for providing a kind of, and then promotes the led lens of luminous efficacy.
The present invention can realize by the following technical solutions.
A kind of led lens of the present invention comprises a body, a bottom surface, an end face and a side.One light enters body via at least a portion of bottom surface.At least a portion of end face reflects described light, and the end face centre has a recess.The side links bottom surface and end face, and at least part of light leaves body via the side.Body comprises a base material and at least one interpolation material, and base material is inequality with the refraction coefficient that adds material, and the percentage by weight of interpolation material is between 0.5% to 15%.
In one embodiment, body essence is in the form of annular discs.
In one embodiment, the bottom surface has an inner concave.
In one embodiment, the bottom surface also has a planar portions, planar portions be positioned at inner concave around.
In one embodiment, planar portions has a micro-structural.
In one embodiment, the bottom surface also has a supporting part, and supporting part outwards protrudes.
In one embodiment, the recess of end face is symmetrical arranged according to a central shaft of body.
In one embodiment, end face also has a planar portions, and described planar portions is between described recess and described side.
In one embodiment, the tangent slope of recess is for just or for negative or by just to negative.
In one embodiment, base material comprises a macromolecular material.
In one embodiment, add material and comprise polymethyl methacrylate (PMMA) or aluminium oxide.
In one embodiment, led lens also comprises a light absorbing part, and itself and bottom surface link, and light absorbing part is gradually-reducing shape along the direction away from the bottom surface.
From the above, in led lens of the present invention, the end face centre has a recess, can promote the usefulness of light reflection by recess.In addition, body comprises a base material and at least one interpolation material, and base material is inequality with the refraction coefficient that adds material, and the percentage by weight of interpolation material is between 0.5% to 15%.By the mix and match of high and low refraction coefficient, can reduce dazzle, reduce single-point and go out luminous intensity and the usefulness of light diffusion is improved.By above-mentioned feature, led lens of the present invention solves the problem that light is inhomogeneous and dazzle is too strong, and then promotes luminous efficacy.
Description of drawings
Figure 1A is the cross-sectional schematic of a kind of led lens of first embodiment of the invention;
Figure 1B to Fig. 1 F is the schematic diagram of different micro-structurals of a kind of led lens of first embodiment of the invention;
Fig. 2 is the schematic side view of a kind of led lens of second embodiment of the invention;
Fig. 3 is the schematic side view of a kind of led lens of third embodiment of the invention;
Fig. 4 is the schematic side view of a kind of led lens of fourth embodiment of the invention;
Fig. 5 is the schematic side view of a kind of led lens of fifth embodiment of the invention; And
Fig. 6 is the schematic side view of a kind of led lens of sixth embodiment of the invention.
The main element symbol description:
1,1a～1e: led lens
11: body
12: the bottom surface
121: inner concave
122: planar portions
123: supporting part
13: end face
131: recess
132: planar portions
14: the side
15: light absorbing part
2: LED core
M1～M5: micro-structural
Embodiment
Hereinafter with reference to relevant drawings, a kind of led lens according to the preferred embodiment of the present invention is described, wherein components identical will be illustrated with the components identical symbol.
Figure 1A is the cross-sectional schematic of a kind of led lens 1 of first embodiment of the invention, and it comprises a body 11, a bottom surface 12, an end face 13 and a side 14.Wherein, bottom surface 12 is positioned at a bottom side of body 11, and end face 13 is positioned at a top side of body 11, and side 14 is positioned at an avris of body 11.
In the present embodiment, body 11 essence are in the form of annular discs.Body 11 comprises a base material and at least one interpolation material, and base material is inequality with the refraction coefficient that adds material.For example the refraction coefficient of base material is higher, and the refraction coefficient that adds material is lower; Perhaps, the refraction coefficient of base material is lower, and the refraction coefficient that adds material is higher.By the mix and match of high and low refraction coefficient, can reduce dazzle, reduce single-point and go out luminous intensity and the usefulness of light diffusion is improved.
The percentage by weight that adds material can be between 0.5% to 15%.Wherein, base material for example comprises a macromolecular material, and macromolecular material can for example be Merlon (PC) or polymethyl methacrylate (PMMA).Add material and for example comprise aluminium oxide; Perhaps when base material does not comprise polymethyl methacrylate, add material and can comprise polymethyl methacrylate.Base material with add material can be by fusion or the mode that mixes, ejection formation and make body 11.Add material and can be diffusion particle.
One light enters body 11 via at least a portion of bottom surface 12.In the present embodiment, bottom surface 12 has an inner concave 121.Bottom surface 12 also can have a planar portions 122, planar portions 122 be positioned at inner concave 121 around, namely planar portions 122 be the annular.Planar portions 122 can have a micro-structural M1 (as shown in Figure 1B), micro-structural M1 is example with the zigzag, in addition, micro-structural also can have other geometry, and for example the micro-structural M2 shown in Fig. 1 C is that the micro-structural M3 shown in corrugated surface (evagination), Fig. 1 D is that the micro-structural M4 shown in relief (evagination), Fig. 1 E is that the micro-structural M5 shown in corrugated surface (indent), Fig. 1 F is relief (indent) etc.When planar portions 122 has micro-structural, but planar portions 122 reflection rays make part light penetrate from end face 13, can promote outgoing light homogeneity whereby; When planar portions 122 did not have micro-structural, part light can penetrate from planar portions 122, can strengthen the rising angle of led lens 1 whereby.In addition, the technical characterictic of micro-structural also can be applicable to all embodiment of the present invention.
At least a portion reflection ray of end face 13, end face 13 centre have a recess 131.In this, recess 131 is symmetrical arranged according to a central shaft of body in fact.The tangent slope of recess 131 by the center toward the direction at edge, just can be or for negative or by just to negative, in this, if with the right-hand part of Figure 1A center dant 131, its tangent slope is served as reasons just to zero.This for for example, is not in order to limit the present invention only.
According to above-mentioned, light (for example being sent by light-emitting diode) can enter body 11,14 bright dippings from the side via the reflection of end face 13 by the bottom surface 12 of the led lens 1 of present embodiment.If the planar portions 122 of bottom surface 12 has micro-structural, then part light can be from end face 13 bright dippings; If the planar portions 122 of bottom surface 12 does not have micro-structural, then part light can be from planar portions 122 bright dippings.Mix and match by led lens 1 structural design and high and low index of refraction material can reduce dazzle, reduces single-point and goes out luminous intensity and the usefulness of light diffusion is improved, and then promote luminous efficacy.
Fig. 2 is the schematic side view of a kind of led lens 1a of second embodiment of the invention.Be that with the first embodiment main difference end face 13 of led lens 1a also has a planar portions 132, planar portions 132 is between recess 131 and side 14.In this, vertical with side 14 in fact with planar portions 132 is example.
Fig. 3 is the schematic side view of a kind of led lens 1b of third embodiment of the invention.Be with the second embodiment main difference, the scope of the planar portions 132 of the end face 13 of led lens 1b is bigger than the scope of the planar portions 132 of led lens 1a, and the radius of curvature of the recess 131 of the end face 13 of led lens 1b is littler than the radius of curvature of the recess 132 of led lens 1a.
Fig. 4 is the schematic side view of a kind of led lens 1c of fourth embodiment of the invention.Be with above-described embodiment main difference, the tangent slope of the recess 131 of the end face 13 of led lens 1c just serve as reasons to negative or by negative to just, namely crossing over slope is zero, and makes the profile of center to side 14 of end face 13 become a curve.In this, as if the right-hand part with Fig. 4 center dant 131, its tangent slope is served as reasons just to negative.
Fig. 5 is the schematic side view of a kind of led lens 1d of fifth embodiment of the invention.Be that with the first embodiment main difference bottom surface 12 of led lens 1d also has a supporting part 123, supporting part 123 is outwards protruded by body, refers to protrude towards the direction away from end face 13 in this.Supporting part 123 is ring-type, and be positioned at bottom surface 12 inner concave 121 around.By the setting of supporting part 123, a LED core 2 is placed in the supporting part 123, and then makes product reach slimming.Wherein, LED core 2 can be arranged on the circuit board (figure does not show), and circuit board can be linked to supporting part 123.In addition, LED core 2 also can be arranged in the inner concave 121 of bottom surface 12 of above-mentioned all led lens.
Fig. 6 is the schematic side view of a kind of led lens 1e of sixth embodiment of the invention.Be that with above-described embodiment main difference led lens 1e also comprises a light absorbing part 15, light absorbing part 15 links with bottom surface 12, and light absorbing part 15 is gradually-reducing shape along the direction away from bottom surface 12.Light absorbing part 15 can be hollow body, and its inner surface can plate reflectance coating.Light absorbing part 15 can be an independent member or with body 1 one-body molded making.It is interior or outer that LED core 2 can be arranged at light absorbing part 15; In this, LED core 2 is example to be arranged at outside the light absorbing part 15.Light absorbing part 15 can be applicable to the led lens of above-mentioned all embodiment.
By the led lens of above-mentioned different embodiment, what can allow led lens goes out more changeableization of light effect, and then expands its application.In addition, the led lens of all embodiment of the present invention can be applicable to the LED core of wide-angle bright dipping, for example is the rising angle greater than 120 degree.
In sum, in led lens of the present invention, the end face centre has a recess, can promote the usefulness of light reflection by recess.In addition, body comprises a base material and at least one interpolation material, and base material is inequality with the refraction coefficient that adds material, and the percentage by weight of interpolation material is between 0.5% to 15%.By the mix and match of high and low refraction coefficient, can reduce dazzle, reduce single-point and go out luminous intensity and the usefulness of light diffusion is improved.By above-mentioned feature, led lens of the present invention solves the problem that light is inhomogeneous and dazzle is too strong, and then promotes luminous efficacy.
The above only is illustrative, and non-limiting.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be included in the claim institute restricted portion.
Claims (12)
1. a led lens is characterized in that, comprising:
One body;
One bottom surface, a light enters described body via at least a portion of described bottom surface;
One end face, its at least a portion reflects described light, and described end face centre has a recess; And
One side links described bottom surface and described end face, and at least part of described light leaves described body via described side,
Wherein, described body comprises a base material and at least one interpolation material, and the refraction coefficient of described base material and described interpolation material is inequality, and the percentage by weight of described interpolation material is between 0.5% to 15%.
2. led lens according to claim 1 is characterized in that, described body essence is in the form of annular discs.
3. led lens according to claim 1 is characterized in that, described bottom surface has an inner concave.
4. led lens according to claim 3 is characterized in that, described bottom surface also has a planar portions, described planar portions be positioned at described inner concave around.
5. led lens according to claim 4 is characterized in that, described planar portions has a micro-structural.
6. led lens according to claim 1 is characterized in that, described bottom surface also has a supporting part, and described supporting part outwards protrudes.
7. led lens according to claim 1 is characterized in that, the described recess of described end face is symmetrical arranged according to a central shaft of described body.
8. led lens according to claim 1 is characterized in that, described end face also has a planar portions, and described planar portions is between described recess and described side.
9. led lens according to claim 1 is characterized in that, the tangent slope of described recess is for just or for negative or by just to negative.
10. led lens according to claim 1 is characterized in that, described base material comprises a macromolecular material.
11. led lens according to claim 1 is characterized in that, described interpolation material comprises polymethyl methacrylate or aluminium oxide.
12. led lens according to claim 1 is characterized in that, also comprises:
One light absorbing part links with described bottom surface, and described light absorbing part is gradually-reducing shape along the direction away from described bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100150974A CN103208581A (en) | 2012-01-17 | 2012-01-17 | Light emitting diode lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100150974A CN103208581A (en) | 2012-01-17 | 2012-01-17 | Light emitting diode lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103208581A true CN103208581A (en) | 2013-07-17 |
Family
ID=48755733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100150974A Pending CN103208581A (en) | 2012-01-17 | 2012-01-17 | Light emitting diode lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103208581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344274A (en) * | 2013-07-25 | 2015-02-11 | 展晶科技(深圳)有限公司 | Backlight module |
| CN104806975A (en) * | 2014-01-27 | 2015-07-29 | 璨圆光电股份有限公司 | Light source device |
| CN110257932A (en) * | 2019-07-10 | 2019-09-20 | 华南理工大学 | A kind of luminous coloration monofilament and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101075655A (en) * | 2007-06-05 | 2007-11-21 | 诸建平 | Generator of white-light surface light source |
| CN101490465A (en) * | 2006-07-11 | 2009-07-22 | 株式会社光波 | Light source module, surface area light-emitting unit, and surface area light-emitting device |
| TWM396929U (en) * | 2010-06-14 | 2011-01-21 | Soogug Technology Co Ltd | Light guide structure having multiple light exit surfaces |
| WO2011084001A2 (en) * | 2010-01-07 | 2011-07-14 | 서울반도체주식회사 | Aspheric led lens and a light emitting device including the same |
| TWM409372U (en) * | 2011-01-04 | 2011-08-11 | Ya-Ling Lin | LED light-emitting device |
-
2012
- 2012-01-17 CN CN2012100150974A patent/CN103208581A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101490465A (en) * | 2006-07-11 | 2009-07-22 | 株式会社光波 | Light source module, surface area light-emitting unit, and surface area light-emitting device |
| CN101075655A (en) * | 2007-06-05 | 2007-11-21 | 诸建平 | Generator of white-light surface light source |
| WO2011084001A2 (en) * | 2010-01-07 | 2011-07-14 | 서울반도체주식회사 | Aspheric led lens and a light emitting device including the same |
| TWM396929U (en) * | 2010-06-14 | 2011-01-21 | Soogug Technology Co Ltd | Light guide structure having multiple light exit surfaces |
| TWM409372U (en) * | 2011-01-04 | 2011-08-11 | Ya-Ling Lin | LED light-emitting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344274A (en) * | 2013-07-25 | 2015-02-11 | 展晶科技(深圳)有限公司 | Backlight module |
| CN104806975A (en) * | 2014-01-27 | 2015-07-29 | 璨圆光电股份有限公司 | Light source device |
| CN110257932A (en) * | 2019-07-10 | 2019-09-20 | 华南理工大学 | A kind of luminous coloration monofilament and preparation method thereof |
| CN110257932B (en) * | 2019-07-10 | 2023-05-02 | 华南理工大学 | Luminous color-changing monofilament and preparation method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130717 |