CN104806974A - Optical element - Google Patents
Optical element Download PDFInfo
- Publication number
- CN104806974A CN104806974A CN201410042014.XA CN201410042014A CN104806974A CN 104806974 A CN104806974 A CN 104806974A CN 201410042014 A CN201410042014 A CN 201410042014A CN 104806974 A CN104806974 A CN 104806974A
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- CN
- China
- Prior art keywords
- optical element
- lens portion
- positive lens
- light
- curved surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Led Device Packages (AREA)
Abstract
The invention discloses an optical element. The optical element comprises a light emergent curved surface and a bottom surface which is located on the opposite side of the light emergent curved surface; the light emergent curved surface and the bottom surface are matched with each other to define a negative lens portion, two first positive lens portions and two second positive lens portions; the first positive lens portions and the second positive lens portions are arranged in a staggered mode to surround the negative lens portion; each first positive lens portion comprises the first curvature; each second positive lens portion comprises the second curvature; the second curvature is smaller than the first curvature. The optical element can be used for changing the light intensity distribution of the passing light and is applied to road lighting.
Description
Technical field
The present invention has about a kind of optical element, espespecially a kind of lens being used in street lamp.
Background technology
Light-emittingdiode (light emitting diode, LED) be a kind of semiconductor element, mainly convert electrical energy into luminous energy to reach illumination effect through semiconducting compound, therefore have that the life-span is long, stability is high and the advantage such as power consumption is little, be widely used in house, office, outdoor and action at present to throw light on, and replace traditional non-directive property light emitting source such as fluorescent tube and incandescent lamp bulb.
Be point source of light due to light-emittingdiode and there is high directivity, causing the shadow surface of light-emittingdiode narrow compared to Conventional luminescent source, if directly use as illumination, light intensity will inevitably be produced and too concentrate and the phenomenon that causes human eye discomfort.
Therefore, in the application scenario of majority, can above light-emittingdiode or around at least one optical element is set, adjust the distribution of light, to improve the problem that light intensity is too concentrated, and according to actual demand to adjust the external form profile of optical element, application demand can be met to make light type.
In the application of street lamp, owing to involving traffic safety, need on road surface, form uniform light intensity distributions, so that driver can be clear that on road surface situation everywhere when night.For achieving the above object, the light intensity peak Distribution value of traditional street lamp, from vertical direction about 60 degree, so can make more light obliquely be projected by the central authorities of side, road surface to road surface, can receive throw light on comparatively uniformly to make road surface.Although lamp socket is inclined upwardly can provide uniform illumination, makes to form direct glare in the middle of light direct projection to the sight line of human eye simultaneously, allow people easily feel tired, and it is dangerous to increase driving.Moreover the high directivity of light-emittingdiode more will can deepen the seriousness of this problem.
Summary of the invention
Described in prior art, the object of the invention is to, provide a kind of optical element, described optical element is used for changing the light intensity distributions of light passed through, and for being applied to road lighting.
For reaching above-mentioned purpose, disclosure of the present invention provides a kind of optical element, the light intensity distributions of light of described optical element in order to change light-emittingdiode and send.Optical element comprises the bottom surface that a bright dipping curved surface and is positioned at bright dipping curved surface opposition side, bright dipping curved surface and bottom surface define a negative lens portion, 2 first positive lens portions and 2 second positive lens portions, first positive lens portion and the second positive lens portion in be staggered around negative lens portion, first positive lens portion has a first curvature, second positive lens portion has a torsion, and torsion is greater than first curvature.
According to an embodiment of the present invention, optical element more comprises a side, connection bottom surface, described side and bright dipping curved surface.
According to an embodiment of the present invention, bottom surface is formed with a groove caved in towards the direction of bright dipping curved surface, and groove correspondence is positioned at below negative lens portion.
According to an embodiment of the present invention, by groove profile view it, groove is roughly in bullet-shaped.
According to an embodiment of the present invention, by groove profile view it, groove comprises the second line segment that one first line segment and is connected to the first line segment, second line segment arrange be adjacent to bright dipping curved surface, the curvature of the first line segment is greater than the curvature of the second line segment.
According to an embodiment of the present invention, bottom surface is formed with the projection that two directions in bright dipping curved surface towards the opposite are protruded.
According to an embodiment of the present invention, projection correspondence is positioned at below the second positive lens portion.
According to an embodiment of the present invention, projection becomes cylindric.
According to an embodiment of the present invention, see it by the depression angle of optical element, bottom surface is roughly rectangular.
According to an embodiment of the present invention, optical element is formed in one.
By above-mentioned, optical element of the present invention can be used to the light intensity distributions changing the light passed through, and for being applied to road lighting.
Accompanying drawing explanation
Fig. 1 is a stereogram of the optical element of disclosure of the present invention.
Fig. 2 is another stereogram of the optical element of disclosure of the present invention.
Fig. 3 is the top view of the optical element of disclosure of the present invention.
Fig. 4 is the bottom view of the optical element of disclosure of the present invention.
Fig. 5 is a sectional view of the optical element of disclosure of the present invention.
Fig. 6 is another sectional view of the optical element of disclosure of the present invention.
Fig. 7 is the corresponding distribution curve flux figure by the light of disclosure optical element of the present invention.
Detailed description of the invention
Please refer to accompanying drawings, above and extra object, feature and advantage of the present invention are understood better by through the following illustrative of preferred embodiment of the present invention and non-limiting describing in detail.
Coordinate and consult Fig. 1 and Fig. 2, be respectively the sectional view of the optical element of disclosure of the present invention.The light intensity distributions of light source of optical element 1 in order to change light-emittingdiode 5 (as shown in Figure 5) and send.Light-emittingdiode 5 has an optical axis, the central shaft of optical element 1 and described optical axis coincidence.
The external form of optical element 1 is roughly rectangular, and optical element 1 is use light-transmissive resin, such as epoxy resin or, the composition of silicones, glass or above-mentioned material by penetrate or the mode such as pressing mold forms, and preferably, optical element 1 is one-body molded.Optical element 1 comprises the bottom surface 12 that a bright dipping curved surface 10, is positioned at bright dipping curved surface 10 opposition side, and the side 14 of a connection bright dipping curved surface 10 and bottom surface 12.
Bright dipping curved surface 10 and bottom surface 12 coordinate defines negative lens portion 2,2 first positive lens portion 3 and 2 second positive lens portions 4.Negative lens portion 2 can make the light passed through have larger dispersion angle, and the first positive lens portion 3 and the second positive lens portion 4 can make the light passed through have less dispersion angle.
Coordinating and consult Fig. 3, is the top view of the optical element of disclosure of the present invention.See it by the top view angle of optical element 1, optical element 1 is roughly rectangular.First positive lens portion 3 and the second positive lens portion 4 in be staggered around negative lens portion 2, first positive lens portion 3 has a first curvature radius R1 (as shown in Figure 5), second positive lens portion 4 has a second curvature radius R2 (as shown in Figure 6), and second curvature radius R2 is greater than first curvature radius R1.Profess it, the curvature in the first positive lens portion 3 is less than the curvature in the second positive lens portion 4.Be noted that because torsion is less than first curvature at this, therefore light can be greater than the tortuous angle of the light by the second positive lens portion 4 by the tortuous angle in the first positive lens portion 3.
Coordinate and consult Fig. 4, be respectively the bottom view of the optical element of disclosure of the present invention.See it by the angle of looking up of optical element 1, optical element 1 is roughly rectangular, and more preferably, the rectangle that optical element 1 is modified in tool fillet.Consult Fig. 5 and Fig. 6 again, bottom surface 12 is formed with a groove 120 caved in towards the direction of bright dipping curved surface 10; From the profile view of groove 120 it, groove 120 roughly semicircular in shape.More accurately, groove 120 comprises one first line segment 122 and second line segment 124, second line segment 124 being connected to the first line segment 122 and arranges the curvature that the closer curvature in bright dipping curved surface 10, first line segment 122 is greater than the second line segment 124.Described groove 12 correspondence is positioned at the below of negative lens portion 2.
Light-emittingdiode 5 is mainly arranged in groove 120, and emits beam towards the direction of the first line segment 122 and the second line segment 124.Be noted that at this, curvature due to the first line segment 122 is greater than the curvature of the second line segment 124, therefore light enters optical element 1 by the first line segment 122 can be less than light by the angle of complications and enter optical element 1 by the angle of complications by the second line segment 124, use the light that light-emittingdiode 5 is sent and be passed to whole optical element 1, by the distribution curve flux of the light of optical element 1 as shown in Figure 7.In the figure 7, light-emittingdiode 5 and optical element 1 put home position shown in the figure, and the direction of 0 degree in light-emittingdiode 5 Graph-Oriented, and the optical axis of light-emittingdiode 5 overlaps with 0 degree of axle, wherein the optical axis of light-emittingdiode 5 refers to the symmetry axis that light that light-emittingdiode 5 sends distributes in space.Distribution curve flux L1 and L2 indicated in the figure 7 is respectively in order to represent by the light of optical element 1 light intensity distributions 0 degree and 90 degree axis; Can be learnt by distribution curve flux L1, the position of 0 degree of each 55 to 60 degree in both sides is mainly focused at by the light of 0 degree of axial location of optical element 1, can be learnt by distribution curve flux L2, be mainly focused at the position of 0 degree of each 70 to 80 degree in both sides by the light of 90 degree of axis of optical element 1.
In addition, bottom surface 12 is formed with the projection 126 that two directions in bright dipping curved surface 10 towards the opposite are protruded, and it is seen in visual angle as shown in Figure 2, and the outward appearance of projection 126 is cylindric, then not as limit during actual enforcement.Described projection 126 correspondence is positioned at below the second positive lens portion 4, as shown in Figure 5.Described projection 126 is mainly in order to stand on optical element 1 support in a planar S.
So the above, be only preferred embodiment of the present invention, and when not limiting scope of the invention process, namely all equalizations done according to the present patent application the scope of the claims change and modify, and all still should belong to the category of patent covering scope of the present invention intention protection.
Claims (10)
1. an optical element, use in order to arrange in pairs or groups with a light-emittingdiode, this optical element comprises the bottom surface that a bright dipping curved surface and is positioned at this bright dipping curved surface opposition side, this bright dipping curved surface and this bottom surface define a negative lens portion, 2 first positive lens portions and 2 second positive lens portions, described first positive lens portion and described second positive lens portion in be staggered around this negative lens portion, described first positive lens portion has a first curvature, described second positive lens portion has a torsion, and this torsion is less than this first curvature.
2. optical element as claimed in claim 1, is characterized in that, more comprise a side, connect this bottom surface and this bright dipping curved surface.
3. optical element as claimed in claim 1 or 2, it is characterized in that, this bottom surface is formed with a groove caved in towards the direction of this bright dipping curved surface, and this groove correspondence is positioned at below this negative lens portion.
4. optical element as claimed in claim 3, is characterized in that, by this groove profile view it, this groove is roughly in bullet-shaped.
5. optical element as claimed in claim 3, it is characterized in that, by this groove profile view it, this groove comprises the second line segment that one first line segment and is connected to this first line segment, this second line segment arranges and is adjacent to this bright dipping curved surface, and the curvature of this first line segment is greater than the curvature of this second line segment.
6. optical element as claimed in claim 1, is characterized in that, this bottom surface is formed with the projection that two directions in this bright dipping curved surface towards the opposite are protruded.
7. optical element as claimed in claim 6, it is characterized in that, described projection correspondence is positioned at below described second positive lens portion.
8. optical element as claimed in claim 7, it is characterized in that, this projection is cylindric.
9. optical element as claimed in claim 1, it is characterized in that, see it by the depression angle of this optical element, this bottom surface is roughly rectangular.
10. optical element as claimed in claim 1, it is characterized in that, this optical element is formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042014.XA CN104806974A (en) | 2014-01-29 | 2014-01-29 | Optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042014.XA CN104806974A (en) | 2014-01-29 | 2014-01-29 | Optical element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806974A true CN104806974A (en) | 2015-07-29 |
Family
ID=53692046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410042014.XA Pending CN104806974A (en) | 2014-01-29 | 2014-01-29 | Optical element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806974A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988644A (en) * | 2009-07-31 | 2011-03-23 | 富准精密工业(深圳)有限公司 | Light-emitting diode (LED) module |
| CN102748704A (en) * | 2011-04-19 | 2012-10-24 | 富准精密工业(深圳)有限公司 | Lens and illuminating device |
| CN202581120U (en) * | 2012-03-21 | 2012-12-05 | 广州市鸿利光电股份有限公司 | Light emitting diode (LED) rectangular light spot lens |
| CN103148449A (en) * | 2013-03-25 | 2013-06-12 | 苏州奥浦迪克光电技术有限公司 | LED (light emitting diode) lens with direct-lit type liquid crystal backlight |
-
2014
- 2014-01-29 CN CN201410042014.XA patent/CN104806974A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988644A (en) * | 2009-07-31 | 2011-03-23 | 富准精密工业(深圳)有限公司 | Light-emitting diode (LED) module |
| CN102748704A (en) * | 2011-04-19 | 2012-10-24 | 富准精密工业(深圳)有限公司 | Lens and illuminating device |
| CN202581120U (en) * | 2012-03-21 | 2012-12-05 | 广州市鸿利光电股份有限公司 | Light emitting diode (LED) rectangular light spot lens |
| CN103148449A (en) * | 2013-03-25 | 2013-06-12 | 苏州奥浦迪克光电技术有限公司 | LED (light emitting diode) lens with direct-lit type liquid crystal backlight |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150729 |
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| WD01 | Invention patent application deemed withdrawn after publication |