CN103775966A - Lens and light source module with same - Google Patents
Lens and light source module with same Download PDFInfo
- Publication number
- CN103775966A CN103775966A CN201210405002.XA CN201210405002A CN103775966A CN 103775966 A CN103775966 A CN 103775966A CN 201210405002 A CN201210405002 A CN 201210405002A CN 103775966 A CN103775966 A CN 103775966A
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- lens
- light source
- joint face
- raised
- raised line
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Abstract
The invention relates to a lens. The lens is used for performing correction on the light emitted from a light source; the lens comprises the first curved surface and the second curved surface which cover the light source in turn; the bottom periphery of the first curved surface and the bottom periphery of the second curved surface are located on the same horizontal plane and connected into the connection surface; a plurality of first protruding strips and a plurality of second protruding strips are formed on the connection surface and are half-cylindrical-shaped; the plurality of first protruding strips are parallel to each other separately; the plurality of second protruding strips are parallel to each other separately; the plurality of first protruding strips and the plurality of second protruding strips are staggered with each other. The invention also relates to a light source module with the lens.
Description
Technical field
The present invention relates to optical field, relate in particular to a kind of lens and there is the light source module of these lens.
Background technology
Utilize its effect of light fixture of conventional light source substantially can meet the demand of various aspects, still power consumption is too large, and therefore light emitting diode (LED, Light Emitting Diode) has the trend that replaces gradually conventional light source as light source of new generation.
In existing LED light source module conventionally light source outside covering one lens with the angular distribution of original light of being used for changing light source and sending.Existing lens generally comprise two curved surfaces, near a less curved surface of light source and away from light source one compared with large curved surface, compared with large curved surface, less curved surface is covered at completely compared with large curved surface inside, two curved surfaces are connected to form a horizontal bottom in bottom surface.And due to the existence of this horizontal bottom, make part light that light source sends lens scattering-in to after on this bottom surface through reflection and towards specific single direction outgoing, affect light shape and distribute and do not reach the wide-angle of expection.Therefore how in guaranteeing the power savings advantages of performance light emitting diode, light shape being distributed reach the wide-angle effect of expection is also a problem demanding prompt solution.Thus, in LED source design, the demand of secondary optical design highlights day by day.
Summary of the invention
In view of this, be necessary to provide a kind of light source module that can make light emitting diode there are the lens of larger shooting angle and adopt these lens.
A kind of lens, it is proofreaied and correct for the light that light source is sent, these lens comprise for being located at successively first surface and the second curved surface on light source, the bottom peripheral edge of the bottom peripheral edge of first surface and the second curved surface is in same level and connect into joint face, on this joint face, form some the first raised lines and some the second raised lines, this first raised line and the second raised line are semicircle cylindricality, these some first raised lines interval that is parallel to each other, these some second raised lines interval that is parallel to each other, these some first raised lines and the second raised line are interlaced.
A kind of lens, it is proofreaied and correct for the light that light source is sent, these lens comprise the joint face near light source, on this joint face, form some the first raised lines and some the second raised lines, this first raised line and the second raised line are semicircle cylindricality, these some first raised lines interval that is parallel to each other, these some second raised lines interval that is parallel to each other, these some first raised lines and the second raised line are interlaced.
A kind of light source module that comprises lens as above.
The light source module of the lens of embodiment of the present invention and this kind of lens of employing, when light directive lens that light source sends, part light in the time of the inner directive joint face of lens after the reflex of the first raised line and the second raised line to all angles outgoing, increase the rising angle of emergent ray, and make emergent ray more even.
Accompanying drawing explanation
The schematic perspective view of the lens in the light source module that Fig. 1 provides for embodiment of the present invention.
Fig. 2 is that the lens in Fig. 1 coordinate the light source module of light source composition along the cutaway view of II-II direction in Fig. 1.
The briliancy distribution map of the light source module that Fig. 3 provides for embodiment of the present invention.
Main element symbol description
| |
100 |
| |
10 |
| |
20 |
| |
21 |
| Curved |
211 |
| |
212 |
| The second |
22 |
| |
221 |
| Cambered |
222 |
| |
223 |
| The first raised |
231 |
| The second raised line | 232 |
| |
23 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Refer to Fig. 1 and Fig. 2, the light source module 100 that embodiment of the present invention provides comprises light source 10 and lens 20.Described light source 10 is light emitting diode.
Described lens 20 comprise first surface 21, the second curved surface 22 and the joint face 23 that is connected this first surface 21 and the second curved surface 22.Described the second curved surface 22 is located at first surface 21 tops, and both bottom peripheral edge is in the same plane and connected by joint face 23.
Described first surface 21 is directly located on light source 10.This first surface 21 comprises from joint face 23 and forms a curved inner wall 211 and a tip 212 to lens 20 inner recess, this curved inner wall 211 and tip 212 smooth connections.In the present embodiment, the profile of this curved inner wall 211 is roughly an ellipsoid, and this tip 212 is further to form to the entity inner recess of lens 20 from the top of curved inner wall 211.This curved inner wall 211 is reduced by joint face 23 gradually along the slope in the cross section on the optical axis direction of lens 20, and this tip 212 is increased by curved inner wall 211 gradually along the slope in the cross section on the optical axis direction of lens 20.This first surface 21 summit O1 are the summit of tip 212, and it is positioned on the optical axis of lens 20 and on the axis of light source 10.The bottom peripheral edge of this first surface 21 is positioned on joint face 23, and the bottom of curved inner wall 211 is positioned on joint face 23.When this first surface 21 of light directive that light source 10 sends, forward light is through the backward lens 20 sidepiece deflections of refraction action of tip 212, thereby forward light guide is disperseed to lens 20 side direction, is conducive to make outgoing equalizing light rays.
Described the second curved surface 22 is located at first surface 21 tops.The central point O2 of this second curved surface 22 is positioned on the optical axis of lens 20 and on the axis of light source 10.This second curved surface 22 comprises the cambered surface 222 of the concave surface 221, concave surface 221 peripheries that are positioned at center of top and the side 223 around lens 20 sidepieces.This concave surface 221 is positioned at the central authorities of lens 20, and just the summit O1 to first surface 21 and light source 10.This concave surface 221 can be the arc surface of indent etc., for dispersing the forward light that arrives concave surface 221.This cambered surface 222 is the curved surface protruding to the direction away from light source 10, and the curvature of this cambered surface 222 is greater than the curvature of concave surface 221.The bottom peripheral edge of the bottom peripheral edge of this second curved surface 22 and first surface 21 is co-located on joint face 23, and both are connected by joint face 23.
Described joint face 23 is near light source 10, and on it, towards be convexly equipped with some staggered raised lines away from the direction of the second curved surface 22, described joint face 23 comprises some the first raised lines 231 and some the second raised lines 232.Some the first raised lines 231 interval that is parallel to each other, some the second raised lines 232 interval that is parallel to each other.The shape of each the first raised line 231 is identical with the shape of each the second raised line 232, is semicircle cylindricality.Below one first raised line 231 is described for example.The cross sectional shape of this first raised line 231 is semicircle, and this semicircular center of circle is positioned on joint face 23, and this semicircular radius is 0.1 millimeter (mm), and the solstics that this first raised line 231 protrudes is 0.1 millimeter (mm) apart from the distance of joint face 23.These some first raised lines 231 are arranged take 0.6 millimeter (mm) as cycle, linear array and are covered with on joint face 23, that is, between the center of circle of every adjacent two the first parallel raised lines 231, distance is apart 0.6 millimeter (mm).In the present embodiment, some the second raised lines 232 are parallel to each other, and with these the first raised line 231 vertical interlaceds.These some second raised lines 232 are take 0.6 millimeter (mm) as periodic linear array arrangement and be covered with on joint face 23, that is, between the center of circle of every adjacent two the second parallel raised lines 232, distance is apart 0.6 millimeter (mm).These first raised lines 231 and second raised line 232 is interlaced is roughly " well " font.In other embodiments, the first raised line 231 and the second raised line 232 also can be for tilting to intersect.
When light directive lens 20 that light source 10 sends, part light is at the inner directive joint face 23 of lens 20 and arrive the first raised line 231 and the second raised line 232, because the first raised line 231 and the second raised line 232 are the staggered semicircle raised line from joint face 23 projections, therefore when the uneven surface of these first raised lines 231 of light directive and the second raised line 232, due to the angle of incidence of light difference of every bit in semicircle, these first raised lines 231 of directive and the second raised line 232 glazed threads are reflected with different shooting angles, and then to all angles outgoing, increase the rising angle of emergent ray, and make emergent ray more even.
As shown in Figure 3, be the briliancy distribution map of this light source module 100.It is the brightness value difference with corresponding angle place in the difference of " 80 ° to-40 ° and 50 ° to the 80 ° weak brightness values that angle forms " is less than prior art at " 25 ° to the 20 ° the strongest brightness values that angle forms ", as can be seen here, the uniformity of these light source module 100 emergent raies is better.In addition, in experiment, be formed with the briliancy that the lens 20 of the joint face 23 of raised line locate without the lens of raised line above apart from light source 10 30 millimeters (mm) and reduce approximately 10%, and light shape angular distribution also reduces in the difference of forward and side direction rising angle, thereby make bright dipping more even.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (10)
1. lens, it is proofreaied and correct for the light that light source is sent, these lens comprise for being located at successively first surface and the second curved surface on light source, the bottom peripheral edge of the bottom peripheral edge of first surface and the second curved surface is in same level and connect into joint face, it is characterized in that: on this joint face, form some the first raised lines and some the second raised lines, this first raised line and the second raised line are semicircle cylindricality, these some first raised lines interval that is parallel to each other, these some second raised lines interval that is parallel to each other, these some first raised lines and the second raised line are interlaced.
2. lens as claimed in claim 1, is characterized in that: the radial section of each the first raised line is that radius is the semicircle of 0.1 millimeter, and the center of circle of this semicircle is positioned on joint face, and the maximum height that this first raised line protrudes joint face is 0.1 millimeter.
3. lens as claimed in claim 2, is characterized in that: the semi-cylindrical center of circle of every adjacent two first raised lines is at a distance of 0.6 millimeter.
4. the lens as described in claims 1 to 3 any one, is characterized in that: the radial section of each the second raised line is that radius is the semicircle of 0.1 millimeter, and the center of circle of this semicircle is positioned on joint face, and the maximum height that this second raised line protrudes joint face is 0.1 millimeter.
5. lens as claimed in claim 4, is characterized in that: the semi-cylindrical center of circle of every adjacent two second raised lines is at a distance of 0.6 millimeter.
6. lens as claimed in claim 1, it is characterized in that: described first surface comprises that the entity inner recess to lens forms a curved inner wall and a tip from joint face, this tip is positioned at the top of curved inner wall, this curved inner wall is reduced by joint face gradually along the slope in axis of lens cross section upwards, and this tip is increased by curved inner wall gradually along the slope in axis of lens cross section upwards.
7. the lens as described in claim 1 or 6, it is characterized in that: described the second curved surface is located at first surface top, this second curved surface comprises the cambered surface of the concave surface, the concave surface periphery that are positioned at center of top and the side around lens sidepiece, this concave surface is towards the direction depression of light source, this cambered surface is protruded to the direction away from light source, and the bottom margin of this side is positioned on joint face.
8. lens, it is proofreaied and correct for the light that light source is sent, these lens comprise the joint face near light source, it is characterized in that: on this joint face, form some the first raised lines and some the second raised lines, this first raised line and the second raised line are semicircle cylindricality, these some first raised lines interval that is parallel to each other, these some second raised lines interval that is parallel to each other, these some first raised lines and the second raised line are interlaced.
9. a light source module, it comprises light source and the lens as described in claim 1-8.
10. light source module as claimed in claim 9, is characterized in that: described light source is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405002.XA CN103775966A (en) | 2012-10-23 | 2012-10-23 | Lens and light source module with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405002.XA CN103775966A (en) | 2012-10-23 | 2012-10-23 | Lens and light source module with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103775966A true CN103775966A (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210405002.XA Pending CN103775966A (en) | 2012-10-23 | 2012-10-23 | Lens and light source module with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103775966A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423161A (en) * | 2016-01-05 | 2016-03-23 | 东莞轩朗实业有限公司 | Point light source and manufacturing method for lens thereof |
| CN105674209A (en) * | 2014-11-19 | 2016-06-15 | 广东瑞捷光电股份有限公司 | Optical lens, light bar and direct type backlight module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285561A (en) * | 2007-04-10 | 2008-10-15 | 株式会社小糸制作所 | Lamp unit for vehicle |
| US20100254145A1 (en) * | 2009-04-03 | 2010-10-07 | Panasonic Corporation | Lighting device |
| CN101949494A (en) * | 2009-07-10 | 2011-01-19 | 富准精密工业(深圳)有限公司 | Light-emitting assembly |
| CN102003638A (en) * | 2009-04-27 | 2011-04-06 | 恩普乐股份有限公司 | Light emitting apparatus, surface light source apparatus and display apparatus |
-
2012
- 2012-10-23 CN CN201210405002.XA patent/CN103775966A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285561A (en) * | 2007-04-10 | 2008-10-15 | 株式会社小糸制作所 | Lamp unit for vehicle |
| US20100254145A1 (en) * | 2009-04-03 | 2010-10-07 | Panasonic Corporation | Lighting device |
| CN102003638A (en) * | 2009-04-27 | 2011-04-06 | 恩普乐股份有限公司 | Light emitting apparatus, surface light source apparatus and display apparatus |
| CN101949494A (en) * | 2009-07-10 | 2011-01-19 | 富准精密工业(深圳)有限公司 | Light-emitting assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674209A (en) * | 2014-11-19 | 2016-06-15 | 广东瑞捷光电股份有限公司 | Optical lens, light bar and direct type backlight module |
| CN105423161A (en) * | 2016-01-05 | 2016-03-23 | 东莞轩朗实业有限公司 | Point light source and manufacturing method for lens thereof |
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Application publication date: 20140507 |
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