CN102410492A - Lens and light-emitting diode module - Google Patents
Lens and light-emitting diode module Download PDFInfo
- Publication number
- CN102410492A CN102410492A CN2010102894725A CN201010289472A CN102410492A CN 102410492 A CN102410492 A CN 102410492A CN 2010102894725 A CN2010102894725 A CN 2010102894725A CN 201010289472 A CN201010289472 A CN 201010289472A CN 102410492 A CN102410492 A CN 102410492A
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- lens
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- exiting surface
- emitting diode
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Abstract
The invention relates to a lens, which comprises a bottom plane, an emergent plane which is opposite to the bottom plane, and a reflection side plane which connects the bottom plane with the emergent plane. The emergent plane comprises a first emergent plane which is positioned at the center and a second emergent plane which surrounds the first emergent plane. The bottom plane is provided with an accommodating groove, the inner wall of the accommodating groove is the incident plane of the lens, and the incident plane comprises a first incident plane which is opposite to the first emergent plane and a second incident plane which is opposite to the second emergent plane. The first incident plane and the first emergent plane form a convex lens part, the reflection side plane is a paraboloid, the paraboloid and the reflection side plane have the same central axis and the same focal point, and the focal point is positioned in the accommodating groove. The invention further relates to a light-emitting diode module which is provided with the lens.
Description
Technical field
The present invention relates to a kind of optical element, be meant a kind of lens especially and use the light emitting diode module of these lens.
Background technology
As a kind of emerging light source, light emitting diode relies on high, the advantages such as volume is little, in light weight, environmental protection of its luminous efficiency, has been widely applied in the middle of the current every field, has much the trend that replaces conventional light source.Yet light emitting diode is similar to a spot light, and its emergent ray has certain angle of divergence, does not add the optical design difficulty and is used for remote illumination.
Summary of the invention
In view of this, be necessary to provide a kind of lens that can dwindle the light source angle of divergence, and the light emitting diode module of using these lens.
A kind of lens, it comprises a bottom surface, an exiting surface relative with said bottom surface and the mirrored sides that is connected said bottom surface and exiting surface.Said exiting surface comprises that first exiting surface that is positioned at its central authorities reaches second exiting surface around this first exiting surface.Said bottom surface has an accepting groove, and the inwall of this accepting groove is the plane of incidence of lens, and this plane of incidence comprises first plane of incidence corresponding with said first exiting surface and second plane of incidence corresponding with said second exiting surface.Said first plane of incidence and first exiting surface are formed a convex lens portions, and said mirrored sides is a parabola, and this convex lens portions has identical central shaft and identical focus with mirrored sides, and this focus is positioned at accepting groove.
A kind of light emitting diode module, it comprises that light emitting diode reaches and the lens of its collocation.These lens comprise a bottom surface, an exiting surface relative with said bottom surface and the mirrored sides that is connected said bottom surface and exiting surface.Said exiting surface comprises that first exiting surface that is positioned at its central authorities reaches second exiting surface around this first exiting surface.Said bottom surface has an accepting groove, and the inwall of this accepting groove is the plane of incidence of lens, and this plane of incidence comprises first plane of incidence corresponding with said first exiting surface and second plane of incidence corresponding with said second exiting surface.Said first plane of incidence and first exiting surface are formed a convex lens portions, and said mirrored sides is a parabola, and this convex lens portions has identical central shaft and identical focus with mirrored sides, and this focus is positioned at accepting groove.Said light emitting diode is contained in the said accepting groove and is located at said along; A part of light that said light emitting diode sends gets into lens from said first plane of incidence and penetrates from first exiting surface; Another part light penetrates from second exiting surface through the mirrored sides reflection after getting into lens from second plane of incidence.
Compared with prior art; Because said convex lens portions has identical central shaft and identical focus with said mirrored sides; The light that said light emitting diode sends is no matter be to reflect through convex lens portions; Still all be approximately directional light through mirrored sides reflection back from the second exiting surface outgoing, therefore, the emergent ray of lens has the very little angle of divergence.
Description of drawings
The schematic perspective view of the lens that Fig. 1 provides for embodiment of the present invention.
The cutaway view of the light emitting diode module that Fig. 2 provides for embodiment of the present invention.
The main element symbol description
Light emitting diode module 100
Light-emitting diode chip for backlight unit 22
Exiting surface 32
Mirrored sides 33
The plane of incidence 34
Accepting groove 311
First exiting surface 321
Second exiting surface 322
First plane of incidence 341
Second plane of incidence 342
The specific embodiment
Below will combine accompanying drawing that the present invention is done further detailed description.
See also Fig. 1 and Fig. 2, the light emitting diode module 100 that embodiment of the present invention provides comprises circuit board 10, is arranged on the light emitting diode 20 on the circuit board 10 and is located at the lens 30 on the light emitting diode 20.
In this embodiment, said light emitting diode 20 comprises encapsulation base 21, light-emitting diode chip for backlight unit 22 and packaging body 23.Said encapsulation base 21 has opposite first 211 and second surface 212, and wherein, said second surface 212 is towards said circuit board 10.Said light-emitting diode chip for backlight unit 22 is sticked on the first surface 211 of encapsulation base 21, and said packaging body 23 is formed on the first surface 211 of encapsulation base 21 and coats said light-emitting diode chip for backlight unit 22.The mixing of one or more in the be selected from epoxy resin of said packaging body 23, the silicones etc.Also can be doped with fluorescent material in the said packaging body 23, said fluorescent material can be selected from one or more the combination in yttrium-aluminium-garnet, terbium yttrium-aluminium-garnet, nitride, sulfide and the silicate.Said light emitting diode 20 can be fixed on the circuit board 10 through modes such as surface mount, and is electrically connected with circuit board 10.
Said lens 30 comprise one towards the bottom surface of circuit board 10 31, one exiting surface 32 relative and the mirrored sides 33 that is connected said bottom surface 31 and exiting surface 32 with said bottom surface 31.In this embodiment, said bottom surface 31 is circle with exiting surface 32, and said mirrored sides 33 is one to have the parabola of albedo.
Said exiting surface 32 comprises first exiting surface 321 of being positioned at its central authorities and around second exiting surface 322 of this first exiting surface 321.In this embodiment, said first exiting surface 321 is a convex surface, and said second exiting surface 322 is a plane.Said first exiting surface 321 has identical central shaft with mirrored sides 33, and said second exiting surface 322 is vertical with the central shaft of said first exiting surface 321.
Said bottom surface 31 central authorities have an accepting groove 311, and said light emitting diode 20 is contained in this accepting groove 311.Because light emitting diode 20 is housed in this accepting groove 311, on the one hand, the bottom surface 31 of said lens 30 can directly be fixed on the circuit board 10 through viscose glue etc., thereby need not to adopt other supporting constructions to fix lens 30; On the other hand, light emitting diode 20 nearly all emergent lights all can incide in the lens 30.The inwall of said accepting groove 311 is formed the plane of incidence 34 of lens 30, and this plane of incidence 34 comprises with said first exiting surface, the 321 first corresponding planes of incidence 341 and reaching and the second corresponding plane of incidence 342 of said second exiting surface 322.In this embodiment, said accepting groove 311 is cylindric, and said first plane of incidence 341 is the planes that are positioned at the top of accepting groove 311, and said second plane of incidence 342 is positioned at the side of accepting groove 311.Said light emitting diode 20 incides the light of first plane of incidence 341 can be from 321 outgoing of said first exiting surface, the light that said light emitting diode 20 incides second plane of incidence 342 through the mirrored sides 33 reflection backs of lens 30 from 322 outgoing of said second exiting surface.
The albedo of said mirrored sides 33 can be reached through coating reflectance coating on mirrored sides 33; Or utilize total reflection principle to reach; That is, make incidence angle that light emitting diode 20 incides the light on the mirrored sides 33 all greater than the cirtical angle of total reflection of lens 30 materials.
Said first plane of incidence 341 and first exiting surface 321 are formed a convex lens portions; This convex lens portions has identical central shaft and identical focus with said mirrored sides 33; And this focus is positioned at accepting groove 311, and said light emitting diode 20 is located at the along of said convex lens portions and said mirrored sides 33, so; A part of light that light emitting diode 20 sends roughly becomes directional light after reflecting through convex lens portions, and another part light also roughly becomes directional light after reflecting through mirrored sides 33.
Be light reflection side 33 reflections of avoiding said light emitting diode 20 to send; And directly from 322 outgoing of said second exiting surface; In this embodiment; Less than the distance of second exiting surface 322 to the bottom surface 31 of lens 30, and any point is all crossing with mirrored sides 33 with the line at the edge of first exiting surface 321 on the light-emitting diode chip for backlight unit 22 of said light emitting diode 20 to the distance of the bottom surface 31 of lens 30 at the edge of said first exiting surface 321.
In addition, all can be for making the directional light that obtains through mirrored sides 33 reflections from the 322 direct outgoing of second exiting surface, in this embodiment, the diameter of the end that said mirrored sides 33 is connected with bottom surface 31 is less than the internal diameter of second exiting surface 322.
In this embodiment; Because said convex lens portions has identical central shaft and identical focus with said mirrored sides 33; The light that said light emitting diode 20 sends is no matter be to reflect through convex lens portions; Still all be approximately directional light through mirrored sides 33 reflection backs from 322 outgoing of second exiting surface, therefore, the emergent ray of lens 30 has the very little angle of divergence.
It is 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 claim of the present invention with distortion.
Claims (10)
1. lens; It is characterized in that: these lens comprise a bottom surface, an exiting surface relative with said bottom surface and the mirrored sides that is connected said bottom surface and exiting surface; Said exiting surface comprises that first exiting surface that is positioned at its central authorities reaches second exiting surface around this first exiting surface; Said bottom surface has an accepting groove, and the inwall of this accepting groove is the plane of incidence of lens, and this plane of incidence comprises first plane of incidence corresponding with said first exiting surface and second plane of incidence corresponding with said second exiting surface; Said first plane of incidence and first exiting surface are formed a convex lens portions; Said mirrored sides is a parabola, and this convex lens portions has identical central shaft and identical focus with mirrored sides, and this focus is positioned at accepting groove.
2. lens as claimed in claim 1 is characterized in that: said second exiting surface is a plane and vertical with the central shaft of mirrored sides.
3. lens as claimed in claim 1 is characterized in that: said first exiting surface is a convex surface, and said first plane of incidence is a plane.
4. lens as claimed in claim 1 is characterized in that: said accepting groove is cylindric, and said first plane of incidence is positioned at the top of accepting groove, and said second plane of incidence is positioned at the side of accepting groove.
5. lens as claimed in claim 1 is characterized in that: be coated with on the said mirrored sides and be coated with reflectance coating.
6. lens as claimed in claim 1 is characterized in that: the albedo of said mirrored sides is reached through total reflection principle.
7. lens as claimed in claim 3 is characterized in that: less than the distance of second exiting surface to the bottom surface of lens, and the line at the edge of the said focus and first exiting surface and mirrored sides intersect to the distance of the bottom surface of lens at the edge of said first exiting surface.
8. lens as claimed in claim 1 is characterized in that: the diameter of the end that said mirrored sides is connected with the bottom surface is less than the internal diameter of second exiting surface.
9. light emitting diode module; Comprise that light emitting diode reaches and the lens of its collocation; It is characterized in that: these lens are each described lens among the claim 1-8, and said light emitting diode is contained in the said accepting groove and is located at said along, and a part of light that said light emitting diode sends gets into lens from said first plane of incidence and penetrates from first exiting surface; Another part light penetrates from second exiting surface through the mirrored sides reflection after getting into lens from second plane of incidence.
10. light emitting diode module as claimed in claim 9 is characterized in that: said light emitting diode module also comprises a circuit board, and said light emitting diode and lens all are fixed on this circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102894725A CN102410492A (en) | 2010-09-21 | 2010-09-21 | Lens and light-emitting diode module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102894725A CN102410492A (en) | 2010-09-21 | 2010-09-21 | Lens and light-emitting diode module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102410492A true CN102410492A (en) | 2012-04-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102894725A Pending CN102410492A (en) | 2010-09-21 | 2010-09-21 | Lens and light-emitting diode module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102410492A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014079216A1 (en) * | 2012-11-23 | 2014-05-30 | Wang Haijun | Led light-emitting module |
| CN104180298A (en) * | 2013-05-27 | 2014-12-03 | 海洋王（东莞）照明科技有限公司 | Total-reflection type light projection lens and lamp using light projection lens |
| CN104180208A (en) * | 2013-05-24 | 2014-12-03 | 海洋王（东莞）照明科技有限公司 | Lamp and lens thereof |
| WO2015058521A1 (en) * | 2013-10-22 | 2015-04-30 | 深圳市中电照明股份有限公司 | Led projection-type light source |
| CN104662357A (en) * | 2012-07-27 | 2015-05-27 | 夏普株式会社 | Illumination device |
| CN105782846A (en) * | 2016-03-28 | 2016-07-20 | 广州维思车用部件有限公司 | LED automobile lighting device, LED automobile headlamp and light emitting method of LED automobile lighting device |
| CN107728376A (en) * | 2017-09-27 | 2018-02-23 | 深圳Tcl新技术有限公司 | Backlight module and display device |
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| US4767172A (en) * | 1983-01-28 | 1988-08-30 | Xerox Corporation | Collector for an LED array |
| CN200972083Y (en) * | 2006-11-30 | 2007-11-07 | 盟立光能科技股份有限公司 | Reflection mirror base |
| CN101373047A (en) * | 2007-08-20 | 2009-02-25 | 神钛光学科技股份有限公司 | Light concentration structure of LED projecting lamp |
| CN201281292Y (en) * | 2008-10-21 | 2009-07-29 | 和正丰科技股份有限公司 | Optical lens seat |
| CN101752467A (en) * | 2008-11-28 | 2010-06-23 | 财团法人车辆研究测试中心 | Non-axisymmetric led packaging structure |
| CN101771111A (en) * | 2008-12-26 | 2010-07-07 | 富准精密工业(深圳)有限公司 | Light emitting diode unit |
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2010
- 2010-09-21 CN CN2010102894725A patent/CN102410492A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4767172A (en) * | 1983-01-28 | 1988-08-30 | Xerox Corporation | Collector for an LED array |
| CN200972083Y (en) * | 2006-11-30 | 2007-11-07 | 盟立光能科技股份有限公司 | Reflection mirror base |
| CN101373047A (en) * | 2007-08-20 | 2009-02-25 | 神钛光学科技股份有限公司 | Light concentration structure of LED projecting lamp |
| CN201281292Y (en) * | 2008-10-21 | 2009-07-29 | 和正丰科技股份有限公司 | Optical lens seat |
| CN101752467A (en) * | 2008-11-28 | 2010-06-23 | 财团法人车辆研究测试中心 | Non-axisymmetric led packaging structure |
| CN101771111A (en) * | 2008-12-26 | 2010-07-07 | 富准精密工业(深圳)有限公司 | Light emitting diode unit |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662357A (en) * | 2012-07-27 | 2015-05-27 | 夏普株式会社 | Illumination device |
| WO2014079216A1 (en) * | 2012-11-23 | 2014-05-30 | Wang Haijun | Led light-emitting module |
| CN104180208A (en) * | 2013-05-24 | 2014-12-03 | 海洋王（东莞）照明科技有限公司 | Lamp and lens thereof |
| CN104180298A (en) * | 2013-05-27 | 2014-12-03 | 海洋王（东莞）照明科技有限公司 | Total-reflection type light projection lens and lamp using light projection lens |
| CN104180298B (en) * | 2013-05-27 | 2017-05-24 | 海洋王（东莞）照明科技有限公司 | Total-reflection type light projection lens and lamp using light projection lens |
| WO2015058521A1 (en) * | 2013-10-22 | 2015-04-30 | 深圳市中电照明股份有限公司 | Led projection-type light source |
| CN105782846A (en) * | 2016-03-28 | 2016-07-20 | 广州维思车用部件有限公司 | LED automobile lighting device, LED automobile headlamp and light emitting method of LED automobile lighting device |
| CN107728376A (en) * | 2017-09-27 | 2018-02-23 | 深圳Tcl新技术有限公司 | Backlight module and display device |
| CN107728376B (en) * | 2017-09-27 | 2021-02-05 | 深圳Tcl新技术有限公司 | Backlight module and display device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20120411 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |