CN103075711A - Bidirectional reflection lens light transmitting device - Google Patents
Bidirectional reflection lens light transmitting device Download PDFInfo
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- CN103075711A CN103075711A CN2012105566670A CN201210556667A CN103075711A CN 103075711 A CN103075711 A CN 103075711A CN 2012105566670 A CN2012105566670 A CN 2012105566670A CN 201210556667 A CN201210556667 A CN 201210556667A CN 103075711 A CN103075711 A CN 103075711A
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Abstract
The invention discloses a bidirectional reflection lens light transmitting device with high luminous efficiency. The device comprises a first optical lens, a second optical lens and a plurality of luminous units, wherein the first optical lens comprises a bottom, a side face extending around the bottom in the vertical direction and a top; the periphery of the top of the first optical lens is sunken towards the center of the top to form a first optical curved surface; an incident surface is formed on the bottom of the first optical lens; the second optical lens comprises a side face extending from the top of the first optical lens to the vertical direction, and a top; the periphery of the top of the second optical lens is sunken towards the center of the top to form a second optical curved surface; the radius of curvature of the first optical curved surface is greater than that of the second optical curved surface; the projections of the luminous units are uniformly distributed on the bottom of the first optical lens along the side face of the second optical lens; each luminous unit projects light transmitting outwards on the first optical curved surface and transmits the light; and each luminous unit projects light transmitting inwards on the second optical curved surface and transmits the light.
Description
Technical field
The present invention relates to a kind of electro-optical device that goes out that can improve luminous efficiency.
Background technology
In the optical design of prior art, the optical lens that goes out electro-optical device often can only be for the light towards a side outgoing, and mostly after lens inside repeatedly reflects, lose towards the light of opposite side outgoing, this has caused the low of light extraction efficiency, therefore this design is no longer suitable, and this also is the technical issues that need to address in the prior art.
Summary of the invention
In order to overcome above-mentioned shortcoming, the object of the present invention is to provide a kind of can be with outgoing behind the light reflection of opposite side outgoing, thereby the bidirectional reflectance lens that effectively improve light extraction efficiency go out electro-optical device.
In order to reach above purpose, the invention provides a kind of bidirectional reflectance lens and go out electro-optical device, comprise the first optical lens, the second optical lens, and a plurality of luminescence units that are coupled with described the first optical lens, the second optical lens.Described the first optical lens comprises bottom surface, the side and the end face that extend at vertical direction around described bottom surface, the end face of described the first optical lens sink to the center all around and forms the first optical surface, and the bottom surface of described the first optical lens is formed with incidence surface; Described the second optical lens comprises side and the end face that extends to vertical direction from the end face of described the first optical lens, the end face of described the second optical lens sink to the center all around and forms the second optical surface, wherein, the radius of curvature of described the first optical surface is greater than the radius of curvature of described the second optical surface; Described a plurality of luminescence unit evenly distributes along the projection of side in the bottom surface of described the first optical lens of described the second optical lens, wherein, each described luminescence unit is ray cast outgoing behind described the first optical surface of outgoing toward the outer side, towards ray cast outgoing behind described the second optical surface of inboard outgoing.
Further improve as the present invention, described the first optical lens, the second optical lens are concentric ladder cylindrical shape.
Further improve as the present invention, described a plurality of luminescence units are rounded spaced apart.
Further improve as the present invention, described a plurality of luminescence units are the LED parts.
Further improve described the first optical lens, the second optical lens one-shot forming as the present invention.
Further improve as the present invention, described the first optical lens, the second optical lens are made by glass or optical resin material.
Owing to having adopted technique scheme, so that adopt the light extraction efficiency that electro-optical device of design of the present invention higher, the energy has been saved in environmental protection greatly.
Description of drawings
Accompanying drawing 1 goes out the schematic perspective view of electro-optical device for bidirectional reflectance lens according to the present invention;
Accompanying drawing 2 goes out the front view of electro-optical device for bidirectional reflectance lens according to the present invention;
Accompanying drawing 3 is along the cross-sectional schematic of A-A in the accompanying drawing 2;
Accompanying drawing 4 is that the emergent light of general LED light fixture points to the distribution collection of illustrative plates;
Accompanying drawing 5 points to the distribution collection of illustrative plates for the emergent light that bidirectional reflectance lens according to the present invention go out electro-optical device.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
Shown in accompanying drawing 1 and accompanying drawing 2, bidirectional reflectance lens in the present embodiment go out electro-optical device, the first optical lens 1, the second optical lens 2 that comprise the ladder cylindrical shape distribution that is concentric, and a plurality of emitting led parts 3 that are coupled with the first optical lens 1, the second optical lens 2, the first optical lens 1, the second optical lens 2 are made by glass or optical resin material, the first optical lens 1,2 one-shot formings of the second optical lens.
Shown in accompanying drawing 3, the first optical lens 1 comprises bottom surface 11, the side 12 and the end face 13 that extend at vertical direction around bottom surface 11, the sagging bottom surface 11 that forms the first optical surface 14, the first optical lenses is formed with incidence surface to the center around the end face 13 of the first optical lens; The second optical lens 2 comprises side 21 and the end face 22 that extends to vertical direction from the end face 13 of the first optical lens, the end face 22 of the second optical lens sink to the center all around and forms the second optical surface 23, wherein, the radius of curvature of the first optical surface 14 is greater than the radius of curvature of the second optical surface 23; A plurality of LED parts 3 are rounded spaced apart in the projection of the bottom surface 11 of the first optical lens along the side 21 of the second optical lens.
Below in conjunction with accompanying drawing 3 operation principle of the present invention is described: in scheming, be positioned at the LED parts 3 on right side as example, the light of its outgoing comprises towards inboard outgoing (left side among the figure) and toward the outer side outgoing (right side among the figure), choose an a in numerous light of inboard outgoing, it is laggard to enter the optics lens inner via the incidence surface that is positioned at bottom surface 11, by after the reflection of the second optical surface 23 by side 21 outgoing of the second optical lens; And choose a b in numerous light of toward the outer side outgoing, it is laggard to enter the optics lens inner via the incidence surface that is positioned at bottom surface 11, by after the reflection of the first optical surface 14 by side 12 outgoing of the first optical lens; Can see since the diameter of the first optical lens 1 greater than the second optical lens 2, thereby the radius of curvature of the first optical surface 14 is greater than the radius of curvature of the second optical surface 23, thereby be projeced into the light of the first optical surface 14 from side 12 outgoing of the first optical lens, be projeced into the light of described the second optical surface 23 from side 21 outgoing of the second optical lens, the bright dipping of whole optical lens is even, and light efficiency obtains to improve.Accompanying drawing 4 is that the emergent light of general LED light fixture points to the distribution collection of illustrative plates, the half-angle of its luminous intensity is about 120 °, and the chart in the accompanying drawing 5 show bidirectional reflectance lens according to the present invention go out electro-optical device the emergent light directional property distribution situation that obtains of the optical simulation of embodiment, after using the bidirectional reflectance lens, the half-angle of luminous intensity can reach 270 ° to 315 °, thereby the luminous purpose of the full angle that reaches light fixture, demonstrate its superior even light distribution effect, in the today of advocating environmental protection, its outstanding energy saving effect should vigorously promote the use.
Above embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with technique understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (6)
1. bidirectional reflectance lens go out electro-optical device, it is characterized in that, comprising:
The first optical lens, described the first optical lens comprises bottom surface, the side and the end face that extend at vertical direction around described bottom surface, the end face of described the first optical lens sink to the center all around and forms the first optical surface, and the bottom surface of described the first optical lens is formed with incidence surface;
The second optical lens, described the second optical lens comprises side and the end face that extends to vertical direction from the end face of described the first optical lens, the end face of described the second optical lens sink to the center all around and forms the second optical surface, wherein, the radius of curvature of described the first optical surface is greater than the radius of curvature of described the second optical surface;
The a plurality of luminescence units that are coupled with described the first optical lens, the second optical lens, described a plurality of luminescence unit evenly distributes along the projection of side in the bottom surface of described the first optical lens of described the second optical lens, wherein, each described luminescence unit is ray cast outgoing behind described the first optical surface of outgoing toward the outer side, towards ray cast outgoing behind described the second optical surface of inboard outgoing.
2. bidirectional reflectance lens as claimed in claim 1 go out electro-optical device, it is characterized in that: described the first optical lens, the second optical lens are concentric ladder cylindrical shape.
3. bidirectional reflectance lens as claimed in claim 2 go out electro-optical device, it is characterized in that: described a plurality of luminescence units are rounded spaced apart.
4. bidirectional reflectance lens as claimed in claim 1 go out electro-optical device, it is characterized in that: described a plurality of luminescence units are the LED parts.
5. bidirectional reflectance lens as claimed in claim 1 go out electro-optical device, it is characterized in that: described the first optical lens, the second optical lens one-shot forming.
6. bidirectional reflectance lens as claimed in claim 1 go out electro-optical device, it is characterized in that: described the first optical lens, the second optical lens are made by glass or optical resin material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201210556667.0A CN103075711B (en) | 2012-12-20 | 2012-12-20 | Bidirectional reflection lens light transmitting device |
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CN201210556667.0A CN103075711B (en) | 2012-12-20 | 2012-12-20 | Bidirectional reflection lens light transmitting device |
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CN103075711A true CN103075711A (en) | 2013-05-01 |
CN103075711B CN103075711B (en) | 2014-10-22 |
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CN201210556667.0A Active CN103075711B (en) | 2012-12-20 | 2012-12-20 | Bidirectional reflection lens light transmitting device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104749869A (en) * | 2015-04-01 | 2015-07-01 | 苏州佳世达光电有限公司 | Projector |
CN107559617A (en) * | 2017-10-20 | 2018-01-09 | 中节能晶和照明有限公司 | A kind of light extracting LED panel light up and down |
Citations (7)
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CN1760700A (en) * | 2004-10-15 | 2006-04-19 | 三星电机株式会社 | Lens for LED light sources |
US20060262424A1 (en) * | 2005-05-23 | 2006-11-23 | Sekonix Co., Ltd. | Diffusion lens for diffusing LED light |
CN101160670A (en) * | 2005-03-29 | 2008-04-09 | 飞利浦拉米尔德斯照明设备有限责任公司 | Wide emitting lens for led useful for backlighting |
TW201122359A (en) * | 2009-12-21 | 2011-07-01 | Foxconn Tech Co Ltd | Lighting unit |
CN202118806U (en) * | 2011-06-11 | 2012-01-18 | 特殊光电科技(中山)有限公司 | Optical lens for light-emitting diode (LED) |
CN202140822U (en) * | 2011-04-27 | 2012-02-08 | 宏杰科技股份有限公司 | LED (light-emitting diode) light source module |
JP5380052B2 (en) * | 2008-11-25 | 2014-01-08 | パナソニック株式会社 | LED lighting device |
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2012
- 2012-12-20 CN CN201210556667.0A patent/CN103075711B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1760700A (en) * | 2004-10-15 | 2006-04-19 | 三星电机株式会社 | Lens for LED light sources |
CN101160670A (en) * | 2005-03-29 | 2008-04-09 | 飞利浦拉米尔德斯照明设备有限责任公司 | Wide emitting lens for led useful for backlighting |
US20060262424A1 (en) * | 2005-05-23 | 2006-11-23 | Sekonix Co., Ltd. | Diffusion lens for diffusing LED light |
JP5380052B2 (en) * | 2008-11-25 | 2014-01-08 | パナソニック株式会社 | LED lighting device |
TW201122359A (en) * | 2009-12-21 | 2011-07-01 | Foxconn Tech Co Ltd | Lighting unit |
CN202140822U (en) * | 2011-04-27 | 2012-02-08 | 宏杰科技股份有限公司 | LED (light-emitting diode) light source module |
CN202118806U (en) * | 2011-06-11 | 2012-01-18 | 特殊光电科技(中山)有限公司 | Optical lens for light-emitting diode (LED) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104749869A (en) * | 2015-04-01 | 2015-07-01 | 苏州佳世达光电有限公司 | Projector |
CN107559617A (en) * | 2017-10-20 | 2018-01-09 | 中节能晶和照明有限公司 | A kind of light extracting LED panel light up and down |
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Publication number | Publication date |
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CN103075711B (en) | 2014-10-22 |
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