CN103883976A - Optical lens and backlight module using same - Google Patents
Optical lens and backlight module using same Download PDFInfo
- Publication number
- CN103883976A CN103883976A CN201210563712.5A CN201210563712A CN103883976A CN 103883976 A CN103883976 A CN 103883976A CN 201210563712 A CN201210563712 A CN 201210563712A CN 103883976 A CN103883976 A CN 103883976A
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- optical lens
- light
- optical
- exiting surface
- microstructures
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Abstract
An optical lens is used for diffusing light emitted from a light-emitting diode, and comprises a light ingoing face and a light outgoing face. The light outgoing face is provided with optical microstructures corresponding to the intensive light emergent position in the optical lens and used for diffusing intensive light emergent from the light outgoing face, and the optical microstructures are a plurality of projections which are arranged adjacently and formed by projecting outwards along the light outgoing direction of the light outgoing face. The invention further provides a backlight module using the optical lens. Light on two sides of an incident beam center angle is emitted from the lens after being refracted via the optical lens, the intensive light entering the optical lens is refracted via the optical microstructures on the light outgoing face of the optical lens to be diffused toward the periphery of the optical lens, and accordingly the intensive light in the optical lens is effectively diffused while light intensity of an emergent beam is effectively lowered.
Description
Technical field
The present invention relates to a kind of semiconductor light-emitting elements, particularly a kind of optical lens and use the backlight module of this optical lens.
Background technology
Light emitting diode (light emitting diode, LED) as a kind of light emitting source efficiently, there is the various features such as environmental protection, power saving, life-span length and applied to widely various fields, be particularly widely used at the back light that shows light emitting diode Chang Zuowei backlight module in imaging field.
But because the rising angle of light emitting diode is fixed (being conventionally about 120 degree left and right), the range of exposures of single light emitting diode is limited.The bright dipping of light emitting diode is simultaneously also inhomogeneous, and the light intensity that is positioned at light-emitting diodes tube hub is the strongest, along with the increase light intensity of lighting angle is weakened toward both sides gradually from center.
Summary of the invention
In view of this backlight module that, is necessary to provide a kind of optical lens that the emergent ray of light emitting diode is evenly dispersed and uses this optical lens.
A kind of optical lens, for dispersing the light that light emitting diode sends, comprise an incidence surface and an exiting surface, described exiting surface is provided with optical microstructures to the position of the intensive beam projecting in should optical lens, for dispersing the intensive light of this exiting surface outgoing, protuberance that described optical microstructures is some adjacent settings, that outwards protruded out along light direction by described exiting surface.
A kind of backlight module, comprise a light emitting diode and an optical lens, this optical lens has an incidence surface and an exiting surface, described exiting surface is provided with optical microstructures to the position of the intensive beam projecting in should optical lens, for dispersing the intensive light of this exiting surface outgoing, described optical microstructures is protuberance some adjacent settings, that outwards protruded out along light direction by described exiting surface, and this light emitting diode is positioned at a side of the incidence surface of this optical lens.
The light of incident beam central angle both sides penetrates from lens after optical lens refraction in the present invention, the intensive light of injecting in optical lens is dispersed towards the periphery of optical lens after the optical microstructures refraction on optical lens exiting surface, thereby makes the intensive light in this optical lens effectively disperse the light intensity that simultaneously effectively reduces outgoing beam.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Accompanying drawing explanation
Fig. 1 is the stereogram of the backlight module of one embodiment of the invention.
Fig. 2 is the stereogram of optical lens in backlight module shown in Fig. 1.
Fig. 3 be described in Fig. 1 backlight module along III-III line profile.
Main element symbol description
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100 |
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10 |
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101 |
| Loading end | 1011 |
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102 |
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1021 |
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103 |
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104 |
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20 |
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30 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Please also refer to Fig. 1 to Fig. 3, the backlight module 100 of one embodiment of the invention comprises light emitting diode 30 and optical lens 10, the joint face 102 that this optical lens 10 has an incidence surface 1021, an exiting surface 101 and incidence surface 1021 is connected with exiting surface 101, this light emitting diode 30 is positioned at a side of the incidence surface 1021 of this optical lens 10.Further, on this exiting surface 101, the position of the intensive beam projecting in should optical lens 10 is provided with at least one optical microstructures 20.This optical microstructures 20 is for dispersing intensive light by 101 outgoing of this exiting surface to obtain uniform bright dipping.Protuberance that described optical microstructures 20 is some adjacent settings, that outwards protruded out along light direction by described exiting surface 101.
This exiting surface 101 is cambered surface.This optical lens 10 has certain thickness, and this incidence surface 1021 passes through base material 103 physical isolations of optical lens 10 with exiting surface 101.This base material 103 be by the light transmission such as resin or glass preferably material form.
This exiting surface 101 has a smooth loading end 1011.This loading end 1011 is positioned at this exiting surface 101 central authorities.In the present embodiment, this loading end 1011 is the plane of a circle.Described at least one optical microstructures 20 is positioned on the loading end 1011 of this exiting surface 101.In other embodiments, the position that this optical microstructures 20 is arranged on this exiting surface 101 can adjust according to the variation of these optical lens 10 interior ray density.
Understandably, these exiting surface 101 central authorities form the groove of accommodating optical microstructures 20 towards the inner recess of optical lens 10 in other embodiments.
This incidence surface 1021 is a curved surface.The profile of this incidence surface 1021 is a parabola.This incidence surface 1021 is recessed to form towards the inside of optical lens 10 one by the central authorities of joint face 102.This incidence surface 1021 encloses and forms a uncovered storage tank 104 with joint face 102.This incidence surface 1021 is oppositely arranged with described optical microstructures 20, and preferably, this incidence surface 1021 and described optical microstructures 20 are just to arranging.In other embodiments, the profile of this incidence surface 1021 is the conical surface or cylinder.
This light emitting diode 30 is positioned at a side of the joint face 102 of this optical lens 10.In the present embodiment, this light emitting diode 30 arranges towards incidence surface 1021.Preferably, the optical axis O of this light emitting diode 30 overlaps with the center line of joint face 102 and exiting surface 101.Further, this light emitting diode 30 is contained in the storage tank 104 that this incidence surface 1021 and joint face 102 enclose.Understandably, in other embodiments, this incidence surface 1021 can be a plane and with concordant with this joint face 102.
In the present embodiment, this optical microstructures 20 is for being arranged in some protuberances of exiting surface 101 central authorities.In the present embodiment, described protuberance is salient point, and described salient point is hemispherical, and light is gone out by the spherical divergence of described salient point.In other embodiments, this protuberance can be centrum, rib body or other polyhedrons.Understandably, the shape of arranging of described protuberance or salient point can be made adjustment according to bright dipping demand, such as can rounded array densely arranged.
Understandably, preferably go out light effect in order to obtain, described protuberance overall alignment is circular or square.
The incident beam that this light emitting diode 30 sends enters optical lens 10 through incidence surface 1021 refractions.This incidence surface 1021 near the light this incident beam central angle to disperse effect limited, near light this incident beam central angle most of central authorities towards exiting surface 101 after incidence surface 1021 refractions enter optical lens 10 propagate, light is intensive and light intensity is stronger, and near the intensive light this incident beam central angle is finally dispersed towards the periphery of optical lens 10 after the protuberance refraction of exiting surface 101 central authorities.
In the present invention, the light of the incident beam central angle both sides that light emitting diode 30 sends penetrates from optical lens 10 after optical lens 10 refractions, and near the intensive light of the incident beam central angle that light emitting diode 30 sends is dispersed towards the periphery of optical lens 10 after optical microstructures 20 refractions, thereby make the intensive light in optical lens 10 effectively disperse the light intensity that simultaneously effectively reduces outgoing beam.
Understandably, when base material 103 and the optical microstructures 20 of the optical lens 10 in the present invention are preferably resin material of light transmission, and one-body molded by injection moulding mode.
Will also be appreciated that for the person of ordinary skill of the art, can make other various corresponding changes and distortion 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. an optical lens, for dispersing the light that light emitting diode sends, comprise an incidence surface and an exiting surface, it is characterized in that: described exiting surface is provided with optical microstructures to the position of the intensive beam projecting in should optical lens, for dispersing the intensive light of this exiting surface outgoing, protuberance that described optical microstructures is some adjacent settings, that outwards protruded out along light direction by described exiting surface.
2. optical lens as claimed in claim 1, is characterized in that: described exiting surface is cambered surface, and described optical microstructures is positioned at exiting surface central authorities.
3. optical lens as claimed in claim 2, is characterized in that: described exiting surface central authorities form groove towards lens inner recess, and the micro-knot of described optics is contained in groove.
4. optical lens as claimed in claim 2, is characterized in that: described exiting surface central authorities are a smooth loading end, and the micro-knot of described optics is formed on loading end.
5. optical lens as claimed in claim 1, it is characterized in that: also comprise the joint face that incidence surface is connected with exiting surface, described incidence surface is curved surface, and its middle part by joint face forms towards optical lens inner recess, and described optical microstructures and incidence surface are just to arranging.
6. optical lens as claimed in claim 5, is characterized in that: the profile of described incidence surface is parabola or the conical surface.
7. optical lens as claimed in claim 1, is characterized in that: described protuberance is hemispherical, and light is gone out by the spherical divergence of described protuberance.
8. optical lens as claimed in claim 1, is characterized in that: described protuberance is centrum, rib body or other polyhedrons.
9. optical lens as claimed in claim 1, is characterized in that: described protuberance overall alignment is circular or square.
10. a backlight module, comprises a light emitting diode and an optical lens, it is characterized in that: described optical lens is the optical lens described in any one in claim 1 to 9, and described light emitting diode is positioned at a side of the incidence surface of described optical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563712.5A CN103883976A (en) | 2012-12-24 | 2012-12-24 | Optical lens and backlight module using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563712.5A CN103883976A (en) | 2012-12-24 | 2012-12-24 | Optical lens and backlight module using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883976A true CN103883976A (en) | 2014-06-25 |
Family
ID=50953013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210563712.5A Pending CN103883976A (en) | 2012-12-24 | 2012-12-24 | Optical lens and backlight module using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883976A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566202A (en) * | 2013-10-11 | 2015-04-29 | 鸿富锦精密工业（深圳）有限公司 | Lens and light source module employing same |
| CN104633572A (en) * | 2014-12-27 | 2015-05-20 | 长城汽车股份有限公司 | Light processing device, vehicle lamp and vehicle |
| CN105889836A (en) * | 2015-02-12 | 2016-08-24 | 中强光电股份有限公司 | Vehicle lamp module and lens |
| CN111552119A (en) * | 2020-06-02 | 2020-08-18 | 深圳创维－Rgb电子有限公司 | Lens film, light source assembly, backlight module and display device |
| CN112833367A (en) * | 2019-04-02 | 2021-05-25 | 福建华佳彩有限公司 | Secondary lens structure with wide light ray emitting angle |
| CN113934058A (en) * | 2021-10-29 | 2022-01-14 | 深圳创维－Rgb电子有限公司 | Optical assembly, backlight module and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101561085A (en) * | 2009-05-14 | 2009-10-21 | 上海广电光电子有限公司 | Wide-angle LED light source |
| CN101614363A (en) * | 2008-06-25 | 2009-12-30 | 富准精密工业(深圳)有限公司 | Light emitting diode illuminating apparatus |
| CN102141215A (en) * | 2010-01-28 | 2011-08-03 | 奇菱科技股份有限公司 | Light source device and backlight module with same |
| CN102287690A (en) * | 2011-04-29 | 2011-12-21 | 友达光电股份有限公司 | Backlight module |
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2012
- 2012-12-24 CN CN201210563712.5A patent/CN103883976A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614363A (en) * | 2008-06-25 | 2009-12-30 | 富准精密工业(深圳)有限公司 | Light emitting diode illuminating apparatus |
| CN101561085A (en) * | 2009-05-14 | 2009-10-21 | 上海广电光电子有限公司 | Wide-angle LED light source |
| CN102141215A (en) * | 2010-01-28 | 2011-08-03 | 奇菱科技股份有限公司 | Light source device and backlight module with same |
| CN102287690A (en) * | 2011-04-29 | 2011-12-21 | 友达光电股份有限公司 | Backlight module |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566202A (en) * | 2013-10-11 | 2015-04-29 | 鸿富锦精密工业（深圳）有限公司 | Lens and light source module employing same |
| CN104633572A (en) * | 2014-12-27 | 2015-05-20 | 长城汽车股份有限公司 | Light processing device, vehicle lamp and vehicle |
| CN104633572B (en) * | 2014-12-27 | 2017-08-25 | 长城汽车股份有限公司 | Light processing equipment and car light and vehicle |
| CN105889836A (en) * | 2015-02-12 | 2016-08-24 | 中强光电股份有限公司 | Vehicle lamp module and lens |
| CN112833367A (en) * | 2019-04-02 | 2021-05-25 | 福建华佳彩有限公司 | Secondary lens structure with wide light ray emitting angle |
| CN112833367B (en) * | 2019-04-02 | 2022-08-09 | 福建华佳彩有限公司 | Secondary lens structure with wide light ray emitting angle |
| CN111552119A (en) * | 2020-06-02 | 2020-08-18 | 深圳创维－Rgb电子有限公司 | Lens film, light source assembly, backlight module and display device |
| CN113934058A (en) * | 2021-10-29 | 2022-01-14 | 深圳创维－Rgb电子有限公司 | Optical assembly, backlight module and display device |
| WO2023070922A1 (en) * | 2021-10-29 | 2023-05-04 | 深圳创维－Rgb电子有限公司 | Optical assembly, backlight module and display device |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140625 |