CN203907479U - LED lens with straight-down type backlight module - Google Patents
LED lens with straight-down type backlight module Download PDFInfo
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- CN203907479U CN203907479U CN201420370089.6U CN201420370089U CN203907479U CN 203907479 U CN203907479 U CN 203907479U CN 201420370089 U CN201420370089 U CN 201420370089U CN 203907479 U CN203907479 U CN 203907479U
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Abstract
The utility model belongs to the field of backlight modules of liquid crystal displays, in particular to an LED lens with a straight-down type backlight module. The lens is of an axisymmetric structure and comprises a bottom surface, an inside curved surface, a side surface, an upper curved surface and a central concave surface, wherein the bottom surface is provided with a reflection structure; the inside curved surface is arranged at the middle part of the bottom surface to form a cavity concaved in the bottom surface; the side surface extends upwards along the edge of the bottom surface to be connected with the edge of the upper curved surface; the upper curved surface extends in an arc from the outer periphery to a middle symmetric axis direction to form an arc-shaped curved surface raised up; the central concave surface is a downwards-concave surface extending downwards from the inner edge of the upper curved surface to the center, and the central concave surface is in smooth transition with the upper curved surface at edge connection positions. A fully reflecting surface can reduce light intensity of a center shaft, and the bottom surface is provided with the reflection structure so as to effectively reduce light scattering. Based on the combination of the fully reflecting surface and the reflection structure of the bottom surface, the above effects can be achieved, light scattering can also be effectively enhanced, and light spots projected to diffusion plates are larger in diameter and the illumination is more uniform.
Description
Technical field
The utility model belongs to the backlight module field of liquid crystal display, is specially a kind of LED lens of down straight aphototropism mode set.
Background technology
Liquid crystal display, or claim LCD (Liquid Crystal Display), be the display device of planar ultra-thin.The advantages such as, quality little, low radiation little by feat of volume, liquid crystal display has replaced the traditional monitor that adopts cathode-ray tube gradually, becomes the Display Types of main flow.
Liquid crystal display cells is passive light-emitting component, display screen itself is not luminous, so liquid crystal display is generally combined by backlight module and display panels, backlight module, for display panels provides light source, makes display present the image on display panels.According to light source position backlight module, can be divided into straight-down negative and side-light type.Side light type back light module is the diode crystal particle of giving out light to be configured in to the side of panel of LCD.Direct type backlight module is that the direct rear that LED crystal particle is configured in to display panels is equably as light source.Nowadays, the producer be devoted to develop gentlier, less liquid crystal display.Therefore, how to maintain and under the prerequisite of brightness, the uniformity, reduce LED quantity and become the large problem of one in design.
Prior art has been done many improvement to backlight module, can effectively increase spot size, improves the efficiency of light energy utilization.As Chinese patent literature CN102287679 discloses a kind of light source module and backlight module, although can reduce the dissipation of light, improve the efficiency of light energy utilization, but cannot reduce near the light intensity of lens centre axle, and the degree of divergence of light is not high, make the hot spot arriving on diffuser plate after beam projecting can not reach uniform-illumination, the effect that diameter is larger.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of dissipation that can reduce light is provided, and makes to arrive after beam projecting the LED lens that hot spot on diffuser plate can reach uniform-illumination, a kind of down straight aphototropism mode set that diameter is larger.
In order to solve the problems of the technologies described above, the utility model by the following technical solutions: a kind of LED lens of down straight aphototropism mode set, described lens are axisymmetric structure, lens comprise bottom surface, negative camber, side, top-surface camber and center concave surface; Described bottom surface is provided with catoptric arrangement; Described negative camber is located at middle part, bottom surface, forms indent in the chamber of bottom surface; Described side extends upwardly to and top-surface camber side edge along bottom edge; Described top-surface camber extends to middle symmetry axis direction camber line from neighboring, forms the arc-shaped curved surface with convex-shaped; Described center concave surface be by top-surface camber inward flange to center the concave surface to downward-extension, center concave surface and top-surface camber seamlessly transit in junction, edge.
Further, described negative camber is plane of light incidence, and described side and top-surface camber are beam projecting face; Incide directive lens bottom after light generation inner total reflection on the concave surface of described center and total reflection, the light of total reflection after the reflection of bottom reflection structure from the side or top-surface camber outgoing.
Part light enters lens from the plane of incidence, after two secondary reflections, shine lens outside, the degree of divergence of emergent ray is high, and it is exit facet that the utility model adopts side and top-surface camber simultaneously, make the equal energy of the emergent ray outgoing of all directions outside to lens, spot diameter is larger.
Fully reflecting surface can effectively reduce the light intensity of central shaft, and bottom surface arranges the dissipation that catoptric arrangement can effectively reduce light; Being combined with of described fully reflecting surface and bottom reflection structure can not only reach above-mentioned effect, can also effectively strengthen dispersing of light, makes to project diffuser plate spot diameter larger, and illumination is more even.
Further, described negative camber is smooth transparent curved surface, and the catoptric arrangement on described bottom surface arranges or along all surfaces setting of bottom surface along the outer ring part surface of bottom surface.
Because negative camber is transparent curved surface, light is not dispersed in negative camber place, and light, after total reflection, can be concentrated the outer ring of directive bottom surface, so described catoptric arrangement only need comprise all light through fully reflecting surface reflection.
Further, described negative camber is frosting or cloudy surface, and the catoptric arrangement on described bottom surface is along all surfaces setting of bottom surface.
Because described negative camber is frosting or cloudy surface, light is dispersed in negative camber place, and light is after fully reflecting surface reflection, and degree of divergence is high, adopts the set-up mode of catoptric arrangement covering and whole bottom surface, makes the light of directive bottom surface face all can produce diffuse reflection.
Further, described catoptric arrangement is three-dimensional micro-reflection structure.Select three-dimensional micro-reflection structure as the catoptric arrangement of bottom surface, order projects the light of catoptric arrangement and realizes diffuse reflection, thereby it is more even to make to project diffuser plate light spot illumination.
Further, described three-dimensional micro-reflection structure be that pyramid, circular cone, part are spherical, cylinder or channel form micro structure array.Degree of divergence, the angle of divergence different of light after different catoptric arrangement reflections, the specific design of three-dimensional micro-reflection structure is also relevant with the angle of total reflection of center concave surface according to lens material.
Further, the face of cylinder that described side is vertical bottom face or the inwardly curved surface of button.The lens thickness that different side structures forms is not identical, and light is not identical through the refractive index of side yet, according to the refraction angle of the practical structures of display and required emergent ray, selects corrected lens side structure.
What further, described central fovea faced center position extends to straight line to downward-extension or camber line to downward-extension.
Further, described center concave surface is straight line during to downward-extension, and the angle of center concave surface and central symmetry axis is greater than 50 °; Described center concave surface is camber line during to downward-extension, and on camber line, the maximum of the tangent line of each point and central symmetry axis angle is greater than 50 degree;
Above straight center concave surface and central shaft angle are carried out to restriction, or, camber line center concave surface each point tangent line and central shaft angle are carried out to the set-up mode limiting, can make central shaft light intensity reach desirable strength, simultaneously for incident ray provides enough fully reflecting surfaces.
Further, described center concave surface outward flange and bottom center's place straight line are total reflection edges of regions line, and described total reflection edges of regions line and central symmetry axis angle are 0 ° to 20 °.
Total reflection edges of regions line and central symmetry axis angle are carried out to the set-up mode limiting, can be prevented that fully reflecting surface area is excessive, cause near central shaft 30 degree scopes with interior light intensity too a little less than.
Accompanying drawing explanation
Fig. 1 plane of incidence is the lens profile figure of non-frosting;
Fig. 2 plane of incidence is the lens profile figure of frosting.
The specific embodiment
Below in conjunction with accompanying drawing, select two kinds of embodiment to be described further the specific embodiment of the present utility model:
Embodiment mono-:
Referring to Fig. 1, an embodiment for the LED lens of down straight aphototropism mode set, comprising: bottom surface 1, negative camber 2, side 4, top-surface camber 301He center concave surface 302, and described negative camber 2 is plane of light incidence, described side 4 and top-surface camber 301 are beam projecting face, and center concave surface 302 is fully reflecting surface.
Along bottom surface, 1 edge extends upward and top-surface camber 301 side edge in described side 4; The face of cylinder that described side 4 is vertical bottom face; Described top-surface camber 301 sidepieces raise up along side bearing of trend; Concave surface 302 middle parts, described center cave inward, and form fully reflecting surface; Described center concave surface 302 is 60 ° with the angle of central symmetry axis M, and described center concave surface 302 outward flanges and bottom center's place straight line are total reflection edges of regions line L, and described total reflection edges of regions line L and central symmetry axis M angle are 20 °.
Described bottom surface 1 is provided with catoptric arrangement, is specially three-dimensional micro-reflection structure, as pyramidal structure 102, and 102 outer rings that are coated on bottom surface 1 of described pyramidal structure.
Described negative camber 2 is smooth transparent curved surface, and the catoptric arrangement on described bottom surface 1 arranges all surfaces setting of bottom surface (or along) along the outer ring part surface of bottom surface.
Part light X enters to inject lens from negative camber 2, and the light that is irradiated to center concave surface 302 carries out total reflection, realizes light 4 outgoing from the side after 102 reflections of bottom surface micro-reflection structure after total reflection, then projects on diffuser plate, and diffuser plate is not shown.
Part light X ' enters to inject lens from negative camber 2, and directly directive top-surface camber 301 projects on diffuser plate after top-surface camber 301 refractions, and diffuser plate is not shown.
Adopt taper micro-reflection structure 102 to be located on bottom surface 1, make light carry out diffuse reflection on total reflection is during to bottom surface 1, make to project diffuser plate light spot illumination more even.Because the plane of incidence 2 ' is frosting (cloudy surface), light is dispersed in the plane of incidence 2 places, and part light is after 302 total reflections of center concave surface, and light can relatively disperse, and guarantees that emergent ray all can have good large spot, uniform-illumination effect.
Described center concave surface 302 can effectively reduce the light intensity of central shaft, and described bottom surface pyramidal structure 102 can effectively reduce the dissipation of light; Center concave surface 302 and bottom surface pyramidal structure 102 are combined with and can not only reach above-mentioned effect, can also effectively strengthen dispersing of light, make to project diffuser plate spot diameter larger, and illumination is more even.
As can be seen from Figure 1, the light that luminous original paper sends from negative camber chamber, some light directly penetrates from top-surface camber 301 after lens reflection; Some light is after 302 total reflections of center concave surface, then through the reflection of bottom surface 1, light 4 penetrates from the side.
Embodiment bis-:
Referring to Fig. 2, an embodiment for the LED lens of down straight aphototropism mode set, comprising: bottom surface 1, negative camber 2 ', side 4, top-surface camber 301He center concave surface 302, and described negative camber 2 ' is plane of light incidence, described side and top-surface camber are beam projecting face, and center concave surface is fully reflecting surface.
Along bottom surface, 1 edge extends upward and top-surface camber 301 side edge in described side 4; The face of cylinder that described side 4 is vertical bottom face; Along side, 4 bearing of trends raise up described top-surface camber 301 sidepieces; Concave surface 302 middle parts, described center cave inward, and form fully reflecting surface; Described center concave surface 302 is 60 ° with the angle of central symmetry axis M, and described center concave surface 302 outward flanges and bottom center's place straight line are total reflection edges of regions line L, and described total reflection edges of regions line L and central symmetry axis M angle are 20 °.
Described bottom surface 1 is provided with reflection 102 structures, is specially three-dimensional micro-reflection structure, as pyramidal structure 102, and 102 outer rings that are coated on bottom surface 1 of described pyramidal structure.
Described negative camber 2 ' is frosting or cloudy surface, 1 all surfaces setting along bottom surface of the catoptric arrangement on described bottom surface.
Light Y enters to inject lens from negative camber 2 ', and light is in the upper generation scattering of negative camber 2 '.Part scattered beam directly penetrates from top-surface camber 301 after lens reflection; Part scattered beam exposes on center concave surface 302, and Jing Quan center concave surface 302 reflexes to bottom surface, then 4 penetrates from the side after pyramidal structure 102 reflections of bottom surface 1; Also have part scattered beam directly to refract in the pyramidal structure 102 of bottom surface 1, after bottom reflection, 4 penetrate from the side.Emergent ray projects on diffuser plate, and described diffuser plate is not shown in the figures.
Adopt taper micro-reflection structure 102 to be located on bottom surface 1, make light carry out diffuse reflection on total reflection is during to bottom surface 1, make to project diffuser plate light spot illumination more even.Because the plane of incidence 2 ' is frosting (cloudy surface), light is dispersed in the plane of incidence 2 places, and part light is after 302 total reflections of center concave surface, and light can relatively disperse, and guarantees that emergent ray all can have good large spot, uniform-illumination effect.
Described center concave surface 302 can effectively reduce the light intensity of central shaft, and described bottom surface pyramidal structure 102 can effectively reduce the dissipation of light; Center concave surface 302 and bottom surface pyramidal structure 102 are combined with and can not only reach above-mentioned effect, can also effectively strengthen dispersing of light, make to project diffuser plate spot diameter larger, and illumination is more even.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also change and revise above-mentioned embodiment.Therefore, the utility model is not limited to the specific embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection domain of claim of the present utility model.In addition,, although used some specific terms in this description, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (10)
1. LED lens for down straight aphototropism mode set, described lens are axisymmetric structure, lens comprise bottom surface, negative camber, side, top-surface camber and center concave surface; Described bottom surface is provided with catoptric arrangement; Described negative camber is located at middle part, bottom surface, forms indent in the chamber of bottom surface; It is characterized in that,
Described side extends upwardly to and top-surface camber side edge along bottom edge;
Described top-surface camber extends to middle symmetry axis direction camber line from neighboring, forms the arc-shaped curved surface with convex-shaped;
Described center concave surface be by top-surface camber inward flange to center the concave surface to downward-extension, center concave surface and top-surface camber seamlessly transit in junction, edge.
2. the LED lens of down straight aphototropism mode set according to claim 1, is characterized in that: described negative camber is plane of light incidence, and described side and top-surface camber are beam projecting face; Incide directive lens bottom after light generation inner total reflection on the concave surface of described center and total reflection, the light of total reflection after the reflection of bottom reflection structure from the side or bottom surface outgoing.
3. the LED lens of down straight aphototropism mode set according to claim 1, is characterized in that: described negative camber is smooth transparent curved surface, and the catoptric arrangement on described bottom surface arranges or along all surfaces setting of bottom surface along the outer ring part surface of bottom surface.
4. the LED lens of down straight aphototropism mode set according to claim 1, is characterized in that: described negative camber is frosting or cloudy surface, and the catoptric arrangement on described bottom surface is along all surfaces setting of bottom surface.
5. according to the LED lens of the down straight aphototropism mode set described in claim 1 to 4 any one, it is characterized in that: described catoptric arrangement is three-dimensional micro-reflection structure.
6. the LED lens of down straight aphototropism mode set according to claim 5, is characterized in that: described three-dimensional micro-reflection structure is that pyramid, circular cone, part are spherical, cylinder or channel form micro structure array.
7. the LED lens of down straight aphototropism mode set according to claim 1, is characterized in that: the face of cylinder that described side is vertical bottom face or the inwardly curved surface of button.
8. the LED lens of down straight aphototropism mode set according to claim 1, is characterized in that: what described central fovea faced center position extends to straight line to downward-extension or camber line to downward-extension.
9. the LED lens of down straight aphototropism mode set according to claim 8, is characterized in that: described center concave surface is straight line during to downward-extension, and the angle of center concave surface and central symmetry axis is greater than 50 °;
Described center concave surface is camber line during to downward-extension, and on camber line, the maximum of the tangent line of each point and central symmetry axis angle is greater than 50 degree.
10. the LED lens of down straight aphototropism mode set according to claim 1, it is characterized in that: described center concave surface outward flange and bottom center's place straight line are total reflection edges of regions line, described total reflection edges of regions line and central symmetry axis angle are 0 ° to 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370089.6U CN203907479U (en) | 2014-07-04 | 2014-07-04 | LED lens with straight-down type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370089.6U CN203907479U (en) | 2014-07-04 | 2014-07-04 | LED lens with straight-down type backlight module |
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| Publication Number | Publication Date |
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| CN203907479U true CN203907479U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420370089.6U Expired - Fee Related CN203907479U (en) | 2014-07-04 | 2014-07-04 | LED lens with straight-down type backlight module |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104806976A (en) * | 2015-02-14 | 2015-07-29 | 成都恒坤光电科技有限公司 | Novel uniform light direct type LED (light-emitting diode) back lighting light distribution lens |
| CN107942581A (en) * | 2017-11-20 | 2018-04-20 | 四川长虹电器股份有限公司 | A kind of down straight aphototropism mode set structure |
| CN107991807A (en) * | 2017-12-07 | 2018-05-04 | 苏州奥浦迪克光电技术有限公司 | The backlight module of backlight module lens and its composition |
| WO2018094880A1 (en) * | 2016-11-23 | 2018-05-31 | 深圳市明智塑胶制品有限公司 | Ultrathin backlight source lens |
| CN110235054A (en) * | 2017-01-23 | 2019-09-13 | 恩普乐股份有限公司 | Flux control member, light emitting device, planar light source device and display device |
| CN110291327A (en) * | 2017-02-27 | 2019-09-27 | 恩普乐股份有限公司 | Light emitting device, planar light source device and display device |
| CN110914746A (en) * | 2017-06-05 | 2020-03-24 | 亮锐控股有限公司 | Optical lens for ultra-thin direct-lighting backlight |
| CN111509105A (en) * | 2019-08-30 | 2020-08-07 | 达运精密工业股份有限公司 | Light-emitting element, light-emitting module and backlight module |
| CN112242092A (en) * | 2019-07-17 | 2021-01-19 | 高创(苏州)电子有限公司 | Backlight module, display panel and preparation method of backlight module |
| CN112424679A (en) * | 2018-07-13 | 2021-02-26 | 三星电子株式会社 | Diffusion lens and display device having the same |
| CN112631026A (en) * | 2020-12-31 | 2021-04-09 | 联晶智能电子有限公司 | Backlight lens and module |
| 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 |
| US11242977B2 (en) | 2017-07-26 | 2022-02-08 | Lumileds Llc | Illumination device with element having annular coating |
| CN114280851A (en) * | 2017-08-04 | 2022-04-05 | 亮锐控股有限公司 | Very wide distributed Light Emitting Diode (LED) lens for thin direct type backlight |
| US11320696B2 (en) | 2019-05-30 | 2022-05-03 | Huawei Technologies Co., Ltd. | Backlight module, display, and mobile terminal |
| CN115064069A (en) * | 2022-06-20 | 2022-09-16 | Tcl华星光电技术有限公司 | Backlight module, manufacturing method thereof and display device |
| CN115826293A (en) * | 2022-12-07 | 2023-03-21 | 上海天马微电子有限公司 | Backlight module and display device |
-
2014
- 2014-07-04 CN CN201420370089.6U patent/CN203907479U/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806976A (en) * | 2015-02-14 | 2015-07-29 | 成都恒坤光电科技有限公司 | Novel uniform light direct type LED (light-emitting diode) back lighting light distribution lens |
| WO2018094880A1 (en) * | 2016-11-23 | 2018-05-31 | 深圳市明智塑胶制品有限公司 | Ultrathin backlight source lens |
| US10838256B2 (en) | 2016-11-23 | 2020-11-17 | Shenzhen Mingzhi Ultra Precision Technology Co., Ltd. | Ultra-thin backlight lens |
| CN110235054A (en) * | 2017-01-23 | 2019-09-13 | 恩普乐股份有限公司 | Flux control member, light emitting device, planar light source device and display device |
| CN110291327A (en) * | 2017-02-27 | 2019-09-27 | 恩普乐股份有限公司 | Light emitting device, planar light source device and display device |
| CN110914746A (en) * | 2017-06-05 | 2020-03-24 | 亮锐控股有限公司 | Optical lens for ultra-thin direct-lighting backlight |
| CN110914746B (en) * | 2017-06-05 | 2021-09-24 | 亮锐控股有限公司 | Optical lens for ultra-thin direct-lighting backlight |
| US11242977B2 (en) | 2017-07-26 | 2022-02-08 | Lumileds Llc | Illumination device with element having annular coating |
| CN114280851B (en) * | 2017-08-04 | 2023-07-25 | 亮锐控股有限公司 | Extremely wide distribution Light Emitting Diode (LED) lens for thin direct backlight |
| CN114280851A (en) * | 2017-08-04 | 2022-04-05 | 亮锐控股有限公司 | Very wide distributed Light Emitting Diode (LED) lens for thin direct type backlight |
| CN107942581A (en) * | 2017-11-20 | 2018-04-20 | 四川长虹电器股份有限公司 | A kind of down straight aphototropism mode set structure |
| CN107942581B (en) * | 2017-11-20 | 2021-03-16 | 四川长虹电器股份有限公司 | Direct type backlight module structure |
| CN107991807A (en) * | 2017-12-07 | 2018-05-04 | 苏州奥浦迪克光电技术有限公司 | The backlight module of backlight module lens and its composition |
| CN112424679A (en) * | 2018-07-13 | 2021-02-26 | 三星电子株式会社 | Diffusion lens and display device having the same |
| CN112424679B (en) * | 2018-07-13 | 2024-10-18 | 三星电子株式会社 | Diffusion lens and display device having the same |
| 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 |
| US11320696B2 (en) | 2019-05-30 | 2022-05-03 | Huawei Technologies Co., Ltd. | Backlight module, display, and mobile terminal |
| CN112242092A (en) * | 2019-07-17 | 2021-01-19 | 高创(苏州)电子有限公司 | Backlight module, display panel and preparation method of backlight module |
| CN111509105B (en) * | 2019-08-30 | 2021-09-03 | 达运精密工业股份有限公司 | Light-emitting element, light-emitting module and backlight module |
| CN111509105A (en) * | 2019-08-30 | 2020-08-07 | 达运精密工业股份有限公司 | Light-emitting element, light-emitting module and backlight module |
| CN112631026A (en) * | 2020-12-31 | 2021-04-09 | 联晶智能电子有限公司 | Backlight lens and module |
| CN112631026B (en) * | 2020-12-31 | 2024-05-10 | 联晶智能电子有限公司 | Backlight lens and module |
| CN115064069A (en) * | 2022-06-20 | 2022-09-16 | Tcl华星光电技术有限公司 | Backlight module, manufacturing method thereof and display device |
| CN115064069B (en) * | 2022-06-20 | 2023-12-08 | Tcl华星光电技术有限公司 | Backlight module, manufacturing method thereof and display device |
| CN115826293A (en) * | 2022-12-07 | 2023-03-21 | 上海天马微电子有限公司 | Backlight module and display device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180105 Address after: Nanhai District Jiujiang town Guangdong city Foshan province 528203 Riverside Avenue, No. 100 Patentee after: Foshan Bo Jun Hong Polytron Technologies Inc Address before: 528200 Guangdong Foshan Nanhai Software Park R & D building A three tier West Area Co-patentee before: Guangzhou Yixin Energy-Saving Service Co., Ltd. Patentee before: Foshan Graduate School of Sun Yat-sen University |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20200704 |