CN109597241A - 一种椭球面广角背光源透镜 - Google Patents

一种椭球面广角背光源透镜 Download PDF

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CN109597241A
CN109597241A CN201810956020.4A CN201810956020A CN109597241A CN 109597241 A CN109597241 A CN 109597241A CN 201810956020 A CN201810956020 A CN 201810956020A CN 109597241 A CN109597241 A CN 109597241A
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ellipsoid
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张志才
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Shenzhen Smart Super Precision Technology Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0012Optical design, e.g. procedures, algorithms, optimisation routines
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00Simple or compound lenses
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本发明提供了一种椭球面广角背光源透镜,包括透镜体,透镜体设置有出光顶面、出光侧面、以及反光底面,出光侧面的上边缘和下边缘分别与出光顶面的外边缘、反光底面的外边缘连接,反光底面中心设置有光源安装孔,光源安装孔的内壁为入光面,入光面的下边缘与反光底面的内边缘连接;光源安装孔的顶部中心设置有向下凸起的入光凸点;出光顶面、入光面以及入光凸点的表面均为椭球面结构。本发明中,设置有入光凸点,通过折射将经过透镜体中心的光线发散开,避免透镜体中心的辉度过大;椭球面结构能使进入和射出透镜体的光线进行折射,使光线发射的角度更大,进而LED背光源对液晶面板的照射面积,减少LED灯的使用数量和液晶电视的耗电量。

Description

一种椭球面广角背光源透镜
技术领域
本发明涉及透镜技术领域,尤其涉及一种椭球面广角背光源透镜。
背景技术
液晶电视通常采用直下式LED背光源作为液晶面板后方的发光源。直下式LED背光源通常由LED灯和透镜组合而成,透镜可以使LED灯的光线均匀照射,使液晶面板实现均匀辉度,进一步提高液晶电视的画质。
现有技术中,透镜的发光角度小,使LED灯的照射面积较少,进而导致直下式LED背光源对液晶面板的照射面积较少。液晶电视生产商为了提高LED背光源对液晶面板的照射面积,通常采用增加LED灯数量的方法。但这一方法不仅提高了生产成本,也增加了液晶电视的耗电量。
椭球面在笛卡尔坐标系下,方程式为x2/a2+y2/b2+z2/c2=1,其中a,b,c为任意正常数,a、b、c的比例决定椭球面的结构形状。
发明内容
本发明要解决的技术问题是根据上述现有技术的不足,提供一种椭球面广角背光源透镜,用于提高直下式LED背光源对液晶面板的照射面积,降低LED灯数量和液晶电视的耗电量。
本发明的技术方案如下:
一种椭球面广角背光源透镜,包括透镜体,所述透镜体设置有出光顶面、出光侧面、以及反光底面,所述出光侧面的上边缘和下边缘分别与所述出光顶面的外边缘、反光底面的外边缘连接,所述反光底面中心设置有光源安装孔,所述光源安装孔的内壁为入光面,所述入光面的下边缘与所述反光底面的内边缘连接;所述光源安装孔的顶部中心设置有向下凸起的入光凸点;所述出光顶面、入光面以及入光凸点的表面均为椭球面结构。
进一步地,以所述反光底面的中心为笛卡尔坐标系的原点O,设置X、Y、Z轴;所述出光顶面、入光面以及入光凸点的表面的方程式分别为:
x1 2/a1 2+y1 2/b1 2+z1 2/c1 2=1,
x2 2/a2 2+y2 2/b2 2+z2 2/c2 2=1,
x3 2/a3 2+y3 2/b3 2+z3 2/c3 2=1;
其中,a1>b1>c1,c2>b2>a2,b3>c3>a3
进一步地,a1:b1:c1、c2:b2:a2和b3:c3:a3中,任意两者或三者相等。
进一步地,a1>a2>a3,b1>b2>b3,c1>c2>c3
进一步地,所述出光侧面为圆柱面。
进一步地,所述出光侧面和反光底面设置有火花纹路。
进一步地,所述反光底面设置有安装柱脚和安装孔。
有益效果:(1)设置有入光凸点,通过折射将经过透镜体中心的光线发散开,避免透镜体中心的辉度过大;(2)椭球面结构能使进入和射出透镜体的光线进行折射,使光线发射的角度更大,进而LED背光源对液晶面板的照射面积,减少LED灯的使用数量和液晶电视的耗电量;(3)火花纹路用于处理杂散光时,让透镜体投射均匀的光斑。
附图说明
图1是本发明实施例的透视图。
图2是图1上平面ZOY上的剖视图。
图3是图1上平面ZOY上的剖视图。
图4是本发明实施例使用时的平面ZOY上的光路图。
图5是本发明实施例使用时的平面ZOY上的光路图。
图中:10、出光顶面,20、出光侧面,30、反光底面,31、安装柱脚,32、安装孔,40、入光面,41、入光凸点;A、透镜体,B、PCB板,C、LED灯。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述。
如图1-3所示,本发明提供的实施例,一种椭球面广角背光源透镜,包括透镜体,所示透镜体设置有出光顶面10、出光侧面20、以及反光底面30,所述出光侧面20的上边缘和下边缘分别与所述出光顶面10的外边缘、反光底面30的外边缘连接,所述反光底面30中心设置有光源安装孔,所述光源安装孔的内壁为入光面40,所述入光面40的下边缘与所述反光底面30的内边缘连接;所述光源安装孔的顶部中心设置有向下凸起的入光凸点41;所述出光顶面10、入光面40以及入光凸点41的表面均为椭球面结构。
以所述反光底面30的中心为笛卡尔坐标系的原点O,设置X、Y、Z轴;所述出光顶面10、入光面40以及入光凸点41的表面的方程式分别为:
x1 2/a1 2+y1 2/b1 2+z1 2/c1 2=1,
x2 2/a2 2+y2 2/b2 2+z2 2/c2 2=1,
x3 2/a3 2+y3 2/b3 2+z3 2/c3 2=1;
其中:a1>b1>c1,c2>b2>a2,b3>c3>a3
a1>a2>a3,b1>b2>b3,c1>c2>c3
a1:b1:c1、c2:b2:a2和b3:c3:a3中,任意两者或三者相等。本实施例中,优选a1:b1:c1=c2:b2:a2=b3:c3:a3,使光线穿过出光顶面10、入光面40以及入光凸点41的表面的折射角度一致,光线从透镜体射出后均匀分布。
所述出光侧面20为圆柱面。所述出光侧面20和反光底面30设置有火花纹路。
所述反光底面30设置有安装柱脚31和安装孔32。其中,安装柱脚31和安装孔32以X轴为对称轴对称设置。其中,透镜体通过安装柱脚31和安装孔32安装在PCB板上。
如图4-5所示,本实施例使用时,透镜体A安装于PCB板B上,LED灯C安装于透镜体A的光源安装孔中心,光线从LED灯C发散出来经过透镜体A的折射和反射并从透镜体A发散开。
本实施例中:设置有入光凸点41,通过折射将经过透镜体中心的光线发散开,避免透镜体中心的辉度过大。椭球面结构能使进入和射出透镜体的光线进行折射,使光线发射的角度更大,进而LED背光源对液晶面板的照射面积,减少LED灯的使用数量和液晶电视的耗电量。火花纹路用于处理杂散光时,让透镜体投射出均匀的光斑。
以上所揭露的仅为本发明较佳实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。

Claims (7)

1.一种椭球面广角背光源透镜,包括透镜体,所述透镜体设置有出光顶面、出光侧面、以及反光底面,所述出光侧面的上边缘和下边缘分别与所述出光顶面的外边缘、反光底面的外边缘连接,所述反光底面中心设置有光源安装孔,所述光源安装孔的内壁为入光面,所述入光面的下边缘与所述反光底面的内边缘连接;其特征在于:所述光源安装孔的顶部中心设置有向下凸起的入光凸点;所述出光顶面、入光面以及入光凸点的表面均为椭球面结构。
2.根据权利要求1所述的一种椭球面广角背光源透镜,其特征在于:以所述反光底面的中心为笛卡尔坐标系的原点O,设置X、Y、Z轴;所述出光顶面、入光面以及入光凸点的表面的方程式分别为:
x1 2/a1 2+y1 2/b1 2+z1 2/c1 2=1,
x2 2/a2 2+y2 2/b2 2+z2 2/c2 2=1,
x3 2/a3 2+y3 2/b3 2+z3 2/c3 2=1;
其中,a1>b1>c1,c2>b2>a2,b3>c3>a3
3.根据权利要求2所述的一种椭球面广角背光源透镜,其特征在于:a 1:b1:c1、c2:b2:a2和b3:c3:a3中,任意两者或三者相等。
4.根据权利要求2所述的一种椭球面广角背光源透镜,其特征在于:a1>a2>a3,b1>b2>b3,c1>c2>c3
5.根据权利要求1所述的一种椭球面广角背光源透镜,其特征在于:所述出光侧面为圆柱面。
6.根据权利要求1或4所述的一种椭球面广角背光源透镜,其特征在于:所述出光侧面和反光底面设置有火花纹路。
7.根据权利要求1所述的一种椭球面广角背光源透镜,其特征在于:所述反光底面设置有安装柱脚和安装孔。
CN201810956020.4A 2018-08-21 2018-08-21 一种椭球面广角背光源透镜 Pending CN109597241A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115016169A (zh) * 2022-01-04 2022-09-06 东莞市托普莱斯光电技术有限公司 一种带有背光光源和透镜的液晶电视

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CN206321913U (zh) * 2016-11-23 2017-07-11 深圳市明智塑胶制品有限公司 一种广角背光透镜
CN206504274U (zh) * 2016-11-23 2017-09-19 深圳市明智塑胶制品有限公司 一种csp背光透镜
CN206649179U (zh) * 2017-04-19 2017-11-17 成都森石光学科技有限公司 一种非圆形折射式背光透镜
CN107664279A (zh) * 2017-09-12 2018-02-06 江苏大学 一种led平板灯透镜及led光源
WO2018094879A1 (zh) * 2016-11-23 2018-05-31 深圳市明智塑胶制品有限公司 一种椭球面广角背光源透镜

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CN206321913U (zh) * 2016-11-23 2017-07-11 深圳市明智塑胶制品有限公司 一种广角背光透镜
CN206504274U (zh) * 2016-11-23 2017-09-19 深圳市明智塑胶制品有限公司 一种csp背光透镜
WO2018094879A1 (zh) * 2016-11-23 2018-05-31 深圳市明智塑胶制品有限公司 一种椭球面广角背光源透镜
CN206649179U (zh) * 2017-04-19 2017-11-17 成都森石光学科技有限公司 一种非圆形折射式背光透镜
CN107664279A (zh) * 2017-09-12 2018-02-06 江苏大学 一种led平板灯透镜及led光源

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115016169A (zh) * 2022-01-04 2022-09-06 东莞市托普莱斯光电技术有限公司 一种带有背光光源和透镜的液晶电视

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Application publication date: 20190409