Light extraction from LEDs with light pipes
    2.
    发明授权
    Light extraction from LEDs with light pipes 有权
    用光管从LED中提取光

    公开(公告)号:US06560038B1

    公开(公告)日:2003-05-06

    申请号:US10007949

    申请日:2001-12-10

    IPC分类号: G02B1700

    摘要: A non-imaging optical coupler that is a figure of revolution combining a light-transmitting body defining a recessed input cavity, a transparent droplet-shaped encapsulant of a light-emitting diode, or array of diodes in the cavity, the body having a curved side wall shaped to totally internally reflect all the light emitted from the LED and encapsulant, traveling toward the side wall, within a predetermined distance from the diode or center of array, the body having a cylindrical transition section extending from a curved side wall and forwardly, and a planar exit face at the forward end of the body, transverse to the central axis of the figure of revolution.

    摘要翻译: 一种非成像光学耦合器,其是组合限定凹入的输入腔的透光体,发光二极管的透明液滴形密封剂或空腔中的二极管阵列的旋转图,所述主体具有弯曲的 侧壁成形为在与二极管或阵列中心预定距离内完全内部反射从LED和密封剂发射的所有光,朝向侧壁行进,该主体具有从弯曲侧壁延伸的向前的圆柱形过渡部分 以及在身体的前端处的横向于旋转图形的中心轴线的平面出射面。

    Optical device for repositioning and redistributing an LED's light
    4.
    发明授权
    Optical device for repositioning and redistributing an LED's light 有权
    用于重新定位和重新分配LED灯的光学装置

    公开(公告)号:US07021797B2

    公开(公告)日:2006-04-04

    申请号:US10461557

    申请日:2003-06-12

    IPC分类号: G02B6/10

    摘要: An optical device is for spatially displacing the output of a light-emitting diode (LED) and coupling the output to a predominantly spherical emission pattern produced at a useftul height above the LED. The device is made of a transparent dielectric material, such as an injection-molded plastic. It comprises a lower transfer section that receives the LED's light from below and an upper ejector section that receives the transferred light and spreads it spherically. One or more LEDs. are optically coupled to the bottom of the transfer section, which operates by total internal reflection upon their entire hemispherical emission. One embodiment operates as a flashlight-bulb substitute with the ejector section radiating onto a parabolic reflector, which forms the beam. Thus hemisphencally emitting LEDs can be used in parabolic-mirror flashlights wherein these LEDs by themselves may be unsuitable for that role.

    摘要翻译: 光学装置用于空间移动发光二极管(LED)的输出,并将输出耦合到在LED上方的使用高度处产生的主要为球面的发射图案。 该装置由诸如注射成型塑料的透明介电材料制成。 它包括从下方接收LED的光的下转印部分和接收转印的光并且其球形扩展的上喷射器部分。 一个或多个LED。 光学耦合到传输部分的底部,其在其整个半球发射时通过全内反射来操作。 一个实施例用作手电筒灯替代物,其中喷射器部分辐射到形成光束的抛物面反射器上。 因此,半透明发光LED可用于抛物面镜子手电筒,其中这些LED本身可能不适合于该作用。

    Illuminating lens designed by extrinsic differential geometry
    5.
    发明授权
    Illuminating lens designed by extrinsic differential geometry 失效
    通过外在差分几何设计的照明镜头

    公开(公告)号:US06273596B1

    公开(公告)日:2001-08-14

    申请号:US09315262

    申请日:1999-05-20

    IPC分类号: F21V500

    摘要: A grid defining illumination cells having areas to pass light from a source for use in generation of a lines, wherein the grid is defined by first lines extending about one axis defined by the source, and second lines emanating from the axis to intersect first lines, each cell having four edges defined by successive of first lines and successive of second lines, the cells having one of the following: i) equal areas ii) areas that increase in direction away from the source.

    摘要翻译: 定义照明单元的栅格,其具有用于传递源的光的区域,用于产生线,其中栅格由围绕源限定的一个轴延伸的第一线和从轴发出以与第一线交叉的第二线限定, 每个单元具有由连续的第一行和连续的第二行限定的四个边缘,单元具有以下之一:i)相等的面积。)远离源的方向增加的区域。

    Ring-lens system for efficient beam formation
    6.
    发明授权
    Ring-lens system for efficient beam formation 失效
    环形透镜系统,用于有效的光束形成

    公开(公告)号:US5926320A

    公开(公告)日:1999-07-20

    申请号:US864840

    申请日:1997-05-29

    IPC分类号: F21V7/00 G02B27/30 G02B27/10

    CPC分类号: F21S48/1329

    摘要: This invention consists of a highly efficient beamforming system of ring-lens elements that may be used in automobile headlights, flashlights, and for other lighting products. The lens captures most of the light from an omnidirectional source, so that light from a solid angular cone of nearly 4 steradians is utilized with little or no reliance on a metallic reflector. The surfaces of the lens elements may be formed integrally with a hot light source, such as an incandescent lamp, so that the filament of the light source is inserted directly into an internal cavity of the lens. The lens may also be formed in optical contact with a cold light source, such as a light emitting diode, to reduce Fresnel losses and increase light utilization efficiency. An integrated system of optical surfaces collects light, including downwardly-directed light, from the source to further increase light utilization to a high efficiency of 75-90%. The number of surfaces on the lens are at least three, and one or more of these surfaces use total internal reflection (TIR) to redirect the light. The lens may be formed in either a two piece construction or a one piece construction having an internal air gap. The lens may be made from silicone or a high temperature glass having a low thermal expansion coefficient.

    摘要翻译: 本发明包括可用于汽车前灯,手电筒和其他照明产品的环形透镜元件的高效波束成形系统。 透镜捕获来自全向光源的大部分光,使得来自具有接近4个立体角的固体角锥的光被很少或根本不依赖于金属反射器。 透镜元件的表面可以与诸如白炽灯的热光源一体地形成,使得光源的灯丝被直接插入到透镜的内部空腔中。 透镜也可以形成为与冷光源(例如发光二极管)光学接触,以减少菲涅耳损耗并提高光利用效率。 光学表面的集成系统从源收集光,包括向下指向的光,以进一步将光利用率提高到75-90%的高效率。 透镜上的表面数量至少为三个,并且这些表面中的一个或多个使用全内反射(TIR)来重定向光。 透镜可以形成为具有内部气隙的两件式结构或单件结构。 透镜可以由具有低热膨胀系数的硅树脂或高温玻璃制成。

    Illuminating lens designed by extrinsic differential geometry
    7.
    发明授权
    Illuminating lens designed by extrinsic differential geometry 失效
    通过外在差分几何设计的照明镜头

    公开(公告)号:US5924788A

    公开(公告)日:1999-07-20

    申请号:US935774

    申请日:1997-09-23

    摘要: An illumination system with a prescribed output pattern comprising a light source and an optical lens redirecting the light of the source into an output beam, the lens with multiple surfaces at least one of which has a shape that is not a surface of revolution, the shape generated by the following method: on the Gaussian sphere of directions of the output beam exiting the surface of the lens, in accordance with the prescribed output pattern, establish a first grid of equal-flux zones of solid angle; on a portion of the Gaussian sphere of directions of the light emitted from the source into the interior of the lens, establish a second grid with the same number of equal-flux zones of solid angles as the first grid, with a coordinate-system topology congruent with that of the first grid, such that the zones of the second grid are in one-to-one correspondence with the zones of the first grid, with the flux of each zone in proportion to its corresponding zone of the first grid, according to the local transmittance of the lens, with either of both of the grids being rotationally non-symmetric; by this correspondence define a flux-redistributing directional mapping function from the first Gaussian sphere to the second Gaussian sphere, whereby any light ray from the source can be assigned a direction in the output beam, according to the zone of the second grid into which the ray falls, so that the redirected ray falls in the corresponding zone of the first grid; establish one or more lens surfaces to redirect the source rays to the output rays, using the vector laws of refraction or reflection to derive a distribution of normal vectors for each surface; from the distributions of normal vectors, successively generate each lens surface, beginning with that nearest source and going outwards.

    摘要翻译: 具有规定输出图案的照明系统包括光源和将光源的光重定向到输出光束的光学透镜,该透镜具有多个表面,其中至少一个具有不是旋转表面的形状,该形状 通过以下方法产生:在离开透镜表面的输出光束的方向的高斯球体上,根据规定的输出图案,建立具有立体角的等通量区域的第一格栅; 在从源极发射到透镜内部的光的方向的高斯球体的一部分上,建立具有与第一格栅相同数量的具有相同数量的立体角的等通量区域的第二格栅,具有坐标系拓扑 与第一格栅的区域一致,使得第二格栅的区域与第一格栅的区域一一对应,每个区域的通量与第一格栅的相应区域成比例,根据 对于透镜的局部透射率,两个栅格中的任一个是旋转非对称的; 通过该对应关系确定从第一高斯球到第二高斯球的磁通重分布方向映射函数,由此可以根据第二格子的区域将来自源的任何光线分配给输出光束中的方向,其中 光线落下,使得重定向的光线落在第一格栅的相应区域中; 建立一个或多个透镜表面以使源光线重定向到输出光线,使用矢量的折射或反射定律导出每个表面的法向矢量的分布; 从法向量的分布中,依次产生每个透镜表面,从最近的源开始并向外移动。

    Optical concentrator, especially for solar photovoltaics
    9.
    发明授权
    Optical concentrator, especially for solar photovoltaics 有权
    光收集器,特别适用于太阳能光伏

    公开(公告)号:US08101855B2

    公开(公告)日:2012-01-24

    申请号:US12075830

    申请日:2008-03-14

    IPC分类号: H01L31/00 G02B17/00

    摘要: In one embodiment of a solar concentrator, a tailored aspheric lens augments the solar-concentrator performance of a concave mirror, widening its acceptance angle for easier solar tracking, making it more cost-competitive for ultra-large arrays. The molded-glass secondary lens also includes a short rod for reducing the peak concentration on a photovoltaic cell that is optically bonded to the end of the rod. The Simultaneous Multiple Surface method produces lens shapes suitable for a variety of medium and high concentrations by mirrored dishes. Besides the rotationally symmetric parabolic mirror itself, other aspheric deviations therefrom are described, including a free-form rectangular mirror that has its focal region at its edge.

    摘要翻译: 在太阳能集中器的一个实施例中,定制的非球面透镜增加了凹面镜的太阳能集中器性能,扩大了其接受角度以便于太阳能追踪,从而使其成为超大型阵列的成本优势。 模制玻璃次级透镜还包括用于降低光学电池的峰值浓度的短棒,该光伏电池光学地接合到杆的端部。 同时多面法同时产生适合各种中高浓度镜片的镜片形状。 除了旋转对称的抛物面镜本身之外,还描述了其中的非球面偏差,包括其边缘具有其焦点区域的自由矩形矩形镜。