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    • 85. 发明申请
    • BACKLIGHT USING SURFACE-EMITTING LIGHT SOURCES
    • 背光使用表面发光光源
    • US20070091613A1
    • 2007-04-26
    • US11255909
    • 2005-10-21
    • Junwon LeeDavid KesslerXiang-Dong Mi
    • Junwon LeeDavid KesslerXiang-Dong Mi
    • F21V13/00
    • G02F1/133602G02F1/133603G02F1/133611G02F2001/133507G02F2001/133607
    • A lighting apparatus for providing illumination, comprising: a) an array of surface-emitting light sources, wherein each surface-emitting light source directs a source illumination beam, over a beam angle θ, toward an illumination plane; b) an array of beam spreading optical elements corresponding with the array of surface-emitting light sources, wherein refraction of the source illumination beam by each beam spreading optical element substantially satisfies a distribution function: dy/dθ=ƒ(θ) wherein y is a radial distance along the illumination plane from the optical axis of the beam-spreading optical element, dy is an arbitrarily small increment of the radial distance, dθ is the angular increment of the beam angle corresponding to dy, and ƒ(θ) is the distribution function for the angular distribution of the light source, such that each beam spreading optical element adjusts the luminous intensity of the source illumination beam from the corresponding surface-emitting light source to provide a uniformized illumination beam directed toward the illumination plane; and, c) an array of beam-divergence reducing lens elements, wherein each beam-divergence reducing lens element reduces the angular divergence of a corresponding uniformized illumination beam, providing illumination having improved uniformity and reduced beam divergence thereby.
    • 一种用于提供照明的照明装置,包括:a)表面发射光源的阵列,其中每个表面发射光源将束照射光束在束角θ上朝向照明平面引导; b)与表面发射光源阵列相对应的光束扩展光学元件的阵列,其中由每个光束扩展光学元件的源照射光束的折射基本上满足分布函数:<?in-line-formula description =“In 线=公式“end =”lead“?> dy / dtheta = f(theta)<?in-line-formula description =”In-line Formulas“end =”tail“?>其中y是沿着照明的径向距离 平面从光束扩展光学元件的光轴,dy是径向距离的任意小的增量,dta是对应于dy的光束角的角增量,f(θ)是角分布的分布函数 使得每个光束扩展光学元件调节来自相应的表面发射光源的源照射光束的发光强度,以提供指向照明平面的均匀照明光束; 以及c)光束发散减少透镜元件的阵列,其中每个光束发散减小透镜元件减小对应的均匀照明光束的角度发散,从而提供具有改善的均匀性并且由此减小光束发散的照明。
    • 86. 发明授权
    • Polarizing turning film using total internal reflection
    • 使用全内反射偏光车片
    • US07139125B1
    • 2006-11-21
    • US11302103
    • 2005-12-13
    • Xiang-Dong Mi
    • Xiang-Dong Mi
    • G02B5/30
    • G02B6/0053G02B6/0056
    • A light redirecting article redirects light toward a target angle. The light redirecting article has an input surface for accepting incident illumination over a range of incident angles and an output surface with a plurality of light redirecting structures, each light redirecting structure having an internal reflection surface oriented at a first angle with respect to the plane of the input surface and an exit surface for emitting an output light at an emitted light angle, wherein the exit surface is oriented at a second angle relative the plane of the input surface. For incident illumination at a principal angle greater than 60 degrees from normal, light is reflected from the internal reflection surface and emitted from the exit surface at an emitted light angle that is within 5 degrees of the target angle.
    • 光重定向文章将光线重定向到目标角度。 光转向制品具有用于在入射角范围内接受入射照明的输入表面和具有多个光重定向结构的输出表面,每个光重定向结构具有相对于第一角度的第一角度定向的内反射面 所述输入表面和出射表面用于以发射的光角发射输出光,其中所述出射表面相对于所述输入表面的平面以第二角度定向。 对于与正常大于60度的主角的入射照明,光从内部反射表面反射并以距离目标角度5度内的发射光角从出射表面发射。
    • 89. 发明申请
    • Dark state light recycling film and display
    • 暗态光回收膜和显示屏
    • US20060055844A1
    • 2006-03-16
    • US10939656
    • 2004-09-13
    • Xiang-Dong Mi
    • Xiang-Dong Mi
    • G02F1/1335
    • G02F1/133536G02F1/1336G02F2001/133507G02F2001/133562G02F2203/66
    • A liquid crystal device display (20) has a backlight unit (56) for providing substantially unpolarized illumination, a rear polarizer (50b) disposed proximate the backlight unit (56) for receiving the incident substantially unpolarized illumination and transmitting substantially polarized illumination, a liquid crystal spatial light modulator for forming a display beam by selective, pixel-wise modulation of the polarization of the substantially polarized illumination, and a reflective polarizer (52a) disposed between the liquid crystal spatial light modulator and a front polarizer (50a), the reflective polarizer (52a) reflecting a portion of dark state light back toward the backlight unit (56).
    • 液晶显示器(20)具有用于提供基本上非偏振照明的背光单元(56),靠近背光单元(56)设置的后偏振器(50b),用于接收入射基本上非偏振照明并传输基本上偏振的照明, 液晶空间光调制器,用于通过对基本偏振的照明的偏振进行选择性的,像素方式的调制来形成显示光束;以及设置在液晶空间光调制器和前偏振器(50a)之间的反射偏振器(52a) 反射偏振器(52a)将一部分暗态光反射回背光单元(56)。