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    • 54. 发明授权
    • Light recycling illumination systems utilizing light emitting diodes
    • 利用发光二极管的回收照明系统
    • US07352124B2
    • 2008-04-01
    • US10952229
    • 2004-09-28
    • Karl W. BeesonScott M. Zimmerman
    • Karl W. BeesonScott M. Zimmerman
    • H05B33/00H05B33/24
    • G02B27/28H01L33/44H01L33/60Y10S362/80
    • This invention is an illumination system that incorporates a light emitting diode and a partially reflecting optical element. The light emitting diode emits internally generated light and reflects incident light with high reflectivity. The partially reflecting optical element transmits a first portion of the internally generated light and reflects a second portion of the internally generated light back to the light emitting diode, where the second portion is reflected by the light emitting diode. The partially reflecting optical element can be a non-absorbing reflecting polarizer or a wavelength conversion layer. Utilizing a partially reflecting optical element and light recycling can increase the effective brightness and the output efficiency of the illumination system.
    • 本发明是一种包含发光二极管和部分反射光学元件的照明系统。 发光二极管发射内部产生的光并反射具有高反射率的入射光。 部分反射光学元件透射内部产生的光的第一部分并将内部产生的光的第二部分反射回发光二极管,其中第二部分被发光二极管反射。 部分反射光学元件可以是非吸收性反射偏振器或波长转换层。 利用部分反射光学元件和光回收可以增加照明系统的有效亮度和输出效率。
    • 57. 发明授权
    • Illumination system employing an array of microprisms
    • 采用微棱镜阵列的照明系统
    • US5739931A
    • 1998-04-14
    • US691072
    • 1996-08-01
    • Scott M. ZimmermanKarl W. BeesonJanpu HouJohn C. Schweyen
    • Scott M. ZimmermanKarl W. BeesonJanpu HouJohn C. Schweyen
    • F21V5/02F21V8/00G02B6/00G02F1/335
    • G02B6/0053F21V5/02F21Y2103/00
    • An optical illumination system comprising a waveguide that accepts light generated by a diffuse light source and transmits the light via total internal reflection. Attached on one face of the waveguide is an array of microprisms, with each microprism having an light input surface parallel to a light output surface and at least two sidewalls tilted at an angle from the direction normal to the surface of the waveguide such that light escapes from the waveguide, reflects off the tilted sidewalls and emerges from the microprism as a spatially directed light source. An array of microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is a substantially collimated light source. The optical illumination system is advantageous for any application that requires a non diffuse or substantailly collimated that is both energy efficient and contained in a low profile assembly.
    • 一种光学照明系统,包括:波导,其接收由漫射光源产生的光,并通过全内反射传输光。 附着在波导的一个面上的是微棱镜阵列,其中每个微棱镜具有平行于光输出表面的光输入表面和至少两个侧向从垂直于波导表面的方向倾斜的角度,使得光逸出 从波导反射离开倾斜的侧壁并从微棱镜作为空间定向光源出射。 微透镜阵列可以被定位成接受微棱镜的输出,使得从微透镜出射的光是基本准直的光源。 光学照明系统对于需要非扩散或基本准直的任何应用是有利的,其既能量效率又包含在低轮廓组件中。
    • 58. 发明授权
    • Light directing optical structure
    • 光引导光学结构
    • US5555329A
    • 1996-09-10
    • US376709
    • 1995-01-23
    • Jerry KuperLeon SegalKarl W. BeesonScott M. Zimmerman
    • Jerry KuperLeon SegalKarl W. BeesonScott M. Zimmerman
    • G02B6/00F21S2/00F21V5/02F21V7/06F21V8/00F21Y101/00F21Y101/02G02B5/04G02F1/13357G02B6/34
    • G02B6/0053F21V5/02G02B6/0028F21Y2103/00G02B6/0018G02F2001/133607
    • A light directing optical structure is formed of a light waveguide preferably made of clear plastic; attached to or formed with the waveguide are a multiplicity of prisms. Each prism, due to its index of refraction, provides an aperature where light may escape the waveguide rather than remain confined due to total internal refraction. The light escaping the waveguide is reflected from a side face of the prism, and redirected in a desired direction. The propagation paths within the waveguide are such that the light emerging through the aperature is of only a fairly closely constrained range of angles; as a result the light that is redirected by the side face of the prism is of a similarly constrained range of angles.The geometry of the prism can be optimized to direct the output light perpendicular to the plane, or at a desired angle other than perpendicular. The optical structure can receive a light input along an edge, or along several edges, and its output beam is perpendicular to the structure or at some desired angle other than perpendicular. There is no restriction on the distribution and uniformity of the light input, yet the ouput is a directed and intensity controlled light source. Configurations are disclosed adapting the structure to several different possible light distribution patterns.
    • 光引导光学结构由优选由透明塑料制成的光波导形成; 与波导相连或形成有多个棱镜。 每个棱镜由于其折射率而提供了一种温度,其中光可以从波导中逸出,而不是由于内部全折射而保持有限。 离开波导的光从棱镜的侧面反射,并沿所需方向重新定向。 波导内的传播路径使得通过温度出现的光只有相当紧密的角度范围; 结果,由棱镜的侧面重定向的光具有相似的约束的角度范围。 可以优化棱镜的几何形状以将输出光垂直于平面或除垂直之外的期望角度引导。 光学结构可以沿着边缘或沿着几个边缘接收光输入,并且其输出光束垂直于该结构或者在除垂直之外的某个期望的角度处。 对光输入的分布和均匀性没有限制,但输出是有针对性和强度受控的光源。 公开了配置,使结构适应几种不同的可能的配光模式。
    • 59. 发明授权
    • Direct view display device with array of tapered waveguide on viewer side
    • 在观察器侧具有锥形波导阵列的直视显示装置
    • US5481385A
    • 1996-01-02
    • US86414
    • 1993-07-01
    • Scott M. ZimmermanKarl W. BeesonMichael J. McFarlandJames T. YardleyPaul M. Ferm
    • Scott M. ZimmermanKarl W. BeesonMichael J. McFarlandJames T. YardleyPaul M. Ferm
    • G02F1/1335
    • G02F1/133524
    • A direct view display including a light generating means for generating light, a modulating means for modulating light from said light generating means to form an image, and an image display means for displaying said image from said modulating means positioned adjacent to the light output surface of said modulating means, said display means comprising an array of tapered optical waveguides on a planar substrate the tapered end of each of said waveguides extending outward from said substrate and having a light input surface adjacent said substrate and a light output surface distal from said light input surface. The area of the light input surface of each waveguide is greater than the area of its light output surface, and the center-to-center distance between the light input surfaces of adjacent waveguides in said array is equal to the center-to-center distance between the light output surfaces thereof, so that the angular distribution of light emerging from the output surfaces of the waveguides is larger than the angular distribution of light entering the waveguides. Also, the waveguides in said array are separated by interstitial regions with a lower refractive index than the refractive index of said waveguides.
    • 一种包括用于产生光的发光装置的直视图显示器,用于调制来自所述光产生装置的光以形成图像的调制装置,以及用于显示所述图像从所述调制装置显示所述图像的图像显示装置,所述调制装置邻近所述光输出表面 所述调制装置,所述显示装置包括在平面基板上的锥形光波导阵列,每个所述波导的锥形端从所述基板向外延伸并且具有与所述基板相邻的光输入表面和远离所述光输入的光输出表面 表面。 每个波导的光输入表面的面积大于其光输出表面的面积,并且所述阵列中相邻波导的光输入表面之间的中心到中心距离等于中心到中心距离 在其光输出表面之间,使得从波导的输出表面出射的光的角分布大于进入波导的光的角分布。 此外,所述阵列中的波导通过具有比所述波导的折射率更低的折射率的间隙区域分开。
    • 60. 发明授权
    • Backlighting apparatus employing an array of microprisms
    • 采用微棱镜阵列的背光装置
    • US5396350A
    • 1995-03-07
    • US149219
    • 1993-11-05
    • Karl W. BeesonScott M. ZimmermanPaul M. Ferm
    • Karl W. BeesonScott M. ZimmermanPaul M. Ferm
    • F21V5/02F21V8/00G02B6/00G02F1/1335
    • G02B6/0053F21V5/02F21Y2103/00
    • An improved backlighting apparatus comprising a slab waveguide that accepts light rays generated by a light source and transmits the light rays via total internal reflection. Attached on one face of the slab waveguide is an array of microprisms, with each microprism having an light input surface parallel to a light output surface and at least one sidewall tilted at an angle from the direction normal to the surface of the waveguide such that light rays escape from the slab waveguide, reflect off the tilted sidewall and emerge from the microprism as a light source substantially perpendicular to the light output surface. An array of microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is substantially more perpendicular. The backlight apparatus is advantageously used as a backlighting means for flat panel electronic displays.
    • 一种改进的背光装置,包括平板波导,其接受由光源产生的光线并通过全内反射透射光线。 连接在平板波导的一个面上的是微棱镜阵列,其中每个微棱镜具有平行于光输出表面的光输入表面和至少一个从垂直于波导表面方向倾斜的一个侧壁,使得光 光线从平板波导中逃逸,反射出倾斜的侧壁并从微棱镜出射,作为基本垂直于光输出表面的光源。 微透镜阵列可以被定位成接受微棱镜的输出,使得从微透镜出射的光基本上更垂直。 背光装置有利地用作平板电子显示器的背光装置。