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    • 1. 发明授权
    • Design of low insertion loss, single-mode polymeric waveguides
    • 低插入损耗单模聚合物波导的设计
    • US06487354B1
    • 2002-11-26
    • US09846699
    • 2001-05-01
    • Paul M. FermKevin BattellLawrence W. Shacklette
    • Paul M. FermKevin BattellLawrence W. Shacklette
    • G02B610
    • G02B6/1221G02B6/13G02B2006/12107
    • The invention provides organic optical waveguide devices which are lithographically formed and employ polymeric materials having low propagation loss. An optical waveguide has a substrate; a polymeric buffer layer on a surface of the substrate; a thin, polymeric undercladding layer on a surface of the buffer layer; a pattern of a light-transmissive, polymeric core on the surface of the undercladding layer; and a polymeric overcladding layer on a top surface of the core and on sidewalls of the core and on a portion of the undercladding layer; the undercladding layer having a thickness of from about 10 percent to about 50 percent a thickness of the core. The core has an index of refraction nc which is greater than an index of refraction of the overcladding layer no and also greater than an index of refraction of the undercladding layer nu; wherein &Dgr;n=nc−no, and wherein the difference between nc and the index of refraction of the buffer nb is at least about 1.5 times &Dgr;n.
    • 本发明提供了光刻形成的有机光波导器件,并且使用具有低传播损耗的聚合材料。 光波导具有基板; 在所述基底的表面上的聚合物缓冲层; 在缓冲层的表面上的薄的聚合物底层; 在下包层的表面上的透光聚合物芯的图案; 以及在所述芯的顶表面和所述芯的侧壁上和所述下包层的一部分上的聚合物外包层; 所述下包层具有芯的厚度的约10%至约50%的厚度。 芯的折射率nc大于外包层no的折射率,并且大于下包层nu的折射率; 其中DELTAn = nc-no,并且其中nc和缓冲器nb的折射率之间的差异是DELTAn的至少约1.5倍。
    • 5. 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。
    • 6. 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。