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    • 2. 发明申请
    • OPTICAL FILMS
    • 光学胶片
    • WO2009067576A1
    • 2009-05-28
    • PCT/US2008/084136
    • 2008-11-20
    • 3M INNOVATIVE PROPERTIES COMPANYWHITNEY, Leland, R.
    • WHITNEY, Leland, R.
    • G02B5/04G02F1/1335
    • G02B6/0053
    • An optical film structure for backlit displays having two films, both in prisms up configuration. The first film, closer to the light guide, has an array of generally symmetric 90-degree prisms facing the viewer. The second film, farther from the light guide, has an array of generally asymmetric prisms facing the viewer, with one face of the prisms inclined at about 45 degrees and the other face generally perpendicular to the plane of the backlight. The prisms of the first and second films may have an azimuthal angle between them, and may have different pitches from each other. The film structure recycles a portion of the light from the light guide, thereby helping to increase uniformity over the area of the display. The film structure also compresses the light emerging from the light guide, thereby providing a more sharply peaked brightness distribution for the viewer.
    • 背光显示器的光学膜结构,具有两个棱镜形状的膜。 靠近导光体的第一胶片具有面向观察者的大致对称的90度棱镜阵列。 距离光导更远的第二胶片具有面向观察者的大致不对称棱镜的阵列,棱镜的一个面倾斜约45度,另一个面大致垂直于背光平面。 第一和第二膜的棱镜可以具有它们之间的方位角,并且可以具有彼此不同的间距。 胶片结构使来自导光体的光的一部分再循环,从而有助于增加显示器区域的均匀性。 胶片结构还压缩从光导中出现的光,从而为观看者提供更锐利的峰值亮度分布。
    • 4. 发明申请
    • LINEAR ILLUMINATION SOURCE
    • 线性照明源
    • WO2002081929A2
    • 2002-10-17
    • PCT/US2002/004100
    • 2002-02-11
    • 3M INNOVATIVE PROPERTIES COMPANY
    • BOYD, Gary, T.WHITNEY, Leland, R.MILLER, Richard, A.
    • F12V
    • G02B6/0041G02B6/0021G02B6/0048G02B6/4298
    • Shaped refractive articles having compound curved surfaces enable a light source to provide substantially uniform illumination of a linear or planar target. The refractive articles can comprise an input edge or face and an output edge or face, the input edge or face having at least one shaped notch or cavity that can at least partially envelop a light source, wherein the notch or cavity has at least two oppositely signed curved portions shaped to provide substantially uniform illumination of a target by the source. The articles can also be optically coupled to and at least partially envelop a light source, and can have an output edge or surface having at least two oppositely signed curved portions shaped to provide substantially uniform illumination of a target region by the source. The shaped articles can be used in, for example, lighting devices, frontlights, backlights and electronic displays.
    • 具有复合弯曲表面的成形折射制品使得光源能够提供线性或平面靶的基本均匀的照明。 所述折射制品可以包括输入边缘或面部以及输出边缘或面部,所述输入边缘或面具有至少一个成形的切口或空腔,其至少部分地包围光源,其中所述凹口或腔具有至少两个相对的 被标记的弯曲部分成形为提供源的目标的基本上均匀的照明。 物品还可以光学耦合到光源并且至少部分地包围光源,并且可以具有输出边缘或表面,该输出边缘或表面具有至少两个相对有符号的弯曲部分,其被成形为提供源的目标区域的基本均匀的照明。 成型制品可用于例如照明装置,前灯,背光和电子显示器中。
    • 10. 发明申请
    • LIGHT GUIDE FOR USE WITH BACKLIT DISPLAY
    • 背光显示使用指南
    • WO2003016784A1
    • 2003-02-27
    • PCT/US2002/019615
    • 2002-06-20
    • 3M INNOVATIVE PROPERTIES COMPANY
    • WHITNEY, Leland, R.BOYD, Gary, T.KOTCHICK, Keith, M.EPSTEIN, Kenneth, A.COBB, Sanford, Jr.,WATSON, Philip, E.LAMB, David, J.GARDINER, Mark, E.
    • F21V8/00
    • G02B6/0038G02B6/0046G02B6/0065Y10S385/901
    • A light guide (14) including a light guide body having a light re-directing side (22) positioned opposite from a light output side (20). A plurality of elongate prisms are located adjacent the light output side of the light guide body. The prisms extend side-by-side relative to one another along lengths. The prisms include upper edges defining heights of the prisms. The upper edges extend along the lengths of the prisms. Each upper edge includes a plurality of edge segments having different magnitudes of slope. The light guide (14) also includes a plurality of light extraction structures located adjacent the light re-directing side (22) of the light guide body for reflecting light toward the light output side (20). The light extraction structures include elongated projections (50) each having a plateau segment (54) and first and second facets (56, 58). The elongated projections (50) are separated by lands (52) that are recessed relative to the plateau segments (54). The first and second facets (56, 58) extend from the plateau segments (54) to the lands (52).
    • 一种导光体(14),包括具有与光输出侧(20)相对定位的光重新定向侧(22)的导光体。 多个细长棱镜位于导光体的光输出侧附近。 棱镜沿着长度相对于彼此并排延伸。 棱镜包括限定棱镜高度的上边缘。 上边缘沿着棱镜的长度延伸。 每个上边缘包括具有不同幅度的斜率的多个边缘段。 导光体(14)还包括多个光导提取结构,其位于导光体的光重导侧(22)附近,用于向光输出侧(20)反射光。 光提取结构包括每个具有平台段(54)和第一和第二小平面(56,58)的细长突起(50)。 细长突起(50)由相对于平台段(54)凹陷的平台(52)分开。 第一和第二小面(56,58)从平台段(54)延伸到平台(52)。