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185 条记录 (耗时 0.077 秒)

    Nonpolarizing beamsplitter
    31.
    发明授权
    Nonpolarizing beamsplitter 失效
    非极化分束器

    公开(公告)号：US5808798A

    公开(公告)日：1998-09-15

    申请号：US623342

    申请日：1996-03-27

    申请人： Michael F. Weber ,  Andrew J. Ouderkirk ,  Carl A. Stover ,  James M. Jonza

    发明人： Michael F. Weber ,  Andrew J. Ouderkirk ,  Carl A. Stover ,  James M. Jonza

    IPC分类号： G02B5/28 ,  G02B5/30 ,  G02B27/10 ,  G02B27/28 ,  G02B1/10

    CPC分类号： G02B27/283 ,  G02B27/142 ,  G02B5/287 ,  G02B5/305 ,  G02B5/3083 ,  Y10S359/90

    摘要： A nonpolarizing beamsplitter is provided, which includes a multilayered stack of alternating layers of a first material and a second material. The first material layers are uniaxially birefringent, and the second material layers are optionally uniaxially birefringent or isotropic. The layers have index of refraction relationships such that for an incident beam having a useful bandwidth, a p-polarized component and an s-polarized component striking the beamsplitter at any angle of incidence .theta. within a desired range, the beamsplitter exhibits substantially the same average reflectivity for the p-polarized component of the incident beam as for the s-polarized component. The invention also includes a method of making a nonpolarizing beamsplitter.

    摘要翻译： 提供非偏振分束器，其包括第一材料和第二材料的交替层的多层叠层。 第一材料层是单轴双折射的，第二材料层可选地是单轴双折射的或各向同性的。 这些层具有折射率关系，使得对于具有有用带宽的入射光束，在所需范围内以任何入射角θ射入分光器的p偏振分量和s偏振分量，分束器显示出基本上相同的平均值 对于s偏振分量，入射光束的p偏振分量的反射率。 本发明还包括制造非偏振分束器的方法。

    Direct-lit backlight with angle-dependent birefringent diffuser
    32.
    发明授权
    Direct-lit backlight with angle-dependent birefringent diffuser 有权
    带角度的双折射扩散器的直射背光

    公开(公告)号：US08007118B2

    公开(公告)日：2011-08-30

    申请号：US11843178

    申请日：2007-08-22

    申请人： Mark B. O'Neill ,  Carl A. Stover ,  Michael F. Weber

    发明人： Mark B. O'Neill ,  Carl A. Stover ,  Michael F. Weber

    IPC分类号： G02B5/30 ,  F21V9/14

    CPC分类号： G02B5/0257 ,  G02B5/0242 ,  G02B5/0278 ,  G02B5/3008 ,  G02F1/133606 ,  G02F2001/133607 ,  G02F2202/40

    摘要： A direct-lit backlight includes a diffuse reflector disposed in front of a light source. The diffuse reflector has a continuous phase material and a disperse phase material, at least one of which is birefringent, and the disperse phase material is formed into particles having a transverse dimension less than 1 micrometer for efficient visible light scattering. The continuous and disperse phases have refractive indices tailored so the diffuse reflector transmits light from the light source substantially more strongly for obliquely incident light than for normally incident light to provide bulb-hiding characteristics.

    摘要翻译： 直射背光包括设置在光源前面的漫反射器。 漫反射器具有连续相材料和分散相材料，其中至少一种是双折射的，并且分散相材料形成为具有小于1微米的横向尺寸的颗粒，以实现有效的可见光散射。 连续和分散相具有定制的折射率，使得漫反射器对于倾斜入射光基本上比通常入射光更强地透射来自光源的光，以提供灯泡隐藏特性。

    Brightness enhancement film
    39.
    发明授权
    Brightness enhancement film 有权
    亮度增强膜

    公开(公告)号：US06760157B1

    公开(公告)日：2004-07-06

    申请号：US09624947

    申请日：2000-07-25

    申请人： Richard C. Allen ,  Lockwood W. Carlson ,  Andrew J. Ouderkirk ,  Michael F. Weber ,  Arthur L. Kotz ,  Timothy J. Nevitt ,  Carl A. Stover ,  Biswaroop Majumdar

    发明人： Richard C. Allen ,  Lockwood W. Carlson ,  Andrew J. Ouderkirk ,  Michael F. Weber ,  Arthur L. Kotz ,  Timothy J. Nevitt ,  Carl A. Stover ,  Biswaroop Majumdar

    IPC分类号： G02B530

    CPC分类号： G02B5/3083 ,  G02B5/3008 ,  G02B5/305

    摘要： An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix in combination with light directing materials to enable control of light emitted from a lighting fixture or display. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film, and the light directing materials are chosen to control the direction of polarized light reflected from or transmitted by the optical film.

    摘要翻译： 提供了一种光学膜，其包括聚焦颗粒的分散相，该分散相设置在连续双折射矩阵内，与导光材料结合，以控制从照明器材或显示器发出的光。 膜通常在一个或多个方向上通过拉伸取向。 选择分散相颗粒的尺寸和形状，分散相的体积分数，膜厚度和取向量，以获得所需波长的所需程度的漫反射和全部透射所需波长的电磁辐射 选择光导材料来控制从光学膜反射或透射的偏振光的方向。