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    Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter
    3.
    发明申请
    Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter 失效
    具有双折射表面和具有可变间距或角度的微结构特征的物品用作模糊滤镜

    公开(公告)号：US20070031140A1

    公开(公告)日：2007-02-08

    申请号：US11196887

    申请日：2005-08-04

    申请人： Rolf Biernath ,  Robert Brott ,  William Merrill ,  John Huizinga ,  William Black

    发明人： Rolf Biernath ,  Robert Brott ,  William Merrill ,  John Huizinga ,  William Black

    IPC分类号： G03B7/099

    CPC分类号： G02B5/1866 ,  G02B5/1833 ,  G02B27/46

    摘要： An optical low pass filter or blur filter, and method of making the filters, using an article having a birefringent surface for refracting incoming light when used with an image sensor. The birefringent surface of the article, such as a film, is structured or tilted such that, when the blur filter is placed within an optical path between a lens and the image sensor, the birefringent surface causes refraction of a light signal in the optical path into multiple light signals each being incident upon different sub-pixels within the pixels in the image sensor to prevent or reduce artifacts, such as undesirable color moiré effects, in the resulting digital image. The structures on the surface have a variable pitch or angles. The variable pitch can include a periodic, aperiodic, or quasi-aperiodic pitch, to reduce diffractive artifacts in the resulting image.

    摘要翻译： 光学低通滤波器或模糊滤波器以及使用具有用于折射入射光的双折射表面的物品与图像传感器一起制造的方法。 物品如薄膜的双折射表面被构造或倾斜，使得当模糊滤光器被放置在透镜和图像传感器之间的光路内时，双折射表面引起光路中的光信号的折射 分成多个光信号，每个光信号入射到图像传感器中的像素内的不同子像素上，以防止或减少所产生的数字图像中的伪像，例如不期望的色莫尔效应。 表面上的结构具有可变的间距或角度。 可变节距可以包括周期性，非周期性或准非周期性节距，以减少所得图像中的衍射伪影。

    Uniaxially oriented articles having structured surface
    6.
    发明申请
    Uniaxially oriented articles having structured surface 审中-公开
    具有结构化表面的单轴取向制品

    公开(公告)号：US20060141218A1

    公开(公告)日：2006-06-29

    申请号：US11184024

    申请日：2004-12-23

    申请人： Rolf Biernath ,  Olester Benson ,  Andrew Ouderkirk ,  William Merrill ,  David Kowitz ,  Catherine Tarnowski ,  Robert Brott

    发明人： Rolf Biernath ,  Olester Benson ,  Andrew Ouderkirk ,  William Merrill ,  David Kowitz ,  Catherine Tarnowski ,  Robert Brott

    IPC分类号： B32B3/00

    CPC分类号： B29C55/04 ,  G02B5/1833 ,  G02B5/3083 ,  Y10T428/24479

    摘要： Uniaxially Oriented Articles Having Structured Surface A process for uniaxially stretching films is having a structured surface comprising a geometric feature is described. The process provides a film in which the cross sectional shape of the feature after stretching is substantially identical to the cross sectional shape of the feature prior to stretching. Structured surface articles are also described. The articles have substantially the same uniaxial orientation throughout the film, including the geometric structure. Uniaxially oriented articles having structured surfaces are described. The articles have dimensional relationships as follows: the (a) ratio of the thickness of the body (Z′) to the height of the geometric feature (P′) is at least about 2; or (b) the ratio of body thickness to feature height (Z′:P′) is at least about 1 and the ratio of feature height to feature separation (P′:FS′) is at least about 1; or (c) the ratio of body thickness to feature height (Z′:P′) is at least about 1 and the ratio of feature base width to feature separation (BW′:FS′) is at least about 1; or (d) the ratio of body thickness to feature base width (Z′:BW′) is at least about 3; or (e) the ratio of body thickness to feature base width (Z′:BW′) is at least about 1 and the ratio of feature height to feature separation (P′:FS′) is at least about 1; or (f) the ratio of body thickness to feature base width (Z′:BW′) is at least about 1 and the ratio of feature base width to feature separation (BW′:FS′) is at least about 1; or (g) the ratio of feature base width to feature top width (BW′:TW′) is at least about 2 and the ratio of feature base width to feature separation (BW′:FS′) is at least about 1.

    摘要翻译： 具有结构化表面的单轴定向制品用于单轴拉伸膜的方法具有包括几何特征的结构化表面。 该方法提供了拉伸后的特征的横截面形状与拉伸前的特征的横截面形状基本相同的膜。 还描述了结构化表面制品。 制品在整个薄膜中具有基本相同的单轴取向，包括几何结构。 对具有结构化表面的单轴取向制品进行说明。 制品的尺寸关系如下：（a）身体（Z'）的厚度与几何特征（P'）的高度之比至少为2; 或（b）身体厚度与特征高度之比（Z'：P'）至少约为1，特征高度与特征分离比（P'：FS'）至少约为1; 或（c）身体厚度与特征高度之比（Z'：P'）至少约为1，特征基本宽度与特征分离（BW'：FS'）之比至少为1; 或（d）体厚与特征基准宽度（Z'：BW'）的比值至少为3; 或（e）身体厚度与特征基准宽度（Z'：BW'）的比值至少约为1，特征高度与特征分离比（P'：FS'）至少约为1; 或（f）身体厚度与特征基准宽度（Z'：BW'）的比值至少约为1，特征基础宽度与特征分离（BW'：FS'）之比至少为1; 或（g）特征基本宽度与特征顶部宽度（BW'：TW'）的比率至少约为2，并且特征基本宽度与特征分离（BW'：FS'）的比率至少为约1。

    Article having a birefringent surface for use as a blur filter
    7.
    发明申请
    Article having a birefringent surface for use as a blur filter 审中-公开
    具有用作模糊滤光器的双折射表面的物品

    公开(公告)号：US20060170797A1

    公开(公告)日：2006-08-03

    申请号：US11050616

    申请日：2005-02-02

    申请人： Rolf Biernath ,  Robert Brott ,  William Merrill

    发明人： Rolf Biernath ,  Robert Brott ,  William Merrill

    IPC分类号： H04N9/64

    CPC分类号： G02B27/46 ,  G02B5/3083

    摘要： An optical low pass filter or blur filter, and method of making the filters, using an article having a birefringent surface for refracting incoming light when used with an image sensor. The birefringent surface of the article, such as a film, is structured or tilted such that, when the blur filter is placed within an optical path between a lens and the image sensor, the birefringent surface causes refraction of a light signal in the optical path into multiple light signals each being incident upon different sub-pixels within the pixels in the image sensor to prevent or reduce artifacts, such as undesirable color moiré effects, in the resulting digital image.

    摘要翻译： 光学低通滤波器或模糊滤波器以及使用具有用于折射入射光的双折射表面的物品与图像传感器一起制造的方法。 物品如薄膜的双折射表面被构造或倾斜，使得当模糊滤光器被放置在透镜和图像传感器之间的光路内时，双折射表面引起光路中的光信号的折射 分成多个光信号，每个光信号入射到图像传感器中的像素内的不同子像素上，以防止或减少所产生的数字图像中的伪像，例如不期望的色莫尔效应。

    Uniaxially oriented birefringent article having a structured surface
    8.
    发明申请
    Uniaxially oriented birefringent article having a structured surface 审中-公开
    具有结构化表面的单轴取向双折射制品

    公开(公告)号：US20060204720A1

    公开(公告)日：2006-09-14

    申请号：US11184022

    申请日：2004-12-23

    申请人： Rolf Biernath ,  William Merrill ,  Andrew Ouderkirk ,  Olester Benson ,  David Kowitz ,  Catherine Tarnowski ,  Robert Brott

    发明人： Rolf Biernath ,  William Merrill ,  Andrew Ouderkirk ,  Olester Benson ,  David Kowitz ,  Catherine Tarnowski ,  Robert Brott

    IPC分类号： B32B3/00

    CPC分类号： C08J5/18 ,  Y10T428/24479

    摘要： An article, such as a film, comprising a body portion and a surface portion is provided. The body portion has (i) a first and a second surface, and (ii) first and second in-plane axes that are orthogonal with respect to each other and a third axis that is mutually orthogonal to the first and second in-plane axis in a thickness direction of the body. The surface portion comprises a linear geometric feature disposed on the first surface of the body in a direction substantially parallel to the first in-plane axis of the polymeric body. The article has (i) a first index of refraction (n1) along the first in-plane axis, (ii) a second index of refraction (n2) along the second in-plane axis, and (iii) a third index of refraction (n3) along the third axis, wherein n2 and n3 are substantially the same but substantially different from n1; and wherein the uniaxially oriented polymeric film has a relative birefringence of 0.3 or less and wherein the ratio of the thickness of the body to the height of the geometric feature is at least 2.

    摘要翻译： 提供了包括主体部分和表面部分的诸如胶片的物品。 主体部分具有（i）第一和第二表面，以及（ii）彼此正交的第一和第二平面轴线以及与第一和第二平面轴线相互正交的第三轴线 在身体的厚度方向上。 表面部分包括在基本上平行于聚合物主体的第一平面轴线的方向上设置在主体的第一表面上的线性几何特征。 该物品具有（i）沿着第一面内轴线的第一折射率（n <1> 1），（ii）沿着第一平面轴线的第二折射率（n <2 ） 第二面内轴线，以及（iii）沿着第三轴线的第三折射率（n 3/3），其中n 2和n 3 < SUB>基本上相同但是与n 1个基本不同; 并且其中所述单轴取向聚合物膜具有0.3或更小的相对双折射，并且其中所述主体的厚度与所述几何特征的高度之比至少为2。