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    POLARIZATION PRESERVING 3D SCREEN
    1.
    发明申请
    POLARIZATION PRESERVING 3D SCREEN 审中-公开
    极化保存3D屏幕

    公开(公告)号：WO2013063235A1

    公开(公告)日：2013-05-02

    申请号：PCT/US2012/061864

    申请日：2012-10-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  LIU, Yufeng ,  MILLER, Alan P.

    Inventor： LIU, Yufeng ,  MILLER, Alan P.

    IPC: G03B21/60

    CPC classification number: G03B21/604 ,  G02B27/26

    Abstract: Projection 3D systems and polarization preserving 3D screens are described that substantially increase polarization contrast ratio and viewing angle. The screen comprises a structured surface having a certain slope distribution, formed by a plurality of beads 120 with a layer 115 disposed thereon, which is coated by a reflective layer 110

    Abstract translation: 描述了投影3D系统和偏振保持3D屏幕，其大大增加了偏振对比度和视角。 屏幕包括具有一定斜率分布的结构化表面，其由多个具有布置在其上的层115的珠120形成，其由反射层110

    PROJECTION SYSTEM
    4.
    发明申请
    PROJECTION SYSTEM 审中-公开
    投影系统

    公开(公告)号：WO2012161824A1

    公开(公告)日：2012-11-29

    申请号：PCT/US2012/026768

    申请日：2012-02-27

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  LIU, Yufeng

    Inventor： LIU, Yufeng

    IPC: H04N13/04

    CPC classification number: H04N13/363 ,  H04N13/324 ,  H04N13/337 ,  H04N13/341

    Abstract: A projection system is disclosed. The projection system includes a projector that sequentially emits first images having a first polarization state for viewing by a left eye and second images having the first polarization state for viewing by a right eye. The projection system further includes a front projection screen that scatters the sequentially emitted first and second images. The front projection screen reflects light having the first polarization state, and absorbs light having a second polarization state, where the second polarization state is perpendicular to the first polarization state. The projection system also includes a viewing device that includes a first shutter that is synchronized with the projector and transmits the first, but not the second, images scattered by the front projection screen. The viewing device also includes a second shutter that is synchronized with the projector and transmits the second, but not the first, images scattered by the front projection screen. Each of the first and second shutters has a pass axis that lies along the first polarization axis and a block axis that lies along the second polarization axis.

    Abstract translation: 公开了一种投影系统。 该投影系统包括：投影机，其依次发射具有用于左眼观看的第一偏振状态的第一图像和具有第一偏振状态的第二图像，以便通过右眼观看。 投影系统还包括分散顺序地发射的第一和第二图像的前投影屏幕。 前投影屏幕反射具有第一偏振态的光，并且吸收具有第二偏振状态的光，其中第二偏振状态垂直于第一偏振状态。 投影系统还包括观察装置，其包括与投影仪同步的第一快门，并且透射第一而不是第二个由前投影屏散射的图像。 观看装置还包括与投影仪同步的第二快门，并且透射第二而不是第一个由前投影屏散射的图像。 第一和第二百叶窗中的每一个都具有沿着第一偏振轴位于的通过轴线和位于第二偏振轴上的块轴线。

    FRONT PROJECTION SCREEN WITH HIGH CONTRAST
    6.
    发明申请
    FRONT PROJECTION SCREEN WITH HIGH CONTRAST 审中-公开
    具有高对比度的前投影屏幕

    公开(公告)号：WO2010080775A1

    公开(公告)日：2010-07-15

    申请号：PCT/US2010/020176

    申请日：2010-01-06

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  LIU, YuFeng, ,  YUST, David, T., ,  JORDAN, Myron, K., ,  OUDERKIRK, Andrew, J.,

    Inventor： LIU, YuFeng, ,  YUST, David, T., ,  JORDAN, Myron, K., ,  OUDERKIRK, Andrew, J.,

    IPC: G03B21/56

    CPC classification number: G03B21/56

    Abstract: A light diffusing optical construction is disclosed. The optical construction includes an asymmetric optical diffuser that scatters light in a first direction with a first viewing angle A H, and in a second direction orthogonal to the first direction with a second viewing angle A V . The ratio A H /A V is at least about 2. The optical construction also includes a substantially specular reflector that reflects light that is not scattered by the asymmetric optical diffuser. The substantially specular reflector has a first average reflectance R o in the visible at a substantially zero incident angle and a second average reflectance R 45 in the visible at a substantially 45 degree incident angle. The ratio R o /R 45 is at least about 1.5. The optical construction also includes a light absorbing layer that absorbs light that is not reflected by the specular reflector.

    Abstract translation: 公开了一种光散射光学结构。 该光学结构包括一个不对称的光学漫射器，其以第一视角AH在第一方向散射光，并在第二方向上以第二视角AV与第一方向垂直。 比例AH / AV至少为2.光学结构还包括基本上镜面的反射器，其反射不被非对称光学漫射器散射的光。 基本上镜面的反射器在可见光中具有基本为零入射角的第一平均反射率Ro和可见光以大致45度入射角的第二平均反射率R45。 比率Ro / R45至少约为1.5。 光学结构还包括吸收未被镜面反射体反射的光的光吸收层。

    TRAFFIC SIGNAL SYSTEMS
    8.
    发明申请
    TRAFFIC SIGNAL SYSTEMS 审中-公开
    交通信号系统

    公开(公告)号：WO2009123932A2

    公开(公告)日：2009-10-08

    申请号：PCT/US2009038613

    申请日：2009-03-27

    Applicant: 3M INNOVATIVE PROPERTIES CO ,  LIU YUFENG

    Inventor： LIU YUFENG

    IPC: G08G1/095

    CPC classification number: G08G1/095

    Abstract: The present application relates to a traffic light including a light source from which propagates light rays and at least one layer of a structured brightness enhancement film and at least one layer of a light control film. The structured brightness enhancement film and the light control film are positioned adjacent to the light source such that a light ray emitted by the light source propagates through the brightness enhancement film and the light control film.

    Abstract translation: 本申请涉及一种交通信号灯，其包括传播光线的光源和至少一层结构化亮度增强膜和至少一层光控膜的交通信号灯。 结构化亮度增强膜和光控制膜位于光源附近，使得由光源发射的光线通过亮度增强膜和光控制膜传播。

    OPTICAL STACK HAVING BIREFRINGENT LAYER OF OPTICALLY SYMMETRICAL CRYSTALLITES
    9.
    发明申请
    OPTICAL STACK HAVING BIREFRINGENT LAYER OF OPTICALLY SYMMETRICAL CRYSTALLITES 审中-公开
    具有光学对称晶体的双层光学堆叠

    公开(公告)号：WO2012005879A1

    公开(公告)日：2012-01-12

    申请号：PCT/US2011/040177

    申请日：2011-06-13

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  WEBER, Michael, F. ,  LIU, Yufeng ,  JOHNSON, Stephen, A. ,  YUST, David, T.

    Inventor： WEBER, Michael, F. ,  LIU, Yufeng ,  JOHNSON, Stephen, A. ,  YUST, David, T.

    IPC: G02B5/30

    CPC classification number: G02B5/3083 ,  G02B5/305

    Abstract: An optical stack (400) having a plurality of alternating polymeric layers (401, 402) is described. The alternating layers may be alternating birefringent (syndiotactic polystyrene, sPS) and isotropic (CoPENa) layers, or alternating positively and negatively birefringent layers. Birefringent layers are made using polymers which form optically symmetrical crystallites upon stretching of the polymer. The optical stack has a large refractive index difference in the x- direction (the stretching direction) and small refractive index differences in the y- and z-directions (the non - stretching directions). The optical stack can be made using standard film tentering methods and may be a multilayer reflective polarizer.

    Abstract translation: 描述了具有多个交替聚合层（401,402）的光学堆叠（400）。 交替层可以是交替的双折射（间同立构聚苯乙烯，sPS）和各向同性（CoPENa）层，或交替的正负双折射层。 使用在聚合物拉伸时形成光学对称微晶的聚合物制备双折射层。 光学堆叠在x方向（拉伸方向）上的折射率差大，y方向和z方向（非拉伸方向）的折射率差小。 光学堆叠可以使用标准薄膜拉制方法制成，并且可以是多层反射偏振器。

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