中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

34 records (took 0.018 seconds)

    SHAPED OPTICAL FILMS AND METHODS OF SHAPING OPTICAL FILMS
    21.
    发明申请
    SHAPED OPTICAL FILMS AND METHODS OF SHAPING OPTICAL FILMS 有权

    公开(公告)号：US20220274359A1

    公开(公告)日：2022-09-01

    申请号：US17744917

    申请日：2022-05-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Robert M. Jennings ,  William T. Fay ,  Jo A. Etter ,  Arthur L. Kotz ,  David J.W. Aastuen

    IPC: B29D11/00 ,  B29C51/42

    Abstract: An optical film includes a plurality of polymeric layers shaped along orthogonal first and second directions. A first curve being an intersection of the optical film with a first plane orthogonal to the second direction and to a reference plane has a best-fit first circular arc subtending a first angle at a center of curvature of the first circular arc of greater than 180 degrees where the optical film has a maximum projected area in the reference plane. A second curve being an intersection of the optical film with a second plane orthogonal to the first direction and to the reference plane has a best-fit second circular arc subtending a second angle at a center of curvature of the second circular arc of at least 30 degrees. Reflectance and transmittance of the optical film are described.

    METHOD OF FABRICATING AN OPTICAL ASSEMBLY
    22.
    发明申请
    METHOD OF FABRICATING AN OPTICAL ASSEMBLY 有权

    公开(公告)号：US20220146803A1

    公开(公告)日：2022-05-12

    申请号：US17583598

    申请日：2022-01-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jo A. Etter ,  Timothy L. Wong ,  Zhisheng Yun ,  Gregg A. Ambur ,  Benjamin G. Sonnek ,  Robert M. Jennings

    IPC: G02B17/08 ,  G02B5/30 ,  G02B27/28

    Abstract: A method of fabricating an optical assembly includes providing a first mold having a first curved mold surface; placing a substantially flat reflective polarizer; on the first curved mold surface and applying at least one of pressure and heat to at least partially conform the reflective polarizer to the first curved mold surface; providing a second mold comprising a second mold surface, the first and second mold surfaces defining a mold cavity therebetween; substantially filling the mold cavity with a flowable material having a temperature greater than a glass transition temperature of the reflective polarizer; and solidifying the flowable material to form a solid optical element bonded to the reflective polarizer. A maximum variation of an orientation of a pass polarization state across the bonded reflective polarizer is within about 3 degrees of a maximum variation of the orientation of the pass polarization state across the substantially flat reflective polarizer.

    Optical system
    24.
    发明授权
    Optical system 有权

    公开(公告)号：US11262565B2

    公开(公告)日：2022-03-01

    申请号：US16495356

    申请日：2018-05-14

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jo A. Etter ,  Timothy L. Wong ,  Zhisheng Yun ,  Gregg A. Ambur ,  Benjamin G. Sonnek ,  Robert M. Jennings

    IPC: G02B17/08 ,  G02B5/30 ,  G02B27/28

    Abstract: Optical systems for displaying an image are described. The optical systems include spaced apart first and second optical lenses. A partial reflector is disposed on and conforms to a major surface of the first optical lens where the major surface can have a best-fit spherical radius of curvature in a range from 20 mm to 200 mm. A reflective polarizer is disposed on and conforms to a major surface of the second optical lens where the major surface can have a best-fit spherical radius of curvature in a range from 14 mm to 250 mm. A retarder layer is disposed between the reflective polarizer and the partial reflector. The first optical lens can have an optical birefringence of less than 15 nm/cm and the second optical lens can have an optical birefringence of greater than 15 nm/cm. A method of fabricating an optical assembly is described.

    Display system
    28.
    发明授权
    Display system 有权

    公开(公告)号：US12233612B2

    公开(公告)日：2025-02-25

    申请号：US17329678

    申请日：2021-05-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Andrew J. Ouderkirk ,  Zhisheng Yun ,  Timothy L. Wong ,  Erin A. McDowell ,  Jo A. Etter ,  Robert M. Jennings

    IPC: G02B27/28 ,  B29D11/00 ,  G02B5/30 ,  G02B13/00 ,  G02B17/08 ,  G02B27/00 ,  G02B27/01 ,  G02B27/09 ,  G02B27/14 ,  G03B21/28

    Abstract: A display system includes an optical system and a curved display disposed to emit light toward the optical system. The optical system includes at least a first optical lens, a partial reflector and a reflective polarizer. The optical system has an optical axis such that a light ray propagating along the optical axis passes through the first optical lens the partial reflector and the reflective polarizer without being substantially refracted. At least one major surface of the optical system can be rotationally asymmetric about the optical axis. A major surface of the optical system may have a first portion defined by a first equation and a second portion adjacent the first portion defined by a different equation. The first optical lens may have a contoured edge adapted to be placed adjacent an eye of a viewer and substantially conform to the viewer's face.

    CURVED REFLECTIVE POLARIZER
    30.
    发明申请
    CURVED REFLECTIVE POLARIZER 有权

    公开(公告)号：US20230089314A1

    公开(公告)日：2023-03-23

    申请号：US18060033

    申请日：2022-11-30

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Robert M. Jennings ,  Gregg A. Ambur ,  Jo A. Etter ,  Benjamin G. Sonnek ,  Zhisheng Yun

    IPC: G02B5/30 ,  G02B6/27 ,  B32B7/035 ,  G02B27/14 ,  G02B6/293

    Abstract: A curved reflective has at least one location having a radius of curvature in a range from about 6 mm to about 1000 mm. Each location on the reflective polarizer has a maximum reflectance greater than about 70% for a block polarization state, a maximum transmittance greater than about 70% for an orthogonal pass polarization state, and a minimum transmittance for the block polarization state. For a continuous first portion of the reflective polarizer extending between different first and second edges of the reflective polarizer and defining disjoint second and third portions of the reflective polarizer, the minimum transmittance of the reflective polarizer for the block polarization state is higher at each location in at least 70% of the first portion than at each location in at least 70% of the second portion and at each location in at least 70% of the third portion.

Patent Agency Ranking