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    Optical retarder segments
    1.
    发明授权
    Optical retarder segments 有权

    公开(公告)号：US11726249B2

    公开(公告)日：2023-08-15

    申请号：US17873420

    申请日：2022-07-26

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Zhisheng Yun ,  Michael L. Steiner ,  Jo A. Etter ,  Timothy L. Wong ,  Gilles J. Benoit ,  John D. Le ,  Erin A. McDowell ,  Susan L. Kent

    IPC: G02B5/30 ,  G02B27/01

    CPC classification number: G02B5/3083 ,  G02B27/0172 ,  G02B2027/0118

    Abstract: An optical element includes an optical surface configured to receive light at a predetermined wavelength in a range from about 400 nm to about 1000 nm. The optical surface is defined by a vertical axis and a horizontal axis defining four Cartesian quadrants sequentially numbered in a counter-clockwise direction. A first longitudinal section of the optical surface is centered on the vertical axis and a second longitudinal section of the optical surface is centered on the horizontal axis. The first and second longitudinal section each extend across opposite edges of the optical surface and have a same substantially uniform retardance for substantially normally incident light. The optical element includes four discrete retarder sections. Each retarder section is disposed on a respective Cartesian quadrant of the optical surface and has a retardance difference from the substantially uniform retardance of the optical surface that is greater than zero.

    Optical system
    2.
    发明授权
    Optical system 有权

    公开(公告)号：US12153219B2

    公开(公告)日：2024-11-26

    申请号：US17611449

    申请日：2020-05-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Zhisheng Yun ,  Timothy L. Wong ,  Susan L. Kent ,  Erin A. McDowell ,  John D. Le ,  Jo A. Etter

    IPC: G02B27/01 ,  G02B3/00 ,  G02B5/08 ,  G02B5/26 ,  G02B5/30

    Abstract: Optical systems for displaying an image are described. The optical systems include a first and second optical lenses separated by air. 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 first optical lens where the major surface can have a best-fit spherical radius of curvature greater than about 500 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.

    OPTICAL FILM AND POLARIZING BEAM SPLITTER
    4.
    发明申请
    OPTICAL FILM AND POLARIZING BEAM SPLITTER 有权

    公开(公告)号：US20220004015A1

    公开(公告)日：2022-01-06

    申请号：US17292972

    申请日：2019-12-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： David J.W. Aastuen ,  Zhisheng Yun ,  Timothy J. Nevitt ,  John D. Le ,  Susan L. Kent ,  Gilles J. Benoit ,  David T. Yust

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

    Abstract: An optical film and a polarizing beam splitter (PBS) including the optical film is described. The optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack. When the optical film is disposed between, and adhered to, hypotenuses of first and second prisms to form a PBS and a cone of light is incident on the PBS making an incident angle of about 40 to 50 degrees with the optical film, the PBS has: an average optical reflectance Rs greater than about 95% for a first polarization state; an average optical transmittance Ts less than about 0.012% for the first polarization state; an average optical transmittance Tp less than about 98.5% for a second polarization state; and an average optical reflectance Rp less than about 0.25% for the second polarization state.

    OPTICAL FILM AND POLARIZING BEAM SPLITTER
    7.
    发明申请
    OPTICAL FILM AND POLARIZING BEAM SPLITTER 审中-公开

    公开(公告)号：US20200319389A1

    公开(公告)日：2020-10-08

    申请号：US16753444

    申请日：2018-10-18

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Zhisheng Yun ,  Timothy J. Nevitt ,  John D. Le ,  Susan L. Kent

    IPC: G02B5/30 ,  G02B27/28

    Abstract: Optical films and polarizing beam splitters including the optical films are described. In some cases, the optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack, each optical stack comprising a plurality of polymeric interference layers reflecting and transmitting light primarily by optical interference in a same predetermined wavelength range. Each optical stack has interference layers closer to the one or more spacer layers that reflect longer wavelengths and interference layers farther from the one or more spacer layers that reflect shorter wavelengths.

    Optical System
    8.
    发明公开
    Optical System 审中-公开

    公开(公告)号：US20240219697A1

    公开(公告)日：2024-07-04

    申请号：US18554658

    申请日：2022-04-05

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： John D. Le ,  Timothy L. Wong ,  Bing Hao ,  Gregg A. Ambur ,  Susan L. Kent

    IPC: G02B17/08 ,  G02B1/04 ,  G02B5/10 ,  G02B5/30 ,  G02B27/01

    CPC classification number: G02B17/0856 ,  G02B1/041 ,  G02B5/10 ,  G02B5/3033 ,  G02B5/3083 ,  G02B27/0172

    Abstract: An optical system includes an optical cavity defined by a reflective polarizer and a partial reflector. The optical cavity includes one or more optical components including a first optical lens spaced apart from the reflective polarizer. Each optical component within the optical cavity has a substantially uniform retardance or a maximum retardance of less than about 10 nm. The optical system includes a second optical lens disposed outside the optical cavity. The reflective polarizer is disposed on and conforms to a major surface of the second optical lens. The second optical lens has a substantially nonuniform retardance and a maximum retardance in a largest active region of the second optical lens of greater than about 12 nm.

    OPTICAL FILM AND POLARIZING BEAM SPLITTER
    9.
    发明公开
    OPTICAL FILM AND POLARIZING BEAM SPLITTER 审中-公开

    公开(公告)号：US20230333298A1

    公开(公告)日：2023-10-19

    申请号：US18342125

    申请日：2023-06-27

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Zhisheng Yun ,  Timothy J. Nevitt ,  John D. Le ,  Susan L. Kent

    IPC: G02B5/30 ,  G02B27/28

    CPC classification number: G02B5/305 ,  G02B27/283

    Abstract: Optical films and polarizing beam splitters including the optical films are described. In some cases, the optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack, each optical stack comprising a plurality of polymeric interference layers reflecting and transmitting light primarily by optical interference in a same predetermined wavelength range. Each optical stack has interference layers closer to the one or more spacer layers that reflect longer wavelengths and interference layers farther from the one or more spacer layers that reflect shorter wavelengths.

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