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    OPTICAL SYSTEM
    17.
    发明申请
    OPTICAL SYSTEM 有权

    公开(公告)号：US20250153449A1

    公开(公告)日：2025-05-15

    申请号：US19023680

    申请日：2025-01-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Andrew J. Ouderkirk ,  Timothy L. Wong ,  Zhisheng Yun ,  Erin A. McDowell ,  Gregg A. Ambur

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

    Abstract: An optical system includes a partial reflector having an average optical reflectance of at least 30% in a plurality of wavelengths, an image source disposed to emit image light toward the partial reflector, and a reflective polarizer disposed proximate the partial reflector. The reflective polarizer is curved about two orthogonal axes and can include at least one layer substantially optically uniaxial at at least one location. The image light may be transmitted by the reflective polarizer after it is first reflected by the reflective polarizer. Substantially any chief light ray 10 having at least first and second wavelengths at least 150 nm apart in the plurality of wavelengths and emitted by the image source and transmitted by a stop surface or exit pupil of the optical system has a color separation distance of less than 1.5 percent of a field of view.

    Optical systems
    18.
    发明授权
    Optical systems 有权

    公开(公告)号：US12007595B2

    公开(公告)日：2024-06-11

    申请号：US18254437

    申请日：2021-11-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： John D. Le ,  Gregg A. Ambur ,  Zhisheng Yun ,  Robert M. Jennings ,  Arthur L. Kotz ,  Timothy L. Wong ,  David T. Yust ,  Timothy J. Nevitt ,  Kayla A. McGrath

    IPC: G02B5/30 ,  G02B1/04

    CPC classification number: G02B5/305 ,  G02B1/041

    Abstract: An optical assembly includes an integral lens assembly having one or more lenses bonded to each other with spaced apart major first and second lens surfaces. First and second optical films are bonded to respective major first and second lens surfaces. The first and second optical films includes a plurality of polymeric layers. Each of the polymeric layers have an average thickness of less than about 500 nm. For a substantially normally incident light and a visible wavelength range the plurality of polymeric layers in the first optical film has an average optical transmittance and an average optical reflectance of greater than about 70% for a first polarization state and an orthogonal second polarization state, respectively. The plurality of polymeric layers in the second optical film has an average optical transmittance of greater than about 70% for at least one of the first and second polarization states.

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