中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.02 seconds)

    POLARIZATION-SELECTIVE VARIFOCAL LIQUID LENS
    1.
    发明公开
    POLARIZATION-SELECTIVE VARIFOCAL LIQUID LENS 审中-公开

    公开(公告)号：US20240319509A1

    公开(公告)日：2024-09-26

    申请号：US18734641

    申请日：2024-06-05

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Afsoon Jamali ,  Changwon Jang ,  Sandro Pintz

    IPC: G02B27/01 ,  G02B3/14 ,  G02B5/30 ,  G02B26/00

    CPC classification number: G02B27/0172 ,  G02B3/14 ,  G02B5/3016 ,  G02B26/004

    Abstract: A varifocal liquid lens includes a body filled with two different fluids separated by an interface of a variable curvature across a clear aperture of the varifocal liquid lens. At least one of the first or second fluids is birefringent, such that a refractive index difference between the first and second fluids and resulting optical power of the varifocal liquid lens is dependent on polarization of impinging light. At a first light polarization, the first and second fluids may be matched in refractive index, while at a second, orthogonal light polarization, the first and second fluids may be mismatched in refractive index, whereby the first interface between the first and second fluids may have a variable, non-zero optical power for the second polarization while having a substantially non-variable, zero optical power for the first polarization of light.

    Polarization-selective varifocal liquid lens
    3.
    发明授权
    Polarization-selective varifocal liquid lens 有权

    公开(公告)号：US12235458B2

    公开(公告)日：2025-02-25

    申请号：US18734641

    申请日：2024-06-05

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Afsoon Jamali ,  Changwon Jang ,  Sandro Pintz

    IPC: G02B27/01 ,  G02B3/14 ,  G02B5/30 ,  G02B26/00

    Abstract: A varifocal liquid lens includes a body filled with two different fluids separated by an interface of a variable curvature across a clear aperture of the varifocal liquid lens. At least one of the first or second fluids is birefringent, such that a refractive index difference between the first and second fluids and resulting optical power of the varifocal liquid lens is dependent on polarization of impinging light. At a first light polarization, the first and second fluids may be matched in refractive index, while at a second, orthogonal light polarization, the first and second fluids may be mismatched in refractive index, whereby the first interface between the first and second fluids may have a variable, non-zero optical power for the second polarization while having a substantially non-variable, zero optical power for the first polarization of light.

    Switchable retardation device with reduced residual retardation
    10.
    发明授权
    Switchable retardation device with reduced residual retardation 有权

    公开(公告)号：US11435641B1

    公开(公告)日：2022-09-06

    申请号：US17137916

    申请日：2020-12-30

    Applicant: META PLATFORMS TECHNOLOGIES, LLC

    Inventor： Afsoon Jamali ,  Arman Boromand ,  Jasmine Soria Sears ,  Sandro Pintz

    IPC: G02F1/139 ,  G02F1/133

    Abstract: A switchable optical retardation device includes a switchable retardation element including liquid crystals and an electrical driver circuit. While in a first state, the switchable retardation element modifies light transmitted through the switchable retardation element by causing a phase shift of a first retardation angle. While in a second state, the switchable retardation element modifies the light transmitted through the switchable retardation element by causing a phase shift of a second retardation angle distinct from the first retardation angle. The electrical driver circuit provides a first voltage for placing the switchable retardation element in the first state and a second voltage for placing the switchable retardation element in the second state. The first voltage is greater than the second voltage, the second voltage is a non-zero voltage, and the electrical driver circuit alternatingly provides the first voltage and the second voltage with a predefined frequency.

Patent Agency Ranking