OPTICAL SHUTTER BASED ON SUB-WAVELENGTH GRATINGS ACTUATED BY MICROELECTROMECHANICAL SYSTEMS
    22.
    发明申请
    OPTICAL SHUTTER BASED ON SUB-WAVELENGTH GRATINGS ACTUATED BY MICROELECTROMECHANICAL SYSTEMS 审中-公开
    基于由微电子系统实施的子波长光栅的光学切换器

    公开(公告)号:US20160033755A1

    公开(公告)日:2016-02-04

    申请号:US14814425

    申请日:2015-07-30

    CPC classification number: G02B26/02 G02B5/1809

    Abstract: Methods and systems for control of electromagnetic waves are disclosed. An optical shutter includes a sub-wavelength grating. Each beam of the grating can be controlled by electrostatic or mechanical forces in order to increase or decrease the gap between each beam. Electrostatic or acoustic control of the grating allows an optical shutter to switch on and off.

    Abstract translation: 公开了用于控制电磁波的方法和系统。 光学快门包括亚波长光栅。 可以通过静电或机械力来控制光栅的每个光束,以便增加或减少每个光束之间的间隙。 光栅的静电或声学控制允许光学快门打开和关闭。

    FLAT RETROREFLECTORS
    23.
    发明申请
    FLAT RETROREFLECTORS 有权
    平面回归器

    公开(公告)号:US20150160384A1

    公开(公告)日:2015-06-11

    申请号:US14558201

    申请日:2014-12-02

    Abstract: A retroreflector device is described, which includes a lens component operable for focusing radiation, which is incident thereto at an angle of incidence. The retroreflector also includes a mirror component operable for reflecting the radiation focused by the lens component back along the angle of incidence. The lens component and/or the mirror component includes a quasi-periodic array of elements, each of which comprises a dimension smaller than a wavelength of the radiation.

    Abstract translation: 描述了后向反射器装置,其包括可操作用于以入射角入射到其上的聚焦辐射的透镜部件。 后向反射器还包括可以沿着入射角将由透镜部件聚焦的辐射反射回的反射镜部件。 透镜部件和/或反射镜部件包括元件的准周期性阵列,每个元件的尺寸小于辐射的波长。

    INCOHERENT HOLOGRAPHIC IMAGING WITH METASURFACES

    公开(公告)号:US20190113885A1

    公开(公告)日:2019-04-18

    申请号:US16160849

    申请日:2018-10-15

    Abstract: A birefringent metasurface lens formed by an array of nanoposts generates different phase profiles for different incident electromagnetic waves of different polarization. A first polarization is focused at a first focal length, while a second polarization is focused at a second focal length. A variable phase retarder and a polarizer generate interference patterns for each phase difference between the two incident polarizations. The interference patterns are used to generate a hologram, allowing reconstruction of the image of an object.

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