SURFACE-ENHANCED RAMAN SCATTERING BIOSENSOR

    公开(公告)号:US20220113257A1

    公开(公告)日:2022-04-14

    申请号:US17500700

    申请日:2021-10-13

    Abstract: A general purpose sensor architecture integrating a surface enhanced Raman spectroscopy (SERS) substrate, a diffractive laser beam delivery substrate and a diffractive infrared detection substrate is provided that can be used to implement a low-cost, compact lab-on-a-chip biosensor that can meet the needs of large-scale infectious disease testing. The sensor architecture can also be used in any other application in which molecules present in the liquid, gaseous or solid phases need to be characterized reliably, cost-effectively and with minimal intervention by highly skilled personnel.

    3D display apparatus
    13.
    发明申请
    3D display apparatus 审中-公开
    3D显示装置

    公开(公告)号:US20130135588A1

    公开(公告)日:2013-05-30

    申请号:US13373754

    申请日:2011-11-29

    Abstract: A 3D display is provided comprising at least one light source, a Switchable Bragg Grating device, a microdisplay and a projection lens system. In one embodiment of the invention the SBG device converts the source light into colour sequential illumination and, and provides sequential orthogonally polarized illumination of the microdisplay for each colour. In one embodiment of the invention the first SBG device converts the source light into colour sequential illumination and, and provides sequential first and second sense circularly polarized illumination. The microdisplay is updated with alternating left and right eye perspective images for stereoscopic viewing.

    Abstract translation: 提供了包括至少一个光源,可切换布拉格光栅装置,微显示器和投影透镜系统的3D显示器。 在本发明的一个实施例中,SBG装置将源光源转换为彩色顺序照明,并为每种颜色提供微显示器的顺序正交偏振照明。 在本发明的一个实施例中,第一SBG装置将源光源转换为彩色顺序照明,并且提供连续的第一和第二感测圆偏振照明。 微显示器用交替的左眼和右眼透视图更新,用于立体观看。

    Waveguide Display
    16.
    发明申请
    Waveguide Display 审中-公开

    公开(公告)号:US20180284440A1

    公开(公告)日:2018-10-04

    申请号:US15765243

    申请日:2016-10-04

    Abstract: An optical display comprises: a first waveguide comprising a first surface and a second surface, an input coupler, a fold grating, and an output grating. The input coupler receives collimated first wavelength light from an Input Image Node causes the light to travel within the first waveguide via total internal reflection between the first surface and the second surface to the fold grating. The fold grating provides pupil expansion in a first direction directs the light to the output grating via total internal reflection between the first surface and the second surface. The output grating provides pupil expansion in a second direction different than the first direction and causes the light to exit the first waveguide from the first surface or the second surface. At least one of the input coupler, fold grating and output grating is a rolled k-vector grating, and the fold grating is a dual interaction grating.

    LASER DESPECKLER BASED ON ANGULAR DIVERSITY
    17.
    发明申请
    LASER DESPECKLER BASED ON ANGULAR DIVERSITY 审中-公开
    基于角度多样性的激光打标机

    公开(公告)号:US20160170226A1

    公开(公告)日:2016-06-16

    申请号:US15043806

    申请日:2016-02-15

    Abstract: A device for reducing laser speckle using a micro scanner and a holographic diffuser. The micro scanner includes a first transparent optical substrate with an input surface and an output surface and a second transparent optical substrate with an input surface and an output surface and a variable refractive index medium sandwiched between the output surface of the first substrate and the input surface of the second substrate. Transparent electrodes are applied to the output surface of the first substrate and the input surface of the second substrate. The electrodes are coupled to a voltage generator. The input surface of the first substrate is optically coupled to a laser source. The input surface of the second substrate is configured as an array of prismatic elements. At least one of the input surface of the first substrate or the output surfaces of the second substrate is planar.

    Abstract translation: 一种使用微型扫描仪和全息漫射器减少激光散斑的装置。 微型扫描器包括具有输入表面和输出表面的第一透明光学基底和具有输入表面和输出表面的第二透明光学基底和夹在第一基底的输出表面和输入表面之间的可变折射率介质 的第二基板。 将透明电极施加到第一基板的输出表面和第二基板的输入表面。 电极耦合到电压发生器。 第一衬底的输入表面光学耦合到激光源。 第二基板的输入表面被配置为棱镜元件阵列。 第一基板的输入表面或第二基板的输出表面中的至少一个是平面的。

    Holographic waveguide display
    18.
    发明授权
    Holographic waveguide display 有权
    全息波导显示

    公开(公告)号:US09335604B2

    公开(公告)日:2016-05-10

    申请号:US13998799

    申请日:2013-12-11

    Abstract: A holographic waveguide display comprises: a source of light; at least one switchable grating layer comprising a multiplicity of grating regions each switchable between a diffracting state and a non diffracting state; means for spatio-temporally modulating light from the source to provide image light comprising at least one beam deflector for scanning the light in at least one of two orthogonal directions and at least one modulator for amplitude modulating the light. A first scanned angular range of light is diffracted through a first area into a first field of view by a first set of grating regions, and through a second area into to the first field of view by a second set of grating regions. Each grating region of the first and second sets has a first grating function. The first and second areas lie within an exit pupil of the display.

    Abstract translation: 全息波导显示器包括:光源; 至少一个可切换光栅层,包括多个光栅区域,每个光栅区域可在衍射状态和非衍射状态之间切换; 用于时空调制来自光源的光的装置,以提供包括至少一个用于扫描两个正交方向中的至少一个的光的至少一个光束偏转器的图像光,以及至少一个用于幅度调制光的调制器。 光的第一扫描角度范围通过第一组光栅区域通过第一区域被衍射成第一视场,并且通过第二组光栅区域通过第二区域进入第一视场。 第一和第二组的每个光栅区域具有第一光栅功能。 第一和第二区域位于显示器的出射光瞳内。

    Holographic Waveguide Display
    19.
    发明申请
    Holographic Waveguide Display 有权
    全息波导显示

    公开(公告)号:US20150160529A1

    公开(公告)日:2015-06-11

    申请号:US13998799

    申请日:2013-12-11

    Abstract: A holographic waveguide display comprises: a source of light; at least one switchable grating layer comprising a multiplicity of grating regions each switchable between a diffracting state and a non diffracting state; means for spatio-temporally modulating light from the source to provide image light comprising at least one beam deflector for scanning the light in at least one of two orthogonal directions and at least one modulator for amplitude modulating the light. A first scanned angular range of light is diffracted through a first area into a first field of view by a first set of grating regions, and through a second area into to the first field of view by a second set of grating regions. Each grating region of the first and second sets has a first grating function. The first and second areas lie within an exit pupil of the display.

    Abstract translation: 全息波导显示器包括:光源; 至少一个可切换光栅层,包括多个光栅区域,每个光栅区域可在衍射状态和非衍射状态之间切换; 用于时空调制来自光源的光的装置,以提供包括至少一个用于扫描两个正交方向中的至少一个的光的至少一个光束偏转器的图像光,以及至少一个用于幅度调制光的调制器。 第一扫描角度范围的光通过第一组光栅区域通过第一区域被衍射成第一视场,并且通过第二组光栅区域通过第二区域进入第一视场。 第一和第二组的每个光栅区域具有第一光栅功能。 第一和第二区域位于显示器的出射光瞳内。

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