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58 条记录 (耗时 0.045 秒)

    Displays and Sensors Integrated with Multi-State Cholesteric Liquid Crystal Devices
    41.
    发明申请
    Displays and Sensors Integrated with Multi-State Cholesteric Liquid Crystal Devices 有权
    与多态胆固醇液晶器件集成的显示器和传感器

    公开(公告)号：US20120293733A1

    公开(公告)日：2012-11-22

    申请号：US13453655

    申请日：2012-04-23

    申请人： Le Li ,  Yongxin Tang ,  Haiping Yu ,  Jie Yang ,  Jiangbin Zhao

    发明人： Le Li ,  Yongxin Tang ,  Haiping Yu ,  Jie Yang ,  Jiangbin Zhao

    IPC分类号： G02F1/1335

    CPC分类号： G02F1/13718

    摘要： A sensing device may include a cholesteric crystal device including two optically transparent substrates; a liquid crystal having portions adapted for producing a plurality of optical states, said liquid crystal being arranged between the two optically transparent substrates; an optical sensor for changing optical states of respective portions of said liquid crystal to produce a range of respective optical states including all optical states produced by said liquid crystal ranging from one state to any combination of broadband reflection, tunable narrow band reflection, light scattering, and transparency in accordance with an amount of voltage applied across said cholesteric crystal device for changing optical states.

    摘要翻译： 感测装置可以包括胆甾醇晶体装置，其包括两个光学透明基板; 具有适于产生多种光学状态的部分的液晶，所述液晶布置在两个光学透明基板之间; 一种光学传感器，用于改变所述液晶的各部分的光学状态，以产生包括由所述液晶产生的所有光学状态的范围，所述光学状态从一种状态到宽带反射，可调窄带反射，光散射， 并且根据用于改变光学状态的所述胆甾型晶体装置两端施加的电压量的透明度。

    Wide steering-range motionless optical beam steering device, and methods of manufacture
    42.
    发明授权
    Wide steering-range motionless optical beam steering device, and methods of manufacture 失效
    宽方向盘静止光束转向装置及其制造方法

    公开(公告)号：US07146070B1

    公开(公告)日：2006-12-05

    申请号：US10687682

    申请日：2003-10-18

    申请人： Le Li ,  Haiping Yu ,  Ben Y. Tang ,  Zhan Chen

    发明人： Le Li ,  Haiping Yu ,  Ben Y. Tang ,  Zhan Chen

    IPC分类号： G02B6/35 ,  G02B26/08

    CPC分类号： G02F1/1326 ,  G02B6/3512 ,  G02B6/3596 ,  G02F2203/06 ,  G02F2203/24

    摘要： Electro-optically operated transmitters containing a wave guide liquid crystal beam steering device in series of fine beam steering devices as well as electrically switchable mirror are disclosed. The wave guide beam steering device is constructed on a planar lightwave circuit that contains a plurality of liquid crystal switching elements intersecting a plurality of optical wave guides and one main wave guide that has a curvature for light propagation. The transceiver is capable of continuously steering multiple beams of light into separate independent directions with a field-of-regard close to 4π. The resulted optical transmitter device is motionless, polarization sensitive or insensitive, stable within the operational spectral region, and stable versus temperature. When an optical receiver is integrated, the transmitters become transceivers. The invention also includes the methods for manufacturing the wave guide beam steering device.

    摘要翻译： 公开了一种电光转换器，其包含一系列精细光束转向装置的波导液晶束转向装置以及可电切换镜。 波导光束转向装置构造在包含与多个光波导相交的多个液晶开关元件和具有光传播曲率的一个主波导的平面光波回路上。 收发器能够将多个光束连续地转向独立的独立方向，其中视场接近4pi。 所产生的光发射机设备在工作光谱区域内是静止的，极化敏感的或不敏感的，稳定的，并且与温度相对稳定。 当光接收机集成时，发射机成为收发器。 本发明还包括制造波导光束转向装置的方法。

    Reflective strain gauge and polarization-sensitive devices
    46.
    发明申请
    Reflective strain gauge and polarization-sensitive devices 审中-公开
    反射应变仪和偏振敏感器件

    公开(公告)号：US20050087021A1

    公开(公告)日：2005-04-28

    申请号：US10764263

    申请日：2004-01-23

    申请人： Gregory Crawford ,  Darran Cairns ,  Christopher Bowley ,  Sorasak Danworaphong ,  Adam Fontecchio ,  Sadeg Faris ,  Le Li

    发明人： Gregory Crawford ,  Darran Cairns ,  Christopher Bowley ,  Sorasak Danworaphong ,  Adam Fontecchio ,  Sadeg Faris ,  Le Li

    IPC分类号： G01B11/16 ,  G01L1/24 ,  G02F1/1334

    CPC分类号： G01B11/165 ,  G01B11/18 ,  G01L1/241 ,  G02F1/13342

    摘要： A reflective strain gauge includes an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection or transmission grating capable of reflecting or transmitting light of a selected wavelength, and means for adhering the film to a surface of a workpiece for monitoring the strain at said surface. A change in the nature of the reflected light is an indication of strain. Also included is a polarizing material having an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection grating capable of reflecting light of a selected wavelength, wherein the reflection grating of the H-PDLC film is oriented, such that the refractive index parallel to said axis of orientation (ne) is greater than the refractive index perpendicular to said axis (no).

    摘要翻译： 反射应变计包括在基质聚合物中包含液晶（LC）液滴层的全息形成的聚合物分散液晶（H-PDLC）膜，该H-PDLC膜具有能够反射或透射光的反射或透射光栅 以及用于将膜粘附到工件的表面以用于监测所述表面处的应变的装置。 反射光的性质的变化表明了应变。 还包括具有在基体聚合物中包含液晶（LC）液滴层的全息形成的聚合物分散液晶（H-PDLC）膜的偏振材料，该H-PDLC膜具有能够反射光的反射光栅 选择的波长，其中所述H-PDLC膜的反射光栅被取向，使得平行于所述取向轴（n）的折射率大于垂直于所述轴线的折射率（n ）。

    Optical router switch array and method for manufacture
    47.
    发明授权
    Optical router switch array and method for manufacture 失效
    光路由器开关阵列及制造方法

    公开(公告)号：US06885414B1

    公开(公告)日：2005-04-26

    申请号：US09968201

    申请日：2001-10-01

    申请人： Le Li

    发明人： Le Li

    IPC分类号： C09K19/02 ,  G02B5/32 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1347 ,  G02F1/137 ,  G02F1/29

    CPC分类号： G02F1/13718 ,  G02F1/133365 ,  G02F1/13471 ,  G02F1/292 ,  G02F2201/307 ,  G02F2203/06

    摘要： An optical router switch array includes a plurality of switchable mirror elements having holographic liquid crystal arranged in stack cells. Each of the mirror elements is isolated electrically from the other switchable mirror elements by a plurality of substrates alternative arranged between the switchable mirror elements. Holographic gratings are formed on the holographic liquid crystal by exposure to holography at predetermined incident angles. A single switchable mirror element can also be provided in cases where an array is not required. The switchable mirror elements are polarization insensitive, stable within the operational spectral region, and stable versus temperature. The invention also includes methods for manufacturing a single switchable mirror element and the optical arrray.

    摘要翻译： 光路由器开关阵列包括多个具有布置在堆叠单元中的全息液晶的可切换镜元件。 每个镜元件通过多个可替代地布置在可切换镜元件之间的基板与其它可切换镜元件电隔离。 全息光栅通过以预定的入射角曝光于全息图而形成在全息液晶上。 在不需要阵列的情况下也可以提供单个可切换镜像元件。 可切换镜面元件是极化不敏感的，在工作光谱区域内是稳定的，并且与温度相对稳定。 本发明还包括用于制造单个可切换镜子元件和光学辐射体的方法。

    Super broad-band polarizing reflective material
    49.
    发明申请
    Super broad-band polarizing reflective material 失效
    超宽带偏振反射材料

    公开(公告)号：US20050030446A1

    公开(公告)日：2005-02-10

    申请号：US10888960

    申请日：2004-07-09

    申请人： Sadeg Faris ,  Le Li ,  Yingqiu Jiang

    发明人： Sadeg Faris ,  Le Li ,  Yingqiu Jiang

    IPC分类号： G02B5/30 ,  G02F1/1335

    CPC分类号： G02B5/3016

    摘要： Disclosed are super broadband circularly polarizing film materials and novels methods of fabricating and using the same. The circularly polarizing materials are made from a film of material, such as a CLC polymer having a cholesteric order, in which a liquid crystal material, such as a nematic liquid crystal material, is distributed in a non-linear fashion across the thickness of the film in a plurality of liquid crystal-rich and liquid crystal-depleted sites in the CLC polymer. The pitch of the helices of the CLC molecules in the polyermized CLC material varies in a non-linear (e.g. exponential) manner along the depth dimension (i.e. transverse to the surface) thereof. The resulting circularly polarizing materials have reflection and transmission characteristics over bands of operation approaching 2000 nm. Depending on the final spiral structure of the materials utilized, the CLC circularly polarizing materials reflect either left-handed or right-handed circularly polarized light.

    摘要翻译： 公开了超宽带圆偏振膜材料及其制造和使用方法。 圆偏振材料由诸如具有胆甾醇级的CLC聚合物的材料膜制成，其中液晶材料如向列型液晶材料以非线性方式分布在整个薄膜的厚度上 在CLC聚合物中的多个液晶富集和液晶贫化位点中的膜。 多孔CLC材料中的CLC分子的螺旋的间距沿其沿着深度尺寸（即横向于其表面）的非线性（例如指数）方式变化。 所得到的圆偏振材料在接近2000nm的操作带上具有反射和透射特性。 根据所使用的材料的最终螺旋结构，CLC圆偏振材料反射左旋或右旋圆偏振光。