Non-Etched Flat Polarization-Selective Diffractive Optical Elements
    1.
    发明申请
    Non-Etched Flat Polarization-Selective Diffractive Optical Elements 审中-公开
    非蚀刻平面偏振选择性衍射光学元件

    公开(公告)号:US20090009668A1

    公开(公告)日:2009-01-08

    申请号:US12166988

    申请日:2008-07-02

    IPC分类号: G02F1/13 G03H1/02

    摘要: A polarization-selective diffractive optical element includes a liquid crystal polymer film supported by a substrate. The liquid crystal polymer film includes an array of pixels, each pixel encoded with a fixed liquid crystal director such that each liquid crystal director is aligned in a common plane perpendicular to the liquid crystal polymer film and provides a predetermined pattern of out-of-plane tilts. A size of the pixels in the array and the predetermined pattern are selected such that the liquid crystal polymer film forms a phase hologram for diffracting light polarized parallel to said common plane and a zeroth order diffraction grating for light polarized perpendicular to the said common plane. The non-etched and flat phase hologram is suitable for a wide range of applications.

    摘要翻译: 偏振选择性衍射光学元件包括由衬底支撑的液晶聚合物膜。 液晶聚合物膜包括像素阵列,每个像素用固定的液晶指示器编码,使得每个液晶指向矢在垂直于液晶聚合物膜的公共平面中排列,并提供预定的平面外的图案 倾斜 选择阵列中的像素和预定图案的大小,使得液晶聚合物膜形成用于衍射平行于所述公共平面的光的相位全息图和用于垂直于所述公共平面偏振的光的零级衍射光栅。 非蚀刻和平面相位全息图适用于广泛的应用。

    Multi-segment optical retarder for creating 3D images
    2.
    发明授权
    Multi-segment optical retarder for creating 3D images 有权
    用于创建3D图像的多段光学延迟器

    公开(公告)号:US08425042B2

    公开(公告)日:2013-04-23

    申请号:US12851969

    申请日:2010-08-06

    IPC分类号: G03B21/00

    摘要: A multi-segment optical retarder that can be used with or within a single projector for creating 3D images. The multi-segment optical retarder is coupled to an actuator used to effect some predetermined linear, rotary, or oscillating movement of the multi-segment optical retarder such that a fast axis orientation of each segment is substantially constant relative to itself over time and for a given area of incidence.

    摘要翻译: 可以与单个投影机一起使用或用于创建3D图像的多段光学延迟器。 多段光学延迟器耦合到用于实现多段光学延迟器的某些预定的线性,旋转或振荡运动的致动器,使得每个段的快速轴取向在时间上相对于其自身基本恒定,并且对于 给定发病面积。

    Non-etched flat polarization-selective diffractive optical elements
    3.
    发明授权
    Non-etched flat polarization-selective diffractive optical elements 有权
    非蚀刻平板偏振选择性衍射光学元件

    公开(公告)号:US08643822B2

    公开(公告)日:2014-02-04

    申请号:US12852105

    申请日:2010-08-06

    IPC分类号: G02F1/13 G02F1/1337

    摘要: A method of fabricating an optical element including a liquid crystal layer having a spatially-varying tilt angle includes coating a substrate with a linearly photopolymerizable polymer layer, irradiating the linearly photopolymerizable polymer layer with linearly polarized ultra-violet light at a oblique angle, and coating a layer of liquid crystal material on a surface of the irradiated linearly photopolymerizable polymer layer. The liquid crystal material has a predetermined relationship between its tilt angle and a total dose of the linearly polarized ultra-violet light. The linearly photopolymerizable polymer layer is irradiated with at least one dose of linearly polarized ultra-violet light that is sufficient to induce formation of a plurality of discrete regions within the liquid crystal layer having a larger in-plane birefringence than an adjacent or surrounding region.

    摘要翻译: 制造包括具有空间变化倾斜角的液晶层的光学元件的方法包括用线性可光聚合的聚合物层涂覆基板,以线性偏振的紫外线以倾斜的角度照射线性可光聚合的聚合物层, 在被照射线性可光聚合聚合物层的表面上的一层液晶材料。 液晶材料的倾斜角与线偏振紫外光的总剂量之间具有预定的关系。 线性可光聚合聚合物层被照射至少一种线性偏振紫外光,其量足以引起在相邻或周围区域内具有较大面内双折射的液晶层内形成多个离散区域。

    Tilted C-plate retarder compensator and display systems incorporating the same
    4.
    发明授权
    Tilted C-plate retarder compensator and display systems incorporating the same 有权
    倾斜的C型板延迟器补偿器和包括其的显示系统

    公开(公告)号:US08237876B2

    公开(公告)日:2012-08-07

    申请号:US11419872

    申请日:2006-05-23

    IPC分类号: G02F1/1335

    摘要: A C-plate compensator is disclosed for compensating the residual A-plate and C-plate retardance of a reflective liquid crystal on silicon (LCoS) display or a transmissive liquid crystal (LC) display in a projection display system. The C-plate incorporates a form-birefringent coating, whose retardance magnitude can be adjusted by tilting with respect to the display panel (X-Y) plane. The tilted plate is rotated about the Z-axis by a prescribed amount from the slow axis of the display panel. Criteria are described for choosing the tilt and rotation angles such that the contrast of the display system produced by the compensated panel is optimized.

    摘要翻译: 公开了用于补偿投影显示系统中的硅(LCoS)显示器或透射型液晶(LC)显示器上的反射液晶的残留A板和C板延迟的C板补偿器。 C板包含双折射形式的涂层,其延迟大小可以通过相对于显示面板(X-Y)平面倾斜来调节。 倾斜板从显示面板的慢轴绕Z轴旋转规定量。 描述了用于选择倾斜和旋转角度的标准,使得由补偿面板产生的显示系统的对比度被优化。

    Polarization controlling elements
    5.
    发明授权
    Polarization controlling elements 有权
    极化控制要素

    公开(公告)号:US07626661B2

    公开(公告)日:2009-12-01

    申请号:US11006379

    申请日:2004-12-07

    IPC分类号: G02F1/1335

    摘要: The invention relates to a polarization compensating element (PCE) for a liquid crystal, e.g. liquid crystal on silicon (LCoS), display system manufactured using a linearly photo-polymerizable polymer (LPP) for orienting a photo-polymerizable liquid crystal polymer (LCP) film. To decrease the reflection, polarization conversion, and interference events in an LPP/LCP assembly the ΔN birefringence value of the LCP material is minimized. Dielectric coatings are added at various locations throughout the assembly for minimizing the amount of reflection, polarization conversion, and interference effects and for suppressing spatial retardance ripples.

    摘要翻译: 本发明涉及一种用于液晶的偏振补偿元件(PCE),例如, 硅液晶(LCoS),使用用于取向光聚合性液晶聚合物(LCP)膜的线性光聚合性聚合物(LPP)制造的显示系统。 为了减少LPP / LCP组件中的反射,偏振转换和干涉事件,LCP材料的DeltaN双折射值被最小化。 在整个组件中的各个位置添加介电涂层,以最小化反射量,极化转换和干涉效应以及抑制空间延迟波纹。

    OPTICAL PICK-UP UNIT WITH TWO-MIRROR PHASE SHIFTER
    6.
    发明申请
    OPTICAL PICK-UP UNIT WITH TWO-MIRROR PHASE SHIFTER 审中-公开
    光学拾取单元,具有两个相位相移

    公开(公告)号:US20090190463A1

    公开(公告)日:2009-07-30

    申请号:US12362219

    申请日:2009-01-29

    IPC分类号: G11B7/00

    摘要: Optical pick-up units (OPU), which require several light sources for reading newer formats, such as Blu-Ray, and legacy formats, such as DVD and CD, require a series of beam splitters/combiners for directing the various source light beams from the light sources along a common path. A two-mirror reflector sub-unit, in which at least one mirror includes a thin film dielectric retarder element, is used to redirect the beams traveling along the common path onto the disc-media, while imposing a 90° retardation onto the polarized light incidence, whereby light returning from the disc-media undergoes a 90° orientation change in the state of polarization from one linear polarization to the other orthogonal linear polarization.

    摘要翻译: 需要用于读取较新格式(例如蓝光)和诸如DVD和CD的传统格式的多个光源的光学拾取单元(OPU)需要一系列分束器/组合器来引导各种源光束 从光源沿着共同的路径。 使用两镜反射器子单元,其中至少一个反射镜包括薄膜介质延迟元件,用于将沿着公共路径行进的光束重定向到盘介质上,同时在偏振光上施加90°延迟 入射,由此从光盘介质返回的光在偏振状态从一个线性偏振到另一个正交线性偏振的90°取向变化。

    Twisted nematic xLCD contrast compensation with tilted-plate retarders
    8.
    发明授权
    Twisted nematic xLCD contrast compensation with tilted-plate retarders 有权
    扭转向列xLCD对比度补偿与斜板延迟器

    公开(公告)号:US08072561B2

    公开(公告)日:2011-12-06

    申请号:US12100024

    申请日:2008-04-09

    IPC分类号: G02F1/1335

    摘要: Contrast compensation for a liquid crystal display projection system including a light source, a first polarizer, a liquid crystal display panel, and a second polarizer is provided using a tilted compensating plate. The compensating plate includes a first birefringent element having an optic axis oriented at a first angle to the plate normal, where the first angle is greater than zero degrees (e.g., an A-plate or O-plate), and a second birefringent element having an optic axis oriented at a second angle to the plate normal, where the second angle is substantially equal to zero degrees (e.g., a C-plate). The compensating plate is tilted relative to a plane of the liquid crystal display panel. The tilted compensating plate has been shown to provide improved contrast compensation for twisted nematic liquid crystal displays.

    摘要翻译: 使用倾斜补偿板提供包括光源,第一偏振器,液晶显示面板和第二偏振器的液晶显示投影系统的对比度补偿。 所述补偿板包括第一双折射元件,所述第一双折射元件具有以与板法线成第一角度定向的光轴,其中所述第一角度大于零度(例如,A板或O板),以及第二双折射元件,其具有 光轴以与板法线成第二角度定向,其中第二角度基本上等于零度(例如,C板)。 补偿板相对于液晶显示面板的平面倾斜。 倾斜补偿板已经显示出对扭转向列液晶显示器提供改进的对比度补偿。

    Near Halfwave Retarder For Contrast Compensation
    9.
    发明申请
    Near Halfwave Retarder For Contrast Compensation 审中-公开
    近半波延迟器对比度补偿

    公开(公告)号:US20090002579A1

    公开(公告)日:2009-01-01

    申请号:US12141861

    申请日:2008-06-18

    申请人: Kim Leong Tan

    发明人: Kim Leong Tan

    IPC分类号: G02F1/1335

    摘要: Contrast compensation for a liquid crystal display projection system is provided with a trim retarder that includes a single-layer retarder element that has an in-plane retardance that is shifted from a zero-order half-wave at a predetermined wavelength by a predetermined amount. This near half-wave plate provides similar contrast compensation and azimuthal angle sensitivity to conventional relatively low-magnitude trim retarders, yet is readily fabricated with inorganic birefringent crystals with a manageable thickness tolerance.

    摘要翻译: 对于液晶显示投影系统的对比度补偿设置有包括单层延迟元件的修整延迟器,该单层延迟元件具有从预定量的预定波长的零级半波偏移预定量的面内延迟。 该近半波片对常规的相对较低幅度的减速器提供了类似的对比度补偿和方位角灵敏度,但是容易地用可控制的厚度公差的无机双折射晶体制造。

    Single-Layer Birefringent Crystal Trim Retarders
    10.
    发明申请
    Single-Layer Birefringent Crystal Trim Retarders 有权
    单层双折射晶体减震器

    公开(公告)号:US20080192184A1

    公开(公告)日:2008-08-14

    申请号:US12028390

    申请日:2008-02-08

    IPC分类号: G02F1/1335 G02B5/30

    摘要: A single-layer birefringent crystal trim retarder includes a birefringent crystal cut such that its optic axis is at a high oblique angle and such that it provides low in-plane retardance values even when the birefringent crystal is relatively thick. To compensate for the inherent high +C-plate retardance of this high-tilt O-plate, the single-layer birefringent crystal is coupled with a −C-plate thin-film retarder to provide a trim retarder having an overall A/−C-plate retarder functionality. This full-function trim retarder is practical to fabricate, is thickness and azimuthal angle tolerant, and is suitable for low sensitivity angular clocking requirements of LCoS panel compensation.

    摘要翻译: 单层双折射晶体微调延迟器包括双折射晶体切割,使得其光轴处于高倾斜角度,并且即使当双折射晶体相对较厚时也提供低的面内延迟值。 为了补偿该高倾斜O板的固有的高+ C板延迟,单层双折射晶体与-C板薄膜延迟器耦合以提供具有整体A / C 板式延迟器功能。 该全功能微调缓速器可实现制造,厚度和方位角的宽容度,适用于LCoS面板补偿的低灵敏度角时钟要求。