公开(公告)号：US07999895B2

公开(公告)日：2011-08-16

申请号：US12497246

申请日：2009-07-02

申请人： Kim Leong Tan ,  Nada A. O'Brien

发明人： Kim Leong Tan ,  Nada A. O'Brien

IPC分类号： G02F1/13363

CPC分类号： G02F1/133632 ,  G02F1/136277 ,  G02F2001/133638

摘要： A contrast compensator for improving the panel contrast of liquid crystal (LC) microdisplays having a high-order waveplate configured as an O-plate and supporting a thin film transistor layer is provided. The contrast compensator includes a counter high-order waveplate configured as an O-plate, which has a birefringence opposite in sign to a birefringence of the thin film transistor substrate.

摘要翻译： 提供了一种用于改善具有配置为O板的高阶波片并支撑薄膜晶体管层的液晶（LC）微显示器的面板对比度的对比度补偿器。 对比度补偿器包括配置为O板的计数器高阶波片，其具有与薄膜晶体管基板的双折射相符的双折射。

公开(公告)号：US20090190463A1

公开(公告)日：2009-07-30

申请号：US12362219

申请日：2009-01-29

申请人： Kim Leong Tan ,  Curtis R. Hruska ,  Karen Denise Hendrix

发明人： Kim Leong Tan ,  Curtis R. Hruska ,  Karen Denise Hendrix

IPC分类号： G11B7/00

CPC分类号： G11B7/1362 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1365 ,  G11B2007/0006

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。

公开(公告)号：US20090009668A1

公开(公告)日：2009-01-08

申请号：US12166988

申请日：2008-07-02

申请人： Kim Leong Tan ,  David M. Shemo

发明人： Kim Leong Tan ,  David M. Shemo

IPC分类号： G02F1/13 ,  G03H1/02

CPC分类号： G02B5/3016 ,  G02B5/1871 ,  G02B5/32 ,  G02F1/13342 ,  G02F1/133753 ,  G02F2203/07 ,  G03H2240/11 ,  G03H2240/23 ,  G03H2250/38 ,  G11B7/1353 ,  G11B7/13925 ,  G11B2007/0006

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。

公开(公告)号：US06975786B1

公开(公告)日：2005-12-13

申请号：US10110031

申请日：2000-10-04

申请人： Steven Warr ,  Kim Leong Tan ,  William Crossland ,  Ilias Manolis ,  Maura Redmond ,  Timothy Wilkinson ,  Melanie Holmes ,  Brian Robertson

发明人： Steven Warr ,  Kim Leong Tan ,  William Crossland ,  Ilias Manolis ,  Maura Redmond ,  Timothy Wilkinson ,  Melanie Holmes ,  Brian Robertson

IPC分类号： G02F1/13 ,  G02B5/32 ,  G02B6/26 ,  G02B6/32 ,  G02B6/35 ,  G02F1/13363 ,  G02F1/139 ,  G02F1/141 ,  G02F1/31 ,  G03H1/08 ,  G02B27/46

CPC分类号： G03H1/08 ,  G02B5/32 ,  G02B6/264 ,  G02B6/32 ,  G02F1/136277 ,  G02F1/1393 ,  G02F1/1395 ,  G02F1/141 ,  G02F1/31 ,  G02F2001/133638 ,  G02F2203/02 ,  G02F2203/12 ,  G02F2203/50 ,  G03H1/0005 ,  G03H1/02 ,  G03H1/2294 ,  G03H2001/0224 ,  G03H2001/0825 ,  G03H2001/085 ,  G03H2001/221 ,  G03H2001/261 ,  G03H2001/306 ,  G03H2210/20 ,  G03H2222/31 ,  G03H2222/32 ,  G03H2222/34 ,  G03H2223/19 ,  G03H2223/20 ,  G03H2225/22 ,  G03H2225/32 ,  G03H2225/52 ,  G03H2227/03 ,  G03H2240/41 ,  H04Q2213/1301 ,  H04Q2213/1319

摘要： An optical switch uses two ferroelectric liquid crystal spatial light modulators (10, 11) with an interconnect region in between. The switch uses bulk lenses (2, 8) to focus light from an input fibre array (1) to a first spatial light modulator (10), and from the second spatial light modulator (11) to an output array (9). Each spatial light modulator displays a respective hologram selected from a previously calculated set, to cause a desired switching of light from the input fibre array to the output array.

摘要翻译： 光开关使用两个铁电液晶空间光调制器（10,11）之间的互连区域。 开关使用体积透镜（2,8）将来自输入光纤阵列（1）的光聚焦到第一空间光调制器（10），并从第二空间光调制器（11）到输出阵列（9）。 每个空间光调制器显示从先前计算的集合中选择的相应的全息图，以使得从输入光纤阵列到输出阵列的光的所需切换。

公开(公告)号：US08072561B2

公开(公告)日：2011-12-06

申请号：US12100024

申请日：2008-04-09

申请人： Kim Leong Tan ,  Karen Denise Hendrix

发明人： Kim Leong Tan ,  Karen Denise Hendrix

IPC分类号： G02F1/1335

CPC分类号： G02F1/133634 ,  G02F1/136277 ,  G02F2413/10 ,  H04N9/3105

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。

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

CPC分类号： G02F1/13363 ,  G02F1/136277 ,  G02F2202/40 ,  G02F2203/02 ,  G02F2413/03 ,  G02F2413/07

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。

公开(公告)号：US20080192184A1

公开(公告)日：2008-08-14

申请号：US12028390

申请日：2008-02-08

申请人： Kim Leong Tan ,  Karen Denise Hendrix

发明人： Kim Leong Tan ,  Karen Denise Hendrix

IPC分类号： G02F1/1335 ,  G02B5/30

CPC分类号： G02F1/133632 ,  G02F1/136277 ,  H04N9/3167

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。

公开(公告)号：US08643822B2

公开(公告)日：2014-02-04

申请号：US12852105

申请日：2010-08-06

申请人： Kim Leong Tan ,  David M. Shemo

发明人： Kim Leong Tan ,  David M. Shemo

IPC分类号： G02F1/13 ,  G02F1/1337

CPC分类号： G02B5/3016 ,  B29D11/0074 ,  G02B5/1871 ,  G02B5/32 ,  G02F1/13342 ,  G02F1/133753 ,  G02F2203/07 ,  G03H1/22 ,  G03H2001/2276 ,  G03H2240/11 ,  G03H2240/23 ,  G03H2250/38 ,  G11B7/1353 ,  G11B7/13925 ,  G11B2007/0006

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。

公开(公告)号：US20130063701A1

公开(公告)日：2013-03-14

申请号：US13697438

申请日：2011-05-09

申请人： Andrew J. Ouderkirk ,  Zhisheng Yun ,  Xiaohui Cheng ,  Kim Leong Tan

发明人： Andrew J. Ouderkirk ,  Zhisheng Yun ,  Xiaohui Cheng ,  Kim Leong Tan

IPC分类号： G02B27/28 ,  G03B21/14 ,  F21V9/14

CPC分类号： G03B21/2033 ,  G03B21/2073 ,  G03B21/208 ,  G03B33/06 ,  H04N9/3167

摘要： The present disclosure relates generally to an optical element, a light projector that includes the optical element, and an image projector that includes the optical element. In particular, the optical element provides an improved uniformity of light by homogenizing the light with lenslet arrays, such as “fly-eye arrays” (FEA). A first FEA is positioned to intercept and converge an unpolarized combined light before the light is converted to a single polarization state, and a second FEA is positioned to intercept and diverge the converted light having a single polarization state.

摘要翻译： 本公开一般涉及一种光学元件，包括该光学元件的光投影仪和包括该光学元件的图像投影仪。 特别地，光学元件通过用诸如飞眼阵列（FEA）的小透镜阵列使光均匀化来提供改善的光均匀性。 第一FEA被定位成在光被转换成单个偏振状态之前拦截和会聚非偏振组合光，并且第二FEA被定位成拦截和发散具有单一偏振状态的转换光。

公开(公告)号：US08237876B2

公开(公告)日：2012-08-07

申请号：US11419872

申请日：2006-05-23

申请人： Kim Leong Tan ,  Brett J. Bryars ,  Karen Denise Hendrix ,  David M. Shemo ,  Thomas Mayer

发明人： Kim Leong Tan ,  Brett J. Bryars ,  Karen Denise Hendrix ,  David M. Shemo ,  Thomas Mayer

IPC分类号： G02F1/1335

CPC分类号： H04N9/3167 ,  G02B5/3083 ,  G02F1/133632 ,  G02F1/133634 ,  G02F1/136277 ,  G02F1/1393 ,  G02F2203/02 ,  H04N9/3105

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。