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1. 发明授权

US5781268A Polarization-insensitive fabry-perot tunable filter 失效
标题翻译：极化不敏感的fabry-perot可调滤波器
公开(公告)号：US5781268A
公开(公告)日：1998-07-14
申请号：US629976
申请日：1996-04-09
申请人： Jian-Yu Liu , Charles S. Wong , Kristina M. Johnson , Gary D. Sharp
发明人： Jian-Yu Liu , Charles S. Wong , Kristina M. Johnson , Gary D. Sharp
IPC分类号： G02F1/13363 , G02F1/21 , G02F1/1335 , G02F1/139
CPC分类号： G02F1/216 , G02F2001/133638 , G02F2203/06
摘要： This invention provides polarization-independent optical filters that are Fabry-Perot filters. The inventive filters incorporate a phase modulator within the FP cavity and two quarter-wave plates, one on either side of the phase modulator, in the cavity. The quarter-wave plates are perpendicular to each other and oriented at .+-.45.degree. with respect to the optic axis of the phase modulator. A variety of phase modulators including those that incorporate nematic and smectic liquid crystal optical modulators can be employed in these FP filters. The filters of this invention are particularly useful in fiber optic systems and in telecommunications applications at 1550 nm.
摘要翻译：本发明提供了法布里 - 珀罗滤波器的偏振非依赖光滤波器。本发明的滤光器在FP空腔内并入相位调制器，在空腔中包括两个1/4波片，一个位于相位调制器的两侧。四分之一波片彼此垂直并相对于相位调制器的光轴定向在+/- 45°。包括向列型和近晶型液晶光调制器的各种相位调制器可用于这些FP滤波器。本发明的滤波器在1550nm的光纤系统和电信应用中特别有用。

2. 发明授权

US5493426A Lateral electrode smectic liquid crystal devices 失效
标题翻译：侧面电极近晶体液晶装置
公开(公告)号：US5493426A
公开(公告)日：1996-02-20
申请号：US056415
申请日：1993-05-03
申请人： Kristina M. Johnson , Anat Sneh , Jian-Yu Liu , Gary D. Sharp
发明人： Kristina M. Johnson , Anat Sneh , Jian-Yu Liu , Gary D. Sharp
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/13363 , G02F1/1337 , G02F1/1343 , G02F1/1347 , G02F1/135 , G02F1/137 , G02F1/139 , G02F1/141 , G02F1/21 , G02F1/133
CPC分类号： G02F1/1418 , G02F1/13471 , G02F1/135 , G02F1/141 , G02F1/216 , G02F1/134309 , G02F1/134363 , G02F1/13439 , G02F2001/133638 , G02F2001/133738 , G02F2001/133742 , G02F2203/05 , G02F2203/055 , G02F2203/06 , G02F2203/50
摘要： This invention provides smectic liquid crystal cells with lateral electrodes. The effective change in refractive index with field-induced tilting of the liquid crystal molecules is increased by providing an angle between the direction of propagation of light and the direction of the molecular directors at zero applied field. For homeotropically aligned liquid crystals this is accomplished by inclining the incident light beam at an oblique angle to the device surface. For tilted layer cells the liquid crystal layers are tilted and the light can impinge at normal incidence. This invention further provides Fabry-Perot filters utilizing lateral electrode liquid crystal cells.
摘要翻译：本发明提供具有横向电极的近晶液晶单元。通过在零施加场处提供光的传播方向和分子导向器的方向之间的角度来增加液晶分子的场致倾斜的折射率的有效变化。对于垂直取向的液晶，这是通过使入射光束以与设备表面成倾斜角倾斜来实现的。对于倾斜层细胞，液晶层倾斜，并且光可以以正常入射的方式入射。本发明还提供了利用横向电极液晶单元的法布里 - 珀罗滤波器。

3. 发明授权

US5361320A Liquid crystal fiber waveguide 失效
标题翻译：液晶光纤波导
公开(公告)号：US5361320A
公开(公告)日：1994-11-01
申请号：US19856
申请日：1993-02-19
申请人： Jian-Yu Liu , Kristina M. Johnson
发明人： Jian-Yu Liu , Kristina M. Johnson
IPC分类号： G02B6/032 , G02F1/1333 , G02F1/383 , G02B6/00
CPC分类号： G02B6/032 , G02F1/1326 , G02F1/383
摘要： This invention provides a fiber waveguide with a liquid crystal core. The liquid crystals are aligned in layers with molecular directors approximately parallel to each other. An electric field can be applied to the liquid crystal core to provide linear and nonlinear optical modulation. Alone or in combination with polarizers, reflectors, and birefringent elements, the waveguide of this invention provides phase, polarization and intensity modulation, spectral filtering, and second harmonic generation.
摘要翻译：本发明提供一种具有液晶芯的光纤波导。液晶以分子导向器大致彼此平行的方式排列。可以将电场施加到液晶芯以提供线性和非线性光学调制。本发明的波导单独或与偏振器，反射器和双折射元件组合，提供了相位，极化和强度调制，光谱滤波和二次谐波生成。

4. 发明授权

US5510914A Smectic liquid crystal analog phase modulator 失效
标题翻译：近晶液晶模拟相位调制器
公开(公告)号：US5510914A
公开(公告)日：1996-04-23
申请号：US153079
申请日：1993-11-15
申请人： Jian-Yu Liu , Kristina M. Johnson
发明人： Jian-Yu Liu , Kristina M. Johnson
IPC分类号： G02F1/141 , G02F1/1343 , G02F1/01 , G02F1/03 , G02F1/13
CPC分类号： G02F1/141
摘要： This invention provides analog phase modulators comprising smetic liquid crystal cells wherein the layers are specifically not aligned perpendicular to the cell walls. The layers are either tilted with respect to the substrate or are in a chevron structure. Application of an analog electric field perpendicular to the cell walls bends the molecules in an analog fashion in a plane not parallel to the cell walls and thereby provides analog phase modulation of incident light. Analog phase modulation can not be directly provided by the surface-stabilized smectic liquid crystal cells known in the art, nor can analog tilting of SmC* liquid crystals be achieved. This invention further provides Fabry-Perot devices containing these analog phase modulators within the resonance cavity. The filter of this invention is optimally suited for wavelength-division multiplexing in photonic networks. It has high throughput, large tuning range, high resolution, and high modulation speed. The filter requires only small applied electric fields and has a very simple and inexpensive processing procedure.
摘要翻译：本发明提供了模拟相位调制器，其包括精细液晶单元，其中这些层特别地不垂直于单元壁排列。这些层相对于基底倾斜或者是人字形结构。垂直于细胞壁的模拟电场的应用以模拟方式将分子弯曲成不平行于细胞壁的平面，从而提供入射光的模拟相位调制。模拟相位调制不能由本领域已知的表面稳定的近晶液晶单元直接提供，也不能实现SmC *液晶的模拟倾斜。本发明进一步提供了在谐振腔内含有这些模拟相位调制器的法布里 - 珀罗器件。本发明的滤波器最适合于光子网络中的波分复用。它具有高吞吐量，大调谐范围，高分辨率和高调制速度。该过滤器只需要小的施加电场，并且具有非常简单和便宜的处理过程。

5. 发明授权

US5377026A Modulator using the linear electro-optic effect of liquid crystals 失效
标题翻译：调制器采用液晶线性电光效应
公开(公告)号：US5377026A
公开(公告)日：1994-12-27
申请号：US938997
申请日：1992-09-02
申请人： Jian-Yu Liu , Kristina M. Johnson , Michael G. Robinson
发明人： Jian-Yu Liu , Kristina M. Johnson , Michael G. Robinson
IPC分类号： G02F1/1333 , G02F1/139 , G02F1/19 , G02F1/1335 , G02F1/13 , G02F1/1343 , G02F1/137
CPC分类号： G02F1/1326 , G02F1/139 , G02F1/195 , G02F2203/055
摘要： This invention provides an electro-optic modulator which, in some embodiments, utilizes the linear electro-optic effect in liquid crystal materials. The liquid crystal modulator of this invention comprises a chiral smectic liquid crystal cell with electrodes to supply an electric field in a direction with a nonzero linear electro-optic coefficient, and means to suppress change in the tilt angle and azimuthal angle of the liquid crystal molecular directors. The response time of the linear electro-optic effect modulators of this invention is in the nanosecond range or faster. This modulator can be employed in Fabry-Perot or waveguide devices to provide increased modulation via multiple passes. This invention further provides for prism-coupling of light into or out of the waveguide structure whereby the modulator provides amplitude modulation, tunable filtering, or both. The prism-coupled waveguide filter is further provided for any electro-optic material, not limited to liquid crystals, and any electro-optic modulation mechanism, not limited to the linear electro-optic effect.
摘要翻译：本发明提供了一种在一些实施例中利用液晶材料中的线性电光效应的电光调制器。本发明的液晶调制器包括具有电极以非零线性电光系数的方向提供电场的手性近晶液晶单元，以及抑制液晶分子的倾斜角和方位角变化的装置董事。本发明的线性电光效应调节剂的响应时间在纳秒范围内或更快。该调制器可用于法布里 - 珀罗或波导器件，以通过多次通过提供增加的调制。本发明进一步提供了将光耦合到波导结构中或从波导结构中耦合，由此调制器提供幅度调制，可调谐滤波或两者。棱镜耦合波导滤波器进一步提供用于不限于液晶的任何电光材料，以及不限于线性电光效应的任何电光调制机构。

6. 发明授权

US06707516B1 Single-panel field-sequential color display systems 失效
标题翻译：单面彩色显示系统
公开(公告)号：US06707516B1
公开(公告)日：2004-03-16
申请号：US09165127
申请日：1998-10-02
申请人： Kristina M. Johnson , Gary D. Sharp
发明人： Kristina M. Johnson , Gary D. Sharp
IPC分类号： G02F11335
CPC分类号： H04N9/3126 , G02B27/288 , G02F1/0136 , G02F1/0322 , G02F1/09 , G02F1/133533 , G02F1/133536 , G02F1/13363 , G02F1/13473 , G02F1/23 , G02F2001/133543 , G02F2001/133638 , G02F2413/04 , H04N5/66 , H04N5/7441 , H04N9/3111 , H04N9/3167
摘要： The present invention provides a single-panel field-sequential full color display systems that are less complex, smaller in size and less costly than prior additive split-path color systems, while exhibiting higher light output, greater flexibility and greater reliability than prior single-panel field-sequential systems. In the first preferred embodiment, the display system includes a “frame buffer” style spatial light modulator, in which a frame buffer pixel circuit is integrated into the spatial light modulator. The display system of the present invention also preferably includes on opto-electronic color sequencer which allows for the electronic control of the transmission of additive primary colors.
摘要翻译：本发明提供了一种比现有的添加剂分路通道彩色系统更复杂，尺寸更小，成本更低的单面现场全彩色显示系统，同时具有比现有单路彩色显示器更高的光输出，更大的灵活性和更高的可靠性，面板现场顺序系统。在第一优选实施例中，显示系统包括“帧缓冲”型空间光调制器，其中帧缓冲器像素电路被集成到空间光调制器中。本发明的显示系统还优选地包括在允许电子控制添加剂原色的透射的光电色谱仪上。

7. 发明授权

US6141069A Liquid crystal phase modulator using a ferroelectric liquid crystal with a rotatable axis and cholesteric circular polarizers 失效
标题翻译：使用具有可旋转轴的铁电液晶和胆甾型圆偏振器的液晶相位调制器
公开(公告)号：US6141069A
公开(公告)日：2000-10-31
申请号：US851521
申请日：1997-05-05
申请人： Gary D. Sharp , Kristina M. Johnson , Jay E. Stockley
发明人： Gary D. Sharp , Kristina M. Johnson , Jay E. Stockley
IPC分类号： G02B5/30 , G02F1/1347 , G02F1/139 , G02F1/141 , G02F1/1335
CPC分类号： G02F1/1418 , G02B5/3016 , G02F1/13473 , G02F1/141 , G02F2201/343
摘要： This invention provides a phase modulator comprising an electro-optically rotatable smectic liquid crystal half-wave retarder in combination with a cholesteric liquid crystal circular polarizer. Rotation of the half-wave retarder varies the phase delay of the modulator. A polarizing interferometer is provided utilizing the phase modulator of this invention in combination with a second cholesteric circular polarizer and a linear polarizer. A tunable Fabry-Perot resonator which does not require ordinary mirrors is provided utilizing the phase modulator of this invention in combination with a second cholesteric circular polarizer.
摘要翻译：本发明提供了一种相位调制器，其包括与胆甾型液晶圆偏振器组合的电光可旋转的近晶液晶半波延迟器。半波延迟器的旋转会改变调制器的相位延迟。使用本发明的相位调制器与第二胆甾型圆偏振器和线性偏振器组合来提供偏振干涉仪。利用本发明的相位调制器与第二胆甾型圆偏振器组合，提供了不需要普通反射镜的可调法布里 - 珀罗谐振器。

8. 发明授权

US5132826A Ferroelectric liquid crystal tunable filters and color generation 失效
标题翻译：铁电液晶可调滤波器和色彩生成
公开(公告)号：US5132826A
公开(公告)日：1992-07-21
申请号：US522215
申请日：1990-05-11
申请人： Kristina M. Johnson , Gary D. Sharp
发明人： Kristina M. Johnson , Gary D. Sharp
IPC分类号： G02F1/1347 , G02F1/141
CPC分类号： G02F1/141 , G02F1/13473 , G02F2203/055
摘要： Discretely and continuously tunable filers emplying FLC cells are provided. Exemplary discretely tunable filters employ bistable smectic C* FLC cells. Exemplary continuously tunable filters employ smectic A* FLC cells. Single or multiple stage filters are provided. Blocking filters useful for color generation are also provided. The FLC filters provided can be temporally multiplexed.
摘要翻译：提供了应用FLC细胞的离散和连续的可调文件。示例性离散可调滤波器采用双稳态近晶C * FLC电池。示例性的连续可调滤波器使用近晶A * FLC细胞。提供单级或多级过滤器。还提供了用于颜色生成的阻塞滤波器。提供的FLC滤波器可以进行时间复用。

9. 发明授权

US06899430B2 Color imaging systems and methods 失效
标题翻译：彩色成像系统和方法
公开(公告)号：US06899430B2
公开(公告)日：2005-05-31
申请号：US09736135
申请日：2000-12-15
申请人： Kristina M. Johnson , Gary D. Sharp
发明人： Kristina M. Johnson , Gary D. Sharp
IPC分类号： G02B5/04 , G02B5/30 , G02B27/28 , G02F1/01 , G02F1/13 , G02F1/1335 , G03B21/00 , G03B21/14 , G03B33/12 , H04N9/31
CPC分类号： H04N9/3105 , G02B27/283 , G03B21/2073 , G03B33/12 , H04N9/3167
摘要： A system for separating light into different spectrums and for recombining the light includes at least one polarizing beamsplitter and at least one retarder stack configured to condition the polarization of input light differently for different spectrums. A device embodying the invention could utilize multiple polarizing beamsplitters and multiple retarder stacks. Alternatively, a system could utilize a single polarizing beamsplitter and a single retarder stack in combination with one or more dichroic beamsplitters. In preferred embodiments, one or more reflective modulator panels are included to separately modulate each separated spectrum of light. Such an embodiment can be used for a color projection system. In each of the embodiments that utilize modulators, distances between the modulators and the focusing optics is essentially the same.
摘要翻译：用于将光分离成不同光谱并用于重新组合光的系统包括至少一个偏振分束器和至少一个延迟器堆叠，其被配置成不同于不同光谱来调节输入光的偏振。体现本发明的装置可以利用多个偏振分束器和多个延迟器堆叠。或者，系统可以使用单个偏振分束器和单个延迟器堆叠与一个或多个二向色束分离器组合。在优选实施例中，包括一个或多个反射调制器面板以分别调制每个分开的光谱。这样的实施例可以用于彩色投影系统。在利用调制器的每个实施例中，调制器和聚焦光学器件之间的距离基本相同。

10. 发明授权

US06273571B1 Display architectures using an electronically controlled optical retarder stack 有权
标题翻译：使用电子控制的光学延迟器堆叠的显示架构
公开(公告)号：US06273571B1
公开(公告)日：2001-08-14
申请号：US09410098
申请日：1999-10-01
申请人： Gary D. Sharp , Kristina M. Johnson
发明人： Gary D. Sharp , Kristina M. Johnson
IPC分类号： G03B2114
CPC分类号： G02F1/1336 , G02B5/3083 , G02B27/288 , G02F1/0136 , G02F1/0322 , G02F1/09 , G02F1/133533 , G02F1/133536 , G02F1/13362 , G02F1/13363 , G02F1/13473 , G02F1/23 , G02F2001/133543 , G02F2001/133638 , G02F2413/04 , G02F2413/08 , H04N5/66 , H04N5/7441 , H04N9/3167
摘要： A system architecture for a display system with electronically controlled optical retarder stacks. The system uses only one spatial light modulator and a color filter to determine what the color of the image created by the modulator will be when projected onto a display surface. In one embodiment, the color filter passes one of red, green or blue light at any give time. The color filter can be placed between the light source and the modulator optics, between the modulator optics and the modulator, between the modulator and the projection optics, or made part of the projection optics itself. The retarder stack for transforming at least partially polarized input light can include a first retarder and a second retarder. The first retarder has a first retardance and a first orientation and the second retarder has a second retardance and a second orientation, both orientations with respect to the partially polarized light. The first retardance, first orientation, second retardance, and second orientation can be arranged to yield the desired polarization transformed light which includes a first spectrum and a second spectrum. The polarization of the first spectrum and the polarization of the second spectrum can be made orthogonal to each other. The polarizations can be linear or elliptical. If the polarization transformed light is linear, the directions of polarizations are different and in one case can be made perpendicular. If the polarization of the polarization transformed light is elliptical, then the polarizations are different and in on case can be made orthogonal in the general sense of orthogonality of polarization states.
摘要翻译：一种具有电子控制光学延迟器堆叠的显示系统的系统架构。该系统仅使用一个空间光调制器和滤色器来确定当投影到显示器表面上时由调制器创建的图像的颜色将是什么。在一个实施例中，滤色器在任何给定时间通过红色，绿色或蓝色光中的一种。滤色器可以放置在光源和调制器光学器件之间，调制器光学器件和调制器之间，调制器和投影光学器件之间，或者被制成投影光学器件本身的一部分。用于变换至少部分偏振的输入光的延迟器叠层可以包括第一延迟器和第二延迟器。第一延迟器具有第一延迟和第一取向，并且第二延迟器具有相对于部分偏振光的两个取向的第二延迟和第二取向。第一延迟，第一取向，第二延迟和第二取向可以被布置成产生包括第一光谱和第二光谱的期望的偏振变换光。可以使第一光谱的极化和第二光谱的极化彼此正交。极化可以是线性或椭圆形。如果偏振变换的光线是线性的，则极化方向是不同的，在一种情况下可以是垂直的。如果偏振变换光的极化是椭圆形的，那么极化是不同的，并且在极化状态的正交性的一般意义上可以使其正交。

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