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1. 发明申请

WO2008019227A3 SELF-COMPENSATING, QUASI-HOMEOTROPIC LIQUID CRYSTAL DEVICE 审中-公开
公开(公告)号：WO2008019227A3
公开(公告)日：2008-02-14
申请号：PCT/US2007/074492
申请日：2007-07-26
申请人： CUSPATE, LLC , SCHEFFER, Terry J. , XUE, Jiuzhi
发明人： SCHEFFER, Terry J. , XUE, Jiuzhi
IPC分类号： G02F1/13 , G02F1/1337 , G02F1/139 , C09K19/02
摘要： Self-compensating, quasi-homeotropic liquid crystal devices (100, 200, 300, 400) overcome the contrast reducing effects of smaller pretilt angles. The devices exhibit extremely high contrast ratio but at the same time suppress fringe field-induced disclination lines in high pixel density and small pixel size quasi-homeotropic displays. The surface pretilt (520, 540) and cell twist (570) angles are set at values that, in combination, contribute to establishing a cuspate singularity in the contrast ratio for normally incident light in response to a drive signal switching the liquid crystal device to the OFF director field state that provides nearly 0% optical efficiency. The OFF director field state corresponds to a subthreshold drive level that provides for the liquid crystal device self-compensation for in plane optical retardation. Setting the cell gap ("d") to provide substantially 100% optical efficiency in response to a value of the drive signal switching the liquid crystal device to the ON director field state achieves optimal dynamic range for the liquid crystal device.

2. 发明申请

WO2008019227A2 SELF-COMPENSATING, QUASI-HOMEOTROPIC LIQUID CRYSTAL DEVICE 审中-公开
标题翻译：自补偿，准单色液晶装置
公开(公告)号：WO2008019227A2
公开(公告)日：2008-02-14
申请号：PCT/US2007074492
申请日：2007-07-26
申请人： CUSPATE LLC , SCHEFFER TERRY J , XUE JIUZHI
发明人： SCHEFFER TERRY J , XUE JIUZHI
IPC分类号： G02F1/1337
CPC分类号： G02F1/133753 , G02F2001/133761 , G02F2001/134372 , G02F2001/1398
摘要： Self-compensating, quasi-homeotropic liquid crystal devices (100, 200, 300, 400) overcome the contrast reducing effects of smaller pretilt angles. The devices exhibit extremely high contrast ratio but at the same time suppress fringe field-induced disclination lines in high pixel density and small pixel size quasi-homeotropic displays. The surface pretilt (520, 540) and cell twist (570) angles are set at values that, in combination, contribute to establishing a cuspate singularity in the contrast ratio for normally incident light in response to a drive signal switching the liquid crystal device to the OFF director field state that provides nearly 0% optical efficiency. The OFF director field state corresponds to a subthreshold drive level that provides for the liquid crystal device self-compensation for in plane optical retardation. Setting the cell gap ("d") to provide substantially 100% optical efficiency in response to a value of the drive signal switching the liquid crystal device to the ON director field state achieves optimal dynamic range for the liquid crystal device.
摘要翻译：自补偿准垂直液晶设备（100,200,300,400）克服了较小预倾角的对比度降低效应。该器件表现出极高的对比度，但同时在高像素密度和小像素尺寸准垂直显示器中抑制边缘场感应向错线。表面预倾角（520,540）和单元扭转（570）角度被设定为这样的值，其组合地有助于响应于驱动信号将液晶装置切换到正常入射光而在对比率中建立尖点奇点 OFF导向器的现场状态，提供接近0％的光学效率。 OFF指示器场状态对应于为平面内光学延迟提供液晶器件自补偿的亚阈值驱动电平。响应于将液晶装置切换到ON指示器场状态的驱动信号的值，设置单元间隙（“d”）以提供基本上100％的光学效率实现了液晶装置的最佳动态范围。

3. 发明申请

WO2013126454A1 OPTICAL POLARIZATION STATE MODULATOR ASSEMBLY FOR USE IN STEREOSCOPIC THREE-DIMENSIONAL IMAGE PROJECTION SYSTEM 审中-公开
标题翻译：光学极化状态调制器组件用于立体三维图像投影系统
公开(公告)号：WO2013126454A1
公开(公告)日：2013-08-29
申请号：PCT/US2013/026948
申请日：2013-02-20
申请人： LC-TEC DISPLAYS AB , OSTERMAN, Jesper , SCHEFFER, Terry J.
发明人： OSTERMAN, Jesper , SCHEFFER, Terry J.
IPC分类号： G02B27/26 , H04N13/00
CPC分类号： G02B27/26 , G03B35/16 , H04N9/3167 , H04N13/324 , H04N13/337 , H04N13/341 , H04N13/363
摘要： An optical polarization state modulator assembly (400) for use in a stereoscopic three-dimensional image projection system includes a spatial light modulator (412), a light source (22) emitting multiple wavelength components of light for incidence on the spatial light modulator, and a projection lens (414). A polarization converter system (420) cooperates with the spatial light modulator to produce in alternating sequence polarized light carrying first and second perspective view images of a scene in different ones of first and second subframes. A polarization modulator (20), in response to first and second drive signals, imparts to, respectively, the image-carrying polarized light a first output polarization state during the first subframe and to the image-carrying polarized light a second output polarization state during the second subframe. The image-carrying polarized light in the first and second output polarization states propagates through the projection lens for transmission to an observer.
摘要翻译：一种用于立体三维图像投影系统的光偏振状态调制器组件（400）包括空间光调制器（412），发射多个用于入射到空间光调制器上的波长成分的光源（22），以及投影透镜（414）。偏振转换器系统（420）与空间光调制器协作以交替顺序产生携带第一和第二子帧中不同的场景的第一和第二透视图图像的偏振光。响应于第一和第二驱动信号的偏振调制器（20）分别赋予图像携带偏振光在第一子帧期间的第一输出偏振状态和在图像携带偏振光期间的第二输出偏振状态第二个子帧。第一和第二输出偏振状态下的图像携带偏振光通过投影透镜传播，以传输给观察者。

4. 发明申请

WO2012024174A1 HIGH-SPEED LIQUID CRYSTAL POLARIZATION MODULATOR 审中-公开
标题翻译：高速液晶极化调制器
公开(公告)号：WO2012024174A1
公开(公告)日：2012-02-23
申请号：PCT/US2011/047531
申请日：2011-08-12
申请人： LC-TEC DISPLAYS AB , OSTERMAN, Jesper , SCHEFFER, Terry, J.
发明人： OSTERMAN, Jesper , SCHEFFER, Terry, J.
IPC分类号： G02F1/1347
CPC分类号： G02B27/26 , G02F1/13363 , G02F1/13471 , G02F2001/133637 , G02F2001/133638 , G02F2203/07 , H04N13/341 , H04N13/398
摘要： A polarization modulator (20) for time-multiplexed stereoscopic 3D applications rapidly switches between two polarization states in alternate subframes. The polarization modulator uses two liquid crystal devices (26, 28) arranged in optical series and driven (52) such that the second device compensates a change the first device makes to an input polarization state of incident light during alternate subframes. The compensating liquid crystal devices are characterized in that, if the same voltage is applied to both of them, the second device compensates the change that the first device makes to the input polarization state, regardless of the applied voltage level. If the applied voltage is changed from one level to another and the liquid crystal material (34 c , 34 n ) in the liquid crystal devices relaxes to the new voltage level, polarization state compensation will take place throughout the duration of the relaxation so that the slow, unpowered transition does not manifest itself as a change in polarization state.
摘要翻译：用于时分复用立体3D应用的偏振调制器（20）在备用子帧中快速切换两个极化状态。偏振调制器使用以光学系列和驱动（52）布置的两个液晶装置（26,28），使得第二装置在替代子帧期间补偿第一装置对入射光的输入偏振状态的改变。补偿液晶装置的特征在于，如果对它们两者施加相同的电压，则与施加的电压电平无关地，第二装置补偿第一装置对输入偏振状态的变化。如果施加的电压从一个电平变化到另一个电平并且液晶装置中的液晶材料（34c，34n）松弛到新的电压电平，则在整个放宽期间将发生极化状态补偿，无功率转换并不表现为偏振状态的变化。

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