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    • 93. 发明授权
    • Polarization sensitive light homogenizer
    • 极化敏感光均化器
    • US07784954B1
    • 2010-08-31
    • US11828172
    • 2007-07-25
    • Zane Coleman
    • Zane Coleman
    • F21V9/14
    • G02B5/021G02B5/0242G02B5/0278G02B5/045G02B5/3083G02F1/133606G02F1/133611G02F2203/07
    • The present invention provides a polarization-sensitive light homogenizer and a backlight and display using the same. The homogenizer improves the spatial luminance and color uniformity, increases the luminance in a direction normal to the homogenizer and provides increased luminance through polarized light recycling within the light homogenizer and backlight. In one embodiment, the homogenizer includes a polarization-sensitive anisotropic light-scattering (PDALS) region, a non-polarization-sensitive anisotropic light-scattering region, and a substantially non-scattering region. In a further embodiment, the non-scattering region is birefringent. The spatially non-uniform incident light flux from a backlight including one or more non-extended light emitting sources is scattered efficiently by the NPDASL region and is incident on the PDALS region which backscatters light orthogonal to the polarization state desired for efficient illumination of a liquid crystal display panel. The NPDASL and the PDALS form a multiple reflection cavity that will increase the spatial luminance while improving the light recycling of the appropriate polarization state. In a further embodiment the light homogenizer includes at least one of a light collimating region and a light re-directing region.
    • 本发明提供一种偏振光感光光均化器和使用其的背光和显示器。 均化器改善了空间亮度和颜色均匀性,增加了垂直于均质器的方向上的亮度,并且通过在光均化器和背光源内的偏振光再循环提供增加的亮度。 在一个实施例中,均化器包括偏振敏感各向异性光散射(PDALS)区域,非偏振敏感各向异性光散射区域和基本上非散射区域。 在另一实施例中,非散射区域是双折射的。 来自包含一个或多个非扩展发光源的背光源的空间不均匀的入射光通量被NPDASL区域有效地散射并入射到PDALS区域,该PDALS区域反向散射与用于有效照射液体所需的偏振状态正交的光 水晶显示面板。 NPDASL和PDALS形成多反射腔,其将增加空间亮度,同时改善适当极化状态的光循环。 在另一实施例中,光均化器包括光准直区域和光引导区域中的至少一个。
    • 97. 发明申请
    • Optical device
    • 光学装置
    • US20090238512A1
    • 2009-09-24
    • US12289980
    • 2008-11-07
    • Masaki Sugiyama
    • Masaki Sugiyama
    • G02F1/035
    • G02F1/035G02B6/29352G02F1/2255G02F2201/16G02F2201/18G02F2203/02G02F2203/07
    • According to an aspect of an embodiment, an optical device comprising: a first modulator for independently modulating first light having a first predetermined polarization mode; a second modulator for independently modulating second light having a second predetermined polarization mode; and a polarization beam coupler having a first port, a second port, a third port, and a fourth port; the polarization beam coupler for inputting the first light from the first modulator via the first port, inputting the second light from the second modulator via the second port, outputting the first light via the third port and inputting reflected and polarization converted light on the first light by a wave plate and a mirror, and outputting the first light having the converted polarization mode and the second light having the predetermined polarization mode via the fourth port.
    • 根据实施例的一个方面,一种光学装置,包括:第一调制器,用于独立地调制具有第一预定偏振模式的第一光; 用于独立地调制具有第二预定偏振模式的第二光的第二调制器; 以及具有第一端口,第二端口,第三端口和第四端口的偏振光束耦合器; 所述偏振光束耦合器用于经由所述第一端口输入来自所述第一调制器的第一光,经由所述第二端口输入来自所述第二调制器的所述第二光,经由所述第三端口输出所述第一光,并在所述第一光上输入反射和偏振转换的光 通过波片和反射镜,经由第四端口输出具有转换的偏振模式的第一光和具有预定偏振模式的第二光。
    • 98. 发明申请
    • Optical modulator and optical signal generation apparatus
    • 光调制器和光信号发生装置
    • US20090195860A1
    • 2009-08-06
    • US12289871
    • 2008-11-06
    • Shin ArahiraHitoshi Murai
    • Shin ArahiraHitoshi Murai
    • G02F1/29H04B10/04
    • G02F2/004G02B6/2713G02B6/274G02F1/2252G02F2002/006G02F2203/07G02F2203/50G02F2203/54
    • An optical modulator includes, a first polarization separation and combination portion, a second polarization separation and combination portion, a first polarization plane-maintaining optical fiber, a second polarization plane-maintaining optical fiber, a third polarization plane-maintaining optical fiber of which a first end is coupled with the second input and output terminal of the second polarization separation and combination portion, the third polarization plane-maintaining optical fiber including a first optical coupler, to which control light that is linearly polarized light is input, a fourth polarization plane-maintaining optical fiber of which a first end is coupled with the third input and output terminal of the second polarization separation and combination portion; and a first polarization plane conversion portion that optically communicates with a second end of the third polarization plane-maintaining optical fiber and a second end of the fourth polarization plane-maintaining optical fiber.
    • 光调制器包括:第一偏振分离和组合部分,第二偏振分离和组合部分,第一偏振面保持光纤,第二偏振平面维持光纤,第三偏振平面保持光纤,其中 第一端与第二偏振分离和组合部分的第二输入和输出端耦合,第三偏振平面保持光纤包括第一光耦合器,被输入的是线性偏振光的控制光,第四偏振面 - 保持光纤的第一端与第二偏振分离和组合部分的第三输入和输出端耦合; 以及第一偏振面转换部,其与第三偏振面保持用光纤的第二端和第四偏振面保持用光纤的第二端光学连通。
    • 99. 发明授权
    • High performance switchable polarizers for optical projection displays and circuits for driving the polarizers
    • 用于光学投影显示器的高性能可切换偏振器和用于驱动偏振器的电路
    • US07339563B1
    • 2008-03-04
    • US09497021
    • 2000-02-01
    • Gregg S. GoyinsRobert J. Lawton
    • Gregg S. GoyinsRobert J. Lawton
    • G09G3/36
    • G02F1/132G02F2203/07G09G3/36
    • The invention is directed towards high performance switchable polarizers for optical projection displays. One embodiment of the invention is a switchable polarizer with (1) two conductive electrodes and (2) a liquid crystal material that is positioned between the two conductive electrodes. The electrodes apply a uniform electric field across the liquid crystal material when one of the electrodes is placed at a first potential and other electrode is placed at a second potential different from the first potential. These two electrodes also heat the liquid crystal material when they conduct current. When equal currents are drawn through the electrodes, the electrodes apply a uniform electric field across the liquid crystal during a heating operation.
    • 本发明涉及用于光学投影显示器的高性能可切换偏振器。 本发明的一个实施例是具有(1)两个导电电极和(2)位于两个导电电极之间的液晶材料的可切换偏振器。 当电极中的一个放置在第一电位并且其他电极被放置在不同于第一电位的第二电位时,电极在液晶材料之间施加均匀的电场。 这两个电极当它们导通电流时也加热液晶材料。 当相等的电流通过电极被拉出时,电极在加热操作期间在液晶上施加均匀的电场。
    • 100. 发明申请
    • LCD-based confidential viewing apparatus utilizing auto-inversion masking
    • 使用自动反转掩蔽的基于LCD的机密观看装置
    • US20070296889A1
    • 2007-12-27
    • US11473592
    • 2006-06-23
    • David A. Struyk
    • David A. Struyk
    • G02F1/1335
    • G02F1/133528G02F1/0136G02F1/13471G02F2201/16G02F2203/07
    • A display apparatus having a pair of polarizers with an optical rotator therebetween, one of the polarizers being a variable polarizer which is independently operated to alternate between substantially orthogonal states of polarization and cause the display to rapidly alternate between a normal positive and inverted negative image, creating a combined neutral image that in indecipherable to the naked eye. Shutter eyewear synchronized with the variable polarizer is used to extract the positive image for viewing by an intended viewer. In another embodiment, both polarizers of the display apparatus are independently variable, which allows for viewing of the desired image using passive polarized eyewear or eyewear incorporating synchronized variable polarizing rotators. Faster independent operation of the variable polarizers provide for flicker-free viewing of the desired image and convenient switching between normal and secure modes of operation, without physical alteration of the display.
    • 一种显示装置,具有在其间具有光旋转器的一对偏振器,其中一个偏振器是可变偏振器,其独立地操作以在基本正交的极化状态之间交替,并使显示器在正常正反转负像之间快速交替, 创造出一种在肉眼无法辨认的组合中立形象。 与可变偏振器同步的快门眼镜用于提取正图像以供预期观看者观看。 在另一个实施例中,显示装置的两个偏振器是独立可变的,其允许使用被动偏振眼镜或并入同步的可变偏振旋转器的眼镜观看期望的图像。 可变偏振器的更独立操作使得所需图像无闪烁观看,并且在正常和安全的操作模式之间方便地切换,而不会显示器的物理改变。