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1.发明授权公开(公告)号：US06507330B1
公开(公告)日：2003-01-14
申请号：US09809741
申请日：2001-03-14
申请人： Mark A. Handschy , Jiuzhi Xue , Lianhua Ji
发明人： Mark A. Handschy , Jiuzhi Xue , Lianhua Ji
IPC分类号： G09G336
CPC分类号： G09G3/3651 , G09G3/36 , G09G3/3614 , G09G3/3655 , G09G2310/0251 , G09G2310/06 , G09G2310/063 , G09G2320/02 , G09G2320/0204 , G09G2320/0257
摘要： A method of operating a liquid crystal cell includes DC-balancing by displaying an inverse image with electric fields of increased magnitude relative to the image producing electric fields. While the inverse image is displayed the image is prevented from being visible by either turning off the light source or re-directing or blocking the light from reaching the viewing area. The image producing electric fields and the inverse image producing electric fields are such that the cumulative time integral of the electric fields that are present in one direction across the liquid crystal material is substantially equal to the cumulative time integral of the electric fields that are present in the opposite direction during the given period of time during the operation of liquid crystal cell. The time duration of the inverse image portion is shorter than the time duration of the image portion by an amount proportional to the increased magnitude of the additional electric fields. Because of the shorter time period when no image is visible, the system brightness is increased.
摘要翻译： 操作液晶单元的方法包括通过相对于产生图像的电场显示具有增大幅度的电场的逆图像的DC平衡。 当显示逆图像时，通过关闭光源或重新引导或阻挡光线到达观看区域，防止图像可见。 图像产生电场和逆图像产生电场使得在液晶材料上沿一个方向存在的电场的累积时间积分基本上等于存在于电场中的电场的累积时间积分 在液晶单元操作期间的给定时间段内的相反方向。 逆图像部分的持续时间比图像部分的持续时间短，与附加电场的幅度增加成比例的量。 由于无图像可见时间较短，系统亮度增加。
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公开(公告)号：US08107344B2
公开(公告)日：2012-01-31
申请号：US12639821
申请日：2009-12-16
IPC分类号： G11B7/00
CPC分类号： G02F1/292 , G02F1/13363 , G02F2001/133565 , G03H1/02 , G03H1/16 , G03H2001/0224 , G03H2223/13 , G11B7/0065 , G11B7/128 , G11B7/1369
摘要： A spatial light modulator (SLM) having a phase mask that is provided as an internal component thereof. The phase mask can be provided as a multilevel surface of relatively higher index of refraction material on an inner surface of a transmissive cover window or as a separate transmissive window between the cover window and the pixels of the SLM. If the phase mask is to be used with a liquid crystal SLM, then it may be desirable to planarize the surface of the cover window contacting the liquid crystal by providing a layer of relatively lower index of refraction material adjacent the multilevel surface. The phase mask can also be provided on the transmissive cover window by patterned ion deposition, exposing patterned light to a photopolymeric material, or in some other suitable fashion. Arranging for the pixel electrodes to be at one of multiple levels rather than lying in an exactly planar relationship can also effectively create the phase mask.
摘要翻译： 具有作为其内部部件提供的相位掩模的空间光调制器（SLM）。 相位掩模可以被提供为在透射盖窗的内表面上的相对较高的折射率材料的多层表面，或者作为在窗口窗口和SLM的像素之间的单独透射窗口。 如果相位掩模与液晶SLM一起使用，则可能需要通过提供相邻较低折射率材料层与多层表面相邻来平坦化与液晶接触的盖窗的表面。 相位掩模也可以通过图案化离子沉积在透射覆盖窗口上提供，将图案化光曝光到光聚合物材料上，或以某种其它合适的方式。 将像素电极排列成多个电平中的一个而不是处于精确的平面关系，也可以有效地产生相位掩模。
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公开(公告)号：US08059142B2
公开(公告)日：2011-11-15
申请号：US11969734
申请日：2008-01-04
CPC分类号： G09G3/3629 , G09G3/2014 , G09G3/3618 , G09G2300/0809 , G09G2300/0857 , G09G2310/0235 , G09G2320/0285 , G09G2320/0673
摘要： A display system that achieves a gamma characteristic different than 1, such as a gamma characteristic of 2 for example. The gamma characteristic may be selectable and it may be selectable via timing characteristics rather than by varying the intensity of the light source. Defective memory registers are also compensated for by selecting them to store bits of relatively lower significance.
摘要翻译： 实现例如不同于1的伽马特性的显示系统，例如2的伽马特性。 伽马特性可以是可选择的，并且其可以通过定时特性而不是通过改变光源的强度来选择。 还通过选择存储器寄存器来存储相对较低重要性的位来补偿缺陷存储器寄存器。
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公开(公告)号：US07012730B2
公开(公告)日：2006-03-14
申请号：US10067516
申请日：2002-02-04
IPC分类号： G02B26/60 , G02F1/1333 , G03B21/28
CPC分类号： G02F1/1336 , G02B6/0033 , G02B6/0056 , G02B27/1033 , G02B27/1053 , G02B27/1086 , G02B27/123 , G02B27/145 , G02B27/283 , G02F1/133526 , G02F1/133606 , G02F1/133609 , G02F1/13362 , G02F1/136277 , G02F2001/133616 , G02F2001/133622 , Y10S362/80
摘要： A system for producing modulated light is disclosed. The system comprises a spatial light modulator including a light modulating medium switchable between different states so as to act on light in ways which form overall patterns of modulated light. The system also includes an arrangement for switching the modulating medium between the different states in a controlled way and an illumination arrangement for producing a source of light. The system further includes an optics arrangement for directing light from the source of light into the spatial light modulator and for directing light from the spatial light modulator through a predetermined source imaging area. The optics arrangement cooperates with the illumination arrangement and the spatial light modulator so as to produce a real image of the source of light within the source imaging area such that an individual is able to view a virtual image of the overall patterns of modulated light from the source imaging area. A variety of novel optics arrangements are disclosed including specific combinations of different light sources, diffusing plates, polarizers, beam splitters, analyzers, lenses, mirrors, and holographic optical elements which allow the overall optical arrangement to be miniaturized to the same degree and in coordination with the spatial light modulator. The different light sources include using a plurality of light sources, such as LEDs, to form an array of light sources, each of the light sources providing light to a corresponding portion of the spatial light modulator.
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5.发明授权公开(公告)号：US06359723B1
公开(公告)日：2002-03-19
申请号：US09735109
申请日：2000-12-13
IPC分类号： G02B2600
CPC分类号： G02F1/1336 , G02B6/0033 , G02B6/0056 , G02B27/1033 , G02B27/1053 , G02B27/1086 , G02B27/123 , G02B27/145 , G02B27/283 , G02F1/133526 , G02F1/133606 , G02F1/133609 , G02F1/13362 , G02F1/136277 , G02F2001/133616 , G02F2001/133622 , Y10S362/80
摘要： A system for producing modulated light is disclosed. The system comprises a spatial light modulator including a light modulating medium switchable between different states so as to act on light in ways which form overall patterns of modulated light. The system also includes an arrangement for switching the modulating medium between the different states in a controlled way and an illumination arrangement for producing a source of light. The system further includes an optics arrangement for directing light from the source of light into the spatial light modulator and for directing light from the spatial light modulator through a predetermined source imaging area. The optics arrangement cooperates with the illumination arrangement and the spatial light modulator so as to produce a real image of the source of light within the source imaging area such that an individual is able to view a virtual image of the overall patterns of modulated light from the source imaging area. A variety of novel optics arrangements are disclosed including specific combinations of different light sources, diffusing plates, polarizers, beam splitters, analyzers, lenses, mirrors, and holographic optical elements which allow the overall optical arrangement to be miniaturized to the same degree and in coordination with the spatial light modulator. The different light sources include using a plurality of light sources, such as LEDs, to form an array of light sources, each of the light sources providing light to a corresponding portion of the spatial light modulator.
摘要翻译： 公开了一种用于产生调制光的系统。 该系统包括空间光调制器，其包括可在不同状态之间切换的光调制介质，以便以形成调制光的整体图案的方式作用于光。 该系统还包括用于以受控方式在不同状态之间切换调制介质的装置和用于产生光源的照明装置。 该系统还包括用于将来自光源的光引导到空间光调制器中并用于引导来自空间光调制器的光通过预定源成像区域的光学装置。 光学装置与照明装置和空间光调制器配合，以产生源成像区域内的光源的真实图像，使得个体能够观察来自该成像区域的调制光的整体图案的虚像 源成像区域。 公开了各种新颖的光学装置，其包括不同光源，扩散板，偏振器，分束器，分析器，透镜，反射镜和全息光学元件的特定组合，其允许整体光学装置以相同的程度和协调地小型化 与空间光调制器。 不同的光源包括使用诸如LED的多个光源来形成光源阵列，每个光源向空间光调制器的相应部分提供光。
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公开(公告)号：US5757348A
公开(公告)日：1998-05-26
申请号：US361965
申请日：1994-12-22
CPC分类号： G09G3/3406 , G09G3/3651 , G09G2310/0235 , G09G2310/063 , G09G2320/0633 , G09G2320/064 , G09G3/2018 , G09G3/2022 , G09G3/2025 , G09G3/2081
摘要： A system and method for producing spatially modulated monochrome or color light having gray scale during a given period of time includes a spatial light modulator having a light modulating arrangement switchable between different states so as to act on light in different ways. A switching arrangement switches the modulating arrangement between different states in a controlled way during the period. The system also includes an illumination arrangement for selectively and alternately directing light of constant intensity and varying intensity into the modulating arrangement during predetermined subperiods of the period. In a color version of the system, the illumination arrangement directs light of different colors into the modulating arrangement during predetermined subperiods of the period, thereby providing a system for producing modulated colored light having color gray scale during a given period. In one embodiment of the present invention, the predetermined subperiods include a first plurality of subperiods of unequal lengths of time which, if arranged in order timewise, increase in duration by a factor of two. The predetermined subperiods further include a second plurality of subperiods and the illumination arrangement directs light of variable intensities into the modulator arrangement during each of the second plurality of subperiods which are of equal durations. Each of the different intensities of light double from subperiod to subperiod when the subperiods of equal length are arranged in a particular order.
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7.发明授权
公开(公告)号：US5500748A
公开(公告)日：1996-03-19
申请号：US187592
申请日：1994-01-26
IPC分类号： G02F1/1368 , G09G3/36 , G02F1/1343
CPC分类号： G02F1/1368 , G09G3/3648 , G09G2300/0885 , G09G2310/0289
摘要： There is disclosed herein a liquid crystal spatial light modulator which includes, among other components, a layer of liquid crystal material which changes the way in which it acts on light in response to predetermined changes in voltage across the layer, whereby to modulate the light so acted upon, and an arrangement for applying a light modulating voltage across the layer of liquid crystal material and for modulating the voltage during a given modulation period. This latter arrangement includes a non-linear capacitor and a voltage coupling scheme for changing the voltage across the capacitor during the modulation period in a way which changes the capacitance of the capacitor and thereby capacitively couples at least a part of the change in voltage across the capacitor to the layer of liquid crystal material.
摘要翻译： 这里公开了一种液晶空间光调制器，其包括响应于跨越层的电压的预定变化而改变其作用于光的方式的液晶材料层，由此调制光线 以及用于在液晶材料层上施加光调制电压并在给定的调制周期期间调制电压的装置。 后一种布置包括非线性电容器和电压耦合方案，用于在调制周期期间以改变电容器电容的方式改变电容器两端的电压，从而电容耦合电压变化的至少一部分 电容器到液晶材料层。
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8.发明授权Polarization conversion and color-combination techniques for pico projector illuminators 失效pico投影机照明器的极化转换和色彩组合技术公开(公告)号：US08337020B2
公开(公告)日：2012-12-25
申请号：US12611021
申请日：2009-11-02
IPC分类号： G03B21/14
CPC分类号： G02B27/283 , G03B21/2013 , G03B21/2033 , G03B21/2073 , G03B33/06 , H04N9/3167 , H04N9/3173
摘要： Disclosed are illumination systems especially suitable for very small data projectors, called pico projectors. The disclosed illumination systems provide high optical efficiency for projectors that need polarized light but utilize unpolarized light sources such as light-emitting diodes. Some of the disclosed illumination systems make use of light sources of different colors, and provide polarization conversion in ways based on color-selective elements of a variety of different types to convert substantially all the light emitted by the light sources to a single polarization, without increasing the effective optical extent of the source. Other disclosed illumination system provide compact ways to combine light from differently colored light sources without the use of bulky x-cube or angled dichroic elements.
摘要翻译： 公开了特别适用于称为微型投影仪的非常小的数据投影仪的照明系统。 所公开的照明系统为需要偏振光但使用非偏振光源（例如发光二极管）的投影仪提供高光学效率。 一些所公开的照明系统利用不同颜色的光源，并且基于各种不同类型的颜色选择元件的方式提供偏振转换，以将基本上由光源发射的所有光转换成单个极化，而不需要 增加源的有效光程。 其他公开的照明系统提供了组合来自不同颜色的光源的光的紧凑方式，而不使用笨重的x立方体或有角度的二向色元件。
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公开(公告)号：US20100091631A1
公开(公告)日：2010-04-15
申请号：US12639821
申请日：2009-12-16
IPC分类号： G11B7/00
CPC分类号： G02F1/292 , G02F1/13363 , G02F2001/133565 , G03H1/02 , G03H1/16 , G03H2001/0224 , G03H2223/13 , G11B7/0065 , G11B7/128 , G11B7/1369
摘要： A spatial light modulator (SLM) having a phase mask that is provided as an internal component thereof. The phase mask can be provided as a multilevel surface of relatively higher index of refraction material on an inner surface of a transmissive cover window or as a separate transmissive window between the cover window and the pixels of the SLM. If the phase mask is to be used with a liquid crystal SLM, then it may be desirable to planarize the surface of the cover window contacting the liquid crystal by providing a layer of relatively lower index of refraction material adjacent the multilevel surface. The phase mask can also be provided on the transmissive cover window by patterned ion deposition, exposing patterned light to a photopolymeric material, or in some other suitable fashion. Arranging for the pixel electrodes to be at one of multiple levels rather than lying in an exactly planar relationship can also effectively create the phase mask.
摘要翻译： 具有作为其内部部件提供的相位掩模的空间光调制器（SLM）。 相位掩模可以被提供为在透射盖窗的内表面上的相对较高的折射率材料的多层表面，或者作为在窗口窗口和SLM的像素之间的单独透射窗口。 如果相位掩模与液晶SLM一起使用，则可能需要通过提供相邻较低折射率材料层与多层表面相邻来平坦化与液晶接触的盖窗的表面。 相位掩模也可以通过图案化离子沉积在透射覆盖窗口上提供，将图案化光曝光到光聚合物材料上，或以某种其它合适的方式。 将像素电极排列成多个电平中的一个而不是处于精确的平面关系，也可以有效地产生相位掩模。
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公开(公告)号：US07656768B2
公开(公告)日：2010-02-02
申请号：US11046197
申请日：2005-01-27
IPC分类号： G11B7/00
CPC分类号： G02F1/292 , G02F1/13363 , G02F2001/133565 , G03H1/02 , G03H1/16 , G03H2001/0224 , G03H2223/13 , G11B7/0065 , G11B7/128 , G11B7/1369
摘要： A spatial light modulator (SLM) having a phase mask that is provided as an internal component thereof. The phase mask can be provided as a multilevel surface of relatively higher index of refraction material on an inner surface of a transmissive cover window or as a separate transmissive window between the cover window and the pixels of the SLM. If the phase mask is to be used with a liquid crystal SLM, then it may be desirable to planarize the surface of the cover window contacting the liquid crystal by providing a layer of relatively lower index of refraction material adjacent the multilevel surface. The phase mask can also be provided on the transmissive cover window by patterned ion deposition, exposing patterned light to a photopolymeric material, or in some other suitable fashion. Arranging for the pixel electrodes to be at one of multiple levels rather than lying in an exactly planar relationship can also effectively create the phase mask.
摘要翻译： 具有作为其内部部件提供的相位掩模的空间光调制器（SLM）。 相位掩模可以被提供为在透射盖窗的内表面上的相对较高的折射率材料的多层表面，或者作为在窗口窗口和SLM的像素之间的单独透射窗口。 如果相位掩模与液晶SLM一起使用，则可能需要通过提供相邻较低折射率材料层与多层表面相邻来平坦化与液晶接触的盖窗的表面。 相位掩模也可以通过图案化离子沉积在透射覆盖窗口上提供，将图案化光曝光到光聚合物材料上，或以某种其它合适的方式。 将像素电极排列成多个电平中的一个而不是处于精确的平面关系，也可以有效地产生相位掩模。
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