Compensation for DC balancing of liquid crystal displays
    1.
    发明授权
    Compensation for DC balancing of liquid crystal displays 失效
    补偿液晶显示器的直流平衡

    公开(公告)号:US06313893B1

    公开(公告)日:2001-11-06

    申请号:US08995030

    申请日:1997-12-19

    IPC分类号: G02F11347

    摘要: In a reflective mode FLC application, a ¼-wave plate compensating FLC is used in series with a ¼-wave imaging FLC to compensate for the effects of DC balancing. Alternatively, the compensating wave plate could be any odd ¼-wave multiple, such as 3&lgr;/4, 5&lgr;/4, etc. The FLCs are driven in synchronization between on and off states with the total effective retardation for each FLC being either none or one-half wavelength in a double pass.

    摘要翻译: 在反射模式FLC应用中,波浪板补偿FLC与a波成像FLC串联使用,以补偿直流平衡的影响。 或者,补偿波片可以是任何奇波多重,例如3lambd / 4,5lambd / 4等.FLCs在开和关状态之间同步地被驱动,每个FLC的总有效延迟是无或一个 - 双波长波长

    Methods of compensating liquid crystal displays using DC balancing
    2.
    发明授权
    Methods of compensating liquid crystal displays using DC balancing 失效
    使用直流平衡补偿液晶显示器的方法

    公开(公告)号:US06771339B2

    公开(公告)日:2004-08-03

    申请号:US10006737

    申请日:2001-10-19

    IPC分类号: G02F71335

    摘要: In a reflective mode FLC application, a ¼-wave plate compensating FLC is used in series with a ¼-wave imaging FLC to compensate for the effects of DC balancing. Alternatively, the compensating wave plate could be any odd ¼-wave multiple, such as 3&lgr;/4, 5&lgr;/4, etc. The FLCs are driven in synchronization between on and off states with the total effective retardation for each FLC being either none or one-half wavelength in a double pass.

    摘要翻译: 在反射模式FLC应用中,¼波片补偿FLC与¼波成像FLC串联使用,以补偿直流平衡的影响。 或者,补偿波片可以是任何奇数的1/4波数,例如3λ/4,5λ/ 4等.FLCs在开和关状态之间同步地被驱动,每个FLC的总有效延迟是无或者 双通道的二分之一波长。

    Separating white light into polarized, colored light
    3.
    发明授权
    Separating white light into polarized, colored light 失效
    将白光分为极化的彩色光

    公开(公告)号:US06490017B1

    公开(公告)日:2002-12-03

    申请号:US09238713

    申请日:1999-01-28

    IPC分类号: G02F11335

    摘要: An electro-optic shutter is provided that includes first and second liquid crystal devices located along an optical path and first and second color-selective layers located between the first and second liquid crystal devices. Each liquid crystal device is adapted to rotate the polarization of incident light to a substantially orthogonal polarization in response to being in a first state, and to not substantially change the polarization of incident light in response to being in a second state. The first color-selective layer is adapted to transmit first and second colors and a first polarization of a third color. The second color-selective layer is adapted to transmit the first and the third colors and a second polarization of the second color that is substantially orthogonal to the first polarization. An electro-optic shutter is also provided that includes a color-selective layer, a liquid crystal device to receive light from the color-selective layer and a polarizer to receive light from the liquid crystal layer. The color-selective layer is adapted to transmit a first color, a first polarization of a second color, and a substantially orthogonal polarization of a third color. The liquid crystal device is adapted to rotate the polarization of light to a substantially orthogonal polarization when in a first state and to not substantially rotate the polarization of light when in a second state. The electro-optic shutter can be employed in projection systems.

    摘要翻译: 提供一种电光快门,其包括沿着光路定位的第一和第二液晶装置以及位于第一和第二液晶装置之间的第一和第二颜色选择层。 每个液晶装置适于响应于处于第一状态而将入射光的偏振旋转到基本上正交的偏振,并且响应于处于第二状态而基本上不改变入射光的偏振。 第一颜色选择层适于透射第一和第二颜色和第三颜色的第一偏振。 第二颜色选择层适于透射第一颜色和第三颜色以及基本上正交于第一偏振的第二颜色的第二偏振。 还提供一种电光快门,其包括颜色选择层,用于接收来自颜色选择层的光的液晶装置和用于接收来自液晶层的光的偏振器。 颜色选择层适于透射第一颜色,第二颜色的第一偏振和第三颜色的基本正交的偏振。 液晶装置适于在处于第一状态时将光的偏振旋转为基本上正交的偏振,并且在处于第二状态时基本不旋转光的偏振。 电光闸可用于投影系统。

    Image processing system optical shifting mechanism
    4.
    发明授权
    Image processing system optical shifting mechanism 有权
    图像处理系统光学移位机制

    公开(公告)号:US07116370B1

    公开(公告)日:2006-10-03

    申请号:US09540281

    申请日:2000-03-31

    IPC分类号: H04N5/225

    摘要: An image processing system processes light conveying visual pattern information represented by individual light rays. The system includes an optical assembly having an input surface and an output surface. The input and output surfaces define a plurality of input and output positions, respectively, for the light rays to enter and exit, respectively, the assembly. The assembly includes a light-shifting apparatus operable so that a respective one of the light rays entering a respective one of the input positions is selectively shiftable by the apparatus in a first direction and, subsequently, in a second direction angled with respect to the first direction from a preceding one to another of the output positions. The assembly is further operable so that following each shifting operation, a respective one of the light rays transmitted by the assembly from an arbitrarily selected one of the output positions is solely derived from the light received from a single one of the input positions.

    摘要翻译: 图像处理系统处理光传送由各个光线表示的视觉图案信息。 该系统包括具有输入表面和输出表面的光学组件。 输入和输出表面分别定义多个输入和输出位置,以使光线分别进入和退出组件。 该组件包括可移动的装置,其可操作以使进入相应一个输入位置的相应的一根光线能够由该装置沿第一方向选择性地移动,并且随后在相对于第一方向成角度的第二方向 方向从输出位置的前一个到另一个。 组件进一步可操作,使得在每个移动操作之后,通过组件从任意选择的一个输出位置传输的相应的一个光线仅从从单个输入位置接收的光导出。

    Light separator for testing DMD performance
    5.
    发明授权
    Light separator for testing DMD performance 失效
    用于测试DMD性能的光分离器

    公开(公告)号:US5548443A

    公开(公告)日:1996-08-20

    申请号:US454755

    申请日:1995-05-31

    申请人: Austin L. Huang

    发明人: Austin L. Huang

    CPC分类号: G02B27/126 G02B26/0841

    摘要: A light separator (20) for testing the tilt angles of mirror elements (21) of a digital micro-mirror device. The light separator (20) is comprised of two triangular prisms (23, 25). A bottom prism (23) receives light from all mirror elements (21). It transmits light from all mirror elements having a tilt angle over a specified angle (21a, 21b) from a different face than light from mirror elements having a tilt angle less than the specified angle (21c). A top prism (25) receives light from one face of the bottom prism (23). It further divides the light, so that light from all mirror elements having a tilt angle within a specified range (21a) is transmitted from one face and light from other mirror elements (21b) is transmitted from another face.

    摘要翻译: 一种用于测试数字微镜装置的镜元件(21)的倾斜角的光分离器(20)。 光分离器(20)由两个三角棱镜(23,25)组成。 底棱镜(23)从所有镜元件(21)接收光。 从与来自具有小于指定角度(21c)的倾斜角度的反射镜元件的光的不同面,将来自具有倾斜角度的倾斜角度的所有反射镜元件的光透过指定角度(21a,21b)。 顶棱镜(25)从底棱镜(23)的一个面接收光。 它进一步划分光,使得来自具有在特定范围(21a)内的倾斜角的所有镜子元件的光从一个面透射,并且来自其它镜元件(21b)的光从另一个面传递。

    Anti-reflective coatings for spatial light modulators
    6.
    发明授权
    Anti-reflective coatings for spatial light modulators 有权
    用于空间光调制器的防反射涂层

    公开(公告)号:US06282010B1

    公开(公告)日:2001-08-28

    申请号:US09306271

    申请日:1999-05-06

    IPC分类号: G02F103

    CPC分类号: G02F1/133502

    摘要: A spatial light modulator with an anti-reflective coating (ARC) 100 integrated into its structure. The manufacturing of the device is altered to include deposition of an ARC 100, and any necessary patterning and etching to allow the elements of the array to operate properly. The ARC could reside in several places of the element structure including over the addressing circuitry 26, over a middle layer 32 or on the underside of the reflective structure 10. Micromechanical spatial light modulators, as well as non-moving modulators, such as reflective and transmissive LCD modulators can use the invention.

    摘要翻译: 具有集成到其结构中的抗反射涂层(ARC)100的空间光调制器。 改变器件的制造以包括ARC 100的沉积,以及任何必要的图案化和蚀刻,以允许阵列的元件正常工作。 ARC可以驻留在元件结构的多个位置,包括在寻址电路26上方,中间层32上或反射结构10的下侧。微机械空间光调制器以及非移动调制器,例如反射和 透射式LCD调制器可以使用本发明。

    Producing colored light beams from white light
    7.
    发明授权
    Producing colored light beams from white light 失效
    从白光生成彩色光束

    公开(公告)号:US06238051B1

    公开(公告)日:2001-05-29

    申请号:US09239216

    申请日:1999-01-28

    申请人: Austin L. Huang

    发明人: Austin L. Huang

    IPC分类号: G03B2114

    摘要: A color-separating prism includes first, second, and third component prisms that form first and second adjacent pairs of faces and include nonadjacent faces. The third component prism has a front surface or face. The color-separating prism includes a first reflective layer disposed in part between the first adjacent pair of faces and in part on one nonadjacent face and a second reflective layer disposed in part between the second adjacent pair of faces and in part on another nonadjacent face. The first and second reflective layers are inclined to reflect portions of light incident on the front surface back toward the front surface for total internal reflection. The color-separating may be used to produce narrow-spectral light from broader spectral light. A first portion of a light beam substantially in a first wavelength range is reflected from the first reflective layer back toward the front face of the prism. A second portion of the light beam substantially in a second wavelength range is reflected from the second reflective layer back toward the front face of the prism. The first and second portions are totally internally reflected from the front face. The color-separating prism can be used in display systems.

    摘要翻译: 分色棱镜包括形成第一和第二相邻面对并包括不相邻面的第一,第二和第三部件棱镜。 第三分量棱镜具有前表面或表面。 分色棱镜包括第一反射层,第一反射层部分地设置在第一相邻的一对面之间,部分地设置在一个不相邻的面上,第二反射层部分地设置在第二相邻的一对面之间,部分地设置在另一个不相邻的面上。 第一和第二反射层倾斜以将入射在前表面上的光的一部分反射回前表面,用于全内反射。 分色可用于从较宽的光谱光产生窄光谱光。 基本上在第一波长范围内的光束的第一部分从第一反射层反射回棱镜的前表面。 基本上在第二波长范围内的光束的第二部分从第二反射层反射回棱镜的前表面。 第一和第二部分从前表面全部内反射。 分色棱镜可用于显示系统。

    Spatial light image display system with synchronized and modulated light
source
    8.
    发明授权
    Spatial light image display system with synchronized and modulated light source 失效
    具有同步和调制光源的空间光图像显示系统

    公开(公告)号:US5706061A

    公开(公告)日:1998-01-06

    申请号:US414707

    申请日:1995-03-31

    IPC分类号: H04N9/31 H04N9/12

    CPC分类号: H04N9/3114

    摘要: A color image display system (10, 110, 120, 150) having a lamp power supply (78, 134, 152) switching rate being a multiple of, and synchronized to, a video frame rate. An AC component of a lamp driving waveform which may cause variations in intensity of the lamp output is synchronized to the video frame rate. Synchronizing the lamp power supply switching rate to the frame rate stops the beating and rolling of color bands in the video frame that may be produced by a ripple in light intensity. An odd number of switching cycles per two frame periods is chosen to alternate the phase of the ripple pattern frame-to-frame for ripple cancellation through integration. The lamp driving waveform may be amplitude modulated (90) to balance a lamp (14) that has spectral deficiencies. A DMD spatial light modulator (26) is utilized to modulate the colored light and generate a light image on a display (42) in either a sequential, or non-sequential image display system.

    摘要翻译: 具有灯电源(78,134,152)的彩色图像显示系统(10,110,120,150)的切换速率是视频帧速率的倍数并与其同步。 可能导致灯输出强度变化的灯驱动波形的AC分量与视频帧速率同步。 将灯电源切换速率与帧速率同步可以抑制视频帧中由于光强度波动而产生的色带的跳动和滚动。 选择每两帧周期的奇数个切换周期,以通过集成将波纹图案的帧到帧的相位交替进行纹波消除。 可以对灯驱动波形进行幅度调制(90)以平衡具有频谱不足的灯(14)。 使用DMD空间光调制器(26)来调制有色光并在顺序或非顺序图像显示系统中的显示器(42)上产生光图像。

    Color temperature compensation for digital display system with color
wheel
    9.
    发明授权
    Color temperature compensation for digital display system with color wheel 失效
    具有色轮数字显示系统的色温补偿

    公开(公告)号:US5668572A

    公开(公告)日:1997-09-16

    申请号:US451387

    申请日:1995-05-26

    CPC分类号: G02B26/008 G02B26/0841

    摘要: A method of adjusting color temperature of images displayed by a display system (10) whose images are based on sequential pixel data and are filtered with a color wheel (15, 15', 15"). The relative display times for each color are adjusted to result in a corresponding adjustment of color temperature. In a first embodiment (FIG. 2), the size of the color wheel's segments are changed as well as the display times for data corresponding to each segment. In a second embodiment (FIG. 3), the display times for data corresponding to one or more segments are decreased with a black display time to fill in the difference.

    摘要翻译: 一种调整由图像基于顺序像素数据显示的图像显示的图像的色温并用色轮(15,15',15“)滤波的方法。 调整每种颜色的相对显示时间,以产生相应的色温调整。 在第一实施例(图2)中,色轮片段的尺寸以及对应于每个片段的数据的显示时间改变。 在第二实施例(图3)中,对应于一个或多个段的数据的显示时间以黑色显示时间减小以填补该差。