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8 条记录 (耗时 0.019 秒)

    Automatic shading in an LCLV projector
    2.
    发明授权
    Automatic shading in an LCLV projector 失效
    LCLV投影机中的自动阴影

    公开(公告)号：US6061102A

    公开(公告)日：2000-05-09

    申请号：US949105

    申请日：1997-10-10

    申请人： John P. Sheppard ,  Rodney D. Sterling ,  Graeme D. Gow ,  John J. Lyon

    发明人： John P. Sheppard ,  Rodney D. Sterling ,  Graeme D. Gow ,  John J. Lyon

    IPC分类号： H04N5/20 ,  H04N5/74 ,  H04N17/00 ,  H04N3/223 ,  H04N9/28

    CPC分类号： H04N5/20 ,  H04N9/3185 ,  H04N9/3194

    摘要： A process for implementing shading corrections in a video projector. The process selects a color to be shaded, and then sets a projector video level at a selected high video level. A target brightness map is then generated for each of a plurality of preselected shading correction application points at the selected high video level. The process sets the projector video level at a selected low video level, and generates a target brightness map for each of the plurality of shading correction application points at the low video level. Actual light levels are then measured at both the high and low video levels for each shading correction application point, and differences between the target and measured brightness values are minimized. The shading process of the present invention is automatically preformed during projector set-up, and thereby eliminates the inherent subjective and time consuming need for conventional manual shading processes.

    摘要翻译： 用于在视频投影仪中实现阴影校正的过程。 该过程选择要被阴影的颜色，然后在选定的高视频级别设置投影机视频级别。 然后，在所选择的高视频电平上为多个预选阴影校正应用点中的每一个生成目标亮度图。 该处理将投影仪视频电平设置在选定的低视频电平，并且在低视频电平下为多个阴影校正应用点中的每一个生成目标亮度图。 然后在每个阴影校正应用点的高和低视频电平上测量实际光强度，并且目标和测量的亮度值之间的差异被最小化。 本发明的遮光过程在投影机设置期间自动进行，从而消除了传统的手动遮蔽过程固有的主观和耗时的需要。

    Tunable fabry-perot interferometer using entropic materials
    4.
    发明授权
    Tunable fabry-perot interferometer using entropic materials 失效
    可调谐的fabry-perot干涉仪使用熵材料

    公开(公告)号：US06597461B1

    公开(公告)日：2003-07-22

    申请号：US09766687

    申请日：2001-01-19

    申请人： Ravi K. Verma ,  Michael J. Little ,  Thomas S. Tyrie ,  John J. Lyon ,  Ron Pollock

    发明人： Ravi K. Verma ,  Michael J. Little ,  Thomas S. Tyrie ,  John J. Lyon ,  Ron Pollock

    IPC分类号： G01B902

    CPC分类号： G02B26/002 ,  G01B9/0209 ,  G01B2290/25 ,  G02B26/001

    摘要： A cost-effective broadband tunable Fabry-Perot interferometer uses entropic, rather than enthalpic, materials to provide the compliant support for the interferometer's movable mirror. Entropic materials exhibit an entropic plateau region over a wide frequency range with a Young's modulus much lower than enthalpic materials, linear elastic behavior over a wide deformation range, and, in certain geometries, energy and stress behavior that tend to stabilize the movable mirror during deformation. The compliant support can be configured in a variety of geometries including compression, tension, sheer and diaphragm and of a variety of materials including elastomers, aerogels or other long chained polymers.

    摘要翻译： 具有成本效益的宽带可调式法布里 - 珀罗干涉仪使用熵而不是焓材料为干涉仪可移动镜提供合适的支持。 熵材料在宽频率范围内表现出熵平坦的区域，其杨氏模量比焓材料低得多，在宽变形范围内呈线性弹性，并且在某些几何形状下，在变形期间倾向于使可移动反射镜趋于稳定的能量和应力行为 。 顺应性支撑件可以被配置成各种几何形状，包括压缩，张力，剪切和隔膜以及各种材料，包括弹性体，气凝胶或其它长链聚合物。

    Paper white direct view display
    7.
    发明授权
    Paper white direct view display 失效
    纸白色直观显示

    公开(公告)号：US06639572B1

    公开(公告)日：2003-10-28

    申请号：US09546285

    申请日：2000-04-10

    申请人： Michael L. Little ,  John J. Lyon

    发明人： Michael L. Little ,  John J. Lyon

    IPC分类号： G09G320

    CPC分类号： G02B26/0841 ,  G02B26/02 ,  G09G3/3433

    摘要： A low power, paper white, direct-view display includes an array of hinged micromirrors that are deflected between two states, a first state in which the micromirror covers a portion of the background and a second state in which the micromirror uncovers the background. In one particular configuration, a stability mechanism is incorporated in the display so that the micromirrors switch between stable states and remain in those stable states unless and until an actuating force is applied to the micromirrors that is sufficient to overcome an actuation threshold. The mechanics of the hinge, stiction due to Van der Waals forces or a combination of both can be used to provide bistability. Bistability allows power to be removed from the display between updates but requires active actuation between both states. The drive electronics are similar to those used in multiplexed LCDs.

    摘要翻译： 低功率纸白色直视显示器包括在两种状态之间偏转的铰接微镜阵列，其中微镜覆盖背景的一部分的第一状态和微镜揭示背景的第二状态。 在一个特定的配置中，稳定性机构并入显示器中，使得微镜在稳定状态之间切换并保持在那些稳定状态，除非和直到致动力被施加到微镜足以克服激活阈值。 铰链的力学，由于范德华力或两者的组合可以用来提供双稳态。 双稳态允许在更新之间从显示器中移除电源，但需要在两个状态之间进行主动启动。 驱动电路类似于复用LCD中使用的驱动电路。

    Automatic convergence system for color video projector
    8.
    发明授权
    Automatic convergence system for color video projector 失效
    彩色投影机自动会聚系统

    公开(公告)号：US5345262A

    公开(公告)日：1994-09-06

    申请号：US923195

    申请日：1992-07-31

    申请人： Eugene M. Yee ,  Beverly E. Sutherland ,  John J. Lyon ,  Tiemen T. Spits ,  Richard M. Filia

    发明人： Eugene M. Yee ,  Beverly E. Sutherland ,  John J. Lyon ,  Tiemen T. Spits ,  Richard M. Filia

    IPC分类号： H04N9/28 ,  H04N9/31 ,  H04N17/04 ,  H04N17/02

    CPC分类号： H04N9/28 ,  H04N17/04

    摘要： A color video projection system (10) in which images of three separate colors (22,24,26) are separately projected to converge on a common region of the screen (20) is provided with automatic convergence control to ensure that three images are precisely superimposed upon each other. A test pattern of a number of pattern units (36,38) of an intensity (42,44,48) that varies over each unit in a similar manner is imaged on a two dimensional matrix array of charged coupled devices (CCD) (32). The test pattern is projected in sequence by each of the three CRT projectors (50,54,58,14,16,18) of the system, and during the projection of the test pattern, the position of the centroid (40) of each unit of the test pattern is determined from the light intensity pattern received by the CCD matrix array, and stored (112). The centroid positions of each unit of a test pattern of two of the projectors are compared with positions of the centroids of each unit of the test pattern projected by a third one of projectors. The comparison develops an error signal for each unit of each test pattern, enabling convergence correction signals to be fed to convergence control deflections coils (120,122,124) of each of the cathode ray tubes (50,54,58) so as to effectively shift each of two of the images to superposition with the third.

    摘要翻译： 提供了分别投影以会聚在屏幕（20）的公共区域上的三种分开的颜色（22,24,26）的图像的彩色视频投影系统（10）具有自动会聚控制，以确保三个图像是精确的 彼此叠加。 以类似的方式在每个单元上变化的强度（42,44,48）的多个图案单元（36,38）的测试图案被成像在电荷耦合器件（CCD）（32）的二维矩阵阵列上 ）。 测试图案按照系统的三个CRT投影仪（50,54,58,14,16,18）中的每一个按顺序投影，并且在测试图案的投影期间，每个的重心（40）的位置 由CCD矩阵阵列接收的光强图案确定测试图案的单位，并存储（112）。 将两台投影机的测试图案的每个单元的重心位置与由第三台投影机投影的测试图案的每个单元的质心位置进行比较。 比较产生每个测试图案的每个单元的误差信号，使得能够将会聚校正信号馈送到每个阴极射线管（50,54,58）的收敛控制偏转线圈（120,122,124），以便有效地将每个 两个图像与第三个图像叠加。