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    • 2. 发明授权
    • Optical element and optical pickup
    • 光学元件和光学拾取器
    • US07787063B2
    • 2010-08-31
    • US11447772
    • 2006-06-06
    • Satoru Hirose
    • Satoru Hirose
    • G02F1/13
    • G02B3/14G02F1/134309G02F2001/294G11B7/1369G11B7/13925
    • On one side of a liquid crystal layer, a first electrode is provided, and, on the other side of the liquid crystal layer, a second electrode, composed of a plurality of individual electrodes, and a third electrode are provided. The second and third electrodes have holes that are increasingly small away from the liquid crystal layer. When the potential at the third electrode is set equal to or lower than the potential at the second electrode, the liquid crystal layer acts as a convex lens; when the potential at the third electrode is set higher than the potential at the second electrode, the liquid crystal layer acts as a concave lens. The range in which the focal length can be varied depends on the diameters of the holes, and giving the holes of the different electrodes varying diameters helps widen the range. Moreover, conductors can be laid to reach the electrodes at the outer edges thereof so as not to directly face the liquid crystal layer. This helps eliminate the influence of the conductors on the electric field distribution in the liquid crystal layer.
    • 在液晶层的一侧,设置第一电极,并且在液晶层的另一侧设置有由多个单独电极构成的第二电极和第三电极。 第二和第三电极具有远离液晶层的孔越来越小。 当第三电极处的电位设定为等于或低于第二电极处的电位时,液晶层用作凸透镜; 当第三电极处的电位被设定为高于第二电极处的电位时,液晶层用作凹透镜。 焦距可以变化的范围取决于孔的直径,并且给不同电极的孔改变直径有助于扩大范围。 此外,可以铺设导体以在其外边缘处到达电极,以便不直接面对液晶层。 这有助于消除导体对液晶层中电场分布的影响。
    • 3. 发明申请
    • Optical element and optical pickup
    • 光学元件和光学拾取器
    • US20060273284A1
    • 2006-12-07
    • US11447772
    • 2006-06-06
    • Satoru Hirose
    • Satoru Hirose
    • C09K19/34
    • G02B3/14G02F1/134309G02F2001/294G11B7/1369G11B7/13925
    • On one side of a liquid crystal layer, a first electrode is provided, and, on the other side of the liquid crystal layer, a second electrode, composed of a plurality of individual electrodes, and a third electrode are provided. The second and third electrodes have holes that are increasingly small away from the liquid crystal layer. When the potential at the third electrode is set equal to or lower than the potential at the second electrode, the liquid crystal layer acts as a convex lens; when the potential at the third electrode is set higher than the potential at the second electrode, the liquid crystal layer acts as a concave lens. The range in which the focal length can be varied depends on the diameters of the holes, and giving the holes of the different electrodes varying diameters helps widen the range. Moreover, conductors can be laid to reach the electrodes at the outer edges thereof so as not to directly face the liquid crystal layer. This helps eliminate the influence of the conductors on the electric field distribution in the liquid crystal layer.
    • 在液晶层的一侧,设置第一电极,并且在液晶层的另一侧设置有由多个单独电极构成的第二电极和第三电极。 第二和第三电极具有远离液晶层的孔越来越小。 当第三电极处的电位设定为等于或低于第二电极处的电位时,液晶层用作凸透镜; 当第三电极处的电位被设定为高于第二电极处的电位时,液晶层用作凹透镜。 焦距可以变化的范围取决于孔的直径,并且给不同电极的孔改变直径有助于扩大范围。 此外,可以铺设导体以在其外边缘处到达电极,以便不直接面对液晶层。 这有助于消除导体对液晶层中电场分布的影响。