会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 72. 发明授权
    • Optical system for image projection and image projection apparatus including a polarization beam splitting surface
    • 用于图像投影的光学系统和包括偏振光束分离表面的图像投影设备
    • US07976166B2
    • 2011-07-12
    • US11759550
    • 2007-06-07
    • Atsushi OkuyamaYu YamauchiTakashi SudoRyota Kadowaki
    • Atsushi OkuyamaYu YamauchiTakashi SudoRyota Kadowaki
    • G03B21/14G03B21/26
    • G02B27/283G03B21/14G03B21/2073G03B21/208H04N9/3152
    • An optical system for image projection is disclosed which is capable of improving contrast while suppressing reduction of light amount. The optical system includes a converging optical system, and a polarization beam splitting surface transmitting an incoming light flux having a first polarization direction from the converging optical system, to introduce it to the image-forming element and causing light having a second polarization direction, of an outgoing light flux from the image-forming element, to proceed to a projection optical system. In a first cross-section parallel to a normal to the polarization beam splitting surface, the converging optical system has a configuration causing an incident angle on the splitting surface of a light ray passing through a barycenter of intensity distribution of the outgoing light flux to be larger than an incident angle thereon of a light ray passing through a barycenter of intensity distribution of the incoming light flux.
    • 公开了一种用于图像投影的光学系统,其能够在抑制光量减少的同时改善对比度。 光学系统包括会聚光学系统和偏振光束分离表面,透射来自会聚光学系统的具有第一偏振方向的入射光束,将其引入图像形成元件并使具有第二偏振方向的光具有 来自图像形成元件的输出光束,以前进到投影光学系统。 在与偏振光束分离面的法线平行的第一截面中,会聚光学系统具有使通过出射光束的强度分布的重心的光线的分离面的入射角为 大于通过入射光束的强度分布的重心的光线的入射角。
    • 76. 发明授权
    • Zoom lens and image display apparatus including the zoom lens
    • 包括变焦镜头的变焦镜头和图像显示装置
    • US07215477B2
    • 2007-05-08
    • US11076535
    • 2005-03-09
    • Shinji YamasakiTakashi Sudo
    • Shinji YamasakiTakashi Sudo
    • G02B15/14
    • G02B15/14G02B7/028G02B13/16
    • Provided is a projection lens, including: a plurality of moving lens units that move on an optical axis for zooming; and a plurality of plastic lenses containing plastic, in which when a focal distance of an i-th positive lens from a predetermined plane side of N positive lenses of the plurality of plastic lenses is given by fpi, a focal distance of a j-th negative lens from the predetermined plane side of M negative lenses of the plurality of plastic lenses is given by fnj, and fp and fn are defined by 1 fp = ∑ i = 1 N ⁢ 1 fpi 1 fn = ∑ j = 1 M ⁢ 1 fnj (N and M each are a natural number, that is, an integer equal to or larger than 1), −0.56
    • 提供一种投影透镜,包括:多个移动透镜单元,其在光轴上移动以进行变焦; 以及多个塑料透镜,其中当第i个正透镜与多个塑料透镜的N个正透镜的预定平面侧的焦距由fpi给出时,第j个焦点 多个塑料透镜的M个负透镜的预定平面侧的负透镜由fnj给出,fp和fn由 1 fp = 1 fpi 1 fn = < / MO> Σ j = 1 > M 1 fnj (N和M分别为自然数,也就是1以上的整数),满足-0.56
        • 77. 发明申请
        • Zoom lens and image display apparatus including the zoom lens
        • 包括变焦镜头的变焦镜头和图像显示装置
        • US20050200967A1
        • 2005-09-15
        • US11076535
        • 2005-03-09
        • Shinji YamasakiTakashi Sudo
        • Shinji YamasakiTakashi Sudo
        • G02B13/16G02B15/14H04N9/31
        • G02B15/14G02B7/028G02B13/16
        • Provided is a projection lens, including: a plurality of moving lens units that move on an optical axis for zooming; and a plurality of plastic lenses containing plastic, in which when a focal distance of an i-th positive lens from a predetermined plane side of N positive lenses of the plurality of plastic lenses is given by fpi, a focal distance of a j-th negative lens from the predetermined plane side of M negative lenses of the plurality of plastic lenses is given by fnj, and fp and fn are defined by 1 fp = ∑ i = 1 N ⁢ 1 fpi 1 fn = ∑ j = 1 M ⁢ 1 fnj (N and M each are a natural number, that is, an integer equal to or larger than 1), −0.56
        • 提供一种投影透镜,包括:多个移动透镜单元,其在光轴上移动以进行变焦; 以及多个塑料透镜,其中当第i个正透镜与多个塑料透镜的N个正透镜的预定平面侧的焦距由fpi给出时,第j个焦点 多个塑料透镜的M个负透镜的预定平面侧的负透镜由fnj给出,并且fp和fn由 1 fp = 1 fpi 1 fn = < / MO> Σ j = 1 > M 1 fnj