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    • 21. 发明申请
    • Method and device for detecting optical data and reading-writing apparatus for optical data
    • 用于光学数据检测的方法和装置以及用于光学数据的读写装置
    • US20050094511A1
    • 2005-05-05
    • US11001045
    • 2004-12-02
    • Takashi Nakao
    • Takashi Nakao
    • G11B7/09G11B7/13G11B7/135G11B11/105G11B7/00
    • G11B7/131G11B7/0901G11B7/0908G11B7/0943G11B7/1353G11B7/1356G11B7/1381G11B11/10532G11B11/10576
    • Light from a light source is applied to a diffraction grating via a collimator lens. The light diffracted by the diffraction grating is applied to a polarization beam splitter. The light polarized by the polarization beam splitter at a given polarizing plane is transmitted and is applied to a recording surface of an optical disc via a ¼-wave plate and an objective lens. The light reflected from the recording surface of the optical disc is applied to the polarization beam splitter via the objective lens and the ¼-wave plate and is reflected by the polarization beam splitter toward a focusing lens. The light incident to the focusing lens is thereby condensed and is applied to a holographic element which diffracts the light and disposes the focal points of the ±1 diffraction orders to be offset from each other along the optical axis of the zeroth diffraction order with the focal point of the zeroth diffraction order being between the focal points of the ±1 diffraction orders. The diffracted light is applied to a photo-detector via an optical clement, for example, a flat plate disposed to be inclined with respect to the optical axis, for increasing the diameter of the diffracted light in a given direction.
    • 来自光源的光通过准直透镜施加到衍射光栅。 由衍射光栅衍射的光被施加到偏振分束器。 通过偏振分束器在给定的偏振平面处偏振的光被透射并经由1/4波片和物镜施加到光盘的记录表面。 从光盘的记录表面反射的光通过物镜和1/4波片被施加到偏振分束器,并被偏振分束器反射到聚焦透镜。 入射到聚焦透镜的光由此被冷凝,并被施加到衍射光的全息元件,并将±1个衍射级的焦点沿着零点衍射级的光轴彼此偏移,其焦点 零级衍射级的点在±1个衍射级的焦点之间。 衍射光通过光学元件(例如设置成相对于光轴倾斜的平板)被施加到光检测器,用于增加沿给定方向的衍射光的直径。
    • 28. 发明授权
    • Object form division method and system
    • 对象形式划分方法和系统
    • US5664064A
    • 1997-09-02
    • US379959
    • 1995-01-27
    • Takashi NakaoAkira MaedaMasayuki NoguchiTaiichi KadounoAtsushi SuzukiEiji Suzuki
    • Takashi NakaoAkira MaedaMasayuki NoguchiTaiichi KadounoAtsushi SuzukiEiji Suzuki
    • G06N3/12G06T17/20G06F15/18
    • G06N3/126G06T17/20
    • A system for automatically dividing the form of an object to be analyzed using a finite element method, etc., into meshes, includes initial group generation means for generating a plurality of area division forms based on the form of the analysis object input through input means, and area division form evaluation means the generated area division forms. If the evaluation result does not satisfy a predetermined determination criterion, end determination means starts selection and crossover means for generating a new group and further starts mutation means for deforming the area division forms of the new group, then again starts the area division form evaluation means. If the evaluation result satisfies the predetermined determination criterion, an optimum area division form in the group is adopted as the optimum area division form. Division-into-meshes means subdivides the optimum area division form into meshes. The result of subdividing into the meshes is output to mesh output means. A method for automatically dividing the form of an object to be analyzed using a finite element method is also disclosed.
    • 一种用于使用有限元方法等将要分析的对象的形式自动划分为网格的系统包括:初始组生成装置,用于基于通过输入装置输入的分析对象的形式生成多个区域划分形式 ,区域划分形式评估是指生成区域划分形式。 如果评价结果不满足规定的判定基准,则结束判定单元开始生成新组的选择和交叉单元,进一步开始使新组的区域分割形式变形的变形单元,再次开始区域划分形式评价单元 。 如果评价结果满足规定的判定基准,则采用该组中的最佳区域划分形式作为最佳区域划分形式。 分割网格意味着将最佳区域划分形式细分为网格。 细分为网格的结果输出到网格输出装置。 还公开了一种使用有限元法自动分割待分析对象的形式的方法。