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    • 1. 发明授权
    • Optical pickup device and objective lens for the optical pickup device
    • 用于光学拾取装置的光学拾取装置和物镜
    • US07193954B2
    • 2007-03-20
    • US10805730
    • 2004-03-22
    • Katsuya YagiYuichi AtarashiTohru KimuraKiyono Ikenaka
    • Katsuya YagiYuichi AtarashiTohru KimuraKiyono Ikenaka
    • G11B7/00
    • G11B7/1378G11B7/1275G11B7/1353G11B7/13922G11B7/13925G11B2007/0006G11B2007/13727
    • An optical pickup apparatus includes first, second and third light sources; a light converging optical system including a first objective optical element and a second objective optical element, wherein the first objective optical element converges the light flux emitted from the first light source on a first information recording surface, the second objective optical element converges the light flux emitted from the third light source on a third information recording surface, and the first objective optical element or the second objective optical element converges the light flux emitted from the second light source on a second information recording surface; a lens holder holding the first objective optical element and the second objective element therein; and a chromatic aberration correcting element which corrects a chromatic aberration caused by a wavelength variation in a light flux emitted by the first light source.
    • 光拾取装置包括第一,第二和第三光源; 包括第一物镜光学元件和第二物镜光学元件的聚光光学系统,其中所述第一物镜光学元件将从所述第一光源发射的光束会聚在第一信息记录表面上,所述第二物镜光学元件会聚所述光通量 并且所述第一物镜光学元件或所述第二物镜光学元件将从所述第二光源射出的光束会聚在第二信息记录面上, 保持所述第一物镜光学元件和所述第二物镜元件的透镜保持器; 以及色差校正元件,其校正由第一光源发射的光束中的波长变化引起的色差。
    • 2. 发明授权
    • Optical pickup apparatus and objective optical element
    • 光学拾取装置和物镜光学元件
    • US07957231B2
    • 2011-06-07
    • US12533070
    • 2009-07-31
    • Tohru KimuraYuichi AtarashiKiyono IkenakaKenji OgiwaraEiji Nomura
    • Tohru KimuraYuichi AtarashiKiyono IkenakaKenji OgiwaraEiji Nomura
    • G11B7/00
    • G11B7/1367G11B7/1275G11B7/1374G11B7/1376G11B7/13925G11B2007/0006
    • A light flux from the first light source forms a converged spot on first optical information recording medium by only a refraction action of the aspheric surface, or by a combination of the refraction action and an optical action given by at least one of the first phase structure and the second phase structure, a light flux from the second light source forms a converged spot on second optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure, and a light flux from the third light source forms a converged spot on third optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure.
    • 来自第一光源的光束仅通过非球面的折射作用或通过由第一相结构中的至少一个给出的折射作用和光学作用的组合在第一光学信息记录介质上形成会聚点 和第二相结构,来自第二光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第二光学记录介质上形成会聚点 第二相结构,并且来自第三光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第三光学记录介质上形成会聚点 相结构。
    • 4. 发明授权
    • Optical pickup apparatus and objective optical element
    • 光学拾取装置和物镜光学元件
    • US07821904B2
    • 2010-10-26
    • US11222137
    • 2005-09-09
    • Tohru KimuraYuichi AtarashiKiyono IkenakaKenji OgiwaraEiji Nomura
    • Tohru KimuraYuichi AtarashiKiyono IkenakaKenji OgiwaraEiji Nomura
    • G11B7/00
    • G11B7/1367G11B7/1275G11B7/1374G11B7/1376G11B7/13925G11B2007/0006
    • A light flux from the first light source forms a converged spot on first optical information recording medium by only a refraction action of the aspheric surface, or by a combination of the refraction action and an optical action given by at least one of the first phase structure and the second phase structure, a light flux from the second light source forms a converged spot on second optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure, and a light flux from the third light source forms a converged spot on third optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure.
    • 来自第一光源的光束仅通过非球面的折射作用或通过由第一相结构中的至少一个给出的折射作用和光学作用的组合在第一光学信息记录介质上形成会聚点 和第二相结构,来自第二光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第二光学记录介质上形成会聚点 第二相结构,并且来自第三光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第三光学记录介质上形成会聚点 相结构。