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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。
    • 10. 发明申请
    • Optical pickup apparatus
    • 光拾取装置
    • US20090196149A1
    • 2009-08-06
    • US11663431
    • 2006-11-06
    • Yuichi AtarashiKohei OtaJunji HashimuraKiyono Ikenaka
    • Yuichi AtarashiKohei OtaJunji HashimuraKiyono Ikenaka
    • G11B7/00
    • G11B7/1374G11B7/08517G11B7/1275G11B7/1353G11B7/1378G11B7/13922G11B7/13925G11B7/1398G11B2007/0006G11B2007/13727
    • In order to provide an optical pickup apparatus that has a relatively simple configuration and that can carry out recording and/or reproduction of information in a s compatible manner for different optical information storage medium, the optical surface of the first objective lens OBJ1 is formed only by a refracting surface, and hence it is possible to form it at a low cost even if it is made of glass. In addition, said first objective lens OBJ1 can be designed by optimizing it for the first light flux with the wavelength λ1 and the protective substrate t1 of said first optical disk OD1. On the other hand, while the second objective lens OBJ2 is used commonly for both the first light flux with a wavelength λ1 and the second light flux with a wavelength λ2, when the protective substrate t2 of the second optical disk OD2 and the protective substrate t3 of the third optical disk OD3 are the same, there is no need to consider the difference in the thickness of the protective substrate, and hence the design is easy and it is possible to produce at a low cost.
    • 为了提供具有相对简单的配置并且可以以不同的光学信息存储介质的兼容方式进行信息的记录和/或再现的光学拾取装置,第一物镜OBJ1的光学表面仅由 折射表面,因此即使由玻璃制成也可以低成本地形成。 此外,所述第一物镜OBJ1可以通过对具有波长λ1的第一光束和所述第一光盘OD1的保护基板t1进行优化来设计。 另一方面,当第二物镜OBJ2同时用于具有波长λ1的第一光通量和波长λ2的第二光通量时,当第二光盘OD2的保护基板t2和保护基板t3 的第三光盘OD3是相同的,不需要考虑保护性基板的厚度的差异,因此设计容易,并且可以以低成本生产。