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    • 3. 发明申请
    • Optical pickup and disk drive unit
    • 光学拾音器和磁盘驱动器
    • US20050122881A1
    • 2005-06-09
    • US10498493
    • 2003-10-07
    • Kazuma Aiki
    • Kazuma Aiki
    • G11B7/135G11B7/00G11B7/125
    • G11B7/1275G11B7/1378G11B2007/0006
    • An optical pickup and disk drive apparatus has a light-emitting device (14) having a first light emitter (14a) and a second light emitter (14b) for emitting a first laser beam and a second laser beam, respectively, a light splitter (18), a collimator lens (19) for converting the first laser beam and the second laser beam into a parallel beam, and a light-detecting device (29). The first laser beam has an optical axis aligned with the optical axis of an objective lens (13), and the second laser beam has an optical axis displaced off the optical axis of the objective lens. The second light emitter is placed in a position where the angle a of incidence of the second laser beam on the light splitter is greater than the angle θ of incidence of the first laser beam on the light splitter, for thereby reducing the amount of generated aberrations for increased performance.
    • 一种光学拾取和光盘驱动装置具有发光装置(14),其具有分别用于发射第一激光束和第二激光束的第一光发射器(14a)和第二光发射器(14b) 分离器(18),用于将第一激光束和第二激光束转换成平行光束的准直透镜(19)和光检测装置(29)。 第一激光束具有与物镜(13)的光轴对准的光轴,第二激光束具有偏离物镜的光轴的光轴。 第二光发射器被放置在光分路器上的第二激光束的入射角α大于光分路器上的第一激光束的入射角度的位置,从而减少产生的像差量 以提高性能。
    • 5. 发明授权
    • Optical pickup and disk drive unit
    • 光学拾音器和磁盘驱动器
    • US06980503B2
    • 2005-12-27
    • US10498493
    • 2003-10-07
    • Kazuma Aiki
    • Kazuma Aiki
    • G11B7/135G11B7/00G11B7/125
    • G11B7/1275G11B7/1378G11B2007/0006
    • An optical pickup and disk drive apparatus has a light-emitting device (14) having a first light emitter (14a) and a second light emitter (14b) for emitting a first laser beam and a second laser beam, respectively, a light splitter (18), a collimator lens (19) for converting the first laser beam and the second laser beam into a parallel beam, and a light-detecting device (29). The first laser beam has an optical axis aligned with the optical axis of an objective lens (13), and the second laser beam has an optical axis displaced off the optical axis of the objective lens. The second light emitter is placed in a position where the angle α of incidence of the second laser beam on the light splitter is greater than the angle θ of incidence of the first laser beam on the light splitter, for thereby reducing the amount of generated aberrations for increased performance.
    • 一种光学拾取和光盘驱动装置具有发光装置(14),其具有分别用于发射第一激光束和第二激光束的第一光发射器(14a)和第二光发射器(14b) 分离器(18),用于将第一激光束和第二激光束转换成平行光束的准直透镜(19)和光检测装置(29)。 第一激光束具有与物镜(13)的光轴对准的光轴,第二激光束具有偏离物镜的光轴的光轴。 第二光发射器被放置在光分路器上的第二激光束的入射角α大于分光器上的第一激光束的入射角度的位置,从而减少产生的像差量 以提高性能。
    • 7. 发明申请
    • Optical pickup and disk drive apparatus
    • 光学拾取和磁盘驱动装置
    • US20060013110A1
    • 2006-01-19
    • US11230473
    • 2005-09-21
    • Kazuma Aiki
    • Kazuma Aiki
    • G11B7/00
    • G11B7/1275G11B7/1378G11B2007/0006
    • An optical pickup has a light-emitting device having a first light emitter and a second light emitter which emit a first laser beam and a second laser beam, respectively, a beam splitter plate, a collimator lens which converts the first laser beam and the second laser beam into a parallel beam, and a light-detecting device. The first laser beam has an optical axis aligned with an optical axis of an objective lens, and the second laser beam has an optical axis displaced off the optical axis of the objective lens. The second light emitter is placed in a position where the angle α of incidence of the second laser beam on the beam splitter plate is greater than the angle θ of incidence of the first laser beam on the beam splitter plate, thereby reducing the amount of generated aberrations for increased performance.
    • 光拾取器具有发光器件,其具有分别发射第一激光束和第二激光束的第一发光器和第二发光器,分束板,将第一激光束和第二激光束转换的准直透镜 激光束成平行光束,以及光检测装置。 第一激光束具有与物镜的光轴对准的光轴,第二激光束具有偏离物镜的光轴的光轴。 第二光发射器被放置在分束板上的第二激光束的入射角α大于分束板上的第一激光束的入射角度的位置,从而减少产生的 畸变增加性能。
    • 8. 发明授权
    • Optical head device and information processing apparatus
    • 光头装置及信息处理装置
    • US07339877B2
    • 2008-03-04
    • US10653856
    • 2003-09-03
    • Kazuma AikiKenji Sahara
    • Kazuma AikiKenji Sahara
    • G11B7/135
    • G11B7/1275G11B7/123G11B7/1353G11B2007/0006
    • In an optical head device, a light emission source for emitting a plurality of laser beams with different wavelengths and an optical system including an objective lens and a collimator are provided. With respect to the optical system to be used in common for a plurality of optical recording media of different kinds, the RIM intensity is set to be not less than 0.1 and the magnification is set in the range of 4 to 6. With these conditions applied to the RIM intensity and the magnification of the optical system, light utilization efficiency at the time of CD recording is ensured, while preventing this from adversely affecting DVD reproduction or recording and while ensuring a beam spot quality.
    • 在光头装置中,提供了用于发射具有不同波长的多个激光束的发光源和包括物镜和准直器的光学系统。 对于不同种类的多个光记录介质共同使用的光学系统,将RIM强度设定为不小于0.1,放大倍率设定在4〜6的范围内。应用这些条件 对于RIM强度和光学系统的放大率,确保了CD记录时的光利用效率,同时防止了DVD再现或记录的不利影响以及确保光束斑点质量。