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    Aspheric lens and optical pickup including the same
    4.
    发明授权
    Aspheric lens and optical pickup including the same 有权
    非球面透镜和包括其的光学拾取器

    公开(公告)号：US08194522B2

    公开(公告)日：2012-06-05

    申请号：US12645989

    申请日：2009-12-23

    申请人： Bong-gi Kim ,  Ichiro Morishita ,  Soo-han Park ,  Joong-eon Seo

    发明人： Bong-gi Kim ,  Ichiro Morishita ,  Soo-han Park ,  Joong-eon Seo

    IPC分类号： G11B7/00

    CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

    摘要： An aspheric lens includes at least one aspheric lens surface, and an angle of inclination on the aspheric lens surface is smaller than or equal to 65°. The aspheric lens surface is given by the equation Z ⁡ ( r ) = cr 2 1 + 1 - ( 1 + K ) ⁢ c 2 ⁢ r 2 + Lr 2 + Ar 4 + Br 6 + Cr 8 + Dr 10 + Er 12 + Fr 14 + Gr 16 + Hr 18 + Jr 20 where L≠0, c is a curvature, r2=x2+y2, K is a conic integer, and L and A through J are aspheric coefficients.

    摘要翻译： 非球面透镜包括至少一个非球面透镜表面，非球面透镜表面上的倾斜角小于或等于65°。 非球面透镜表面由方程Z⁡（r）= cr 2 1 + 1 - （1 + K）c 2 r 2 + Lr 2 + Ar 4 + Br 6 + Cr 8 + Dr 10 + Er 12 + Fr 14 + Gr 16 + Hr 18 + Jr 20其中L≠0，c是曲率，r2 = x2 + y2，K是圆锥整数，L和A到J是非球面系数。

    Optical pickup apparatus
    5.
    发明授权
    Optical pickup apparatus 有权
    光拾取装置

    公开(公告)号：US07898922B2

    公开(公告)日：2011-03-01

    申请号：US11762918

    申请日：2007-06-14

    申请人： Jang Hoon Yoo ,  Ichiro Morishita ,  Soo Han Park ,  Do Hoon Nam ,  Ho Jin Yoon ,  Myoung Seok Kim

    发明人： Jang Hoon Yoo ,  Ichiro Morishita ,  Soo Han Park ,  Do Hoon Nam ,  Ho Jin Yoon ,  Myoung Seok Kim

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1356 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/1374 ,  G11B19/125 ,  G11B2007/0006

    摘要： An optical pickup apparatus includes a first objective lens having a low numerical aperture (NA) suitable for a low-density recording medium, a second objective lens having a high NA suitable for a high-density recording medium, a first light source to generate a short-wavelength optical signal to use the first and second objective lenses, a first photo-detector to receive an optical signal, which is generated from the first light source, is focused on a recording medium by the first and second objective lenses, and is then reflected from the recording medium, and a beam splitter to perform a division of the optical signal generated from the first light source, to direct some parts of the divided optical signal to the first objective lens, and to direct the other parts of the divided optical signal to the second objective lens.

    摘要翻译： 一种光学拾取装置包括具有适用于低密度记录介质的低数值孔径（NA）的第一物镜，具有适合于高密度记录介质的高NA的第二物镜，产生第一物镜的第一光源 使用第一和第二物镜的短波长光信号，从第一光源产生的用于接收光信号的第一光检测器通过第一和第二物镜聚焦在记录介质上，并且是 然后从记录介质反射，以及分束器，以执行从第一光源产生的光信号的分割，以将分割的光信号的一些部分引导到第一物镜，并将分割的其它部分引导 光信号送到第二物镜。

    OPTICAL PICKUP APPARATUS
    6.
    发明申请
    OPTICAL PICKUP APPARATUS 有权

    公开(公告)号：US20080056102A1

    公开(公告)日：2008-03-06

    申请号：US11762918

    申请日：2007-06-14

    申请人： Jang Hoon YOO ,  Ichiro Morishita ,  Soo Han Park ,  Do Hoon Nam ,  Ho Jin Yoon ,  Myoung Seok Kim

    发明人： Jang Hoon YOO ,  Ichiro Morishita ,  Soo Han Park ,  Do Hoon Nam ,  Ho Jin Yoon ,  Myoung Seok Kim

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1356 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/1374 ,  G11B19/125 ,  G11B2007/0006

    摘要： An optical pickup apparatus includes a first objective lens having a low numerical aperture (NA) suitable for a low-density recording medium, a second objective lens having a high NA suitable for a high-density recording medium, a first light source to generate a short-wavelength optical signal to use the first and second objective lenses, a first photo-detector to receive an optical signal, which is generated from the first light source, is focused on a recording medium by the first and second objective lenses, and is then reflected from the recording medium, and a beam splitter to perform a division of the optical signal generated from the first light source, to direct some parts of the divided optical signal to the first objective lens, and to direct the other parts of the divided optical signal to the second objective lens.

    摘要翻译： 一种光学拾取装置包括具有适用于低密度记录介质的低数值孔径（NA）的第一物镜，具有适合于高密度记录介质的高NA的第二物镜，产生第一物镜的第一光源 使用第一和第二物镜的短波长光信号，从第一光源产生的用于接收光信号的第一光检测器通过第一和第二物镜聚焦在记录介质上，并且是 然后从记录介质反射，以及分束器，以执行从第一光源产生的光信号的分割，以将分割的光信号的一些部分引导到第一物镜，并将分割的其它部分引导 光信号到第二物镜。

    OPTICAL BEAM FORMING APPARTUS
    7.
    发明申请
    OPTICAL BEAM FORMING APPARTUS 审中-公开
    光束形成APPARTUS

    公开(公告)号：US20110205880A1

    公开(公告)日：2011-08-25

    申请号：US13033868

    申请日：2011-02-24

    申请人： Bong-gi KIM ,  Young-man Ahn ,  Ichiro Morishita

    发明人： Bong-gi KIM ,  Young-man Ahn ,  Ichiro Morishita

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1398 ,  G11B7/0903 ,  G11B7/1365 ,  G11B7/1374

    摘要： An optical beam forming apparatus capable of forming a polarization of laser beam into an elliptic polarization includes a beam source to emit a semiconductor laser beam, a wave plate to receive the beam emitted from the beam source and to form an elliptic polarization, and a lens to focus the beam passed through the wave plate to form a beam spot on a disc.

    摘要翻译： 能够将激光束的偏振形成为椭圆偏振的光束形成装置包括发射半导体激光束的光束源，接收从光束源发射的光束并形成椭圆偏振的波片，以及透镜 以将通过波片的光束聚焦以在光盘上形成光斑。

    Optical pick-up apparatus with diffractive optical element and optical recording/reproducing apparatus having the same
    8.
    发明授权
    Optical pick-up apparatus with diffractive optical element and optical recording/reproducing apparatus having the same 有权
    具有衍射光学元件的光学拾取装置和具有其的光学记录/再现装置

    公开(公告)号：US08526286B2

    公开(公告)日：2013-09-03

    申请号：US13316085

    申请日：2011-12-09

    申请人： Seong-su Park ,  Joji Anzai ,  Yong-han Yoon ,  Jong-uk Kim ,  Ichiro Morishita

    发明人： Seong-su Park ,  Joji Anzai ,  Yong-han Yoon ,  Jong-uk Kim ,  Ichiro Morishita

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374 ,  G11B7/1353

    摘要： An optical pick-up apparatus for reproducing information recorded on an optical recording medium or recording information on the optical recording medium is provided. The optical pick-up apparatus includes a light source unit which generates beams; a diffraction element which diffracts the generated beams; and an objective lens which focuses a p order diffracted beam which is used for recording and reproducing information among a plurality of diffracted beams which are diffracted by the diffraction element on any one of a plurality of information layers which are formed on an optical recording medium. A p±1 order diffracted beam which is not used for recording and reproducing information is focused away from the plurality of information recording layers and on the surface of the optical recording medium.

    摘要翻译： 提供了一种用于再现记录在光学记录介质上的信息或在光学记录介质上记录信息的光学拾取装置。 光学拾取装置包括产生光束的光源单元; 衍射元件衍射生成的光束; 以及物镜，其将用于在通过衍射元件衍射的多个衍射光束中记录和再现信息的p阶衍射光束聚焦在形成在光学记录介质上的多个信息层中的任一个上。 不用于记录和再现信息的p±1级衍射光束从多个信息记录层和光记录介质的表面上聚焦。

    Light irradiating device, optical pickup device with the same, method of adjusting light irradiating device
    9.
    发明授权
    Light irradiating device, optical pickup device with the same, method of adjusting light irradiating device 失效
    光照射装置，光拾取装置，调光装置的方法

    公开(公告)号：US06704152B2

    公开(公告)日：2004-03-09

    申请号：US10156102

    申请日：2002-05-29

    申请人： Mitsuhiro Togashi ,  Naoki Kaiho ,  Noriyoshi Takeya ,  Ichiro Morishita

    发明人： Mitsuhiro Togashi ,  Naoki Kaiho ,  Noriyoshi Takeya ,  Ichiro Morishita

    IPC分类号： G02B702

    CPC分类号： G11B7/1378 ,  G11B7/13925 ,  G11B7/1398 ,  H01S5/005

    摘要： Disclosed herein is a light irradiating device, optical pickup device with the same, and method of adjusting the light irradiating device. The light irradiating device has a light emitting device, a lens system and a secondary lens. The lens system narrows light emitted from the light emitting device to a predetermined diameter. The secondary lens is disposed between the light emitting device and the lens system. Each of the light emitting device and the secondary lens is fixed to an arbitrary position on the optical axis while allowing the light emitting device and the secondary lens to move independently along an optical axis. According to the present invention, the light irradiating device can obtain light use efficiency and a uniform light intensity distribution required for recording/reproducing of an optical information recording medium.

    摘要翻译： 这里公开了一种光照射装置，具有该光照射装置的光学拾取装置以及调节光照射装置的方法。 光照射装置具有发光装置，透镜系统和次透镜。 透镜系统将从发光器件发射的光缩小到预定直径。 辅助透镜设置在发光器件和透镜系统之间。 发光装置和副透镜中的每一个被固定在光轴上的任意位置，同时允许发光装置和次透镜沿光轴独立地移动。 根据本发明，光照射装置可以获得光信息记录介质的记录/再现所需的光使用效率和均匀的光强度分布。

    Collimating lens for use in optical memories
    10.
    发明授权
    Collimating lens for use in optical memories 失效
    用于光学存储器的准直透镜

    公开(公告)号：US4904062A

    公开(公告)日：1990-02-27

    申请号：US321484

    申请日：1989-03-08

    申请人： Ichiro Morishita ,  Hiroko Hanzawa

    发明人： Ichiro Morishita ,  Hiroko Hanzawa

    IPC分类号： G02B13/00 ,  G02B3/00 ,  G02B13/18 ,  G02B13/24 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1372 ,  G02B13/24 ,  G02B3/00

    摘要： An improved collimating lens for use in optical memories is disclosed which comprises a first surface for receiving the incident beam which is concave, and a second surface for emitting the outgoing beam which is convex and non-spherical, characterized in that the said lens satisifies some particular conditions. If the collimating lens of the present invention is used, the beam passing through the periphery of the lens can be concentrated, and therefore, the actual number of openings of the objective lens is increased, and at the same time, the coupling efficiency can be improved. Accordingly it is possible to form very tiny spot on the disc, and the transmission rate can also be improved. Further, the appearance of the lens can be favorably shaped when manufacturing the lens, because the lens of the present invention is strong against the difference of the axes.

    摘要翻译： 公开了一种用于光学存储器的改进的准直透镜，其包括用于接收凹入的入射光束的第一表面和用于发射凸出和非球形的输出光束的第二表面，其特征在于，所述透镜满足一些 特殊条件。 如果使用本发明的准直透镜，则可以集中透过透镜周边的光束，因此物镜的实际开口数量增加，同时耦合效率可以 改进。 因此，可以在盘上形成非常微小的斑点，并且还可以提高透射率。 此外，由于本发明的透镜相对于轴的差异强，所以在制造透镜时能够使透镜的外观成形。