利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

151 条记录 (耗时 0.026 秒)

    Optical disc apparatus
    1.
    发明授权
    Optical disc apparatus 失效
    光盘装置

    公开(公告)号：US06667943B1

    公开(公告)日：2003-12-23

    申请号：US09553854

    申请日：2000-04-21

    申请人： Koichi Maruyama ,  Hisashi Konno ,  Suguru Takishima ,  Wataru Kubo ,  Hiroshi Nishikawa ,  Hiroshi Yamamoto

    发明人： Koichi Maruyama ,  Hisashi Konno ,  Suguru Takishima ,  Wataru Kubo ,  Hiroshi Nishikawa ,  Hiroshi Yamamoto

    IPC分类号： G11B700

    CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical disc apparatus includes a fixed portion having a light source portion and a movable portion that holds an objective lens and moves along a radial direction of an optical disc. The fixed portion includes the light source portion for selectively emitting short and long wavelength laser beams, and a collimator lens for collimating the laser beams. The objective lens includes a positive refractive lens and a diffractive lens structure formed on a surface of the refractive lens. The diffractive lens structure has wavelength dependence such that spherical aberration varies in the undercorrected direction as wavelength of incident light increases. The objective lens converges the short wavelength laser beam of a predetermined diffraction order onto an informatlon layer of a thin cover type optical disc, and converges the long wavelength laser beam of the identical diffraction order onto an information layer of a thick cover type optical disc.

    摘要翻译： 光盘装置包括具有光源部分和保持物镜并沿着光盘的径向方向移动的可动部分的固定部分。 固定部分包括用于选择性地发射短波长和长波长激光束的光源部分和用于准直激光束的准直透镜。 物镜包括形成在折射透镜的表面上的正折射透镜和衍射透镜结构。 衍射透镜结构具有波长依赖性，使得随着入射光的波长的增加，球面像差在校正不正确的方向上变化。 物镜将预定衍射级的短波长激光束会聚到薄盖型光盘的信息层上，并将相同衍射级的长波长激光束会聚到厚盖型光盘的信息层上。

    Objective lens system of an optical disk device
    2.
    发明授权
    Objective lens system of an optical disk device 失效
    物镜系统的光盘装置

    公开(公告)号：US5600494A

    公开(公告)日：1997-02-04

    申请号：US571514

    申请日：1995-12-13

    申请人： Wataru Kubo ,  Koichi Maruyama ,  Suguru Takishima

    发明人： Wataru Kubo ,  Koichi Maruyama ,  Suguru Takishima

    IPC分类号： G02B13/18 ,  G11B7/135

    CPC分类号： G11B7/1374 ,  G02B13/18 ,  G11B7/13922 ,  G11B2007/13727

    摘要： An objective lens system used in an optical system of an optical disk device. The objective lens system includes at least one lens element and converges light emitted from a light source onto a reflecting layer of an optical disk. The lens element has an offense against the sine condition OSC, and the optical disk has a substrate thickness T and a refractive index n. A ray of light exits the lens element and intersects an optical axis of the lens element at an angle .alpha.. The values of OSC, .alpha., n and T satisfy the following relationship for light rays that are incident on the objective lens system at distances from the optical axis of the objective lens system which are least equal to a predetermined percentage of an effective height of an aperture of the objective lens: ##EQU1## Accordingly, a spherical aberration of the optical system is corrected. An offense against the sine condition of only the objective lens is substantially coincident with a spherical aberration of the objective lens such that a coma of only the objective lens is corrected.

    摘要翻译： 一种用于光盘装置的光学系统的物镜系统。 物镜系统包括至少一个透镜元件，并且将从光源发射的光会聚到光盘的反射层上。 透镜元件具有针对正弦条件OSC的挑战，并且光盘具有基板厚度T和折射率n。 光线离开透镜元件并以角度α与透镜元件的光轴相交。 OSC，α，n和T的值对于距离物镜系统的光轴入射到物镜系统的光线满足以下关系：最小等于预定百分比的有效高度 物镜的孔径：因此，校正光学系统的球面像差。 仅针对物镜的正弦状态的进攻基本上与物镜的球面像差一致，使得仅修正了物镜的彗差。

    Optical disc apparatus having five light receiving areas for detecting focus error and tracking error
    4.
    发明授权
    Optical disc apparatus having five light receiving areas for detecting focus error and tracking error 失效
    具有用于检测聚焦误差和跟踪误差的五个光接收区域的光盘装置

    公开(公告)号：US5278401A

    公开(公告)日：1994-01-11

    申请号：US928408

    申请日：1992-08-12

    申请人： Suguru Takishima ,  Isao Okuda ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    发明人： Suguru Takishima ,  Isao Okuda ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    IPC分类号： G11B7/09 ,  G11B7/13 ,  G11B11/105 ,  G01J1/20 ,  G11B7/00

    CPC分类号： G11B11/10597 ,  G11B11/10576 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/131

    摘要： A signal detecting apparatus in an optical disc apparatus having an objective lens which converges light emitted from a light source onto an optical disc and a condenser lens which converges light reflected by the optical disc and transmitted through the objective lens includes first and second light receiving elements, each having a light receiving surface located before or behind a convergence point on which the light reflected from the optical disc is converged when the objective lens is in a focal position. Each of the light receiving surfaces are split into at least four light receiving areas. The signal detecting apparatus also includes a means for calculating a sum of differences of outputs of the light receiving surfaces' inner light receiving areas, calculating a sum of differences of outputs of the light receiving surfaces' outer light receiving areas, and then calculating a difference of the sums of differences, so that a track error signal is output in accordance with the difference of sums of differences calculated by the calculating means.

    摘要翻译： 在具有将从光源发射的光会聚到光盘上的物镜的光盘装置中的信号检测装置和会聚由光盘反射并透过物镜的光的聚光透镜包括第一和第二光接收元件 每个具有位于会聚点之前或之后的光接收表面，当物镜处于焦点位置时，从该光盘反射的光会聚在其上。 每个光接收表面被分成至少四个光接收区域。 信号检测装置还包括：计算受光面的内部光接收区域的输出的差的和的方式，计算受光面的外部光接收区域的输出的差的和，然后计算差 的差值之和，使得根据由计算装置计算的差值之差来输出轨道误差信号。

    Optical system for optical disc apparatus including anamorphic prisms
    5.
    发明授权
    Optical system for optical disc apparatus including anamorphic prisms 失效
    包括变形棱镜的光盘装置的光学系统

    公开(公告)号：US5477386A

    公开(公告)日：1995-12-19

    申请号：US917324

    申请日：1992-07-23

    申请人： Isao Okuda ,  Suguru Takishima ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    发明人： Isao Okuda ,  Suguru Takishima ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    IPC分类号： G02B5/04 ,  G11B7/135 ,  G02B7/18 ,  G02B13/10 ,  G02B27/10 ,  G11B7/12

    CPC分类号： G11B7/1359 ,  G02B5/04

    摘要： An optical system of an optical disc apparatus is disclosed for converging and projecting a bundle of rays emitted from a light source onto an optical disc. The optical system includes a collimating lens which collimates the bundle of rays emitted from the light source, two anamorphic prisms for shaping the cross section of the collimated bundle of rays transmitted through the collimating lens, and an objective lens which converges the bundle of rays shaped by the anamorphic prisms onto the optical disc. At least one of the anamorphic prisms is detachably mounted to an immovable body portion of the optical system.

    摘要翻译： 公开了一种光盘装置的光学系统，用于会聚和投射从光源发射的光束到光盘上。 光学系统包括准直透镜，其准直从光源发射的光束，两个变形棱镜，用于对通过准直透镜透射的准直光束的横截面进行成形;以及物镜，会聚成束状的光束 通过变形棱镜到光盘上。 至少一个变形棱镜可拆卸地安装到光学系统的不动部分。

    Pump
    6.
    发明授权
    Pump 有权
    泵

    公开(公告)号：US09494156B2

    公开(公告)日：2016-11-15

    申请号：US13522911

    申请日：2010-11-25

    申请人： Koichi Maruyama ,  Junichi Aikawa ,  Naoto Yotsugi ,  Kotaro Iwagoshi

    发明人： Koichi Maruyama ,  Junichi Aikawa ,  Naoto Yotsugi ,  Kotaro Iwagoshi

    IPC分类号： F04C25/02 ,  F04C18/344 ,  F04C28/06 ,  F04C29/02 ,  F04C28/24 ,  F04C28/28 ,  F04C29/12

    CPC分类号： F04C25/02 ,  F04C18/3441 ,  F04C28/06 ,  F04C28/24 ,  F04C28/28 ,  F04C29/02 ,  F04C29/12

    摘要： A pump that includes a pump body 10 which sucks in air from an inlet 7 and discharges the air; a hydraulic pump which pressure-feeds a lubricating oil to the pump body 10 in accordance with the driving of the pump body 10; a non-return valve 70 which is disposed in a valve accommodation portion 6 between the inlet 7 and the pump body 10 to open and close the valve accommodation portion 6; an air introduction path 19 which introduces air into a cylinder 74 of the non-return valve 70; and an air introduction valve 60 which opens the air introduction path 19 when the hydraulic pump is not operating. When the pump body 10 is stopped, the non-return valve 70 closes the inlet 7 in response to a difference in pressure between the pressure of the valve accommodation portion 6 reduced to a value equal to or less than atmospheric pressure by the operation of the pump body 10, and the pressure of the air introduced into the cylinder 74 by the opening of the air introduction valve 60 owing to the stoppage of the hydraulic pump associated with the stoppage of the pump body 10.

    摘要翻译： 一种泵，包括：泵体10，其从入口7吸入空气并排出空气; 液压泵，其根据泵体10的驱动将润滑油加压到泵体10; 止回阀70，其设置在入口7和泵体10之间的阀容纳部6中，以打开和关闭阀容纳部6; 将空气引入到止回阀70的气缸74中的空气引入路径19; 以及当液压泵不工作时打开空气导入路径19的空气导入阀60。 当泵体10停止时，止回阀70响应于阀容纳部6的压力减小到等于或小于大气压的值之间的压力差而关闭入口7，通过操作 泵体10以及由于与泵体10的停止相关联的液压泵停止而通过空气导入阀60的打开引入气缸74的空气的压力。

    Optical pick-up and objective lens for use with different types of optical discs
    8.
    发明授权
    Optical pick-up and objective lens for use with different types of optical discs 失效
    用于不同类型光盘的光学拾取和物镜

    公开(公告)号：US07430159B2

    公开(公告)日：2008-09-30

    申请号：US11036989

    申请日：2005-01-19

    申请人： Daisuke Koreeda ,  Koichi Maruyama

    发明人： Daisuke Koreeda ,  Koichi Maruyama

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/1275 ,  G11B7/1374 ,  G11B2007/0006

    摘要： There is provided an optical pick-up used for recording data to and/or reproducing data from at least three types of optical discs having at least two different thicknesses of cover layers. The optical pick-up includes light sources and an objective lens. A thickness t1 of a first optical disc, a thickness t2 of a second optical disc, and a thickness t3 of a third optical disc satisfy a relationship t1≦t2 NA3. Further, a first light beam for the first optical disc is incident on the objective lens as a converging light beam, and the second and third light beams for the second and third optical discs are incident on the objective lens as diverging light beams, respectively. Given that magnification of the objective lens is m1 when the first optical disc is used, magnification of the objective lens is m2 when the second optical disc is used, and magnification of the objective lens is m3 when the first optical disc is used, following conditions are satisfied: m1>0, m3

    摘要翻译： 提供了一种用于将数据记录到至少三种类型的具有至少两个不同厚度的覆盖层厚度的光盘中的数据的光学拾取器。 光学拾取器包括光源和物镜。 第一光盘的厚度t 1，第二光盘的厚度t 2和第三光盘的厚度t 3满足关系t 1 <= t 2 = NA 2> NA 3。 此外，用于第一光盘的第一光束作为会聚光束入射在物镜上，并且用于第二和第三光盘的第二和第三光束分别作为发散光束入射在物镜上。 假设当使用第一光盘时物镜的放大倍数为m 1，当使用第二光盘时物镜的倍率为m 2，并且当使用第一光盘时物镜的倍率为m 3 满足以下条件：m 1> 0，m 3

    Optical system for optical head
    10.
    发明授权
    Optical system for optical head 有权
    光学头光学系统

    公开(公告)号：US07158468B2

    公开(公告)日：2007-01-02

    申请号：US09962301

    申请日：2001-09-26

    申请人： Shuichi Takeuchi ,  Koichi Maruyama

    发明人： Shuichi Takeuchi ,  Koichi Maruyama

    IPC分类号： G11B7/135

    CPC分类号： G02B5/1895 ,  G02B27/0037 ,  G02B27/4238 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B2007/0006

    摘要： An optical system for an optical head of an optical disc drive is capable of using first and second discs, protective layer of the second disc being thicker than that of the first disc, a data density of the second disc being lower than that of the first disc. A light source selectively emits first and second laser beams having first and second wavelengths, respectively. An objective lens converges the first and second beams on the first and second discs, respectively. The second beam is incident on the objective lens as diverging light, and the first beam is incident on the objective lens as a beam of which degree of divergence is smaller. A diffraction lens structure is formed in the high NA exclusive area, which compensates for aberrations of a portion of the first laser beam, and causes aberrations to a portion of the second laser beam passed therethrough.

    摘要翻译： 用于光盘驱动器的光头的光学系统能够使用第一和第二光盘，第二光盘的保护层比第一光盘的保护层厚，第二光盘的数据密度低于第一光盘的数据密度 光盘。 光源分别选择性地发射具有第一和第二波长的第一和第二激光束。 物镜分别将第一和第二光束会聚在第一和第二光盘上。 第二光束作为发散光入射在物镜上，第一光束作为发散度较小的光束入射到物镜上。 在高NA专用区域中形成衍射透镜结构，其补偿第一激光束的一部分的像差，并且引起通过其中的第二激光束的一部分的像差。