公开(公告)号：DE602005023685D1

公开(公告)日：2010-11-04

申请号：DE602005023685

申请日：2005-04-26

Applicant: PANASONIC CORP

Inventor： TANAKA TOSHIYASU ,  KOMMA YOSHIAKI ,  SANO KOUSEI ,  ARAI AKIHIRO

IPC: G02B3/00 ,  G02B3/06 ,  G02B5/04 ,  G02B7/02 ,  G11B7/135 ,  G11B7/22

公开(公告)号：EP1993092A4

公开(公告)日：2009-04-01

申请号：EP07707245

申请日：2007-01-23

Applicant: PANASONIC CORP

Inventor： MATSUZAKI KEIICHI ,  KOMMA YOSHIAKI ,  TANAKA TOSHIYASU ,  SANO KOUSEI ,  WAKABAYASHI KANJI ,  WADA HIDENORI

IPC: G11B7/135

CPC classification number: G11B7/1353 ,  G11B7/1362 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0013

Abstract: A small optical pickup having a wide correction range of spherical aberration. The optical pickup comprises a rising mirror (4) for deflecting a light beam approximately perpendicularly and leading it toward the plane of incidence of an objective lens, a spherical aberration correction lens (2) having a curvature larger on one side than on the other side, a lens holder (9) for holding the spherical aberration correction lens (2) such that the plane of larger curvature projects partially to the rising mirror side, guide members (11, 42, 72) extending in the direction of optical axis (L) of a spherical aberration correction lens (s) and having an end arranged up to the side of the plane of reflection of the rising mirror (4), and portions (15, 36, 16d) sliding along the guide members (11, 42, 72). The projecting portions of the sliding portions (15, 36, 16d) are arranged to be confined in the side face of the reflective plane of the rising mirror (4), and when the spherical aberration correction lens (2) most closely approaches the rising mirror (4), the portion of the spherical aberration correction lens projecting from the lens holder overlaps the reflective plane of the rising mirror (4).

公开(公告)号：JP2013257921A

公开(公告)日：2013-12-26

申请号：JP2012132464

申请日：2012-06-12

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： MATSUMIYA HIROAKI ,  TANAKA TOSHIYASU ,  YAMASAKI FUMITOMO ,  MOMOO KAZUO ,  KANEUMA YOSHIAKI

IPC: G11B7/135 ,  G11B7/09

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized and inexpensive optical pickup device capable of enhancing efficiency for light utilization even by using a low-cost optical component in an optical pickup having three light sources including a multi-laser light source capable reproduction of a plurality of optical disks.SOLUTION: A second light source 100d and a third light source 100c of a multi-laser light source 100 are arranged side by side almost perpendicularly to recording surfaces of optical disks by arranging the second light source 100d and the third light source 100c in a direction along a Y-axis in a figure, and a photodetector 103 detects reflected light from the respective optical disks.

Abstract translation: 要解决的问题：为了提供一种即使在具有三个光源的光学拾取器中使用低成本光学部件也能够提高光利用效率的小型且廉价的光学拾取装置，该光学拾取器包括能够再生的多激光光源 多个光盘。解决方案：通过布置第二光源100d和第三光源100d，多激光光源100的第二光源100d和第三光源100c几乎垂直于光盘的记录表面并排布置 光源100c沿着图中的Y轴方向，光电检测器103检测来自各个光盘的反射光。

公开(公告)号：JP2012209009A

公开(公告)日：2012-10-25

申请号：JP2012048058

申请日：2012-03-05

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TERAHARA NORIAKI ,  HATANAKA SHINSUKE ,  TANAKA TOSHIYASU ,  OTA TAKESHI ,  YAMASAKI FUMITOMO

IPC: G11B7/12

CPC classification number: G11B7/121

Abstract: PROBLEM TO BE SOLVED: To prevent an optical disk from colliding with an effective region of an objective lens while achieving miniaturization and to provide an optical pickup capable of efficiently removing stains of the objective lens while preventing such a collision.SOLUTION: The optical pickup of the present invention includes a lens holder, the objective lens provided in the lens holder to have an effective region for focusing light from a light source and an edge located outside the effective region, and a lens protector provided in the lens holder. The lens protector protrudes toward an optical disk more than the objective lens. The edge of the objective lens has a protrusion protruding toward the optical disk. The top of the effective region of the objective lens protrudes toward the optical disk more than the protrusion of the edge. A straight line obtained by connecting a part of the edge of the objective lens and a part of the lens protector is located closer to the optical disk than to the top of the effective region of the objective lens.

Abstract translation: 要解决的问题：为了防止光盘在实现小型化的同时与物镜的有效区域碰撞，并且提供能够有效地去除物镜的污渍同时防止这种碰撞的光学拾取器。 解决方案：本发明的光学拾取器包括：透镜保持器，设置在透镜保持器中的物镜具有用于聚焦来自光源的光的有效区域和位于有效区域外部的边缘;以及透镜保护器 设在镜头架上。 镜头保护器比物镜更向外突出。 物镜的边缘具有向光盘突出的突起。 物镜的有效区域的顶部比边缘的突出部朝向光盘突出。 通过连接物镜的一部分和透镜保护器的一部分而获得的直线位于比物镜的有效区域的顶部更靠近光盘的位置。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012053978A

公开(公告)日：2012-03-15

申请号：JP2011246264

申请日：2011-11-10

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： KANEUMA YOSHIAKI ,  WAKABAYASHI KANJI ,  SANO AKIMASA ,  TANAKA TOSHIYASU ,  MATSUZAKI KEIICHI ,  WADA HIDEHIKO

IPC: G11B7/09 ,  G11B7/12 ,  G11B7/135

CPC classification number: G11B7/1374 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup that is applicable to plural optical disks having different recording densities and does not easily cause resonance.SOLUTION: An optical pickup includes: two objective lenses 301 and 302; a support body 303 for supporting the two objective lenses; and an actuator for driving the support body in a focusing direction perpendicular to an optical disk and in a tracking direction that is a radial direction of the optical disk. An optical axis interval between the two objective lenses is configured to be 5 mm or less. Focusing drive coils 304a and 304b of the objective lens actuator are placed at two substantially symmetric positions with respect to an axis parallel to the focusing direction including the centroid of a movable part of the objective lens actuator, on each of both end faces of the support body 303 perpendicular to a tangential direction of the optical disk.

Abstract translation: 要解决的问题：提供可应用于具有不同记录密度并且不容易引起共振的多个光盘的光学拾取器。 光拾取器包括：两个物镜301和302; 用于支撑两个物镜的支撑体303; 以及用于沿垂直于光盘的聚焦方向和作为光盘的径向方向的跟踪方向驱动支撑体的致动器。 两个物镜之间的光轴间隔被配置为5mm或更小。 将物镜驱动器的驱动线圈304a和304b的聚焦相对于包括物镜驱动器的可移动部分的重心的聚焦方向的平行轴线放置在支撑件的两个端面的两个基本上对称的位置 主体303垂直于光盘的切线方向。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011150786A

公开(公告)日：2011-08-04

申请号：JP2011106278

申请日：2011-05-11

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： KANEUMA YOSHIAKI ,  TANAKA TOSHIYASU ,  YAMASAKI FUMITOMO

IPC: G11B7/135

CPC classification number: G11B7/1374 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To use a serration diffraction element that records or reproduces conventional optical disks such as a DVD or CD in an optical head device that records or reproduces a high density optical disk using an objective lens with a large of NA (numerical aperture). SOLUTION: Steps, which are equal to or more than one wavelength in optical length for blue light but that are shorter than one wavelength in optical length for red and infrared lights, are used to provide the blue light with a function reverse to the one provided to the red and infrared lights. An effect that makes a working distance large for the CD and DVD achieves compatibility. The optical element is integrated with the objective lens so as to carry out a tracking servo sequence. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：使用在使用具有大的NA的物镜记录或再现高密度光盘的光学头装置中记录或再现诸如DVD或CD的常规光盘的锯齿衍射元件 （数值孔径）。

解决方案：用于蓝光的光学长度中等于或大于一个波长但对于红色和红外光的光学长度短于一个波长的步骤用于为蓝光提供与之相反的功能 一个提供给红色和红外灯。 使CD和DVD的工作距离大的效果实现了兼容性。 光学元件与物镜集成，以便执行跟踪伺服序列。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010250882A

公开(公告)日：2010-11-04

申请号：JP2009097853

申请日：2009-04-14

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA TOSHIYASU ,  ANZAI JOJI ,  TOMITA HIROTOSHI ,  KAJINO OSAMU

IPC: G11B7/22

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device which stably keeps the position of a photodetection element by a configuration which prevents reliability of an optical pickup from being reduced while enabling adjustment of a plurality of axes of the photodetection element.
SOLUTION: The optical pickup is provided with: an optical base; a light source which is formed on the optical base and emits a light beam; the photodetection element for photodetecting a light beam reflected by an optical disk; and first and second flexible printed boards which are connected to the photodetection elements and at least one of which transmits electric signals output from the photodetection element. The first and second flexible printed boards each have at least one bending part. The first flexible printed board is stretched in the direction of one side surface of the optical base, and the second flexible printed board is stretched to another side surface of the optical base facing the side surface.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种光拾取装置，其通过防止光学拾取器的可靠性降低的构造来稳定地保持光电检测元件的位置，同时能够调节光电检测元件的多个轴。 光拾取器设有：光学基座; 光源，其形成在光学基座上并发射光束; 光检测元件，用于光检测由光盘反射的光束; 以及连接到光检测元件的第一和第二柔性印刷电路板，并且其中至少一个传输从光电检测元件输出的电信号。 第一和第二柔性印刷电路板各自具有至少一个弯曲部分。 第一柔性印刷电路板沿着光学基座的一个侧面的方向被拉伸，并且第二柔性印刷电路板被拉伸到面向侧表面的光学基底的另一个侧表面。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2015005318A

公开(公告)日：2015-01-08

申请号：JP2013130873

申请日：2013-06-21

Applicant: パナソニック株式会社 ,  Panasonic Corp

Inventor： SANO AKIMASA ,  KANEUMA YOSHIAKI ,  YAMASAKI FUMITOMO ,  WAKABAYASHI KANJI ,  TANAKA TOSHIYASU

IPC: G11B7/135 ,  G11B7/09

Abstract: 【課題】溝間隔が異なる情報記録媒体からトラッキング誤差信号を得る際、トラッキング誤差信号が小さくなる。【解決手段】回折光学系で回折された領域の光ビームからの信号のみでなく、回折光学系を等化した光ビームからの信号を使用してトラッキング誤差信号を生成し、溝間隔が異なる光ディスクに対して、演算を切り替える。更に回折光学系の中央に遮光部を設け、中央付近の領域の光ビームを演算に用いないことで、溝間隔のばらつきや記録境界で発生するトラッキング誤差信号のオフセットを低減することに有効である。【選択図】図4

Abstract translation: 要解决的问题：为了解决跟踪误差信号变小的问题，同时从具有不同槽间距的信息记录介质获取跟踪误差信号。解决方案：通过不仅使用来自光束的信号来产生跟踪误差信号 在衍射光学系统中衍射的面积，以及来自均匀衍射光学系统中的光束的信号，并且对于具有不同凹槽间距的光盘，计算改变。 通过在衍射光学系统的中心设置遮光部分，防止中心区域的光束被用于计算。 由此，有效地减少了在记录边界中产生的槽间距变化和跟踪误差信号偏移。

公开(公告)号：JP2011165224A

公开(公告)日：2011-08-25

申请号：JP2008144487

申请日：2008-06-02

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA TOSHIYASU ,  YAMASAKI FUMITOMO ,  KANEUMA YOSHIAKI ,  WAKABAYASHI KANJI

IPC: G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1275 ,  G11B7/0956 ,  G11B7/1367 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To provide a compact and inexpensive optical pickup by reducing the number of parts in an optical pickup capable of recording or reproducing a high density optical disk using a blue-violet laser light source, and to provide an optical disk device. SOLUTION: The movable length L of a coupling lens actuator, that is, the traveling range of a coupling lens is between the position of the coupling lens when recording or reproducing a DVD and the position of the coupling lens when recording or reproducing a CD. The traveling range of the coupling lens for correcting the spherical aberrations according to the thickness of the protective substrate of the information recording surface in the BD falls in the traveling range L of the coupling lens actuator. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 解决的问题：为了通过减少能够使用蓝紫色激光光源记录或再现高密度光盘的光学拾取器中的部件的数量来提供紧凑且廉价的光学拾取器，并且提供光学 磁盘设备。 解决方案：耦合透镜致动器的可移动长度L，即耦合透镜的行进范围在记录或再现DVD时耦合透镜的位置和当记录或再现时耦合透镜的位置之间 一张CD。 用于根据BD中的信息记录表面的保护基板的厚度校正球面像差的耦合透镜的行进范围落在耦合透镜致动器的行进范围L内。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009199709A

公开(公告)日：2009-09-03

申请号：JP2009007786

申请日：2009-01-16

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： KANEUMA YOSHIAKI ,  YAMASAKI FUMITOMO ,  TANAKA TOSHIYASU ,  WAKABAYASHI KANJI

IPC: G11B7/125 ,  G11B7/09

CPC classification number: G11B7/1378 ,  G11B7/13925

Abstract: PROBLEM TO BE SOLVED: To stably correct spherical aberration in order to achieve an inexpensive optical disk system which uses an objective lens of high numerical aperture composed of resin having the refractive index changed by temperature change. SOLUTION: An optical disk drive 167 is disclosed which is provided with: an optical head device 155 comprising a laser beam source 1, a condensing optical system for converging a laser beam projected from the laser beam source on an optical disk, a photodetector 33 receiving reflected light reflected by the optical disk and an aberration correction optical system controlling aberration of the condensing optical system; a motor 164 rotating the optical disk; and a control part receiving a signal from the photodetector, wherein the condensing optical system has an objective lens 14 made of resin as main material, the aberration correcting optical system has a spherical aberration correcting element 8 correcting spherical aberration, the control part evaluates quality of reproduced signal of information of the optical disk from the reflected light received by the photodetector, and closed-loop-controls the spherical aberration correcting element utilizing the evaluation result. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了稳定地校正球面像差，以实现使用由具有由温度变化而改变的折射率的树脂构成的高数值孔径的物镜的便宜的光盘系统。 解决方案：公开了一种光盘驱动器167，其设置有：光学头装置155，其包括激光束源1，用于将从激光束源投影的激光束会聚在光盘上的聚光光学系统， 光接收器33接收由光盘反射的反射光;以及像差校正光学系统，控制会聚光学系统的像差; 旋转光盘的马达164; 以及控制部，其接收来自所述光电检测器的信号，其中所述聚光光学系统具有由树脂作为主要材料的物镜14，所述像差校正光学系统具有校正球面像差的球面像差校正元件8，所述控制部分评估质量 由光电检测器接收的反射光再现信号信息，并利用评估结果闭环控制球面像差校正元件。 版权所有（C）2009，JPO＆INPIT