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    Optical pickup device
    21.
    发明专利
    Optical pickup device 审中-公开
    光学拾取器件

    公开(公告)号：JP2005108356A

    公开(公告)日：2005-04-21

    申请号：JP2003342317

    申请日：2003-09-30

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： NABETA RITSUKO ,  SEO KATSUHIRO ,  KATO YOSHIAKI ,  SUZUKI AKIRA ,  FUJIBAYASHI SHIGEKI ,  NAGASHIMA SHINICHI

    IPC: G02B7/02 ,  G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To reduce deviation of a spot position formed on a light receiving element caused by variation of surrounding temperature. SOLUTION: A base 17, a collimator lens holder 21, and a condenser lens holder 22 are manufactured by materials satisfying conditions indicated in a formula 1 : (α1-αb)/(α2-αb)×R1/R2×sinb/sina=1 where: α1 is collimator lens holder 21; α2 is condenser lens holder 22; ab is linear expansion coefficient of a material by which the base 17 is manufactured; R1 is a distance from a center of the collimator lens 12 to the base 17; R2 is a distance from a center of the collimator lens 12 to the base 17; F1 is an effective focal distance in the collimator lens; F2 is an effective focal distance in the condenser lens 15; a is 1/2 angle of a bottom part of a first V shape groove 17b; and b is 1/2 angle of a bottom part of a second V shape groove 17c. COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 要解决的问题：减少由周围温度的变化引起的在光接收元件上形成的光斑位置的偏差。 （α1-αb）/（α2-αb）×R1 / R2×sinb的材料制造基座17，准直透镜保持架21和聚光透镜保持架22。 / sina = 1其中：α1是准直透镜保持器21; α2是聚光透镜架22; ab是制造基座17的材料的线膨胀系数; R1是从准直透镜12的中心到基部17的距离; R2是从准直透镜12的中心到基部17的距离; F1是准直透镜中的有效焦距; F2是聚光透镜15中的有效焦距; a是第一V形槽17b的底部的1/2角; b是第二V形槽17c的底部的1/2角。 版权所有（C）2005，JPO＆NCIPI

    Variable focus lens, optical apparatus using the same, manufacturing method of variable focus lens
    25.
    发明专利
    Variable focus lens, optical apparatus using the same, manufacturing method of variable focus lens 审中-公开
    可变聚焦镜头，使用其的光学装置，变焦聚焦镜片的制造方法

    公开(公告)号：JP2006285031A

    公开(公告)日：2006-10-19

    申请号：JP2005106524

    申请日：2005-04-01

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： KATO YOSHIAKI ,  MAEDA FUMISADA

    IPC: G02B3/14

    CPC classification number: G02B3/14 ,  G02B26/005

    Abstract: PROBLEM TO BE SOLVED: To reduce a variable focus lens driving voltage, in the variable focus lens and an optical apparatus using the variable focus lens, and also, to provide a method for comparatively easily manufacturing the variable focus lens.
    SOLUTION: Regarding the variable focus lens, a conductive liquid material part 1 and an insulating liquid material part 2 are stored in a container 10, a 1st electrode 21 applying a voltage to the conductive liquid material part 1 via a dielectric layer interposed therebetween, and a 2nd electrode 24 directly comes in contact with the conductive liquid material part 1, and the dielectric layer is an anodized part 22 constituted of metal oxide formed by anodizing the 1st electrode 21.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：为了减少可变焦距透镜中的可变焦距透镜驱动电压，以及使用可变焦距透镜的光学装置，并且还提供了一种用于相对容易地制造可变焦距透镜的方法。 解决方案：关于可变焦距透镜，导电液体材料部分1和绝缘液体材料部分2存储在容器10中，第一电极21经由介电层插入到导电液体材料部分1上的电压 并且第二电极24直接与导电液体材料部分1接触，并且电介质层是由通过阳极氧化第一电极21形成的金属氧化物构成的阳极氧化部分22.PEGYRIGHT：（C）2007， JPO＆INPIT

    Optical pickup device for optical information recording medium
    26.
    发明专利
    Optical pickup device for optical information recording medium 审中-公开
    用于光信息记录介质的光学拾取装置

    公开(公告)号：JP2006012247A

    公开(公告)日：2006-01-12

    申请号：JP2004185330

    申请日：2004-06-23

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： OKAMOTO YOSHIKI ,  KATO YOSHIAKI ,  SEO KATSUHIRO

    IPC: G11B7/135

    CPC classification number: G02B26/005

    Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device for optical information recording medium having a wavefront conversion device which can adapt a configuration flexibly according to aberration to be corrected precisely. SOLUTION: In a configuration of the optical pickup device 1 for optical information recording medium, a wavefront conversion device 5 is arranged at an optical path. This wavefront conversion device is configured by filling at least a 1st light transmissive liquid 57 having conductivity and non-conductivity light transmissive liquid 58 which have different refractive indices, and are held in a liquid-tight container 5a without being mixed mutually, and it is configured so that the shape of the interface between the 1st and 2nd light transmissive liquids 57 and 58 are changed by voltage impression to the 1st light transmissive liquid 57. The versatility of shape change of interface is acquired in high accuracy by selecting shape of an electrode of applied voltage, combination state of the light transmissive liquids 57 and 58, shape of inner surfaces of the liquid-tight container, etc. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种具有波前转换装置的光学信息记录介质的光学拾取装置，其能够根据要被精确校正的像差灵活地适应配置。 解决方案：在用于光学信息记录介质的光学拾取装置1的配置中，波前转换装置5布置在光路上。 该波前转换装置通过填充至少具有导电性和非导电性的透光性液体58的第一透光性液体57，其具有不同的折射率，并且保持在液密容器5a中而不相互混合， 被配置为使得第一和第二透光液体57和58之间的界面的形状通过电压印刷而变化到第一透光液体57.通过选择电极的形状来获得界面的形状变化的多功能性 施加电压，透光液体57和58的组合状态，液密容器的内表面的形状等。（C）2006年，JPO＆NCIPI

    Optical pickup
    27.
    发明专利
    Optical pickup 审中-公开
    OPTICAL PICKUP

    公开(公告)号：JP2005327402A

    公开(公告)日：2005-11-24

    申请号：JP2004145645

    申请日：2004-05-14

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： OKAMOTO YOSHIKI ,  SEO KATSUHIRO ,  KATO YOSHIAKI ,  YONEZAWA TAKESHI

    IPC: G11B7/09 ,  G11B7/125 ,  G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To minimize a change in a transverse magnification even if correcting spherical aberration. SOLUTION: An optical pickup comprises a light source 2 for emitting a laser beam; a group of at least one coupling lens 3 for converting the angle of divergence of the laser beam emitted from the light source 2; a group of at least one objective lens 5 for condensing the incident laser beam whose angle of divergence is converted by the group of coupling lenses 3 onto the signal recording surface of an optical disk; and a light source movement means for correcting the spherical aberration by moving the light source 2 in the direction of an optical axis for contacting or separating from the group of coupling lenses 3. In this case, the distance from the main plane of the group of coupling lenses 3 to the group of objective lenses 5 becomes equal to the distance, where the focal distance of the group of coupling lenses 3 is added to that of the group of objective lenses 5. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：即使校正球面像差，也可以最小化横向放大率的变化。 光拾取器包括用于发射激光束的光源2; 一组用于转换从光源2发射的激光束的发散角的至少一个耦合透镜3; 一组至少一个物镜5，用于将通过一组耦合透镜3转换的发散角的入射激光束聚光到光盘的信号记录表面上; 以及光源移动装置，用于通过沿着光轴2的方向移动光源2来与该组耦合透镜3接触或分离来校正球面像差。在这种情况下，距离该组的主平面的距离 耦合透镜3到物镜组5的距离变得等于耦合透镜3的组的焦距被添加到该组物镜5的距离。（C）2006，JPO和NCIPI

    METHOD AND DEVICE OF ADJUSTING OBJECTIVE LENS FOR OPTICAL PICKUP
    28.
    发明专利
    METHOD AND DEVICE OF ADJUSTING OBJECTIVE LENS FOR OPTICAL PICKUP 失效

    公开(公告)号：JPH10255304A

    公开(公告)日：1998-09-25

    申请号：JP5216297

    申请日：1997-03-06

    Applicant: SONY CORP

    Inventor： MAEDA FUMISADA ,  SUZUKI AKIRA ,  KATO YOSHIAKI ,  KAI SHINICHI ,  YAMAMOTO KENJI

    IPC: G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To precisely position the second lens against the first lens in the two-group lens even in the presence of errors in the external size of the first and the second lens. SOLUTION: The adjusting device 9 of the two-group lens is equipped with the first CCD camera 77, which is positioned far from the fourth face 27 of the second lens 22 oppositely facing an optical disk and which detects a reflected light emitted from the first laser beam source 73 and reflected on the fourth face 27; with the second CCD camera 78 which detects each diffraction pattern of the light penetrating the first lens 22 and the second lens 23; and with the third CCD camera 83 which detects the spot diameter of the beam obtainable through the first lens 22 again, from the reflection of the light made incident on the third face 26 of the second lens 23 through the opposing first lens 22.

    OBJECTIVE LENS FOR OPTICAL PICKUP
    29.
    发明专利
    OBJECTIVE LENS FOR OPTICAL PICKUP 失效

    公开(公告)号：JPH10255290A

    公开(公告)日：1998-09-25

    申请号：JP5803197

    申请日：1997-03-12

    Applicant: SONY CORP

    Inventor： MAEDA FUMISADA ,  YAMAMOTO KENJI ,  KATO YOSHIAKI ,  KAI SHINICHI ,  SUZUKI AKIRA

    IPC: G11B7/09

    Abstract: PROBLEM TO BE SOLVED: To provide a double group lens which holds a distance between first and second lenses contact in a simple structure without requiring a complicate structure such as a position servo or the like and exerts sufficient stability in focus servo. SOLUTION: A double group lens 1 is constituted of a bobbin 8 engaging an outer circumferential part 3a of a second lens 3 thereby holding the second lens 3, a yoke 10 arranged at an outer circumferential part of a second face 5 of a first lens 2 providing a space part 9 to the bobbin 8, a coil 11 wound on an outer circumferential part of the bobbin 8, a magnet 12 fitted to the yoke 10 and separated from the coil 11, a spring 13 mechanically coupling the bottin 8 and the yoke 10, a viscous fluid 14 sealed in the space part 9, and a protecting material 15 disposed at an outer circumferential part of a fourth face 7 of the second lens 3.

    TRACKING CONTROLLER FOR MULTI-LAYER OPTICAL DISK
    30.
    发明专利
    TRACKING CONTROLLER FOR MULTI-LAYER OPTICAL DISK 失效

    公开(公告)号：JPH09161295A

    公开(公告)日：1997-06-20

    申请号：JP32286795

    申请日：1995-12-12

    Applicant: SONY CORP

    Inventor： FUKUMOTO ATSUSHI ,  KIMURA MOTOI ,  KATO YOSHIAKI

    IPC: G11B11/10 ,  G11B7/09 ,  G11B7/095 ,  G11B11/105

    Abstract: PROBLEM TO BE SOLVED: To attain stable tracking by eliminating an offset of a tracking error signal due to movement of a stray light spot on a photodetector face resulting from a lateral movement of an objective lens at tracking of a track and from a position deviation of the photodetector. SOLUTION: A signal of an auxiliary reflection beam detected by a photo detector 2 is converted into a voltage signal by a current voltage conversion amplifier 4 and the voltage signal is fed to an upward envelope detector 6 and a subtractor 8. The amount of a stray light due to lateral movement of an objective lens to the photo detector 2 is changed and the upper envelope detector 6 extracts the fluctuation component and the subtractor 8 eliminates it. Similarly the fluctuation component of a stray light is eliminated from a detection signal of other auxiliary reflection beam of a photo detector 3 similarly and a difference signal by a subtractor 10 is given to an LPF 11 and a tracking error signal is outputted. Thus, the offset of the tracking error signal is eliminated to attain stable track control.

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