利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

68 条记录 (耗时 0.025 秒)

    OBJECTIVE LENS, OPTICAL PICKUP DEVICE, AND OPTICAL RECORDING/REPRODUCING APPARATUS
    1.
    发明申请
    OBJECTIVE LENS, OPTICAL PICKUP DEVICE, AND OPTICAL RECORDING/REPRODUCING APPARATUS 失效
    目标镜头，光学拾取装置和光学记录/再现装置

    公开(公告)号：US20090285078A1

    公开(公告)日：2009-11-19

    申请号：US12466465

    申请日：2009-05-15

    申请人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

    发明人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

    IPC分类号： G11B7/135 ,  G02B13/18

    CPC分类号： G02B3/04 ,  G11B7/1374

    摘要： An objective lens for converging light emitted from a light source onto an optical recording medium to record and reproduce information consists of a single lens that has at least one aspheric surface. The following conditional expressions (1) and (2) are satisfied: −0.90

    摘要翻译： 用于将从光源发射的光会聚到光学记录介质上以记录和再现信息的物镜由具有至少一个非球面的单个透镜组成。 满足以下条件表达式（1）和（2）：-0.90R1 / R2 0.70d / f其中R1表示光轴附近的光源侧表面的曲率半径（mm），R2表示曲率半径 （mm），d表示光轴上的厚度（mm），f表示焦距（mm）。

    OBJECTIVE LENS, OPTICAL PICKUP DEVICE HAVING THE SAME, AND RECORDING AND/OR REPRODUCING APPARATUS FOR OPTICAL RECORDING MEDIUM, EQUIPPED WITH THE OPTICAL PICKUP DEVICE
    2.
    发明申请
    OBJECTIVE LENS, OPTICAL PICKUP DEVICE HAVING THE SAME, AND RECORDING AND/OR REPRODUCING APPARATUS FOR OPTICAL RECORDING MEDIUM, EQUIPPED WITH THE OPTICAL PICKUP DEVICE 审中-公开
    目标镜头，具有该光学拾取装置的光学拾取装置，以及配备有光学拾取装置的光记录介质的记录和/或再现装置

    公开(公告)号：US20090129242A1

    公开(公告)日：2009-05-21

    申请号：US12273193

    申请日：2008-11-18

    申请人： Toshiaki KATSUMA ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

    发明人： Toshiaki KATSUMA ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374

    摘要： An objective lens 8 consists of a single lens element. A light source side surface 8a is formed into a convex surface having a large curvature, and an optical recording medium side surface 8b has a small curvature. Also, the objective lens satisfies the following expressions (1) and (2) ΦA/ΦB

    摘要翻译： 物镜8由单个透镜元件组成。 光源侧表面8a形成为具有大曲率的凸表面，并且光记录介质侧表面8b具有小曲率。 此外，物镜满足以下表达式（1）和（2）<？in-line-formula description =“In-line formula”end =“lead”？> PhiA / PhiB <5.0（1）<？ line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 7.69 <= PhiA / PhiB + 19.33xbf' /f'<=9.45（2）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中PhiA表示物镜的光源侧表面的有效直径（mm） 如图8所示，PhiB表示物镜8的光记录介质侧面的有效直径（mm），bf'表示物镜8的后焦距（mm），f'表示物镜8的焦距（mm） 物镜8。

    Objective lens for different optical recording media and an optical pickup device utilizing it
    3.
    发明授权
    Objective lens for different optical recording media and an optical pickup device utilizing it 失效
    用于不同光学记录介质的物镜和利用它的光学拾取装置

    公开(公告)号：US07266070B2

    公开(公告)日：2007-09-04

    申请号：US10808301

    申请日：2004-03-25

    申请人： Yu Kitahara ,  Tetsuya Ori ,  Toshiaki Katsuma

    发明人： Yu Kitahara ,  Tetsuya Ori ,  Toshiaki Katsuma

    IPC分类号： G11B7/00

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

    摘要： An objective lens and an optical pickup device utilizing it are disclosed wherein the objective lens includes a specified aspheric surface profile having a discontinuity and a single specified diffraction optical surface so to provide a focusing effect which is usable with different optical recording media, such as a CD versus a DVD. By providing a single diffraction surface and an aspheric surface having a discontinuity, more freedom of design is achieved for the diffraction surface than would otherwise be possible. The objective lens according to the invention is designed so as to be both compact and inexpensive and enables recording/playback onto either type optical recording media using different wavelengths and different numerical apertures, depending on the recording medium used.

    摘要翻译： 公开了一种使用它的物镜和光学拾取装置，其中物镜包括具有不连续性和单个特定衍射光学表面的特定的非球面表面轮廓，从而提供可用于不同光学记录介质的聚焦效果，例如 CD与DVD。 通过提供具有不连续性的单个衍射表面和非球面表面，对于衍射表面实现了比否则可能更大的设计自由度。 根据本发明的物镜被设计为既紧凑又廉价，并且根据所使用的记录介质，能够使用不同波长和不同数值孔径对任一类型的光记录介质进行记录/重放。

    Objective optical system for optical recording media and optical pickup device using the objective optical system
    4.
    发明申请
    Objective optical system for optical recording media and optical pickup device using the objective optical system 审中-公开
    用于光学记录介质的物镜光学系统和使用物镜光学系统的光学拾取装置

    公开(公告)号：US20060077794A1

    公开(公告)日：2006-04-13

    申请号：US11231834

    申请日：2005-09-22

    申请人： Toshiaki Katsuma ,  Yu Kitahara ,  Masao Mori ,  Tetsuya Ori

    发明人： Toshiaki Katsuma ,  Yu Kitahara ,  Masao Mori ,  Tetsuya Ori

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13925 ,  G11B7/1275 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An objective optical system for focusing light from a light source onto at least two different types of optical recording media having different substrate thicknesses in order to record or reproduce information on the optical recording media includes at least two lens groups arranged along an optical axis for focusing light of each one of two wavelengths that are the same or very nearly the same from the light source on a different one of the at least two different types of optical recording media, such as an AOD and a BD, having different substrate thicknesses. The separations of the two lens groups are different when light of each wavelength is used, and four different types of optical recording media with different substrate thicknesses may be used. An optical pickup device includes the objective optical system, the recording media, and a light source supplying the light of the two wavelengths.

    摘要翻译： 用于将来自光源的光聚焦到具有不同衬底厚度的至少两种不同类型的光学记录介质以便在光学记录介质上记录或再现信息的物镜光学系统包括沿着光轴布置以聚焦的至少两个透镜组 具有不同基板厚度的至少两种不同类型的光学记录介质（例如AOD和BD）中的不同的一个上的光源相同或非常接近相同的两个波长中的每一个的光。 当使用每个波长的光时，两个透镜组的分离是不同的，并且可以使用具有不同衬底厚度的四种不同类型的光学记录介质。 光拾取装置包括物镜光学系统，记录介质和提供两个波长的光的光源。

    Optical recording media objective lens and optical pickup device using it
    5.
    发明授权
    Optical recording media objective lens and optical pickup device using it 失效
    光学记录介质物镜和使用它的光学拾取装置

    公开(公告)号：US07298687B2

    公开(公告)日：2007-11-20

    申请号：US10874388

    申请日：2004-06-24

    申请人： Yu Kitahara ,  Toshiaki Katsuma ,  Tetsuya Ori

    发明人： Yu Kitahara ,  Toshiaki Katsuma ,  Tetsuya Ori

    IPC分类号： G11B11/00

    CPC分类号： G11B7/139 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical recording media objective lens is disclosed for converging either of two working lights of a first wavelength or a second wavelength. The working light of the first wavelength is converged at a first numerical aperture onto the first optical recording medium and the working light of the second wavelength is converged at a second numerical aperture onto the second optical recording medium. An aperture adjusting zonal part is included on at least one of the objective lens surfaces for apparently eliminating light at the periphery of a light flux having a wavelength λ1 while maintaining light at the periphery of a light flux having a wavelength λ2, where λ1 is one of the first and second wavelengths and λ2 is the other wavelength. The aperture adjusting zonal part is formed so as to satisfy two conditions.

    摘要翻译： 公开了用于会聚第一波长或第二波长的两个工作光中的任一个的光学记录介质物镜。 第一波长的工作光在第一光学记录介质上会聚在第一数值孔径，第二波长的工作光在第二数值孔径处会聚在第二光学记录介质上。 在至少一个物镜表面上包括孔径调节区带部分，用于明显地消除具有波长λ1的光束周围的光，同时保持具有 波长λ2，其中λ1是第一和第二波长中的一个，λ2是另一个波长。 孔径调节区域形成为满足两个条件。

    Objective optical system for optical recording media and optical pickup device using it
    6.
    发明申请
    Objective optical system for optical recording media and optical pickup device using it 失效

    公开(公告)号：US20060098555A1

    公开(公告)日：2006-05-11

    申请号：US11267513

    申请日：2005-11-07

    申请人： Toshiaki Katsuma ,  Yu Kitahara ,  Masao Mori ,  Tetsuya Ori

    发明人： Toshiaki Katsuma ,  Yu Kitahara ,  Masao Mori ,  Tetsuya Ori

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1367 ,  G11B7/1369 ,  G11B7/1374 ,  G11B2007/0006

    摘要： An objective optical system focuses light from a light source onto at least two different types of optical recording media having different substrate thicknesses in order to record or reproduce information on the optical recording media by using a variable refractive power element and an objective lens. The variable refractive power element may be a liquid crystal element with concentric zones that serves as a transparent plate having no convergence effect when no voltage is applied when selecting an AOD, DVD, or CD and as a converging lens when a voltage is applied when selecting a BD. Alternately, the variable refractive power element may electrically vary the refractive index of a nanoparticle dispersion or at least one liquid of a two-liquid lens element. A diffractive optical element may be used to assist in focusing light to four recording media. An optical pickup device includes the objective optical system.

    Objective optical system and optical pickup device using it
    7.
    发明申请
    Objective optical system and optical pickup device using it 审中-公开
    物镜光学系统和使用它的光学拾取装置

    公开(公告)号：US20050259554A1

    公开(公告)日：2005-11-24

    申请号：US11128279

    申请日：2005-05-13

    申请人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

    发明人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

    IPC分类号： G11B7/135 ,  G11B7/00

    CPC分类号： G11B7/1367 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An objective optical system is formed of a diffractive optical element with a diffractive surface formed on a planar ‘virtual surface’ (i.e., a surface that would be planar but for the diffractive structure) and an objective lens for focusing three collimated light beams of three different wavelengths at three different numerical apertures onto desired positions of three different recording media with substrates of different thicknesses, such as an AOD, a DVD, and a CD, that introduce different amounts of spherical aberration in the focused beams. The objective optical system provides compensating spherical aberration to the three light beams while keeping equal the distance between the diffractive optical element and the objective lens, and focuses second-order diffracted light of one wavelength and first-order diffracted light of the other two wavelengths. An optical pickup device includes the objective optical system, the recording media, and a light source supplying the three light beams.

    摘要翻译： 物镜光学系统由具有衍射面的衍射光学元件形成，该衍射面形成在平面“虚拟表面”（即，对于衍射结构为平面的表面）和用于聚焦三个准直光束的物镜 不同波长的三个不同数值孔径到具有不同厚度的衬底（例如AOD，DVD和CD）的三种不同记录介质的所需位置，其在聚焦光束中引入不同量的球面像差。 物镜光学系统对三个光束提供补偿球面像差，同时保持衍射光学元件和物镜之间的距离相等，并且聚焦一个波长的二次衍射光和另外两个波长的一次衍射光。 光拾取装置包括物镜光学系统，记录介质和提供三个光束的光源。

    Objective lens and optical pickup device using it
    8.
    发明申请
    Objective lens and optical pickup device using it 有权
    物镜和光拾取装置使用它

    公开(公告)号：US20050105448A1

    公开(公告)日：2005-05-19

    申请号：US10988638

    申请日：2004-11-16

    申请人： Yu Kitahara ,  Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori

    发明人： Yu Kitahara ,  Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori

    IPC分类号： G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1392 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

    摘要： An objective lens is formed as an objective lens element with a diffractive surface on one side. The objective lens focuses a collimated light beam of a first wavelength diffracted by the objective lens onto a first recording medium, a collimated light beam of a second wavelength diffracted by the objective lens onto a second recording medium, and a diverging light beam of a third wavelength diffracted by the objective lens onto a third recording medium. The three light beams are focused at three different working distances from the objective lens and the diffraction orders of the diffracted light of two of the light beams is the same. The objective lens satisfies certain conditions related to the shortest of the three different working distances, the focal length of the objective lens element at the shortest of the three wavelengths, and the thickness of the objective lens.

    摘要翻译： 物镜形成为在一侧具有衍射面的物镜元件。 物镜将由物镜衍射的第一波长的准直光束聚焦到第一记录介质上，将由物镜衍射的第二波长的准直光束聚焦到第二记录介质上，并将第三波长的发散光束 波长由物镜衍射到第三记录介质上。 三个光束聚焦在与物镜三个不同的工作距离处，两个光束的衍射光的衍射级相同。 物镜满足与三个不同工作距离中最短的物体相关的某些条件，三个波长中最短的物镜的焦距和物镜的厚度。

    Objective lens for optical recording media and optical pickup device using it
    9.
    发明申请
    Objective lens for optical recording media and optical pickup device using it 有权
    用于光学记录介质的物镜和使用它的光学拾取装置

    公开(公告)号：US20050041560A1

    公开(公告)日：2005-02-24

    申请号：US10922958

    申请日：2004-08-23

    申请人： Toshiaki Katsuma ,  Yu Kitahara ,  Tetsuya Ori ,  Masao Mori

    发明人： Toshiaki Katsuma ,  Yu Kitahara ,  Tetsuya Ori ,  Masao Mori

    IPC分类号： G02B5/18 ,  G02B13/00 ,  G11B7/00 ,  G11B7/135

    CPC分类号： G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An objective lens consists of two lens elements of different materials that are cemented. The lens surfaces that are cemented includes a phase function so that the cemented surface forms a optical diffractive surface that enables the objective lens to focus incident light of three different wavelengths with different numerical apertures onto different optical recording media. Three conditions are satisfied so as to achieve optimum imaging. The optical diffractive surface may be shaped so that the order of the diffracted light of the shortest wavelength λ1 having the largest diffracted intensity is different from the order of the diffracted light of the second wavelength λ2 having the largest diffracted intensity, and the order of the diffracted light of the first wavelength λ1 having the largest diffracted intensity is also different from the order of the diffracted light of the third wavelength λ3 having the largest diffracted intensity.

    摘要翻译： 物镜由两种胶合的不同材料的透镜元件组成。 胶合的透镜表面包括相位功能，使得胶合表面形成光学衍射表面，使得物镜能够使具有不同数值孔径的三种不同波长的入射光聚焦到不同的光学记录介质上。 满足三个条件以实现最佳成像。 光学衍射面可以被成形为具有最大衍射强度的最短波长λ1的衍射光的次序与具有最大衍射强度的第二波长λ2的衍射光的次序不同，并且 具有最大衍射强度的第一波长λ1的衍射光也与具有最大衍射强度的第三波长λ3的衍射光的次数不同。