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    • 1. 发明公开
      EP1538614A2 Catadioptric optical system, optical pickup and optical disk drive employing the same, and optical disk 审中-公开
    • Catadioptric optical system, optical pickup and optical disk drive employing the same, and optical disk
    • 与之光学拾取器和光盘驱动器和光盘提供了一种反射折射式光学系统
    • EP1538614A2
    • 2005-06-08
    • EP05001525.4
    • 1998-11-21
    • Samsung Electronics Co., Ltd.
    • Lee, Chul-Woo , Chung, Chong-Sam , Lee, Yong-Hoon , Yeon, Cheol-Sung , Seo, Joong-Eon , Cheong, Young-Min , Shin, Dong-Ho , Cho, Kun-Ho , Seong, Pyong-Yong , Yoo, Jang-Hoon
    • G11B7/135
    • G11B7/1387 , G11B7/08576 , G11B7/0901 , G11B7/0908 , G11B7/122 , G11B7/1374 , G11B7/22 , G11B7/24 , G11B11/10547 , G11B11/10554 , G11B11/10569 , G11B11/1058 , G11B11/10584 , G11B2007/13725
    • An optical focusing system which uses a light beam emitted from a light source, includes a refractive surface on one side of the optical focusing system and having a first radius of curvature, a first reflection surface on the above one side, surrounding the refractive surface and having a second radius of curvature being different from the first radius of curvature, a transparent beam focusing surface on the other side of the optical focusing system, and a second reflection surface on the above other side and surrounding the beam focusing surface. The refractive surface refracts an incident light beam, the second reflection surface reflects a light beam refracted by the refractive surface toward the first reflection surface, and the first reflection surface focuses a laser light beam reflected from the second reflection surface on the beam focusing surface as a focused beam spot. The optical focusing system can be used in an optical pickup. The optical pickup uses the optical focusing system to generate, from a light beam e.g. laser light emitted from a light source, a beam spot used for recording or reading information to a recording medium. The optical pickup uses a near field effect provided by an optical focusing system according to the present invention, to allow a superior density of recording or reading. Further, the optical focusing system according to the invention can use a light beam having a beam diameter smaller than that of the laser beam used for an existing optical focusing system for forming a near field. Thus, the optical pickup according to the invention can record or read information on an optical disk having a surface recording density of 10Gbit/inch 2 or more. Even if an incident light beam inclination occurs due to movement of the disk or the optical pickup, information can be recorded on or read from a disk accurately. Also, the assembly of the optical focusing system and the adjustment of the assembled optical focusing system are easily performed.
    • 光学聚焦系统，该系统使用从一光源发射的光束，包括：在所述光学聚焦系统的一侧上的折射表面和具有第一曲率半径，在上述一侧上的第一反射面，包围折射表面和 具有不同于所述第一曲率半径不同的第二曲率半径，透明束聚焦表面上的光学聚焦系统的另一侧，并在上述另一侧的第二反射面与所述束聚焦表面周围。 折射面折射到入射光束，所述第二反射面反射由折射面朝向第一反射面折射的光束，并且所述第一反射表面聚焦来自上的光束在第二反射表面反射的激光束聚焦表面 聚焦束斑。 光学聚焦系统可以在光拾取器中使用。 光学拾取器采用了光学聚焦系统来生成，从光束E.G. 来自光源的，用于记录或读出信息到记录介质上的光点发出的激光。 光学拾取器通过使用在光学聚焦系统gemäß到本发明提供了一种近场效果，以允许记录或读取的一个优越的密度。 此外，光学聚焦系统gemäß到本发明可以使用具有光束直径比用于现有光学聚焦系统用于形成近场的激光束的更小的光束。 因此，光学拾取器gemäß发明可以记录或读出到光盘具有10千兆位/英寸2或更高的面记录密度的信息。 即使入射光束倾斜的发生是由于磁盘或光学拾取器的移动，可以被记录或从精确地设定一个磁盘读取信息的。 所以，很容易进行的光学聚焦系统的装配和组装的光学聚焦系统的调整。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 2. 发明公开
      EP0859356A3 Optical pickup having an objective lens compatible with a plurality of optical disk formats 失效
    • Optical pickup having an objective lens compatible with a plurality of optical disk formats
    • Optischer Kopf mit einer zu vielen optischen Plattenformaten kompatiblen Objektivlinse
    • EP0859356A3
    • 1999-01-07
    • EP98301050.5
    • 1998-02-13
    • Samsung Electronics Co., Ltd.
    • Yoo, Jang-Hoon , Chung, Chong-Sam , Lee, Chul-Woo , Cho, Kun-Ho
    • G11B7/00
    • G11B7/139 , G11B7/1353 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
    • An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source (41), an objective lens (20, 20') having a function of focusing light emitted from the light source (41) into the optimal light spot on an information recording surface of one of the plurality of the optical recording media (30), and a light detector (43) to detect light transmitted through the objective lens (20, 20') after being reflected from the information recording surface of the optical recording medium (30) on which the light spot is formed. The objective lens (20, 20') has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium (30A) and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium (30A), during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium (30B) and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium (30B), during reproduction of the second optical recording medium (30B).
    • 该装置具有内部区域，环形透镜区域和以顶点为中心的外部区域。 环形透镜区域具有环形并将内部区域与外部区域分开。 内部区域，环形透镜区域和外部区域具有非球面形状，使得在读取第一介质的情况下，透过内部区域和外部区域的光聚焦成单个光点，通过该单个光点从 第一介质的信息记录表面。 透过环形透镜区域的光被散射，以便不被聚焦在第一介质的信息记录表面上。 在读取第二介质的情况下，透过内部区域和环形透镜区域的光被聚焦成从第二介质的信息记录表面读出信息的单个光点。 透过外透镜区域的光被散射，以便不被聚焦在第二介质的信息记录表面上。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 5. 发明公开
      EP1256941A2 Optical pickup having an objective lens compatible with a plurality of optical disk formats 失效
    • Optical pickup having an objective lens compatible with a plurality of optical disk formats
    • 具有与各种光盘格式兼容的物镜的光学拾取头
    • EP1256941A2
    • 2002-11-13
    • EP02077195.2
    • 1998-02-13
    • SAMSUNG ELECTRONICS CO., LTD.
    • Yoo, Jang-Hoon , Chung, Chong-Sam , Lee, Chul-Woo , Cho, Kun-Ho
    • G11B7/00
    • G11B7/139 , G11B7/1353 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
    • An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source (41), an objective lens (20, 20') having a function of focusing light emitted from the light source (41) into the optimal light spot on an information recording surface of one of the plurality of the optical recording media (30), and a light detector (43) to detect light transmitted through the objective lens (20, 20') after being reflected from the information recording surface of the optical recording medium (30) on which the light spot is formed. The objective lens (20, 20') has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium (30A) and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium (30A), during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium (30B) and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium (30B), during reproduction of the second optical recording medium (30B).
    • 的光学拾取器与光记录介质的多个均使用光不同波长的兼容。 光学拾取器包括：物镜中的至少一个光源（41）（20，20“），其具有从所述光源（41）到最佳聚焦光发射的光点上的所述一个的信息记录面上的功能 所述光学记录介质（30）的多个，并且一个光检测器（43）来检测光反从光学记录介质（30）的信息记录表面反射后通过物镜（20，20“）mitted在其上 光点形成。 物镜（20,20“）具有在内部区域到环形设计透镜区和外区检测做了环形设计透镜区域从外部区域划分的内部区域，并且具有在顶点为中心的环状。 内部区域，环形设计透镜区和外区具有非球面形状透过内区和外区成单个光点，通过该信息可以从一个相对薄的第一光学信息记录表面被读取以将光聚焦反mitted 记录介质（30A）和散射光的反式通过位于内区和外区，以便没有信息不能从第一光学记录介质（30A）的所述信息记录表面的第一光的再现期间读取之间的环形设计透镜区域mitted 记录介质。 内部区域和环形设计透镜区域发射的光到一个单一的光点，通过该信息可以从相对较厚的第二光记录介质的（30B）的信息记录面进行读取和散射光的反式通过外透镜区mitted所以没有信息不能 所述第二光记录介质（30B）的再现期间从所述第二光记录介质（30B）的信息记录面读取。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 7. 发明公开
      EP0859356A2 Optical pickup having an objective lens compatible with a plurality of optical disk formats 失效
    • Optical pickup having an objective lens compatible with a plurality of optical disk formats
    • Optischer Kopf mit einer zu vielen optischen Plattenformaten kompatiblen Objektivlinse
    • EP0859356A2
    • 1998-08-19
    • EP98301050.5
    • 1998-02-13
    • Samsung Electronics Co., Ltd.
    • Yoo, Jang-Hoon , Chung, Chong-Sam , Lee, Chul-Woo , Cho, Kun-Ho
    • G11B7/00
    • G11B7/139 , G11B7/1353 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
    • An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source (41), an objective lens (20, 20') having a function of focusing light emitted from the light source (41) into the optimal light spot on an information recording surface of one of the plurality of the optical recording media (30), and a light detector (43) to detect light transmitted through the objective lens (20, 20') after being reflected from the information recording surface of the optical recording medium (30) on which the light spot is formed. The objective lens (20, 20') has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium (30A) and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium (30A), during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium (30B) and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium (30B), during reproduction of the second optical recording medium (30B).
    • 一种与多个使用不同波长的光的多个光学记录介质兼容的光学拾取器。 所述光学拾取器包括至少一个光源（41），具有将从所述光源（41）发射的光聚焦到所述光源（41）中的一个的信息记录表面上的最佳光点的功能的物镜（20,20'） 多个光记录介质（30），以及光检测器（43），用于检测从光记录介质（30）的信息记录表面反射后透过物镜（20,20'）的光，其中 形成光点。 物镜（20,20'）具有内部区域，环形透镜区域和外部区域，使得环形透镜区域将内部区域与外部区域分开并且具有以顶点为中心的环形。 内部区域，环形透镜区域和外部区域具有非球面形状，以将透过内部区域和外部区域的光聚焦成单个光点，通过该单个光点可以从相对薄的第一光学信息记录表面读取信息 记录介质（30A）和透射通过位于内部区域和外部区域之间的环形透镜区域的散射光，从而在第一光学记录介质（30A）的再现期间不能从第一光学记录介质（30A）的信息记录表面读取信息 记录介质。 内部区域和环形透镜区域将光透射到单个光点中，通过该单个光点可以从相对较厚的第二光学记录介质（30B）的信息记录表面读取信息，并且散射透过外部透镜区域的光，使得信息不能 在第二光学记录介质（30B）的再现期间，从第二光学记录介质（30B）的信息记录表面读取。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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