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公开(公告)号：EP0298688B1
公开(公告)日：1993-09-22
申请号：EP88306091.5
申请日：1988-07-04
申请人： SONY CORPORATION
发明人： Umezu, Nobuhiko
CPC分类号： G11B7/1369 , G02F1/335
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公开(公告)号：EP0737966B1
公开(公告)日：2003-06-11
申请号：EP96105641.3
申请日：1996-04-10
申请人： SONY CORPORATION
IPC分类号： G11B7/24
CPC分类号： G11B7/242 , G11B7/005 , G11B7/08511 , G11B7/127 , G11B7/24 , G11B7/24038 , G11B7/244 , G11B7/2531 , G11B7/2534 , G11B7/2542 , G11B7/257 , G11B7/2578 , G11B7/258 , G11B7/2585 , G11B2007/2571 , G11B2007/25713 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
摘要： 1. An optical disc comprises a first information storing layer (13, 23, 43, 62) for reflecting a first laser beam and for transmitting a second laser beam, the wavelength of said second laser beam being shorter than the wavelength of said first laser beam, the information stored in said first information storing layer (13, 23, 43, 62) being read-out by said first laser beam, a second information storing layer (12, 22, 42, 63) for reflecting said second laser beam transmitted through said first information storing layer (13, 23, 43, 62), the information stored in said second information storing layer (12, 22, 42, 63) being read-out by said second laser beam, and a light incidence surface into which first and second laser beams are irradiated for reading-out the information from said first and second information storing layers (13, 23, 43, 62; 12, 22, 42, 63) respectively, said light incidence surface being formed at one side of said optical disc. The first information storing layer (13, 23, 43, 62) and the second information storing layer (12, 22, 42, 63) are provided to be optically separated for separating the reflected laser beam reflected by said first information storing layer (13, 23, 43, 62) and the reflected laser beam reflected by said second information storing layer (12, 22, 42, 63), and the length between said light incidence surface to said second information storing layer is substantially equal to the thickness of said optical disc.
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公开(公告)号：EP1168319A1
公开(公告)日：2002-01-02
申请号：EP01118988.3
申请日：1996-04-10
申请人： SONY CORPORATION
IPC分类号： G11B7/24
CPC分类号： G11B7/242 , G11B7/005 , G11B7/08511 , G11B7/127 , G11B7/24 , G11B7/24038 , G11B7/244 , G11B7/2531 , G11B7/2534 , G11B7/2542 , G11B7/257 , G11B7/2578 , G11B7/258 , G11B7/2585 , G11B2007/2571 , G11B2007/25713 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
摘要： 1. An optical disc comprises a first information storing layer (13, 23, 43, 62) for reflecting a first laser beam and for transmitting a second laser beam, the wavelength of said second laser beam being shorter than the wavelength of said first laser beam, the information stored in said first information storing layer (13, 23, 43, 62) being read-out by said first laser beam, a second information storing layer (12, 22, 42, 63) for reflecting said second laser beam transmitted through said first information storing layer (13, 23, 43, 62), the information stored in said second information storing layer (12, 22, 42, 63) being read-out by said second laser beam, and a light incidence surface into which first and second laser beams are irradiated for reading-out the information from said first and second information storing layers (13, 23, 43, 62; 12, 22, 42, 63) respectively, said light incidence surface being formed at one side of said optical disc. The first information storing layer (13, 23, 43, 62) and the second information storing layer (12, 22, 42, 63) are provided to be optically separated for separating the reflected laser beam reflected by said first information storing layer (13, 23, 43, 62) and the reflected laser beam reflected by said second information storing layer (12, 22, 42, 63), and the length between said light incidence surface to said second information storing layer is substantially equal to the thickness of said optical disc.
摘要翻译： 1，一种光盘，包括用于反射第一激光束和传输第二激光束的第一信息存储层（13,23,43,62），所述第二激光束的波长比所述第一激光器的波长短 由所述第一激光束读出存储在所述第一信息存储层（13,23,43,62）中的信息;第二信息存储层（12,22,42,63），用于将所述第二激光束 ，通过所述第一信息存储层（13,23,43,62）传输的信息，由所述第二激光束读出存储在所述第二信息存储层（12,22,42,63）中的信息，以及光入射表面 为了从所述第一和第二信息存储层（13,23,43,62; 12,22,42,63）分别读出信息而照射第一和第二激光束，所述光入射表面形成为一个 所述光盘的一侧。 第一信息存储层（13,23,43,62）和第二信息存储层（12,22,42,63）被设置为光学分离以分离由所述第一信息存储层（13）反射的反射激光束 ，23,43,62）和由所述第二信息存储层（12,22,42,63）反射的反射激光束之间的距离以及所述光入射表面到所述第二信息存储层之间的长度基本上等于 所述光盘。
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公开(公告)号：EP0298688A3
公开(公告)日：1990-01-17
申请号：EP88306091.5
申请日：1988-07-04
申请人： SONY CORPORATION
发明人： Umezu, Nobuhiko
CPC分类号： G11B7/1369 , G02F1/335
摘要： A light beam deflection device comprises an acoustooptic element (1) including a piezoelectric crystal base (1A) with a first flat surface and second and third flat surfaces each perpendicular to the first flat surface and opposite to each other and a transducer (1B) attached to the first flat surface of the piezoelectric crystal base (1A) and supplied with a deflection control signal, a first lens element (2) having a first cylindrical surface (11a) forming a cylindrical lens and a first slanted flat surface (11b) opposite to the first cylindrical surface (11a) and disposed so that the first cylindrical surface (11a) faces the second flat surface of the piezoelectric crystal base (1A), and a second lens element (3) having a second cylindrical surface (12a) forming a cylindrical lens and a second slanted flat surface (12b) opposite to the second cylindrical surface (12a) and disposed so that the second cylindrical surface (12a) faces the third flat surface of the piezoelectric crystal base (1A). A light beam passing through the first lens element (2), acoustooptic element (1) and second lens element (3) successively is deflected by the acoustooptic element (1) in accordance with the deflection control signal.
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公开(公告)号：EP0737966A1
公开(公告)日：1996-10-16
申请号：EP96105641.3
申请日：1996-04-10
申请人： SONY CORPORATION
IPC分类号： G11B7/24
CPC分类号： G11B7/242 , G11B7/005 , G11B7/08511 , G11B7/127 , G11B7/24 , G11B7/24038 , G11B7/244 , G11B7/2531 , G11B7/2534 , G11B7/2542 , G11B7/257 , G11B7/2578 , G11B7/258 , G11B7/2585 , G11B2007/2571 , G11B2007/25713 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
摘要： A multilayer optical disk having an information storage layer which can as well as be reproduced by a general-purpose reproducing apparatus, for example, a compact disk player, and from which information can be read from other information storage layers by using an exclusive reproducing apparatus. The multilayer optical disk having a plurality of information storage layers according to the present invention includes a plurality of information storage layers, wherein one of the plural information storage layers has a reflection factor of 70 % or higher with respect to a wavelength of 770 nm to 830 nm which is a first wavelength of reproducing light, and other information storage layers are reproduced with reproducing light having a second wavelength which is different from the first wavelength of reproducing light. Each of the other information storage layers has a reflection factor of 20 % or higher with respect to the second wavelength of reproducing light. The second wavelength of reproducing light is 615 nm to 655 nm.
摘要翻译： 具有信息存储层的多层光盘，其可以由通用再现装置（例如，光盘播放器）再现，并且可以通过使用专用再现装置从其它信息存储层读取信息 。 根据本发明的具有多个信息存储层的多层光盘包括多个信息存储层，其中多个信息存储层中的一个信息存储层的反射率相对于770nm的波长具有70％以上的反射率， 作为再现光的第一波长的830nm，以及与再现光的第一波长不同的具有第二波长的再现光再现其它信息存储层。 每个其它信息存储层相对于再现光的第二波长具有20％或更高的反射系数。 再生光的第二波长为615nm〜655nm。
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公开(公告)号：EP0298688A2
公开(公告)日：1989-01-11
申请号：EP88306091.5
申请日：1988-07-04
申请人： SONY CORPORATION
发明人： Umezu, Nobuhiko
CPC分类号： G11B7/1369 , G02F1/335
摘要： A light beam deflection device comprises an acoustooptic element (1) including a piezoelectric crystal base (1A) with a first flat surface and second and third flat surfaces each perpendicular to the first flat surface and opposite to each other and a transducer (1B) attached to the first flat surface of the piezoelectric crystal base (1A) and supplied with a deflection control signal, a first lens element (2) having a first cylindrical surface (11a) forming a cylindrical lens and a first slanted flat surface (11b) opposite to the first cylindrical surface (11a) and disposed so that the first cylindrical surface (11a) faces the second flat surface of the piezoelectric crystal base (1A), and a second lens element (3) having a second cylindrical surface (12a) forming a cylindrical lens and a second slanted flat surface (12b) opposite to the second cylindrical surface (12a) and disposed so that the second cylindrical surface (12a) faces the third flat surface of the piezoelectric crystal base (1A). A light beam passing through the first lens element (2), acoustooptic element (1) and second lens element (3) successively is deflected by the acoustooptic element (1) in accordance with the deflection control signal.
摘要翻译： 一种光束偏转装置包括声光元件（1），该声光元件（1）包括具有第一平坦表面的压电晶体基座（1A）以及分别垂直于第一平坦表面且彼此相对的第二和第三平坦表面以及附连的换能器（1B） （1A）的第一平坦表面并且提供有偏转控制信号，第一透镜元件（2）具有形成柱面透镜的第一柱面（11a）和相对的第一倾斜平面（11b） 第一圆柱表面（11a）设置成使得第一圆柱表面（11a）面对压电晶体基底（1A）的第二平坦表面，第二透镜元件（3）具有形成第二圆柱表面（12a）的第二圆柱表面 一个柱面透镜和一个与第二圆柱形表面（12a）相对的第二倾斜平坦表面（12b），并设置成使第二圆柱形表面（12a）面向压电晶体的第三平坦表面 （1A）。 根据偏转控制信号，通过第一透镜元件（2），声光元件（1）和第二透镜元件（3）的光束被声光元件（1）依次偏转。
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