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1. 发明公开

EP0255305A3 Focusing error detector and optical data detecting device incorporating the focusing error detector 失效
标题翻译：聚焦误差检测器和聚焦误差检测器的光学数据检测设备
公开(公告)号：EP0255305A3
公开(公告)日：1988-12-21
申请号：EP87306575
申请日：1987-07-24
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Nakata, Yasuo , Satou, Hideaki , Tanaka, Toshiyuki , Minami, Etsuji , Yoshida, Yoshio , Kurata, Yukio , Inoue, Teruaki
IPC分类号： G11B07/13
CPC分类号： G11B7/22 , G11B7/0909 , G11B7/13922
摘要： A focusing error detector comprises a light source (21), a collimator lens (22a) for making parallel the pencil of rays emitted by the light source (21), an objective lens (24a) which focuses the parallel pencil of rays to form a beam spot on a data-recording disc (23) with data tracks and guide tracks formed thereon and which receives the pencil of rays reflected from the data-recording disc (23), an optical system (26) for forming a beam spot from the reflected pencil of rays incident to the objective lens (24a), and an optical detector (27) having a plurality of divided optical sensor blocks (27a, 27b, 27c, 27d) for receiving the formed beam spot so as to detect the focusing error of the beam spot formed on the data-recording disc (23) on the basis of the configuration of the received beam spot.

2. 发明公开

EP0378443A3 Method for recording and reproducing information 失效
标题翻译：用于记录和再现信息的方法及其装置
公开(公告)号：EP0378443A3
公开(公告)日：1992-01-22
申请号：EP90300389.5
申请日：1990-01-12
申请人： SHARP KABUSHIKI KAISHA
发明人： Wada, Katsuo , Minami, Etsuji , Ohta, Kenji
IPC分类号： G11B11/00
CPC分类号： G11B7/004 , G11B9/10 , G11B11/00 , G11B11/08 , G11B11/12
摘要： A method and a device for recording and reproducing information utilizing a work function variation of a recording medium, the recording medium being made of a material whose work function can vary according to a structural change thereof caused by the irradiation of an electromagnetic wave or electron beam.

3. 发明公开

EP0255305A2 Focusing error detecting device and method of manufacturing the same 失效
标题翻译： Anordnung zum Detektieren von Fokussierungsfehlern und deren Herstellungsverfahren。
公开(公告)号：EP0255305A2
公开(公告)日：1988-02-03
申请号：EP87306575.9
申请日：1987-07-24
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Nakata, Yasuo , Satou, Hideaki , Tanaka, Toshiyuki , Minami, Etsuji , Yoshida, Yoshio , Kurata, Yukio , Inoue, Teruaki
IPC分类号： G11B7/13 , G02B27/00
CPC分类号： G11B7/22 , G11B7/0909 , G11B7/13922
摘要： A focusing error detector comprises a light source (21), a collimator lens (22a) for making parallel the pencil of rays emitted by the light source (21), an objective lens (24a) which focuses the parallel pencil of rays to form a beam spot on a data-recording disc (23) with data tracks and guide tracks formed thereon and which receives the pencil of rays reflected from the data-recording disc (23), an optical system (26) for forming a beam spot from the reflected pencil of rays incident to the objective lens (24a), and an optical detector (27) having a plurality of divided optical sensor blocks (27a, 27b, 27c, 27d) for receiving the formed beam spot so as to detect the focusing error of the beam spot formed on the data-recording disc (23) on the basis of the configuration of the received beam spot.
摘要翻译：聚焦误差检测器包括光源（21），用于平行由光源（21）发射的光线的准直透镜（22a）;物镜（24a），其聚焦平行的光线以形成数据记录盘（23）上的数据记录盘（23）上的数据记录盘（23），其上形成有数据轨道和导轨，并且接收从数据记录盘（23）反射的光线;光学系统（26），用于从入射到物镜（24a）的反射的射线的铅笔和具有多个分开的光学传感器块（27a，27b，27c，27d）的光学检测器（27），用于接收形成的光束点，以便检测聚焦误差根据所接收的光束点的结构形成在数据记录盘（23）上的光束点。

4. 发明公开

EP0378443A2 Method for recording and reproducing information 失效
标题翻译： Verfahren zur Aufnahme und Wiedergabe von信息。
公开(公告)号：EP0378443A2
公开(公告)日：1990-07-18
申请号：EP90300389.5
申请日：1990-01-12
申请人： SHARP KABUSHIKI KAISHA
发明人： Wada, Katsuo , Minami, Etsuji , Ohta, Kenji
IPC分类号： G11B11/00
CPC分类号： G11B7/004 , G11B9/10 , G11B11/00 , G11B11/08 , G11B11/12
摘要： A method and a device for recording and reproducing information utilizing a work function variation of a recording medium, the recording medium being made of a material whose work function can vary according to a structural change thereof caused by the irradiation of an electromagnetic wave or electron beam.
摘要翻译：一种用于利用记录介质的功能变化来记录和再现信息的方法和装置，所述记录介质由其功能可以根据其由电磁波或电子束的照射引起的结构变化而变化的材料制成。

5. 发明公开

EP0341936A2 Tilt adjustment mechanism for object lens driving 失效
标题翻译： Mechanismus zur NeigungseinstellungfüreinSteuergeräteiner Objektlinse。
公开(公告)号：EP0341936A2
公开(公告)日：1989-11-15
申请号：EP89304587.2
申请日：1989-05-05
申请人： SHARP KABUSHIKI KAISHA
发明人： Tanaka, Toshiyuki , Minami, Etsuji
IPC分类号： G11B7/08 , G11B7/085
CPC分类号： G11B7/0956 , G11B7/08 , G11B11/10541
摘要： A tilt adjustment mechanism for an object lens driving device (4) includes a base (13), a housing (3), a spherical supporting member (14) and adjustment screws (18a, 18b; 18c; 18d). The base (13) holds the object lens driving device (4). The housing (3) is provided with a supporting point (17) for supporting the base (13) and two adjustment points (20a, 20b; 20c; 20d). A straight line interconnecting the supporting point and one of the adjustment points is substantially at right angles with a straight line interconnecting the supporting point and the other of the adjustment points. The surface of the housing (3) facing to the base (13) is formed with a concave portion (17). The supporting member (14) is interposed between the base (13) and the housing (3) so as to be in point contact with the base and the housing. The screw hole (19a; 19c; 19d) is provided in one of the base and the housing. The holding portion (3c; 13d, 23a, 23b, 25a, 25b, 26a, 26b; 25c, 25d) for holding each of the adjustment screws meshing with this screw hole is provided to the other of the base and the housing.
摘要翻译：用于物镜驱动装置（4）的倾斜调节机构包括基座（13），壳体（3），球形支撑构件（14）和调节螺钉（18a，18b; 18c; 18d）。基座（13）保持物镜驱动装置（4）。壳体（3）设置有用于支撑基座（13）和两个调节点（20a，20b; 20c; 20d）的支撑点（17）。将支撑点和调整点之一相互连接的直线基本上与将支撑点和另一个调整点互相连接的直线成直角。壳体（3）的面向基部（13）的表面形成有凹部（17）。支撑构件（14）插入在基座（13）和壳体（3）之间，以便与基座和壳体定点接触。螺钉孔（19a; 19c; 19d）设置在基座和外壳之一中。用于保持与该螺钉孔啮合的每个调节螺钉的保持部分（3c; 13d，23a，23b，25a，25b，26a，26b，25c，25d）设置在基座和壳体中的另一个上。

6. 发明授权

EP0378443B1 Method for recording and reproducing information 失效
标题翻译：一种用于记录和再现信息的方法。
公开(公告)号：EP0378443B1
公开(公告)日：1994-11-02
申请号：EP90300389.5
申请日：1990-01-12
申请人： SHARP KABUSHIKI KAISHA
发明人： Wada, Katsuo , Minami, Etsuji , Ohta, Kenji
IPC分类号： G11B11/00
CPC分类号： G11B7/004 , G11B9/10 , G11B11/00 , G11B11/08 , G11B11/12

7. 发明授权

EP0341936B1 Tilt adjustment mechanism for object lens driving 失效
标题翻译：用于对象镜头驱动的倾斜调整机构
公开(公告)号：EP0341936B1
公开(公告)日：1993-09-08
申请号：EP89304587.2
申请日：1989-05-05
申请人： SHARP KABUSHIKI KAISHA
发明人： Tanaka, Toshiyuki , Minami, Etsuji
IPC分类号： G11B7/08 , G11B7/085
CPC分类号： G11B7/0956 , G11B7/08 , G11B11/10541

8. 发明授权

EP0255305B1 Focusing error detecting device and method of manufacturing the same 失效
标题翻译：聚焦错误检测装置及其制造方法
公开(公告)号：EP0255305B1
公开(公告)日：1993-01-07
申请号：EP87306575.9
申请日：1987-07-24
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Nakata, Yasuo , Satou, Hideaki , Tanaka, Toshiyuki , Minami, Etsuji , Yoshida, Yoshio , Kurata, Yukio , Inoue, Teruaki
IPC分类号： G11B7/13 , G02B27/00
CPC分类号： G11B7/22 , G11B7/0909 , G11B7/13922

9. 发明公开

EP0341936A3 Tilt adjustment mechanism for object lens driving 失效
标题翻译：用于对象镜头驱动的倾斜调整机构
公开(公告)号：EP0341936A3
公开(公告)日：1989-12-20
申请号：EP89304587.2
申请日：1989-05-05
申请人： SHARP KABUSHIKI KAISHA
发明人： Tanaka, Toshiyuki , Minami, Etsuji
IPC分类号： G11B7/08 , G11B7/085
CPC分类号： G11B7/0956 , G11B7/08 , G11B11/10541
摘要： A tilt adjustment mechanism for an object lens driving device (4) includes a base (13), a housing (3), a spherical supporting member (14) and adjustment screws (18a, 18b; 18c; 18d). The base (13) holds the object lens driving device (4). The housing (3) is provided with a supporting point (17) for supporting the base (13) and two adjustment points (20a, 20b; 20c; 20d). A straight line interconnecting the supporting point and one of the adjustment points is substantially at right angles with a straight line interconnecting the supporting point and the other of the adjustment points. The surface of the housing (3) facing to the base (13) is formed with a concave portion (17). The supporting member (14) is interposed between the base (13) and the housing (3) so as to be in point contact with the base and the housing. The screw hole (19a; 19c; 19d) is provided in one of the base and the housing. The holding portion (3c; 13d, 23a, 23b, 25a, 25b, 26a, 26b; 25c, 25d) for holding each of the adjustment screws meshing with this screw hole is provided to the other of the base and the housing.

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