公开(公告)号：EP1150286A2

公开(公告)日：2001-10-31

申请号：EP01303370.9

申请日：2001-04-10

申请人： Seiko Instruments Inc.

发明人： Shinohara, Yoko ,  Mitsuoka, Yasayuji ,  Oumi, Manabu ,  Kasama, Nobuyuki ,  Maeda, Hidetaka ,  Kato, Kenji ,  Niwa, Takashi

IPC分类号： G11B7/12

CPC分类号： G11B7/22 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0909 ,  G11B7/0916 ,  G11B7/122 ,  G11B7/1387

摘要： A near-field optical head capable of rapid recording and/or reproducing of the information is provided. The near-field optical head condenses the light from the light source and irradiates the light on the minute opening 1. Then, by means of detecting the reflected light from the light condensing mark 501 provided on the circumference of the minute opening 1, the relative position between the light condensing point condensed by the lens and the light condensing mark 501 is detected so that the light condensing point is controlled to follow the light condensing mark 501. Thus, intensive and constant near-field light can be generated in the minute opening 1 and a signal having high S/N can be obtained even by a rapid scanning of the minute opening 1 over the recording medium so that rapid recording and/or reproducing of the information is made possible.

公开(公告)号：EP1150286B1

公开(公告)日：2006-08-09

申请号：EP01303370.9

申请日：2001-04-10

申请人： SEIKO INSTRUMENTS INC.

发明人： Shinohara, Yoko ,  Mitsuoka, Yasayuji ,  Oumi, Manabu ,  Kasama, Nobuyuki ,  Maeda, Hidetaka ,  Kato, Kenji ,  Niwa, Takashi

IPC分类号： G11B7/12

CPC分类号： G11B7/22 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0909 ,  G11B7/0916 ,  G11B7/122 ,  G11B7/1387

摘要： A near-field optical head capable of rapid recording and/or reproducing of the information is provided. The near-field optical head condenses the light from the light source and irradiates the light on the minute opening 1. Then, by means of detecting the reflected light from the light condensing mark 501 provided on the circumference of the minute opening 1, the relative position between the light condensing point condensed by the lens and the light condensing mark 501 is detected so that the light condensing point is controlled to follow the light condensing mark 501. Thus, intensive and constant near-field light can be generated in the minute opening 1 and a signal having high S/N can be obtained even by a rapid scanning of the minute opening 1 over the recording medium so that rapid recording and/or reproducing of the information is made possible.

公开(公告)号：EP1150286A3

公开(公告)日：2002-09-18

申请号：EP01303370.9

申请日：2001-04-10

申请人： Seiko Instruments Inc.

发明人： Shinohara, Yoko ,  Mitsuoka, Yasayuji ,  Oumi, Manabu ,  Kasama, Nobuyuki ,  Maeda, Hidetaka ,  Kato, Kenji ,  Niwa, Takashi

IPC分类号： G11B7/12

CPC分类号： G11B7/22 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0909 ,  G11B7/0916 ,  G11B7/122 ,  G11B7/1387

摘要： A near-field optical head capable of rapid recording and/or reproducing of the information is provided. The near-field optical head condenses the light from the light source and irradiates the light on the minute opening 1. Then, by means of detecting the reflected light from the light condensing mark 501 provided on the circumference of the minute opening 1, the relative position between the light condensing point condensed by the lens and the light condensing mark 501 is detected so that the light condensing point is controlled to follow the light condensing mark 501. Thus, intensive and constant near-field light can be generated in the minute opening 1 and a signal having high S/N can be obtained even by a rapid scanning of the minute opening 1 over the recording medium so that rapid recording and/or reproducing of the information is made possible.

摘要翻译： 提供了能够快速记录和/或再现信息的近场光学头。 近场光学头冷凝来自光源的光，并将光照射在分钟1上。然后，通过检测设置在分钟1的圆周上的聚光标记501的反射光， 检测由透镜聚光的聚光点和聚光标记501之间的位置，使得聚光点被控制以跟随聚光标记501.因此，可以在分钟开口中产生密集且恒定的近场光 1，并且即使通过记录介质上的分钟1的快速扫描，也可以获得具有高S / N的信号，使得信息的快速记录和/或再现成为可能。