公开(公告)号：US20090279409A1

公开(公告)日：2009-11-12

申请号：US11720624

申请日：2005-11-25

申请人： Alexander Marc Van Der Lee ,  Coen Theodorus Hubertus Fran Liedenbaum ,  Teunis Willem Tukker

发明人： Alexander Marc Van Der Lee ,  Coen Theodorus Hubertus Fran Liedenbaum ,  Teunis Willem Tukker

IPC分类号： G11B7/135

CPC分类号： G11B7/133 ,  G11B7/0909 ,  G11B7/0916 ,  G11B7/131 ,  G11B7/14

摘要： A method and a device for simultaneously reading information from a plurality of data tracks (14) of an optical disc (22) by means of a detector illuminating said plurality of data tracks with laser spots (25), wherein light reflected from the laser spots is collected by means of a servo lens (29), further providing the detector with a plurality of detector elements (28a, 28b, 28c, 31a, 42a, 28bc, 28cc, 32a, 32b, 42ac, 51a, 52a, 52b) spaced apart from each other, arranging each detector element to detect (read) light reflected from a data track allotted to each element, arranging at most two detector elements (28bc, 28cc, 32a, 32b, 42ac, 52a, 52b) to be segmented detectors for providing both a power signal for the allotted track and an output signal for focus error control in a servo system guiding said detector along said tracks, reading only the power signal for each track by means of second detector elements (28a, 28b, 28c, 31a, 42a, 51a) and arranging each one of said second detector elements to be of substantially smaller area than the area of one of said first detector elements.

摘要翻译： 一种用于通过利用激光点（25）照射所述多个数据轨道的检测器从光盘（22）的多个数据轨道（14）同时读取信息的方法和装置，其中从激光点反射的光 通过伺服透镜（29）收集，进一步向检测器提供间隔开的多个检测器元件（28a，28b，28c，31a，42a，28bc，28cc，32a，32b，42ac，51a，52a，52b） 将每个检测器元件布置成检测（读取）从分配给每个元件的数据轨道反射的光，将至少两个检测器元件（28bc，28cc，32a，32b，42ac，52a，52b）布置成分段检测器 用于在所述轨道上引导所述检测器的伺服系统中提供用于分配轨道的功率信号和用于聚焦误差控制的输出信号，仅通过第二检测器元件（28a，28b，28c， 31a，42a，51a）并且布置所述第二检测中的每一个 或元件具有比所述第一检测器元件之一的面积更小的面积。

公开(公告)号：US07706234B2

公开(公告)日：2010-04-27

申请号：US11718921

申请日：2005-11-11

申请人： Andrei Mijiritskii ,  Sjoerd Stallinga ,  Bernardus Hendrikus Wilhelmus Hendriks ,  Stein Kuiper ,  Albert Hendrik Jan Immink ,  Teunis Willem Tukker ,  Coen Theodorus Hubertus Fran Liedenbaum

发明人： Andrei Mijiritskii ,  Sjoerd Stallinga ,  Bernardus Hendrikus Wilhelmus Hendriks ,  Stein Kuiper ,  Albert Hendrik Jan Immink ,  Teunis Willem Tukker ,  Coen Theodorus Hubertus Fran Liedenbaum

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G02B3/14 ,  G02B26/005 ,  G11B7/1369 ,  G11B7/1378

摘要： In an optical scanning device (10) capable of scanning an information plane of an optical record carrier (5) of different types such as BD, DVD and CD, the diameter of the radiation spot on the detector (7) is dependent on the numerical aperture of the objective system (4) that is used for scanning the record carrier An optimal design of the optical detection system for scanning a BD, result in a small radiation spot for the other types such as DVD and CD. By implementing an optical element (13) that increases the diameter of the radiation spot in the situation a DVD or CD is scanned, the influence of stray light is reduced and the tracking signals are improved

摘要翻译： 在能够扫描诸如BD，DVD和CD的不同类型的光学记录载体（5）的信息平面的光学扫描装置（10）中，检测器（7）上的辐射点的直径取决于数字 用于扫描记录载体的物镜系统（4）的孔径用于扫描BD的光学检测系统的最佳设计导致诸如DVD和CD的其它类型的小的辐射点。 通过实现在DVD或CD被扫描的情况下增加辐射点的直径的光学元件（13），杂散光的影响减小并且跟踪信号得到改善