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公开(公告)号：US20060171009A1
公开(公告)日：2006-08-03
申请号：US10549235
申请日：2004-03-15
IPC分类号： G02B26/08
CPC分类号： G11B7/1367
摘要： An optical scanning device for scanning an optical record carrier comprising an information layer. Crosstalk cancellation is provided using a phase modulating element (40, 140) for generating a phase profile providing an annular spot shape for a subsidiary beam which is coaxial with the main beam. The phase profile varies with an azimuthal angle measured about the optical axis of the beam portion. Further, a grating element (6, 106) is provided to generate two side beams. Each of the side beams and the subsidiary beam are focused to respective spots on the information layer along with the main beam spot. A radiation detector arrangement (25, 125) is provided for detecting information signals in each of the main beam, the two side beams and the subsidiary beam, and a signal processing arrangement (41, 42,43, 44,46,47,49) conducts crosstalk cancellation between the respective information signals to generate an output information signal. The invention provides a four-channel crosstalk cancellation arrangement which is capable of providing significantly improved crosstalk canceling performance.
摘要翻译： 一种用于扫描包括信息层的光学记录载体的光学扫描装置。 使用相位调制元件（40,140）提供串扰消除，用于产生与主光束同轴的辅助光束提供环形斑点形状的相位轮廓。 相位轮廓随着围绕光束部分的光轴测量的方位角而变化。 此外，提供光栅元件（6,106）以产生两个侧光束。 每个侧光束和辅助光束被聚焦到信息层上与主光束斑点相对应的斑点。 提供了用于检测主光束，两个侧光束和辅助光束中的每一个中的信息信号的辐射检测器装置（25,125），以及信号处理装置（41,42,43,44,44,47,49） ）在各个信息信号之间进行串扰消除以产生输出信息信号。 本发明提供一种四通道串扰消除装置，其能够提供显着改善的串扰消除性能。
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公开(公告)号：US20070035793A1
公开(公告)日：2007-02-15
申请号：US10549589
申请日：2004-03-17
IPC分类号： G02B26/08
CPC分类号： G11B7/1369 , G02B26/005 , G11B7/1376 , G11B7/13925 , G11B2007/0013
摘要： An optical scanning device for scanning a multi-layer optical record carrier when positioned in a scanning location in the device, the device being adapted for scanning a first information layer at a first information layer depth within the record carrier and a second information layer at a second information layer depth within the record carrier. The device comprises: a radiation source for generating a radiation beam; an objective lens, located in an optical path between the radiation source and the scanning location, for converging a radiation beam to a spot on an information layer; and-an optical switching arrangement switchable between a first state, in which the device is arranged to scan a said first information layer, and a second state, in which the device is arranged to scan a said second information layer. The optical switching arrangement comprises a compensator arranged to generate a different amount of spherical aberration in a radiation beam when in said first state and when in said second state. The compensator is further arranged to generate a different amount of vergence in a radiation beam when in said first state and when in said second state. The different amounts of spherical aberration and vergence are selected such that a free working distance between said objective lens and said optical record carrier remains substantially constant when switching between said first and second states.
摘要翻译： 一种用于在位于设备中的扫描位置时扫描多层光学记录载体的光学扫描装置，该装置适于在记录载体内以第一信息层深度扫描第一信息层， 记录载体内的第二信息层深度。 该装置包括：用于产生辐射束的辐射源; 物镜，位于辐射源和扫描位置之间的光路中，用于将辐射束会聚到信息层上的斑点; 以及光切换装置，其可以在设备被布置成扫描所述第一信息层的第一状态和第二状态之间切换，其中所述设备被布置成扫描所述第二信息层。 光学开关装置包括补偿器，其被布置成在处于所述第一状态和处于所述第二状态时在辐射束中产生不同量的球面像差。 补偿器还被布置成当处于所述第一状态和处于所述第二状态时，在辐射束中产生不同量的聚光。 选择不同量的球面像差和聚光度，使得当在所述第一和第二状态之间切换时，所述物镜和所述光学记录载体之间的自由工作距离保持基本恒定。
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公开(公告)号：US20060285220A1
公开(公告)日：2006-12-21
申请号：US10555686
申请日：2004-05-07
IPC分类号： G02B3/00
CPC分类号： G02B26/005 , G02B3/14
摘要： An electrowetting cell including an expandable joint between a body section and an end section. Such an expandable joint could include a membrane or a flange-like portion.
摘要翻译： 一种电润湿槽，包括在主体部分和端部部分之间的可伸缩接头。 这种可膨胀接头可以包括膜或凸缘状部分。
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