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    • 2. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • WO2004084202A1
    • 2004-09-30
    • PCT/IB2004/050250
    • 2004-03-15
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.HENDRIKS, Bernardus, H., W.LIEDENBAUM, Coen, T., H., F.COENE, Willem, M., J., M.
    • HENDRIKS, Bernardus, H., W.LIEDENBAUM, Coen, T., H., F.COENE, Willem, M., J., M.
    • G11B7/135
    • G11B7/1367
    • 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.
    • 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的与主光束斑点相对应的斑点。 提供了一种用于检测主光束,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(41,42,43,44,46,47,49 )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。
    • 8. 发明申请
    • SPHERICAL ABERRATION DETECTOR
    • 球形异常检测器
    • WO2006129229A2
    • 2006-12-07
    • PCT/IB2006/051625
    • 2006-05-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.HENDRIKS, Bernardus, H., W.STALLINGA, SjoerdLIEDENBAUM, Coen, T., H., F.KUIPER, SteinIMMINK, Albert, H., J.TUKKER, Teunis, W.
    • HENDRIKS, Bernardus, H., W.STALLINGA, SjoerdLIEDENBAUM, Coen, T., H., F.KUIPER, SteinIMMINK, Albert, H., J.TUKKER, Teunis, W.
    • G11B7/135
    • G11B7/13927G11B7/0948G11B2007/0006
    • An optical scanning device (1) for scanning at least one information layer (2) of at least one optical record carrier (3). The device includes a radiation source (7) for providing at least a first radiation beam (4) comprising a first wavelength, an objective lens system (8) for converging the first radiation beam on a respective information layer (2), an information detector (23) for detecting at least a portion of the first radiation beam (22) reflected from the respective information layer, for determining information on said layer, and a spherical aberration detection system. The spherical aberration detection system includes an aberration detector (24) for detecting at least a portion of the reflected first radiation beam for determining spherical aberration of the first radiation beam, and a diffractive element (26) for diffracting at least a portion of the reflected first radiation beam towards the aberration detector (24), and for transmitting at least a portion of the reflected first radiation beam towards the information detector (23). In a first mode of operation the grating is arranged to introduce a phase change to an incident portion of a radiation beam for transmitting that portion towards the information detector (23). In a second mode of operation the grating is arranged to introduce a phase change to an incident portion of the reflected first radiation beam for diffracting that portion towards the aberration detector (24).
    • 一种用于扫描至少一个光学记录载体(3)的至少一个信息层(2)的光学扫描装置(1)。 该装置包括用于提供至少包括第一波长的第一辐射束(4)的辐射源(7),用于将第一辐射束会聚在相应信息层(2)上的物镜系统(8),信息检测器 (23),用于检测从各个信息层反射的第一辐射束(22)的至少一部分,用于确定关于所述层的信息,以及球面像差检测系统。 球面像差检测系统包括:像差检测器(24),用于检测用于确定第一辐射束的球面像差的反射的第一辐射束的至少一部分;以及衍射元件(26),用于衍射至少部分反射 朝向像差检测器(24)的第一辐射束,并且用于将反射的第一辐射束的至少一部分传送到信息检测器(23)。 在第一操作模式中,光栅被布置成将相变引入辐射束的入射部分,以将该部分传送到信息检测器(23)。 在第二操作模式中,光栅布置成将相变引入到反射的第一辐射束的入射部分,以将该部分衍射到像差检测器(24)。
    • 10. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • WO2006095303A1
    • 2006-09-14
    • PCT/IB2006/050691
    • 2006-03-06
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.TUKKER, Teunis, W.LIEDENBAUM, Coen, T., H., F.HENDRIKS, Bernardus, H., W.STALLINGA, SjoerdIMMINK, Albert, H., J.KUIPER, SteinCHEN, Ming, S.
    • TUKKER, Teunis, W.LIEDENBAUM, Coen, T., H., F.HENDRIKS, Bernardus, H., W.STALLINGA, SjoerdIMMINK, Albert, H., J.KUIPER, SteinCHEN, Ming, S.
    • G11B7/135
    • G11B7/1369G11B7/0909G11B7/1381
    • An optical scanning device (1) includes a radiation source (7), a detector (23) and a beam splitter (9). The radiation source (7) provides an incident radiation beam (4, 20) along a first optical path (19a) for scanning an information layer (2) of an optical record carrier (3). The detector (23) detects at least a portion of the radiation beam (22) reflected from the optical record carrier (3). The beam splitter (9) transmits the incident radiation beam (4) received from the radiation source along the first optical path (19a) towards the optical record carrier. The beam splitter (9) also transmits the reflected beam (22) received from the optical record carrier (3) along a second, different optical path (19b) towards the detector. The optical scanning device further includes a beam-deflecting element (30; 130; 230; 330; 630; 830; 930) positioned on the second optical path (19b) between the beam splitter (9) and the detector (23). The beam-deflecting element (30; 130; 230; 330; 630; 830; 930) is arranged to controllably deflect the path of the reflected radiation beam (22) for adjusting the lateral position of said reflected radiation beam incident upon the detector (23) over a predetermined range.
    • 光学扫描装置(1)包括辐射源(7),检测器(23)和分束器(9)。 辐射源(7)沿着第一光路(19a)提供入射辐射束(4,20),用于扫描光学记录载体(3)的信息层(2)。 检测器(23)检测从光学记录载体(3)反射的辐射束(22)的至少一部分。 分束器(9)将从辐射源接收的入射辐射束(4)沿着第一光路(19a)传送到光学记录载体。 分束器(9)还将从光学记录载体(3)接收的反射光束(22)沿着第二不同的光路(19b)传送到检测器。 光学扫描装置还包括位于分束器(9)和检测器(23)之间的第二光路(19b)上的光束偏转元件(30; 130; 230; 330; 630; 830; 930)。 光束偏转元件(30; 130; 230; 330; 630; 830; 930)被布置成可控地偏转反射的辐射束(22)的路径,用于调节入射到检测器上的所述反射的辐射束的横向位置( 23)超过预定范围。