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    • 4. 发明申请
    • SPOT SIZE FOCUS ERROR DETECTION FOR MULTIPLE BEAM OPTICAL SCANNING DEVICE
    • 多光束光学扫描装置的光斑尺寸聚焦误差检测
    • WO2006082544A2
    • 2006-08-10
    • PCT/IB2006050284
    • 2006-01-26
    • KONINKL PHILIPS ELECTRONICS NVVAN DER LEE ALEXANDER MLIEDENBAUM COEN T H FTUKKER TEUNIS W
    • VAN DER LEE ALEXANDER MLIEDENBAUM COEN T H FTUKKER TEUNIS W
    • G11B7/09G11B7/13G11B7/14
    • G11B7/0912G11B7/131G11B7/14
    • A device (1) for scanning an optical disc (6), the disc (6) comprising substantially parallel data tracks (10). The device (1) comprises an optical unit for creating track light spots (12) on the data tracks (10) and a plurality of detector light spots on a plurality of signal detectors. The device further comprises a focus error unit for with a beam manipulating element (21, 22, 22a, 92) for providing for at least one of the reflected beams a first optical path (24) to a first segmented detector (8a) and a second optical path (25) to a second segmented detector (8b). The lengths of the first optical path (24) and the second optical path (25) exhibit a difference (Dd), such that an intensity distribution of a first detector light spot on the first segmented detector (8a) is equal to an intensity distribution of a second detector light spot on the second segmented detector (8b) when the at least one track light spot is correctly focussed and that the intensity distribution on the first segmented detector (8a) differs from the intensity distribution on the second segmented detector (8b) when the at least one track light spot is not correctly focussed. The difference (Dd) is substantially less than a quotient of a distance between two adjacent detector light spots (Ds) and a numerical aperture (NA) of the lens (7). A dimension (Dl) of a light detecting area of the segmented detectors in a direction of adjacent detector light spots is less than the distance (Ds) between two adjacent detector light spots.
    • 一种用于扫描光盘(6)的设备(1),所述盘(6)包括基本上平行的数据轨道(10)。 该设备(1)包括用于在数据轨道(10)上创建轨道光点(12)的光学单元以及在多个信号检测器上的多个检测器光点。 该装置还包括聚焦误差单元,用于利用光束操纵元件(21,22,22a,92)将第一光路(24)提供给第一分段检测器(8a)的至少一个反射光束,以及 第二光路(25)传送到第二分段检测器(8b)。 第一光路(24)和第二光路(25)的长度呈现差异(Dd),使得第一分段检测器(8a)上的第一检测器光点的强度分布等于强度分布 当所述至少一个轨道光点被正确地聚焦并且所述第一分段检测器(8a)上的强度分布不同于所述第二分段检测器(8b)上的所述第二分段检测器(8b)上的所述强度分布时, ),当至少一个轨道光点未被正确地聚焦时。 差值(Dd)实质上小于两个相邻探测器光点(Ds)之间的距离与透镜(7)的数值孔径(NA)的商。 分段检测器的光检测区域在相邻检测器光点的方向上的尺寸(D1)小于两个相邻检测器光点之间的距离(Ds)。
    • 5. 发明申请
    • SPHERICAL ABERRATION DETECTOR
    • 球形异常检测器
    • WO2006129229A3
    • 2007-02-08
    • PCT/IB2006051625
    • 2006-05-22
    • KONINKL PHILIPS ELECTRONICS NVHENDRIKS BERNARDUS H WSTALLINGA SJOERDLIEDENBAUM COEN T H FKUIPER STEINIMMINK ALBERT H JTUKKER TEUNIS W
    • HENDRIKS BERNARDUS H WSTALLINGA SJOERDLIEDENBAUM COEN T H FKUIPER STEINIMMINK ALBERT H JTUKKER 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的信息层(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用于检测反射的第一辐射束的至少一部分以确定第一辐射束的球面像差的像差检测器(24),以及用于衍射至少部分反射的衍射元件(26) 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,光栅布置成将相位变化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)。
    • 9. 发明申请
    • COLOUR CORRECTION IN A VARIABLE FOCUS LENS
    • 可变焦度镜头中的颜色校正
    • WO2005096026A3
    • 2006-02-23
    • PCT/IB2005051083
    • 2005-03-31
    • KONINKL PHILIPS ELECTRONICS NVKUIPER STEINHENDRIKS BERNARDUS H WLIEDENBAUM COEN T H FVAN DER SIJDE ARJEN G
    • KUIPER STEINHENDRIKS BERNARDUS H WLIEDENBAUM COEN T H FVAN DER SIJDE ARJEN G
    • G02B3/14G02B26/02
    • G02B3/14G02B26/005
    • A variable focus lens of the type including a first fluid (A) and a second fluid (B), the fluids being immiscible and having different indices of refraction wherein the lens function of the variable focus lens can be selectively controlled. The refractive indices of the two respective fluids (A) and (B) are different, and it is highly advantageous if the difference between these refractive indices is relatively high, in order to obtain a good zoom factor. Many oils with a high refractive index (approximately above 1.7) are not colourless, but instead tend to be yellow. However, this causes colour changes in the image of an object compared with the object itself. This problem is solved by correcting or compensating for the resultant change of colour of an image of an object, compared with the object itself, caused by the use of a non-colourless fluid as the first and/or second fluid in a variable focus lens of the above-mentioned type.
    • 一种包括第一流体(A)和第二流体(B)的可变焦距透镜,该流体是不混溶的并且具有不同的折射率,其中可选择性地控制可变焦距透镜的透镜功能。 两种流体(A)和(B)的折射率不同,为了获得良好的变焦系数,这些折射率之间的差异相对较高是非常有利的。 许多具有高折射率(大约高于1.7)的油不是无色的,而是倾向于是黄色的。 但是,与对象本身相比,这会导致对象的图像中的颜色变化。 通过校正或补偿由于使用非无色流体作为可变焦距透镜中的第一和/或第二流体而引起的物体本身与对象本身的图像的颜色的变化的相关的修正或补偿来解决 的上述类型。
    • 10. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • WO2004029938A3
    • 2004-07-01
    • PCT/IB0304092
    • 2003-09-18
    • KONINKL PHILIPS ELECTRONICS NVHENDRIKS BERNARDUS H WDE JONGH MATHIJSCOENE WILLEM M J MLIEDENBAUM COEN T H F
    • HENDRIKS BERNARDUS H WDE JONGH MATHIJSCOENE WILLEM M J MLIEDENBAUM COEN T H F
    • 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 non-rotationally-symmetric phase profile in a subsidiary radiation beam. The phase profile varies with an azimuthal angle measured about the optical axis of the beam portion, the phase profile varying such that successively different phases are introduced in at least five locations which are each at successive azimuthal angles (phi1, phi2, phiN) and each at a given radial distance from the optical axis, wherein the phase profile is such that the phases introduced, when taken in modulo 2pi form, successively cycle through 0 to 2pi at least twice, whereby the subsidiary beam spot is provided with an intensity distribution on the information layer which overlaps that of the side-lobe of the main beam spot.
    • 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。 使用用于在辅助辐射束中产生非旋转对称相位轮廓的相位调制元件(40,140)来提供串扰消除。 相位轮廓随着关于光束部分的光轴测量的方位角而变化,相位轮廓变化使得在至少五个位置中引入连续不同的相位,该五个位置各自以连续的方位角(phi1,phi2,phiN)和每个 在距离光轴的给定径向距离处,其中相位轮廓使得当以模2pi形式采取时引入的相位连续地循环通过0至2pi至少两次,由此辅助光束斑点被提供有强度分布 信息层与主光束的旁瓣重叠。