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    • 12. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • US20090296559A1
    • 2009-12-03
    • US11721558
    • 2005-12-15
    • Teunis Willem TukkerJoris Jan VrehenBernardus Hendrikus Wilhelmus HendriksStein Kuiper
    • Teunis Willem TukkerJoris Jan VrehenBernardus Hendrikus Wilhelmus HendriksStein Kuiper
    • G11B7/00
    • G11B7/13925G02B3/04G02B3/12G02B27/0031G11B7/1369G11B2007/0006
    • An optical scanning device for scanning optical record carriers having cover layers of different thicknesses. The scanning device has a first mode for scanning a first optical record carrier, a second mode for scanning a second optical record carrier and a third mode for scanning third optical record carrier. The device comprises an objective lens system and a switchable optical element having a first discrete state and a different, second discrete state. The element comprises: a fluid system including a first fluid and a different, second fluid (19); a wavefront modifier (17); and a fluid system switch for acting on the fluid system to switch between the first and second discrete states of the element. When the element is in the first discrete state, the wavefront modifier (17) is substantially covered by the first fluid, and when the element is in the second discrete state, the wavefront modifier (17) is substantially covered by the second fluid (19). The wavefront modifier includes a non-periodic phase structure including a plurality of stepped annular zones separated by steps, the zones forming a non-periodic radial pattern, and is characterized in that the wavefront modifier further includes an aspherical surface. The scanning device is arranged to operate using the element in the second state to generate spherical aberration when in the second mode, the aspherical surface of the element in the second state compensating for more than half of the spherical aberration due to the objective lens system and second record carrier in combination.
    • 一种用于扫描具有不同厚度的覆盖层的光学记录载体的光学扫描装置。 扫描装置具有用于扫描第一光学记录载体的第一模式,用于扫描第二光学记录载体的第二模式和用于扫描第三光学记录载体的第三模式。 该装置包括物镜系统和具有第一离散状态和不同的第二离散状态的可切换光学元件。 该元件包括:流体系统,包括第一流体和不同的第二流体(19); 波前修正器(17); 以及用于作用在流体系统上以在元件的第一和第二离散状态之间切换的流体系统开关。 当元件处于第一离散状态时,波前修正器(17)基本被第一流体覆盖,并且当元件处于第二离散状态时,波前修正器(17)基本上被第二流体(19)覆盖 )。 波前修正器包括非周期性相位结构,其包括通过台阶隔开的多个阶梯状环形区域,该区域形成非周期性径向图案,其特征在于波前修正器还包括非球面。 扫描装置被设置为在第二状态下使用元件进行操作以在第二模式中产生球面像差,在第二状态下的元件的非球面补偿由于物镜系统导致的球面像差的一半以上, 第二记录载体组合。
    • 15. 发明申请
    • Optical Scanning Device
    • 光学扫描装置
    • US20080117786A1
    • 2008-05-22
    • US11813099
    • 2006-01-06
    • Sjoerd StallingaTeunis Willem Tukker
    • Sjoerd StallingaTeunis Willem Tukker
    • G11B7/00
    • G11B7/1353G11B7/1275
    • An optical scanning device for scanning a first optical record carrier, a second, different, optical record carrier and a third, different, optical record carrier, each record carrier having an information layer. The scanning device includes a radiation source system arranged to produce first, second and third radiation beams for scanning the first, second and third record carriers with first, second and third wavelengths, respectively; and a diffraction structure (34) arranged to introduce a first, second and third wavefront modification into the first, second and third radiation beams, respectively. The diffraction structure includes a surface having a plurality of steps (38), each step having a step height (hj) which controls a form of the first, second and third wavefront modifications, characterized in that the diffraction structure is formed from a material having an Abbe number of less than 50, whereby dispersion is provided between the first, second and third wavelengths in order to further control the form of the first, second and third wavefront modifications.
    • 一种用于扫描第一光学记录载体,第二个不同的光学记录载体和第三个不同的光学记录载体的光学扫描装置,每个记录载体具有信息层。 扫描装置包括一个辐射源系统,被布置成产生用于分别用第一,第二和第三波长扫描第一,第二和第三记录载体的第一,第二和第三辐射束; 以及衍射结构(34),其被布置成分别将第一,第二和第三波前修改引入到第一,第二和第三辐射束中。 衍射结构包括具有多个步骤(38)的表面,每个步骤具有控制第一,第二和第三波前修改形式的台阶高度(h SUB),其特征在于, 衍射结构由阿贝数小于50的材料形成,从而在第一,第二和第三波长之间提供色散,以进一步控制第一,第二和第三波前修改的形式。
    • 16. 发明授权
    • Optical scanning device
    • 光学扫描装置
    • US07161891B2
    • 2007-01-09
    • US10531018
    • 2003-09-15
    • Hendrik Josephus GoossensTeunis Willem Tukker
    • Hendrik Josephus GoossensTeunis Willem Tukker
    • G11B7/00
    • G11B7/1356G11B7/08517G11B7/1369G11B7/1378G11B7/14G11B2007/0013
    • An optical head for use in the scanning of a record carrier, the record carrier having data stored on data tracks therein on a plurality of information layers (3, 4) at a plurality of depths within the record carrier. The optical head comprises: a movable optical element (16) arranged in an optical path to act upon a first radiation beam (12) and a second radiation beam (14) to provide the beams with a different displacement perpendicular to the optical path; and a lens system for focusing said first beam (12) at a first focal point (A) on a first information layer (3) of the record carrier and the focusing of the second beam (14) at a second different focal point (B) on a second information layer (4), wherein a spacing, transverse to the data tracks, between said first and second focal points (A, B) is controllable by varying the configuration of the movable optical element.
    • 一种用于扫描记录载体的光学头,所述记录载体具有存储在其中的多个信息层(3,4)上的数据轨道上的数据,所述多个信息层(3,4)处于所述记录载体内的多个深度。 光头包括:可移动光学元件(16),布置在光路中以作用于第一辐射束(12)和第二辐射束(14),以向垂直于光路的不同位置提供光束; 以及透镜系统,用于将所述第一光束(12)在所述记录载体的第一信息层(3)上的第一焦点(A)处聚焦,并且所述第二光束(14)在第二不同焦点(B ),其中在所述第一和第二焦点(A,B)之间横向于数据轨道的间隔可通过改变可移动光学元件的构造来控制。
    • 17. 发明授权
    • Optical compensator for use in an optical scanning device
    • 用于光学扫描装置的光学补偿器
    • US07773490B2
    • 2010-08-10
    • US11721170
    • 2005-12-02
    • Joris Jan VrehenTeunis Willem Tukker
    • Joris Jan VrehenTeunis Willem Tukker
    • G11B7/135
    • G11B7/1275G02B27/0031G11B7/13922G11B2007/0006G11B2007/0013
    • An optical compensator is included in an optical scanning device for scanning optical record carriers. There are at least two different information layer depths within two different carriers. The scanning device produces first to third radiation beams respectively having different wavelengths for scanning first to third record carriers, respectively. The optical compensator has a non-periodic phase structure through which each radiation beam is arranged to pass. The non-periodic phase structure includes stepped annular zones separated by steps. The zones form a non-periodic radial pattern. The stepped annular zones introduce first to third different wavefront modifications into at least part of the first to third radiation beams, respectively. Radial height variations are included in the stepped annular zones, and are arranged such that non-zero contributions are provided to each wavefront modification by the optical compensator in each stepped annular zone.
    • 光学补偿器包括在用于扫描光学记录载体的光学扫描装置中。 两个不同载体内至少有两个不同的信息层深度。 扫描装置分别产生分别具有用于扫描第一至第三记录载体的不同波长的第一至第三辐射束。 光学补偿器具有非周期性相位结构,每个辐射束通过该相位结构通过。 非周期性相结构包括通过台阶隔开的阶梯状环状区域。 这些区域形成非周期性径向图案。 阶梯形环形区域分别将第一至第三不同波前修改引入至少部分第一至第三辐射束。 径向高度变化包括在阶梯形环形区域中,并且被布置成使得通过光学补偿器在每个阶梯状环形区域中为每个波前修改提供非零的贡献。
    • 19. 发明申请
    • OPTIMAL DETECTION OF TWODOS SIGNALS
    • TWODOS信号的最佳检测
    • US20090279409A1
    • 2009-11-12
    • US11720624
    • 2005-11-25
    • Alexander Marc Van Der LeeCoen Theodorus Hubertus Fran LiedenbaumTeunis Willem Tukker
    • Alexander Marc Van Der LeeCoen Theodorus Hubertus Fran LiedenbaumTeunis Willem Tukker
    • G11B7/135
    • G11B7/133G11B7/0909G11B7/0916G11B7/131G11B7/14
    • 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.
    • 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。
    • 20. 发明申请
    • OPTICAL COMPENSATOR FOR USE IN AN OPTICAL SCANNING DEVICE
    • 用于光学扫描装置的光学补偿器
    • US20090252017A1
    • 2009-10-08
    • US11721170
    • 2005-12-02
    • Joris Jan VrehenTeunis Willem Tukker
    • Joris Jan VrehenTeunis Willem Tukker
    • G11B7/00
    • G11B7/1275G02B27/0031G11B7/13922G11B2007/0006G11B2007/0013
    • An optical compensator for use in an optical scanning device for scanning optical record carriers, there being at least two different information layer depths within two different ones of the carriers, the optical record carriers including a first optical record carrier (3′), a second optical record carrier and a third optical record carrier, the scanning device including a radiation source system (7) for producing first, second and third radiation beams for scanning the first, second and third record carriers, respectively, the first, second and third radiation beams having different predetermined wavelengths. The optical compensator has a non-periodic phase structure through which each of the first, second and third radiation beams are arranged to pass, the non-periodic phase structure including a plurality of stepped annular zones separated by steps, the zones forming a non-periodic radial pattern, the stepped annular zones introducing first, second and third different wavefront modifications into at least part of the first, second and third radiation beams, respectively. The optical compensator includes radial height variations in the plurality of stepped annular zones, the radial height variations being arranged such that non-zero contributions are provided to each of the first, second and third wavefront modifications by the optical compensator in each of the stepped annular zones.
    • 一种用于扫描光学记录载体的光学扫描装置的光学补偿器,在两个不同的载体内存在至少两个不同的信息层深度,光学记录载体包括第一光学记录载体(3'),第二个光学记录载体 光学记录载体和第三光学记录载体,所述扫描装置包括辐射源系统(7),用于产生用于分别扫描第一,第二和第三记录载体的第一,第二和第三辐射束,第一,第二和第三辐射 具有不同预定波长的光束。 光学补偿器具有非周期相位结构,第一,第二和第三辐射束中的每一个被布置成通过,非周期性相位结构包括由台阶分隔开的多个阶梯状环形区域, 所述阶梯形环形区域分别将第一,第二和第三不同波前修改引入到第一,第二和第三辐射束的至少一部分中。 光学补偿器包括多个阶梯形环形区域中的径向高度变化,径向高度变化被布置成使得通过光学补偿器在每个阶梯形环形部分中的每个第一,第二和第三波前修正提供非零贡献 区域。