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    • 2. 发明申请
    • SWITCHABLE OPTICAL ELEMENT
    • 可切换光学元件
    • US20090225642A1
    • 2009-09-10
    • US11719857
    • 2005-11-21
    • Teunis Willem TukkerBernardus Hendrikus Wilhelmus HendriksStein KuiperJoris Jan VrehenPetrus Theodorus Jutte
    • Teunis Willem TukkerBernardus Hendrikus Wilhelmus HendriksStein KuiperJoris Jan VrehenPetrus Theodorus Jutte
    • G11B7/135G02B3/14
    • G02B26/005G02B3/14
    • A switchable optical element having an optical path (OP) for a radiation beam and having a first state and a second state, the element comprising: a first fluid (12) and a second, different, fluid (14) which are immiscible and which are separated from each other by a fluid meniscus (16); a first, transparent, wall part and a second, transparent, wall part spaced from each other along the optical path; and a fluid switching system which is arranged to apply forces to the first and/or the second fluid in order to switch the element between the first and the second state. The first wall part includes a non-planar wavefront modifier (28), and wherein the fluid switching system is arranged to apply the forces so that when the element is in the first state, the first wall part is covered by the first fluid (12); and when the element is in the second state, the first wall part is covered by the second fluid (14). The switchable optical element is characterised in that the fluid switching system is arranged to switch between the first state and the second state such that when the element is in the first state the second wall part is covered by the second fluid, and when the element is in the second state the second wall part is covered by the first fluid. When the element is in both the first state and the second state, at least part of the fluid meniscus (16) is located on the optical path.
    • 一种具有用于辐射束的光路(OP)并具有第一状态和第二状态的可切换光学元件,所述元件包括:第一流体(12)和与第二流体不同的第二流体(14),并且其中 通过流体弯液面(16)彼此分离; 第一,透明的壁部分和第二透明壁部分,沿着光路彼此间隔开; 以及布置成向第一和/或第二流体施加力以便在第一和第二状态之间切换元件的流体切换系统。 第一壁部分包括非平面波前修正器(28),并且其中流体切换系统被布置成施加力,使得当元件处于第一状态时,第一壁部分被第一流体(12 ); 并且当元件处于第二状态时,第一壁部分被第二流体(14)覆盖。 可切换光学元件的特征在于,流体切换系统被布置成在第一状态和第二状态之间切换,使得当元件处于第一状态时,第二壁部被第二流体覆盖,并且当元件为 在第二状态下,第二壁部被第一流体覆盖。 当元件处于第一状态和第二状态时,流体弯液面(16)的至少一部分位于光路上。
    • 3. 发明申请
    • Optical Pick-Up for Use in a Multi-Disc Optical Player and Method for Correcting Optical Aberrations in Such an Optical Pick-Up Unit
    • 用于多光盘光学播放器的光学拾取器和用于校正这种光学拾取单元中的光学像差的方法
    • US20080259770A1
    • 2008-10-23
    • US11792275
    • 2005-12-01
    • Petrus Theodorus JutteJoris Jan Vrehen
    • Petrus Theodorus JutteJoris Jan Vrehen
    • G11B7/00
    • G11B7/1392G11B7/08582G11B7/13925
    • The present invention concerns to an optical pick-up unit for use in a multi-disc system, for scanning a first type of record carriers and at least a second type of record carriers, the second type of record carriers having an information density different from an information density of the first type of record carriers, the optical pick-up unit comprising at least two optical branches (3, 5, 7), a first optical branch (3) having a first radiation source (39) emitting a first radiation beam with a first wavelength, which first radiation beam propagates along a first optical path (4), and a second optical branch (5, 7) having a second radiation source (51, 59) emitting a second radiation beam with a second wavelength, which second radiation beam propagates along a second optical path (6, 8), the first and the second wavelengths and the first and the second optical path (4, 6, 8) being different and the first and the second radiation beam propagating—after having passed the first and the second optical path (4, 6, 8)—along a common optical path (66) comprising an objective lens (73) for focusing the first radiation beam or the second radiation beam at the record carrier (35). The optical pick-up unit is characterized in that at least one of the optical branches (3, 5, 7) comprises an optical component (41, 53, 61) that is movable for correcting an optical aberration in the first or second radiation beam.
    • 本发明涉及一种用于多盘系统的光拾取单元,用于扫描第一类型的记录载体和至少第二类记录载体,第二类型的记录载体具有不同于 第一类型的记录载体的信息密度,所述光学拾取单元包括至少两个光学分支(3,5,7),第一光学分支(3),其具有发射第一辐射的第一辐射源(39) 第一辐射束沿着第一光路(4)传播的第一波长的光束和具有发射具有第二波长的第二辐射束的第二辐射源(51,59)的第二光分支(5,7) 所述第二辐射束沿着第二光路(6,8)传播,所述第一和第二波长以及所述第一和第二光路(4,6,8)是不同的,并且所述第一和第二辐射束传播 已经过去了 他的第一和第二光路(4,6,8) - 包括用于将第一辐射束或第二辐射束聚焦在记录载体(35)处的物镜(73)的公共光路(66)。 光学拾取单元的特征在于,至少一个光学分支(3,5,7)包括可移动的光学部件(41,53,61),用于校正第一或第二辐射束中的光学像差 。
    • 7. 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。
    • 10. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • US20100046347A1
    • 2010-02-25
    • US11814012
    • 2006-01-18
    • Teunis Willem TukkerJoris Jan Vrehen
    • Teunis Willem TukkerJoris Jan Vrehen
    • G11B7/135
    • G11B7/1275G11B7/1367G11B7/13922G11B2007/0006
    • An optical scanning device for scanning optical record carriers, the optical record carriers including a first optical record carrier, 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 said first, second and third record carriers, respectively, in first, second and third scanning modes, said first, second and third radiation beams having different predetermined wavelengths, the scanning device comprising an objective lens and an optical compensator, the optical compensator having a non-periodic phase structure through which each of said first, second and third radiation beams are arranged to pass, said 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, characterized in that said objective lens is arranged to apply a focus offset when scanning said first record carrier, which focus offset is arranged to provide a phase modification which, in combination with said optical compensator, compensates spherical aberration in the first radiation beam.
    • 一种用于扫描光学记录载体的光学扫描装置,所述光学记录载体包括第一光学记录载体,第二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),用于产生第一,第二和 用于分别以第一,第二和第三扫描模式扫描所述第一,第二和第三记录载体的第三辐射束,所述第一,第二和第三辐射束具有不同的预定波长,所述扫描装置包括物镜和光学补偿器, 所述光学补偿器具有非周期相位结构,所述第一,第二和第三辐射束中的每一个被布置成通过,所述非周期性相位结构包括由台阶分开的多个阶梯状环形区域, 周期性径向图案,阶梯形环形区域引入第一,第二和第三不同波前修改 分别是第一,第二和第三辐射束的至少一部分,其特征在于,所述物镜被布置成在扫描所述第一记录载体时施加聚焦偏移,所述聚焦偏移被布置成提供相位改变,其结合 所述光学补偿器补偿第一辐射束中的球面像差。