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    • 42. 发明申请
    • Optical Pickup Apparatus
    • 光学拾取装置
    • US20090207716A1
    • 2009-08-20
    • US12294604
    • 2007-03-12
    • Kiyono Tateyama
    • Kiyono Tateyama
    • G11B7/135
    • G11B7/135G11B7/1275G11B7/1374G11B7/1378G11B7/13922G11B2007/0006G11B2007/13727
    • An optical pickup apparatus includes: a first light source; a second light source; a light-converging optical system including a coupling lens and an objective lens; and a photodetector. The optical pickup apparatus is capable of recording and/or reproducing information by converging a light flux from each of the first and second light sources with the light-converging optical system on an information recording surface of each of first and second optical information recording media through a protective layer, and by detecting the light flux reflected from the information recording surface and passing through the light-converging optical system again, on the photodetector. The optical pickup apparatus satisfies predetermined conditions according to an optical path length from each of first and second light sources and the information recording medium, a magnification of the objective lens, and a magnification of the light-converging optical system.
    • 一种光学拾取装置,包括:第一光源; 第二光源; 包括耦合透镜和物镜的聚光光学系统; 和光电检测器。 光拾取装置能够通过将来自第一和第二光源中的每一个的光束与聚光光学系统聚焦在第一和第二光学信息记录介质的信息记录表面上来记录和/或再现信息,通过 保护层,并且通过检测从信息记录表面反射并在光检测器上再次通过聚光光学系统的光束。 光拾取装置根据来自第一和第二光源和信息记录介质中的每一个的光路长度,物镜的放大率和聚光光学系统的放大率而满足预定条件。
    • 43. 发明申请
    • COMPOSITE OPTICAL DEVICE
    • 复合光学器件
    • US20090168205A1
    • 2009-07-02
    • US12294345
    • 2007-03-02
    • Kenji Inoue
    • Kenji Inoue
    • G02B9/00G02B27/42
    • G02B5/1895G02B3/00G02B3/0037G02B3/08G02B3/10G11B7/1353G11B2007/13727
    • A composite optical device 1 includes a first optical section 10 having an optical functional surface 11 and a second optical section 20 bonded to the first optical section 10 on the optical functional surface 11. The optical functional surface 11 includes a smooth part 13 and a concave-convex part 12 adjacent to each other, and is constructed so that a position P2, along a normal direction of the smooth part 13, of a concave bottom of the concave-convex part 12 can be closer to the center of the first optical section 10 than a position P1 along the normal direction of an end of the smooth part 13 on a side of the concave-convex part 12 in a boundary vicinity portion NR between the smooth part 13 and the concave-convex part 12.
    • 复合光学器件1包括具有光学功能表面11的第一光学部分10和在光学功能表面11上接合到第一光学部分10的第二光学部分20.光学功能表面11包括平滑部分13和凹部 凸部12彼此相邻,并且构造成使得沿着平滑部13的法线方向的凹凸部12的凹入底部的位置P2可以更靠近第一光学部的中心 10处于平滑部13与凹凸部12之间的边界附近部NR中的凹凸部12侧的平滑部13的端部的法线方向的位置P1。
    • 45. 发明授权
    • Tilt control method and optical disc apparatus
    • 倾斜控制方法和光盘装置
    • US07535808B2
    • 2009-05-19
    • US11039805
    • 2005-01-24
    • Tsutomu IshimotoKimihiro Saito
    • Tsutomu IshimotoKimihiro Saito
    • G11B5/58
    • G11B7/1387G11B7/0956G11B2007/13727
    • According to a preferred embodiment of the present invention, in order to provide a tilt control method and optical disc apparatus capable of exerting control to eliminate tilt and capable of carrying out an appropriate gap servo operation, a light gathering element positioned facing a disc recordable with a signal, and capable of gathering light irradiated from a light source as near-field light at a position where a distance to the disc constitutes a first distance is made to come into contact with the disc (step 2), and tilt is controlled with the light gathering element in contact with the disc (steps 3 to 7). As a result, tilting with respect to the disc is adjusted with the SIL in contact with the disc, tilting can be eliminated in a reliable manner, and a gap servo operation can be carried out in an appropriate manner.
    • 根据本发明的优选实施例,为了提供能够进行控制以消除倾斜并能够执行适当的间隙伺服操作的倾斜控制方法和光盘装置,定位成面向可记录的盘的光收集元件 信号,并且能够将从光源照射的光收集在与盘的距离构成第一距离的位置处的近场光接触盘(步骤2),并且倾斜被控制 所述聚光元件与所述盘接触(步骤3至7)。 结果,通过SIL与盘接触来调节相对于盘的倾斜,可以以可靠的方式消除倾斜,并且可以以适当的方式执行间隙伺服操作。
    • 48. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • US20090028037A1
    • 2009-01-29
    • US11573946
    • 2005-07-25
    • Coen Adrianus VerschurenFerry Zijp
    • Coen Adrianus VerschurenFerry Zijp
    • G11B7/135
    • G11B7/0908G11B7/121G11B7/1387G11B2007/13727
    • An optical scanning device for scanning a record carrier (22), the record carrier having an outer face (24), wherein the optical scanning device comprises a radiation source system (2) arranged to generate radiation (3); an objective system (20) having an exit face (24), the objective system being arranged between the radiation source system and the record carrier; a radiation detector arrangement for generating detector signals representing information detected in the radiation after interaction with the record carrier; and a position control system (42) for controlling a gap size of a gap between the exit face of the objective system and the outer face of the record carrier, the position control system providing for evanescent coupling of the radiation across the gap. The optical scanning device is arranged to process the detector signals to generate error signals suitable for controlling characteristics of the device during scanning of a record carrier, the error signals including a first error signal (E1) for use by the position control system for controlling the gap size. The optical scanning device is characterised in that the optical scanning device is arranged to generate a second error signal (E2), different to the first error signal, for use by the position control system for controlling the gap size.
    • 一种用于扫描记录载体(22)的光学扫描装置,所述记录载体具有外表面(24),其中所述光学扫描装置包括布置成产生辐射(3)的辐射源系统(2); 具有出射面(24)的物镜系统(20),所述物镜系统布置在所述辐射源系统和所述记录载体之间; 辐射检测器装置,用于在与记录载体相互作用之后产生表示在辐射中检测到的信息的检测器信号; 以及位置控制系统(42),用于控制物镜系统的出射面和记录载体的外表面之间的间隙的间隙尺寸,位置控制系统提供辐射跨越缝隙的ev逝耦合。 光扫描装置被配置为处理检测器信号以产生适于在扫描记录载体期间控制装置的特性的误差信号,该误差信号包括由位置控制系统用于控制记录载体的第一误差信号(E1) 间隙大小。 光学扫描装置的特征在于,光学扫描装置被布置成产生与第一误差信号不同的第二误差信号(E2),供位置控制系统用于控制间隙尺寸。
    • 49. 发明授权
    • Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith
    • 物镜,光学元件,光学拾取装置以及配备有其的光学信息记录和/或再现装置
    • US07483358B2
    • 2009-01-27
    • US12052359
    • 2008-03-20
    • Tohru KimuraKatsuya SakamotoYuichi Atarashi
    • Tohru KimuraKatsuya SakamotoYuichi Atarashi
    • G11B7/00
    • G11B7/1374G11B7/1275G11B7/1353G11B7/139G11B7/13925G11B2007/0006G11B2007/13727
    • A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1>|n3 |, and the hybrid objective lens converges a n1-th, n2-th and N3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.
    • 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n1,n2和n3分别是当各个光束入射到第一,第二和第三光束时具有波长λ1,λ2和λ3的第一,第二和第三光束中的每一个的衍射光线中具有最大光量的衍射光线的衍射级数 衍射结构分别满足下列公式:<?in-line-formula description =“In-line formula”end =“lead”?> | n1 |> | n2 |,| n1> | n3 | ?在线公式描述=“内联公式”end =“tail”?>混合物镜会聚第一,第二和第三光通量的第n1,第n2和第N3阶衍射光线 分别在第一,第二蚂蚁第三光学信息记录介质的信息记录面上分别形成在相应的规定的必要图像侧数值孔内的适当的波前。