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    • 3. 发明公开
    • OBJECTIVE LENS FOR OPTICAL PICKUP DEVICE, AND OPTICAL PICKUP DEVICE
    • OBJEKTIVLINSEFÜREINEN OPTISCHEN LESEKOPF UND OPTISCHER LESEKOPF
    • EP2141702A1
    • 2010-01-06
    • EP08740269.9
    • 2008-04-11
    • Konica Minolta Opto, Inc.
    • KIMURA, Tohru
    • G11B7/135G02B13/00G02B13/18
    • G02B13/18G02B3/08G02B5/1895G02B27/0037G02B27/4238G02B27/4283G11B7/1275G11B7/1353G11B7/1374G11B7/13922G11B7/1395G11B2007/0006
    • There are provided an objective lens for an optical pickup device which can record and/or reproduce information on/from an optical disk with high density with the use of a light flux with a short wavelength while keeping a temperature characteristic to be satisfactory in spite of having a plastic objective lens, and the optical pickup device. The objective lens suppresses generation of a spherical aberration even if a temperature change arises, by sacrificing wavelength characteristics and by enhancing temperature characteristics. Such satisfactory temperature characteristics can be acquired by the ring-shaped structure formed as a turning structure on an optical surface of the objective lens, in which the ring-shaped structure includes ring-shaped zones whose number is 3 or more and 30 or less and the ring-shaped structure is formed such that adjoining ring-shaped zones cause a predetermined optical path difference for an incident light flux.
    • 提供了一种用于光学拾取装置的物镜,其可以使用具有短波长的光通量而以高密度从光盘记录和/或再现信息,同时保持温度特性令人满意,尽管如此 具有塑料物镜和光拾取装置。 即使发生温度变化,通过牺牲波长特性和提高温度特性,物镜抑制球面像差的产生。 这种令人满意的温度特性可以通过在物镜的光学表面上形成为转动结构的环形结构来获得,其中环形结构包括数量为3以上且30以下的环状区域, 形成环状结构,使得邻接的环形区域对于入射光束引起预定的光程差。
    • 5. 发明公开
    • OPTICAL PICKUP DEVICE AND, OBJECTIVE OPTICAL UNIT AND OBJECTIVE OPTICAL SYSTEM DESIGNING METHOD
    • 光学传感组件和设计光学透镜系统光学透镜单元和方法
    • EP1858012A1
    • 2007-11-21
    • EP06714553.2
    • 2006-02-24
    • Konica Minolta Opto, Inc.
    • IKENAKA, KiyonoKIMURA, TohruNOMURA, EijiMORI, NobuyoshiSAKAMOTO, KatsuyaHASHIMURA, JunjiOTA, Kohei
    • G11B7/135G02B5/18G02B13/18
    • G11B7/1367G11B7/1275G11B7/1353G11B7/1374G11B7/13922G11B2007/0006
    • An optical pickup device comprising a first light source for outputting a first light beam, a second light source for outputting a second light beam, a third light source for outputting a third light beam, and an objective optical unit having an annular-structure first light path difference imparting structure and an annular-structure second light path difference imparting structure, wherein the magnifications of the objective optical unit when the first, second and third beams are incident to the objective optical unit are almost the same, the first light path difference imparting structure imparts a specified light path difference to the first light beam, and changes the spherical aberrations of all the first light beam, second light beam and third light beam to one of under and over directions, the second light path difference imparting structure imparts a specified light path difference to the first light beam, and changes the spherical aberration of only the second light beam out of the first light beam, second light beam and third light beam to the other direction different from the one of under and over directions.
    • 一种光拾取装置,其包括用于输出铃声的第一光束,第二光源,用于输出铃声的第二光束,第三光源,用于输出铃声的第三光束,并具有在环形设计结构firstlightdesign物镜光学单元上的第一光源 程差赋予结构和环形设计结构的第二光路差赋予结构,worin物镜光学单元的倍率。当第一,第二和第三光束入射到物镜光学单元几乎是一样的,第一光程差赋予 结构赋予一个指定的光程差的第一光束,并改变所有的第一光束,第二光束和第三光束的球面像差的理解和超过方向,第二光程差赋予结构赋予一个指定的 光程差的第一光束,并仅改变所述第二光束的球面像差进行 的第一光束,第二光束和第三光束以从下方和上方方向上的一个不同的其他方向。
    • 6. 发明公开
    • OPTICAL PICKUP DEVICE AND OBJECTIVE OPTICAL ELEMENT
    • OPTISCHE PICKUP-ANORDNUNG UND OPTISCHOP OBJEKTIVELEMENT
    • EP2144238A1
    • 2010-01-13
    • EP08740035.4
    • 2008-04-08
    • Konica Minolta Opto, Inc.
    • NAKAMURA, KentarouKIMURA, Tohru
    • G11B7/135
    • G11B7/1353G11B7/1374G11B7/13922G11B2007/0006
    • There are provided an optical pickup device which can satisfactorily record and/or reproduce information on different kinds of optical information recording medium in spite of compactness, and an objective optical element used for the optical pickup device. The optical functional surface of the objective optical element includes at least two areas of a central area including an optical axis and a peripheral area surrounding the central area. An optical path difference providing structure in the central area is a structure obtained by overlapping a first central basic structure and a second central basic structure which are in a shape of ring-shaped zones divided by step differences, with each other. An optical path difference providing structure in the peripheral area is a structure obtained by overlapping a first peripheral basic structure and a second peripheral basic structure which are in a shape of ring-shaped zones divided by step differences, with each other.
    • 提供了一种即使紧凑地可以令人满意地记录和/或再现不同种类的光学信息记录介质上的信息的光学拾取装置和用于光学拾取装置的物镜光学元件。 物镜光学元件的光学功能表面包括包括光轴和围绕中心区域的周边区域的中心区域的至少两个区域。 中心区域中的光程差提供结构是通过将由阶梯差除以环形区域的形状的第一中心基础结构和第二中心基本结构彼此重叠而获得的结构。 外围区域的光程差提供结构是通过将由阶梯差分割成环状区域的第一周边基础结构和第二周边基础结构彼此重叠而获得的结构。
    • 7. 发明公开
    • Optical system, optical pickup device, recording or/and reproducing apparatus
    • Optisches System,optische Abtastvorrichtung,Aufzeichnungs- und / oder Wiedergabegertt
    • EP1494225A2
    • 2005-01-05
    • EP04253778.7
    • 2004-06-24
    • Koninklijke Philips Electronics N.V.Konica Minolta Opto, Inc.
    • HENDRIKS, Bernardus.H.WMORI, NobuyoshiKIMURA, Tohru
    • G11B7/135
    • G11B7/1367G11B7/1378G11B7/13925G11B2007/13727
    • An optical system for use in an optical pickup device for recording and/or reproducing information on an optical recording media, the optical system having an optical axis and comprising: an objective system for converging a light beam emitted from a light source on the optical recording media; an optical aberration correcting element comprising two lenses arranged on an optical path between the light source and the objective system and having an adjustable distance in the direction of the optical axis, the optical aberration correcting element comprising a ring-shaped phase structure formed in at least one lens surface of the optical aberration correcting element, and wherein the ring shaped phase structure is non-periodic and comprises a plurality of concentric ring surfaces k (k = 1...N), and each of the ring surfaces has a step in the direction of the optical axis between the adjacent ring surface.
    • 一种用于光学拾取装置中用于在光学记录介质上记录和/或再现信息的光学系统,所述光学系统具有光轴并且包括:用于将从光源发射的光束会聚在光学记录上的物镜系统 媒体; 光学像差校正元件,包括布置在光源和物镜系统之间的光路上并且具有在光轴方向上的可调节距离的两个透镜,所述光学像差校正元件包括至少形成的环形相位结构 光学像差校正元件的一个透镜表面,并且其中所述环形相结构是非周期性的并且包括多个同心环表面k(k = 1 ... N),并且每个所述环表面具有 相邻环表面之间光轴的方向。