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    Diffraction optical device and optical pickup device using the same
    4.
    发明公开
    Diffraction optical device and optical pickup device using the same 审中-公开
    Optische Beugungsvorrichtung und optischesWiedergabegerätzu ihrer Verwendung

    公开(公告)号：EP2202739A1

    公开(公告)日：2010-06-30

    申请号：EP10157733.6

    申请日：2004-04-23

    申请人： Konica Minolta Opto, Inc.

    发明人： Takada, Kyu ,  Hashimura, Junji ,  Ori, Yuichiro ,  Kimura, Toru

    IPC分类号： G11B7/135

    CPC分类号： G11B7/13925 ,  G02B5/1876 ,  G02B27/4238 ,  G02B27/4272 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/13922 ,  G11B2007/0006

    摘要： A diffractive optical element comprises a first diffraction surface (17a) that does not diffract a light beam (21a) having a first wavelength λ1 nor a light beam (21a) having a third wavelength λ3 and diffracts a light beam (21b) having a second wavelength λ2 and a second diffraction surface (17b) that does not diffract the light beam (21a) having the first wavelength λ1 nor the light beam (21b) having the second wavelength λ2 and diffracts the light beam (21c) having the third wavelength. The first to third wavelengths are different from one another. The first and second diffraction surfaces satisfy the condition Λ / λ ≥ 8 where Λ is the smallest pitch among the pitches each of which represents the width causing the phase difference of one wavelength when wave fronts nearest to each other are connected at the adjacent steps of the diffraction surface, and λ is the wavelength of the diffracted light.

    摘要翻译： 衍射光学元件包括不衍射具有第一波长λ1的光束（21a）的第一衍射面（17a）和具有第三波长»3的光束（21a），并衍射具有第三波长»3的光束（21b） 不会衍射具有第一波长»1的光束（21a）的第二波长»2和第二衍射面（17b），也不衍射具有第二波长»2的光束（21b），并衍射光束（21c） 具有第三波长。 第一至第三波长彼此不同。 第一和第二衍射面满足条件>»‰‰‰‰‰>>>> steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps steps 的衍射面，λ是衍射光的波长。

    OBJECT LENS FOR OPTICAL PICKUP DEVICE, OPTICAL PICKUP DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
    5.
    发明公开
    OBJECT LENS FOR OPTICAL PICKUP DEVICE, OPTICAL PICKUP DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE 审中-公开
    物镜光学图像捕获装置，光学图像捕获装置和光学信息记录 - / - 播放设备

    公开(公告)号：EP1544652A4

    公开(公告)日：2009-12-02

    申请号：EP03791401

    申请日：2003-08-28

    申请人： KONICA MINOLTA HOLDINGS INC

    发明人： KIMURA TOHRU

    IPC分类号： G02B13/00 ,  G02B3/08 ,  G02B5/18 ,  G02B13/18 ,  G02B27/00 ,  G11B7/09 ,  G11B7/135

    CPC分类号： G11B7/1353 ,  G02B5/1895 ,  G02B27/0037 ,  G02B27/4238 ,  G02B27/4283 ,  G02B27/4294 ,  G11B7/1374 ,  G11B7/1392

    摘要： An objective lens used for an optical pickup device wherein the optical pickup device includes: light source; and a converging optical system including the objective lens for converging a light beam emitted from the light source to an information recording surface of an optical information recording medium, and the optical pickup device is capable of recording and/or reproducing information by converging the light beam emitted from the light source to the information recording surface of the optical information recording medium with the converging optical system, the objective lens being a plastic single lens and satisfying following formulas when NA is an image-side numerical aperture required for recording and/or reproducing information to the optical information recording medium and f (mm) is a focal length of the objective lens. Even in a plastic single lens having a high NA, thermal aberration does not increase excessively, and in a plastic single lens of a refraction type, thermal aberration within the temperature range of practical use in an optical pickup device is suppressed within an allowable range. NA ≥ 0.8 1.0 > f > 0.2

    OPTICAL PICKUP APPARATUS, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS
    6.
    发明公开
    OPTICAL PICKUP APPARATUS, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS 审中-公开
    光学的摇篮，光学镜片元件和光学信息记录和再现

    公开(公告)号：EP2001020A2

    公开(公告)日：2008-12-10

    申请号：EP07714667.8

    申请日：2007-02-21

    申请人： Konica Minolta Opto, Inc.

    发明人： NAKAMURA, Kentarou ,  NOMURA, Eiji ,  MORI, Nobuyoshi ,  OTA, Kohei

    IPC分类号： G11B7/135 ,  G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/09 ,  G11B7/125

    CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

    摘要： Provided are an optical pickup apparatus, an objective optical element, and an optical information recording and reproducing apparatus, capable of recording and/or reproducing information in a compatible way to different types of optical discs. The optical pickup apparatus comprises a first light source that emits a first light flux, a second light source that emits a second light flux, a third light source that emits a third light flux, and an objective optical element. The optical surface of the objective optical element has at least two areas of a central area and a peripheral area surrounding the central area, wherein the central area has a first optical path difference giving structure and the peripheral area has a second optical path difference giving structure. The objective optical element focuses the light fluxes passing through its central and peripheral areas on the information recording surfaces of respective prescribed optical discs so that the information can be recorded and/or reproduced. The first optical path difference giving structure is formed by superimposing a first basic structure and a second basic structure having respective predetermined structures on each other.

    摘要翻译： 提供的是在光拾取装置的物镜光学元件，以及光学信息记录和再现设备，其能够记录和/或再现信息的一个兼容的方式以不同类型的光盘。 的光学拾取装置包括：第一光源没有发射第一光通量，第二光源没有发射第二光通量，第三光源没有发射第三光通量，以及物镜光学元件。 对物光学元件的光学面具有中央区域的至少两个区域和环绕中心区域，worin中央区域的周边区域具有第一光程差赋予结构和周边区域具有第二光程差赋予结构 ， 对物光学元件聚焦通过它的中心区域和周边区域上传递信息记录规定光盘respectivement的表面的光束所以没有信息可被记录和/或再现。 第一光程差赋予结构是通过叠加第一基本结构并具有相互respectivement有预定结构的第二基本结构形成。

    Aberration compensating optical element, optical system, optical pickup device, recorder and reproducer
    7.
    发明公开
    Aberration compensating optical element, optical system, optical pickup device, recorder and reproducer 有权
    校正光学元件，用于像差的光学系统，光学拾取装置用于记录和再现，并

    公开(公告)号：EP1276104A3

    公开(公告)日：2007-07-18

    申请号：EP02254657.6

    申请日：2002-07-03

    申请人： Konica Minolta Opto, Inc.

    发明人： Kimura, Tohru, c/o Konica Corporation

    IPC分类号： G11B7/135

    CPC分类号： G02B27/0037 ,  G02B27/4238 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An aberration compensating optical element includes: a diffractive structure having a plurality of ring-shaped zone steps formed into substantially concentric circles on at least one surface of the aberration compensating optical element; wherein the aberration compensating optical element is adapted for being disposed on an optical path between a light source for emitting a light having a wavelength of not more than 550nm, and an objective lens made of a material having an Abbe constant of not more than 95.0 at a d-line; and wherein the following inequality is satisfied: P λ1 λ0 λ2 , where P λ0 is a paraxial power (mm -1 ) of the aberration compensating optical element at the wavelength λ 0 of the light emitted from the light source; P λ1 is a paraxial power (mm -1 ) of the aberration compensating optical element at a wavelength λ 1 which is 10nm shorter than the wavelength λ 0 ; and P λ2 is a paraxial power (mm -1 ) of the aberration compensating optical element at a wavelength λ 2 which is 10nm longer than the wavelength λ 0 .

    Converging optical system of optical pickup device
    8.
    发明公开
    Converging optical system of optical pickup device 审中-公开
    会聚的光扫描装置的光学系统

    公开(公告)号：EP1465170A3

    公开(公告)日：2007-05-16

    申请号：EP04101193.3

    申请日：2004-03-23

    申请人： KONICA MINOLTA HOLDINGS, INC.

    发明人： Ikenana, Kiyono

    IPC分类号： G11B7/135

    CPC分类号： G02B5/1895 ,  G02B27/108 ,  G02B27/1086 ,  G02B27/141 ,  G02B27/145 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： A light converging optical system for use in an optical pickup apparatus which conducts reproducing and/or recording information for a first optical information recording medium (31) and a second optical information recording medium (32) using light fluxes emitted by a first light source and a second light source respectively, includes an objective optical element (40) being a single lens; a first optical element (50) being a single lens; and a phase difference giving structure formed on at least one optical surface of optical surfaces of the objective optical element and the first optical element and for giving a phase difference, the phase difference giving structure having a chromatic aberration correcting function for correcting a chromatic aberration in such a way that when the wavelength of a light flux emitted from the first light source varies, the phase difference giving structure corrects a varied aberration quantity before and after the wavelength variation.

    Converging optical system of optical pickup device
    9.
    发明公开
    Converging optical system of optical pickup device 审中-公开
    Konvergierendes optisches System einer optischen Abtastvorrichtung

    公开(公告)号：EP1465170A2

    公开(公告)日：2004-10-06

    申请号：EP04101193.3

    申请日：2004-03-23

    申请人： KONICA MINOLTA HOLDINGS, INC.

    发明人： Ikenana, Kiyono

    IPC分类号： G11B7/135

    CPC分类号： G02B5/1895 ,  G02B27/108 ,  G02B27/1086 ,  G02B27/141 ,  G02B27/145 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： A light converging optical system for use in an optical pickup apparatus which conducts reproducing and/or recording information for a first optical information recording medium and a second optical information recording medium using light fluxes emitted by a first light source and a second light source respectively, includes an objective optical element being a single lens; a first optical element being a single lens; and a phase difference giving structure formed on at least one optical surface of optical surfaces of the objective optical element and the first optical element and for giving a phase difference, the phase difference giving structure having a chromatic aberration correcting function for correcting a chromatic aberration in such a way that when the wavelength of a light flux emitted from the first light source varies, the phase difference giving structure corrects a varied aberration quantity before and after the wavelength variation.

    摘要翻译： 一种用于光拾取装置的聚光光学系统，其使用由第一光源发射的光束对第一光学信息记录介质（31）和第二光学信息记录介质（32）进行再现和/或记录信息，以及 第二光源分别包括作为单个透镜的物镜光学元件（40）; 第一光学元件（50）是单个透镜; 以及形成在物镜光学元件和第一光学元件的光学表面的至少一个光学表面上并且用于给出相位差的相位差给定结构，该相位差给出结构具有用于校正色差的色差校正功能 这样，当从第一光源发射的光束的波长变化时，相位差给出结构校正波长变化之前和之后的变化的像差量。