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    1.
    发明专利
    未知

    公开(公告)号：AT521965T

    公开(公告)日：2011-09-15

    申请号：AT05252748

    申请日：2005-05-04

    Applicant: KONICA MINOLTA OPTO INC

    Inventor： KIMURA TOHRU ,  SAKAMOTO KATSUYA

    IPC: G02B5/18 ,  G11B7/135 ,  G11B7/00 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/139 ,  G11B7/1392

    Abstract: An optical pick-up apparatus comprising: a first light source emitting a first light flux; a second light source emitting a second light flux; a third light source emitting a third light flux; and an optical element, wherein the optical element has a first optical surface having a first area including an optical axis of the optical element, and a second area positioned outside the first area, the second area includes a light-shielding structure being capable of substantially shielding the third light flux and being capable of transmitting the first light flux and the second light flux.

    Beam shaping element, light source device and optical pickup device
    5.
    发明专利
    Beam shaping element, light source device and optical pickup device 有权
    光束形状元件，光源器件和光学拾取器件

    公开(公告)号：JP2006098537A

    公开(公告)日：2006-04-13

    申请号：JP2004282433

    申请日：2004-09-28

    Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

    Inventor： SAKAMOTO KATSUYA

    IPC: G02B3/06 ,  G02B1/04 ,  G02B13/00 ,  G02B13/18 ,  G02B27/09 ,  G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To provide a beam shaping element made of plastic which can emits a divergent luminous flux whose cross-sectional shape is approximately circular while suppressing the occurrence of an astigmatic difference with change of environmental temperature, and also can maintain highly accurate optical characteristics for many hours, and a light source device, and an optical pickup device. SOLUTION: The beam shaping element of this invention is a single-ball optical element which converts a luminous flux which is emitted from a light source, and has different angles of radiation in the horizontal direction and the vertical direction into a luminous flux whose cross-sectional shape is roughly circular, and emits the luminous flux, and the beam shaping element is characterized in that the element is constituted of resin containing a polymer which has fatty ring type structure, and also the linear expansion coefficient α n of the element fulfills a conditional expression: 5.0×10 -5 n -5 and the element suppresses the amount of the occurrence of the astigmatic difference with change of the environmental temperature. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种塑料制成的光束整形元件，其能够发射截面形状近似圆形的发散光束，同时抑制与环境温度变化的散光差异的发生，并且还可以保持 高精度的光学特性多小时，以及光源装置和光学拾取装置。 解决方案：本发明的光束整形元件是一种单球光学元件，其转换从光源发射的光束，并且在水平方向和垂直方向上具有不同的辐射角成为光通量 其横截面形状大致为圆形，并且发射光束，并且光束成形元件的特征在于，该元件由含有脂肪环型结构的聚合物的树脂构成，并且线膨胀系数α 该元素的n 满足条件表达式：5.0×10 -5 <α n <8.0×10 -5 ， 元素抑制随着环境温度变化而出现散光差异的量。 版权所有（C）2006，JPO＆NCIPI

    OPTICAL PICKUP DEVICE
    7.
    发明公开
    OPTICAL PICKUP DEVICE 审中-公开
    OPTISCHE ERFASSUNGSEINRICHTUNG

    公开(公告)号：EP1619679A4

    公开(公告)日：2008-07-02

    申请号：EP04728452

    申请日：2004-04-20

    Applicant: KONICA MINOLTA OPTO INC

    Inventor： SAKAMOTO KATSUYA ,  YOSHIDA FUMIAKI

    IPC: G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC classification number: G11B7/1378 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1392 ,  G11B2007/0006

    Abstract: An optical pickup device for reproducing and recording information from and in an optical information recording medium is disclosed which comprises a light source for emitting a light flux having wavelengths of 200-700 nm and a light intensity distribution that is generally a Gaussian distribution, a light intensity distribution converting device for changing the light flux incoming from the light source into one having a desired light intensity distribution wherein the intensity of the outgoing light passing through the outermost portion of the effective diameter is within 45-95% of the intensity of the outgoing light passing through the light axis portion, and an objective optical device for focusing the light flux coming out of the light intensity distribution converting device on the information recording surface of the optical information recording medium.

    Abstract translation: 公开了一种用于从光信息记录介质再现和记录信息的光学拾取装置，其包括用于发射具有200-700nm的波长和通常为高斯分布的光强度分布的光通量的光源，光 该光强分布转换装置用于将从光源进入的光通量改变为具有期望的光强度分布的光通量，其中穿过有效直径的最外部分的出射光的强度在出射强度的45-95％ 通过光轴部分的光以及用于将来自光强度分布转换装置的光通量聚焦在光学信息记录介质的信息记录表面上的物镜光学装置。

    OPTICAL PICKUP DEVICE AND, OBJECTIVE OPTICAL UNIT AND OBJECTIVE OPTICAL SYSTEM DESIGNING METHOD
    8.
    发明公开
    OPTICAL PICKUP DEVICE AND, OBJECTIVE OPTICAL UNIT AND OBJECTIVE OPTICAL SYSTEM DESIGNING METHOD 审中-公开
    光学传感组件和设计光学透镜系统光学透镜单元和方法

    公开(公告)号：EP1858012A4

    公开(公告)日：2008-12-10

    申请号：EP06714553

    申请日：2006-02-24

    Applicant: KONICA MINOLTA OPTO INC

    Inventor： IKENAKA KIYONO ,  KIMURA TOHRU ,  NOMURA EIJI ,  MORI NOBUYOSHI ,  SAKAMOTO KATSUYA ,  HASHIMURA JUNJI ,  OTA KOHEI

    IPC: G11B7/135 ,  G02B5/18 ,  G02B13/18

    CPC classification number: G11B7/1367 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

    Abstract: 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.

    The optical pickup device
    9.
    发明专利
    The optical pickup device 审中-公开
    光学拾取器件

    公开(公告)号：JP2005317168A

    公开(公告)日：2005-11-10

    申请号：JP2004203157

    申请日：2004-07-09

    Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

    Inventor： SAKAMOTO KATSUYA ,  TOTSUKA HIDEKAZU ,  SHIN YUICHI ,  OTA KOHEI ,  YAMASHITA KIYOSHI

    IPC: G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device capable of appropriately performing shaping of a cross-sectional shape of each light flux and conversion of intensity distribution even if a light source unit is used in which a plurality of light emitting points are adjacently provided. SOLUTION: The optical pickup unit 10 is configured with a light source unit 20 in which a plurality of light emitting points emitting lights in different wavelengths are adjacently provided, a beam shaping element 40 for shaping the light flux to have a divergence angle different from that at the incidence, a coupling element 12, and an objective optical element 15 for converging the emitted light flux from the coupling element on a recording face of an optical information recording medium for forming a condensing spot. The distance from each light emitting point to a surface of a protection layer for protecting the recording surface is stabilized irrespective of kinds of the optical information recording medium, and the condensing spot is formed by using a light flux of a long wavelength for the optical information recording medium with a thick protection layer while using a light flux of a short wavelength for the optical information recording medium with a thin protection layer. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 解决的问题：为了提供能够适当地进行各光束的截面形状的成形以及强度分布的变换的光学拾取装置，即使使用多个发光点的光源单元 相邻提供。 光拾取单元10配置有光源单元20，在该光源单元20中相邻地设置发射不同波长的光的多个发光点，用于使光通量成形为具有发散角的光束整形元件40 不同于入射处的耦合元件12，以及用于将来自耦合元件的发射光束会聚在用于形成聚光点的光学信息记录介质的记录面上的物镜光学元件15。 不管光学信息记录介质的种类如何，从每个发光点到用于保护记录表面的保护层的表面的距离都是稳定的，并且通过使用长波长的光束来形成聚光点，用于光学信息 在具有较薄保护层的光学信息记录介质上使用短波长的光束的同时具有厚保护层的记录介质。 版权所有（C）2006，JPO＆NCIPI

    Optical pickup apparatus
    10.
    发明专利
    Optical pickup apparatus 审中-公开
    OPTICAL PICKUP APPARATUS

    公开(公告)号：JP2005302236A

    公开(公告)日：2005-10-27

    申请号：JP2004120669

    申请日：2004-04-15

    Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

    Inventor： SAKAMOTO KATSUYA

    IPC: G02B13/18 ,  G02B3/10 ,  G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup apparatus composed of a simple optical system in which a polarization beam splitter or the like is omitted. SOLUTION: To suppress the occurrence of spherical aberration when a converged spot is formed, it is enough to lower a collimate function by making the refractive index of a coupling lens 5 small such that the longer the length is in the wavelength of a laser beam, and the heavier the thickness is in a protecting substrate, the reduction of the reflective index becomes larger. Thereby, the radiated luminous flux of the laser beam is made incident on an objective lens 1, consequently spherical aberration acts in an under state. Consequently, the aberration is canceled. On the other hand, it is enough to make the refractive index of the coupling lens 5 large such that the shorter the length is in the laser beam, and the smaller the thickness is in the protecting substrate, the enlargement of the refractive index becomes large. That is, a material of which the refractive index is large is selected for a laser beam L1 having a short wavelength, and a material of which the refractive index is small is selected for a laser beam L2 having long a wavelength as the coupling lens 5. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 解决的问题：提供一种由省略了偏振分束器等的简单光学系统构成的光拾取装置。 解决方案：为了抑制会聚点形成时的球面像差的发生，通过使耦合透镜5的折射率小而使得校准函数降低，使得长度在波长λ 激光束的厚度越厚，保护基板越厚，反射指数的降低越大。 因此，激光束的辐射光束入射到物镜1上，因此球面像差作用在下状态。 因此，像差被消除。 另一方面，足以使耦合透镜5的折射率大，使得激光束的长度越短，并且保护基板的厚度越小，折射率的增大变大 。 也就是说，对于具有短波长的激光束L1选择折射率大的材料，并且对于具有长波长的激光束L2选择折射率小的材料作为耦合透镜5 （C）2006年，JPO＆NCIPI

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