Optical pickup device
    11.
    发明申请
    Optical pickup device 审中-公开
    光学拾取装置

    公开(公告)号:US20050007931A1

    公开(公告)日:2005-01-13

    申请号:US10882617

    申请日:2004-07-01

    IPC分类号: G11B7/00 G11B7/125 G11B7/135

    摘要: An optical pickup apparatus having a light source unit including a plurality of light emitting, a beam regulating element to regulate a light flux emitted from the light source unit so that the an angle of divergence of the light flux emitted from the light source unit is changed to a first direction and/or a second direction, wherein a distance from each of the light emitting element to a surface of a protective layer that protects the recording surface is constant regardless a type of the optical information recording medium.

    摘要翻译: 一种具有包括多个发光的光源单元的光学拾取装置,用于调节从光源单元发射的光束的光束调节元件,使得从光源单元发射的光束的发散角度改变 到第一方向和/或第二方向,其中从每个发光元件到保护记录表面的保护层的表面的距离是恒定的,而与所述光学信息记录介质的类型无关。

    Objective lens for optical pick-up apparatus and optical pick-up apparatus
    12.
    发明授权
    Objective lens for optical pick-up apparatus and optical pick-up apparatus 失效
    用于光学拾取装置和光学拾取装置的物镜

    公开(公告)号:US06747812B2

    公开(公告)日:2004-06-08

    申请号:US10298008

    申请日:2002-11-18

    IPC分类号: G02B1318

    摘要: An objective lens for use in an optical pickup apparatus in which first and second light sources are provided on a same flat surface, converges each of the light fluxes from the first and second light sources onto an information recording plane through each of transparent substrates of a first and second optical information recording mediums and has a coma aberration of 0.015 &lgr;1 rms or less when recording or reproducing information is conducted for the first optical information recording medium, and a coma aberration of 0.015 &lgr;2 rms or less when recording or reproducing information is conducted for the second optical information recording medium.

    摘要翻译: 一种用于光学拾取装置的物镜,其中第一和第二光源设置在相同的平面上,将来自第一和第二光源的每个光束通过每个透明基板收敛到信息记录平面上 第一和第二光学信息记录介质,并且当对第一光学信息记录介质进行记录或再现信息时具有0.015λ1rms或更小的彗形像差,并且当进行记录或再现信息时,彗差为0.015λ2rms或更小 用于第二光学信息记录介质。

    Optical pickup apparatus and objective optical unit
    13.
    发明申请
    Optical pickup apparatus and objective optical unit 审中-公开
    光学拾取装置和物镜光学单元

    公开(公告)号:US20060203692A1

    公开(公告)日:2006-09-14

    申请号:US11366546

    申请日:2006-03-03

    IPC分类号: G11B7/00

    摘要: An optical pickup apparatus includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical unit having a first optical path difference providing structure and a second optical path difference providing structure. Magnifications of the objective optical unit for the first-third light fluxes have almost same value. The first optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be one of under-correction and over-correction for all of the first light flux, the second light flux, and the third light flux. The second optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be the other of under-correction and over-correction of the spherical aberration only for the second light flux.

    摘要翻译: 一种光学拾取装置包括:用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 以及具有第一光程差提供结构和第二光程差提供结构的物镜光学单元。 用于第一至第三光束的物镜光学单元的放大率具有几乎相同的值。 第一光程差提供结构提供预定的光程差,并且将球面像差改变为对于所有第一光通量,第二光通量和第三光通量的校正和过校正之一。 第二光程差提供结构提供预定的光程差,并且将球面像差改变为仅用于第二光通量的球面像差的校正不足和过校正。

    OPTICAL PICK-UP APPARATUS
    14.
    发明申请
    OPTICAL PICK-UP APPARATUS 失效
    光学拾取装置

    公开(公告)号:US20080013433A1

    公开(公告)日:2008-01-17

    申请号:US11775007

    申请日:2007-07-09

    IPC分类号: G02B13/18

    摘要: An optical pickup apparatus for conducting recording and/or reproducing information for a first optical information recording medium including at least a transparent protective substrate, a first information recording surface, and a second information recording surface which are laminated in this order from a light source side along an optical axis, comprising: a first light source to emit a light flux having a wavelength of λ1 (380 nm≦λ1≦450 nm); an objective lens to converge the light flux onto the first optical information recording medium; a spherical aberration correcting structure to correct a spherical aberration caused in a converged spot on the first and second information recording surfaces due to a difference in thickness between the thickness to the first information recording surface and the thickness to the second information recording surface.

    摘要翻译: 一种用于对包括至少透明保护基板,第一信息记录表面和第二信息记录表面的第一光学信息记录介质进行记录和/或再现信息的光学拾取装置,其从光源侧依次层叠 沿着光轴,包括:发射波长为λ1(380nm <λ1= 450nm)的光束的第一光源; 用于将光束会聚到第一光学信息记录介质上的物镜; 球面像差校正结构,用于校正由于第一信息记录表面的厚度与第二信息记录表面的厚度之间的厚度差,在第一和第二信息记录表面上的会聚点引起的球面像差。

    Optical pick-up apparatus
    15.
    发明授权
    Optical pick-up apparatus 失效
    光学拾取装置

    公开(公告)号:US07903528B2

    公开(公告)日:2011-03-08

    申请号:US11775007

    申请日:2007-07-09

    IPC分类号: G11B7/00

    摘要: An optical pickup apparatus for conducting recording and/or reproducing information for a first optical information recording medium including at least a transparent protective substrate, a first information recording surface, and a second information recording surface which are laminated in this order from a light source side along an optical axis, comprising: a first light source to emit a light flux having a wavelength of λ1 (380 nm≦λ1≦450 nm); an objective lens to converge the light flux onto the first optical information recording medium; a spherical aberration correcting structure to correct a spherical aberration caused in a converged spot on the first and second information recording surfaces due to a difference in thickness between the thickness to the first information recording surface and the thickness to the second information recording surface.

    摘要翻译: 一种用于对包括至少透明保护基板,第一信息记录表面和第二信息记录表面的第一光学信息记录介质进行记录和/或再现信息的光学拾取装置,其从光源侧依次层叠 沿着光轴,包括:第一光源,用于发射波长为λ1(380nm&nlE;λ1&nlE; 450nm)的光束; 用于将光束会聚到第一光学信息记录介质上的物镜; 球面像差校正结构,用于校正由于第一信息记录表面的厚度与第二信息记录表面的厚度之间的厚度差,在第一和第二信息记录表面上的会聚点引起的球面像差。

    Objective lens, optical pickup device and method for producing optical element for optical pickup device
    16.
    发明授权
    Objective lens, optical pickup device and method for producing optical element for optical pickup device 失效
    物镜,光学拾取装置和用于制造光学拾取装置的光学元件的方法

    公开(公告)号:US07126902B2

    公开(公告)日:2006-10-24

    申请号:US10223631

    申请日:2002-08-20

    IPC分类号: G11B7/00

    摘要: An objective lens for use in an optical pickup apparatus has a diffractive optical surface. A first light flux having a first wavelength of λ1 is converged as a first number diffraction order diffracted-ray other than the zero-th order diffracted-ray onto an information recording plane of the first optical information recording medium having a thinner protective substrate t1 by the diffractive optical surface and a second light flux having a second wavelength of λ2 (λ1

    摘要翻译: 用于光学拾取装置的物镜具有衍射光学表面。 具有λ1的第一波长的第一光束作为除零级衍射光之外的第一数量级衍射级衍射光束会聚在具有较薄保护衬底t的第一光学信息记录介质的信息记录平面上 通过衍射光学表面和具有λ2(λ1λ2)的第二波长的第二光束作为除零级衍射光之外的第二数量衍射级衍射光会聚在信息记录面上 通过衍射光学表面具有较厚保护衬底t 2(t 1

    Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method
    20.
    发明授权
    Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method 有权
    光拾取装置,设置有光学拾取装置的记录/再现装置,光学元件和信息记录/再现方法

    公开(公告)号:US07889617B2

    公开(公告)日:2011-02-15

    申请号:US11976063

    申请日:2007-10-19

    IPC分类号: G11B7/00

    摘要: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source for emitting first light flux having a first wavelength; a second light source for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system having an optical axis and a diffractive portion, and a photo detector; wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

    摘要翻译: 一种用于从光学信息记录介质再现信息或将信息记录在光学信息记录介质上的光学拾取装置设置有用于发射具有第一波长的第一光通量的第一光源; 第二光源,用于发射具有第二波长的第二光束,所述第一波长不同于所述第二波长; 具有光轴和衍射部分的会聚光学系统和光电检测器; 其中在第一光束通过衍射部分以产生至少一个衍射光线的情况下,第一光通量的n阶衍射光线的量大于第一光通量的任何其它有序衍射光线的量 并且在第二光束通过衍射部分以产生至少一个衍射光线的情况下,第二光束的n阶衍射光线的量大于第二光的任何其它有序衍射光线的量 通量,其中n表示除零以外的整数。