Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith
    22.
    发明授权
    Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith 有权
    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

    公开(公告)号:US07382709B2

    公开(公告)日:2008-06-03

    申请号:US11679204

    申请日:2007-02-27

    IPC分类号: G11B7/00

    摘要: 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.

    摘要翻译: 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n 1,n 2和n 3各自是当各个光束来到时具有波长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 要分别入射到衍射结构中,满足下列公式:<?in-line-formula description =“In-line formula”end =“lead”?> | n 1 |> | n 2 |和| n 1 |> | n 3 |和<?in-line-formula description =“In-line Formulas”end =“tail”?>混合物镜会聚第1,第2和第3 分别将第一,第二和第三光束的次级衍射光线分别放置到第一,第二蚂蚁第三光学信息记录介质中的每一个的信息记录平面上,以便在各个规定的必要图像侧数值孔径内形成适当的波前。

    Optical pickup device and objective lens for the optical pickup device
    24.
    发明授权
    Optical pickup device and objective lens for the optical pickup device 失效
    用于光学拾取装置的光学拾取装置和物镜

    公开(公告)号:US07193954B2

    公开(公告)日:2007-03-20

    申请号:US10805730

    申请日:2004-03-22

    IPC分类号: G11B7/00

    摘要: An optical pickup apparatus includes first, second and third light sources; a light converging optical system including a first objective optical element and a second objective optical element, wherein the first objective optical element converges the light flux emitted from the first light source on a first information recording surface, the second objective optical element converges the light flux emitted from the third light source on a third information recording surface, and the first objective optical element or the second objective optical element converges the light flux emitted from the second light source on a second information recording surface; a lens holder holding the first objective optical element and the second objective element therein; and a chromatic aberration correcting element which corrects a chromatic aberration caused by a wavelength variation in a light flux emitted by the first light source.

    摘要翻译: 光拾取装置包括第一,第二和第三光源; 包括第一物镜光学元件和第二物镜光学元件的聚光光学系统,其中所述第一物镜光学元件将从所述第一光源发射的光束会聚在第一信息记录表面上,所述第二物镜光学元件会聚所述光通量 并且所述第一物镜光学元件或所述第二物镜光学元件将从所述第二光源射出的光束会聚在第二信息记录面上, 保持所述第一物镜光学元件和所述第二物镜元件的透镜保持器; 以及色差校正元件,其校正由第一光源发射的光束中的波长变化引起的色差。

    Optical pickup apparatus and optical element
    25.
    发明申请

    公开(公告)号:US20060256674A1

    公开(公告)日:2006-11-16

    申请号:US11491107

    申请日:2006-07-21

    IPC分类号: G11B7/00

    摘要: An optical pickup apparatus comprises first, second and third light sources to emit light fluxes of wavelength λ1, λ2 and λ3 for conducting recording and/or reproducing information for first, second and third optical information recording mediums having respective protective substrates of thickness t1, t2 and t3 and a diffractive optical element located on a common optical path for the first, second and third light sources. A converged-light spot is formed on the first optical information recording medium with m-th order diffracted-light ray of the wavelength λ1, on the second optical information recording medium with n-th order diffracted-light ray of the wavelength λ2, and on the third optical information recording medium with k-th order diffracted-light ray of the wavelength λ3 generated by the diffractive optical element respectively, wherein one of m, n and k is different from one of other two numbers.

    Optical pickup apparatus and optical element
    26.
    发明申请
    Optical pickup apparatus and optical element 有权
    光拾取装置和光学元件

    公开(公告)号:US20060256673A1

    公开(公告)日:2006-11-16

    申请号:US11490808

    申请日:2006-07-21

    IPC分类号: G11B7/00

    摘要: An optical pickup apparatus comprises first, second and third light sources to emit light fluxes of wavelength λ1, λ2 and λ3 for conducting recording and/or reproducing information for first, second and third optical information recording mediums having respective protective substrates of thickness t1, t2 and t3 and a diffractive optical element located on a common optical path for the first, second and third light sources. A converged-light spot is formed on the first optical information recording medium with m-th order diffracted-light ray of the wavelength λ1, on the second optical information recording medium with n-th order diffracted-light ray of the wavelength λ2, and on the third optical information recording medium with k-th order diffracted-light ray of the wavelength λ3 generated by the diffractive optical element respectively, wherein one of m, n and k is different from one of other two numbers.

    摘要翻译: 光拾取装置包括第一,第二和第三光源,以发射波长λ1,λ2和λ3的光束,用于对具有各自的厚度t的保护基板的第一,第二和第三光学信息记录介质进行记录和/或再现信息 1,t 2和t 3以及位于第一,第二和第三光源的公共光路上的衍射光学元件。 在波长为λ2的n阶衍射光线的第二光学信息记录介质上,在具有波长λ1的m级衍射光的第一光学信息记录介质上形成会聚光点 以及分别由衍射光学元件生成的波长λ3的k级衍射光的第三光学信息记录介质,其中m,n和k之一不同于其它两个数字之一。

    Optical pickup apparatus and objective optical element
    27.
    发明申请
    Optical pickup apparatus and objective optical element 失效
    光学拾取装置和物镜光学元件

    公开(公告)号:US20060077793A1

    公开(公告)日:2006-04-13

    申请号:US11222137

    申请日:2005-09-09

    IPC分类号: G11B7/00

    摘要: A light flux from the first light source forms a converged spot on first optical information recording medium by only a refraction action of the aspheric surface, or by a combination of the refraction action and an optical action given by at least one of the first phase structure and the second phase structure, a light flux from the second light source forms a converged spot on second optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure, and a light flux from the third light source forms a converged spot on third optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure.

    摘要翻译: 来自第一光源的光束仅通过非球面的折射作用或通过由第一相结构中的至少一个给出的折射作用和光学作用的组合在第一光学信息记录介质上形成会聚点 和第二相结构,来自第二光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第二光学记录介质上形成会聚点 第二相结构,并且来自第三光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第三光学记录介质上形成会聚点 相结构。

    Lens unit for optical pick-up apparatus, optical element for optical pick-up apparatus, lens frame for lens unit, assembly method of the lens unit, and optical pick-up apparatus
    28.
    发明申请
    Lens unit for optical pick-up apparatus, optical element for optical pick-up apparatus, lens frame for lens unit, assembly method of the lens unit, and optical pick-up apparatus 失效
    用于光学拾取装置的透镜单元,用于光学拾取装置的光学元件,用于透镜单元的透镜框,透镜单元的组装方法和光学拾取装置

    公开(公告)号:US20060062104A1

    公开(公告)日:2006-03-23

    申请号:US11211747

    申请日:2005-08-26

    IPC分类号: G11B7/00

    摘要: The lens unit for the optical pick-up apparatus has: the objective lens by which the projecting light from the light source is condensed on the information recording surface of the optical information recording medium; the phase control element which is arranged on the light source side to the objective lens, and which controls the phase of the projecting light from the light source; and the supporting member holding the objective lens and the phase control element; and the phase control element is held under the condition that its optical axis is inclined by a predetermined angle to the optical axis of the objective lens, and the intersection at which the optical axis of the phase control element crosses the optical surface having the phase structure is arranged on the optical path passing through the central point which passes the optical axis of the objective lens.

    摘要翻译: 用于光学拾取装置的透镜单元具有:将来自光源的投影光聚焦在光学信息记录介质的信息记录表面上的物镜; 所述相位控制元件布置在所述物镜的光源侧,并且控制来自所述光源的所述投射光的相位; 以及保持物镜和相位控制元件的支撑构件; 并且相位控制元件被保持在其光轴相对于物镜的光轴倾斜预定角度的条件下,并且相位控制元件的光轴与具有相位结构的光学表面相交的交点 被布置在通过穿过物镜的光轴的中心点的光路上。

    Metallic mold for optical element and optical element
    29.
    发明申请
    Metallic mold for optical element and optical element 失效
    金属模具用于光学元件和光学元件

    公开(公告)号:US20050226955A1

    公开(公告)日:2005-10-13

    申请号:US11098204

    申请日:2005-04-04

    IPC分类号: B29C33/38 B29D11/00 C03B11/00

    CPC分类号: B29D11/00413

    摘要: A molding die for forming an optical element, comprises a base body; a film layer formed on the base body and having a thickness of 0.01 to 500 μm; and a transferring surface formed on a surface of the film layer by a predetermined process and having a surface roughness Ra of 0.1 to 50 nm. The film layer is formed by an amorphous alloy having a supercooled liquid state containing 20 mol % or more of at least one atom of Pt, Ir, Au, Pd, Ru, Rh, Fe, Co, Ni, Zr, Al, Ti, Cu, W, Mo, Cr, B, and P and the transferring surface maintains the surface roughness after the transferring surface is heated to a temperature which is higher 50° C. higher than the glass transition temperature (Tg) of the optical element formed by the transferring surface and lower than the glass transition temperature of the amorphous alloy.

    摘要翻译: 一种用于形成光学元件的成形模具,包括基体; 薄膜层,形成在基体上,厚度为0.01〜500μm; 以及通过预定工艺在膜层的表面上形成的表面粗糙度Ra为0.1〜50nm的转印面。 该薄膜层由具有含有20mol%以上的Pt,Ir,Au,Pd,Ru,Rh,Fe,Co,Ni,Zr,Al,Ti等至少一个原子的过冷液态的非晶态合金形成, Cu,W,Mo,Cr,B和P,并且转印表面在转印表面被加热到比所形成的光学元件的玻璃化转变温度(Tg)高50℃以上的温度下保持表面粗糙度 通过转印表面并低于非晶合金的玻璃化转变温度。