OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME
    1.
    发明申请
    OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME 失效
    光信息记录/再现设备和目标光学系统

    公开(公告)号:US20130016598A1

    公开(公告)日:2013-01-17

    申请号:US13547342

    申请日:2012-07-12

    IPC分类号: G11B7/135 G02B5/18

    摘要: An objective optical system for an optical information recording/reproducing apparatus, at least one surface of the objective optical system being configured to be a phase shift surface having a phase shift structure, wherein: the phase shift surface has a first area contributing to converging first, second and third light beams onto recording surfaces of first, second and third optical discs, respectively; in the first area, the phase shift surface has at least two types of phase shift structures including a first phase shift structure having first steps and a second phase shift structure having second steps; the phase shift surface has a plurality of combinations of annular zones which satisfy a condition: 0.95

    摘要翻译: 一种用于光学信息记录/再现装置的物镜光学系统,所述物镜光学系统的至少一个表面被配置为具有相移结构的相移表面,其中:所述相移表面具有有助于首先收敛的第一区域 ,第二和第三光束分别连接到第一,第二和第三光盘的记录表面上; 在第一区域中,相移表面具有至少两种类型的相移结构,包括具有第一步骤的第一相移结构和具有第二步骤的第二相移结构; 相移表面具有满足以下条件的环状区域的多个组合:0.95

    OBJECTIVE LENS AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS
    3.
    发明申请
    OBJECTIVE LENS AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS 有权
    目标镜头和光学信息记录/再现设备

    公开(公告)号:US20100110861A1

    公开(公告)日:2010-05-06

    申请号:US12609273

    申请日:2009-10-30

    IPC分类号: G11B7/135

    摘要: A resin objective lens having a numerical aperture NA≧0.75. The objective lens satisfies a condition: 0≦|SC|MAX/f

    摘要翻译: 数值孔径NA≥0.75的树脂物镜。 物镜满足条件:0&nlE; | SC | MAX / f <0.002其中f表示波长λ处的焦距,| SC | MAX表示在大于或等于的范围内针对正弦条件的犯罪的最大绝对值 等于相对于光轴的有效光束半径的0%且小于90%。 物镜被配置为使得在有效光束半径的100%点处的正弦条件的攻击小于在90%点处限定的正弦条件。 物镜的至少一个光源侧表面形成为非球面,物镜满足条件:1.40 <(n-1)·(SAG1)'MAX·/ NA2 <1.95其中(SAG1)' MAX表示有效光束直径内的光源侧表面的最大梯度。

    OBJECTIVE LENS FOR OPTICAL PICK-UP
    4.
    发明申请
    OBJECTIVE LENS FOR OPTICAL PICK-UP 有权
    用于光学拾取的目标镜头

    公开(公告)号:US20080259775A1

    公开(公告)日:2008-10-23

    申请号:US12103910

    申请日:2008-04-16

    IPC分类号: G11B7/00

    CPC分类号: G11B7/1374 G11B7/22

    摘要: There is provided an objective lens for an optical pick-up. The objective lens includes a first surface on a light source side, and a second surface on an optical disc side. The first surface has a convex shape. Te objective lens is formed to be a single-element lens having a numerical aperture of 0.75 or more. In this configuration, the objective lens satisfies a condition: 0.95

    摘要翻译: 提供了用于光学拾取器的物镜。 物镜包括光源侧的第一表面和光盘侧的第二表面。 第一表面具有凸形。 Te物镜形成为具有0.75以上的数值孔径的单像素透镜。 在该结构中,物镜满足条件:<?in-line-formula description =“In-line Formulas”end =“lead”?> 0.95 <(n-1).tanθmax <1.50(1)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中θ 表示与第一个表面的法线的最大角度, 相对于第一表面的有效直径的光轴,n表示物镜的折射率。

    OBJECTIVE LENS AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS HAVING THE SAME
    5.
    发明申请
    OBJECTIVE LENS AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS HAVING THE SAME 有权
    目标镜头和光信息记录/复印装置

    公开(公告)号:US20100020672A1

    公开(公告)日:2010-01-28

    申请号:US12508101

    申请日:2009-07-23

    IPC分类号: G11B7/00

    CPC分类号: G11B7/1374

    摘要: An objective lens used for an optical information recording/reproducing apparatus for an optical disc based on a predetermined standard is made of resin and has a numerical aperture larger than or equal to 0.75. When f (unit: mm) represents a focal length at a wavelength λ (unit: nm), d (unit: mm) represents a thickness, and n represents a refractive index of the objective lens at the wavelength λ, the objective lens satisfies following conditions: 1.00

    摘要翻译: 用于基于预定标准的用于光盘的光学信息记录/再现装置的物镜由树脂制成,并且具有大于或等于0.75的数值孔径。 当f(单位:mm)表示波长λ(单位:nm)的焦距时,d(单位:mm)表示厚度,n表示物镜在波长λ处的折射率,物镜满足 以下条件:1.00×1.55dn / f物镜的至少光源侧表面为非球面。 物镜满足以下条件:2.80.n(3)其中(SAG1)'MAX表示有效束内的光源侧的非球面的下垂量SAG的梯度(SAG1)的最大坡度 直径。

    Objective Lens for Optical Pick-Up
    6.
    发明申请
    Objective Lens for Optical Pick-Up 有权
    光学拾取物镜

    公开(公告)号:US20080180815A1

    公开(公告)日:2008-07-31

    申请号:US12021516

    申请日:2008-01-29

    IPC分类号: G02B13/24

    CPC分类号: G11B7/13922 G11B7/1374

    摘要: There is provided an objective lens for an optical pick-up. The objective lens is formed to be a single-element plastic lens having a first surface and a second surface. The first surface is configured to have, within an effective diameter, an inflection point at which a second derivative of a sag of the first surface takes a value of 0. Further, the objective lens having a numerical aperture larger than or equal to 0.75.

    摘要翻译: 提供了用于光学拾取器的物镜。 物镜形成为具有第一表面和第二表面的单元塑料透镜。 第一表面被配置为在有效直径内具有第一表面的下垂的二次导数取值为0的拐点。此外,具有大于或等于0.75的数值孔径的物镜。

    DIFFRACTIVE LENS AND SCANNING LENS FORMED WITH DIFFRACTIVE LENS
    10.
    发明申请
    DIFFRACTIVE LENS AND SCANNING LENS FORMED WITH DIFFRACTIVE LENS 有权
    DIFFRACTIVE LENS AND SCANNING LENS FORMED DIFFRACTIVE LENS

    公开(公告)号:US20070002446A1

    公开(公告)日:2007-01-04

    申请号:US11427521

    申请日:2006-06-29

    IPC分类号: G02B5/18

    摘要: A scanning lens for an imaging optical system converges a beam emitted by a light source and deflected by a deflector on a target surface to form a beam spot scanning in a main scanning direction thereon. The scanning lens includes a plastic lens formed by injection molding, which has a diffractive lens structure on at least one surface thereof. The diffractive Wens structure has a plurality of annular zones arranged concentrically about a rotational axis. Each annular zone has a diffracting surface that diffracts the light beam passing therethrough. The diffractive lens structure has stepped surfaces each connecting adjoining diffracting surfaces In a plane including the rotational axis and parallel with the main scanning direction, the stepped surfaces are inclined with respect to the rotational axis so that stress working between a metallic molding for the plastic lens and each of the stepped surfaces in demolding is reduced.

    摘要翻译: 用于成像光学系统的扫描透镜会聚由光源发射并由偏转器偏转在目标表面上的光束,以在其上沿主扫描方向形成光束点扫描。 扫描透镜包括通过注射成型形成的塑料透镜,其在至少一个表面上具有衍射透镜结构。 衍射Wens结构具有围绕旋转轴线同心布置的多个环形区域。 每个环形区域具有衍射通过其的光束的衍射表面。 衍射透镜结构具有各自连接相邻的衍射面的阶梯面,在包含旋转轴线且与主扫描方向平行的平面中,阶梯面相对于旋转轴线倾斜,使得塑料透镜用金属成形体 并且脱模中的每个台阶表面减小。