Coupling lens and optical information recording/reproducing device having the same
    91.
    发明授权
    Coupling lens and optical information recording/reproducing device having the same 有权
    耦合透镜和具有其的光信息记录/再现装置

    公开(公告)号:US08004955B2

    公开(公告)日:2011-08-23

    申请号:US12251795

    申请日:2008-10-15

    IPC分类号: G11B7/00

    摘要: There is provided a coupling lens used in an optical information recording/reproducing device for recording information to and/or reproducing information from an optical disc. The coupling lens includes a first surface and a second surface, wherein the coupling lens is configured to satisfy a following condition (1): −0.80≦Z≦0.40  (1), wherein a value Z is obtained from a following equation (E1): Z = ⅆ ⅆ n ⁢ ( L ′ ) L ′ = ( A - B ) ( D - E ) - ( F - G ) ( H - I ) . ( E1 )

    摘要翻译: 提供了一种用于光信息记录/再现装置中用于向光盘记录信息和/或从光盘再现信息的耦合透镜。 耦合透镜包括第一表面和第二表面,其中耦合透镜被配置为满足以下条件(1):-0.80< lE; Z≦̸ 0.40(1)其中,从以下等式(E1 ):Z =ⅆⅆn(L')L'=(A-B)(D-E) - (F-G)(H-I)。 (E1)

    Objective lens and optical information recording/reproducing apparatus having the same
    92.
    发明授权
    Objective lens and optical information recording/reproducing apparatus having the same 有权
    物镜和具有该物镜的光信息记录/重放装置

    公开(公告)号:US07929401B2

    公开(公告)日:2011-04-19

    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的折射率,物镜满足 以下条件:1.00

    Diffractive lens and scanning lens formed with diffractive lens
    93.
    发明授权
    Diffractive lens and scanning lens formed with diffractive lens 有权
    衍射透镜和用衍射透镜形成的扫描透镜

    公开(公告)号:US07889426B2

    公开(公告)日:2011-02-15

    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 lens 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,其在其至少一个表面上具有衍射透镜结构。 衍射透镜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衍射面的阶梯面。 在包括旋转轴线并与主扫描方向平行的平面中,阶梯面相对于旋转轴线倾斜,使得用于塑料透镜的金属模制件与脱模中的每个台阶表面之间的应力作用减小。

    Scanning optical system
    97.
    发明授权
    Scanning optical system 失效
    扫描光学系统

    公开(公告)号:US06980344B2

    公开(公告)日:2005-12-27

    申请号:US10600697

    申请日:2003-06-23

    申请人: Shuichi Takeuchi

    发明人: Shuichi Takeuchi

    CPC分类号: G02B26/127

    摘要: A scanning optical system includes a deflector that deflects a light beam toward an object surface such that the light beam is scanned over the object surface in a main scanning direction. A mirror system reflects back the light beam so that the light beam travels toward the object surface after being deflected twice by the deflector. The mirror system reflects back the light beam such that a projection of the light beam on an auxiliary scanning section, which is a plane perpendicular to the main scanning direction, is incident on the reflection surface for a first time at an incident angle different from an incident angle at which the projection of the light beam is incident on the reflection surface for a second time. A blocking member is provided to prevent the unwanted light flux from striking the object surface while allowing the light beam scanning the object surface.

    摘要翻译: 扫描光学系统包括偏转器,偏转器将光束朝向物体表面偏转,使得光束在主扫描方向上在物体表面上扫描。 反射镜系统反射光束,使得光束在被偏转器偏转两次之后朝向物体表面传播。 反射镜系统反射光束,使得光束在与主扫描方向垂直的平面上的辅助扫描部分的投影以不同于入射角的入射角第一次入射在反射面上 光束投影第二次入射到反射面上的入射角度。 提供阻挡构件以防止不想要的光束撞击物体表面,同时允许光束扫描物体表面。

    Projection aligner and optical system therefor
    99.
    发明授权
    Projection aligner and optical system therefor 有权
    投影对准器及其光学系统

    公开(公告)号:US06898025B2

    公开(公告)日:2005-05-24

    申请号:US10452236

    申请日:2003-06-03

    IPC分类号: G02B13/14 G03F7/20 G02B17/00

    摘要: A projection optical system, which is telecentric with respect to an object side and an image side, projects a pattern onto an image plane, which is substantially parallel with the pattern, at a substantial equi-magnification. The projecting optical system is provided with first and second condenser lenses having a common (first) optical axis which is perpendicular to the pattern and the image plane. The projection optical system further includes an imaging lens having a second optical axis that intersects with the first optical axis at an intermediate position between the first and second condenser lenses. A first mirror reflects a beam from the pattern and passed through the first condenser lens toward the imaging lens. A second mirror reflects the beam passed through the imaging lens to the imaging lens, and a third mirror reflects the beam passed through the imaging lens toward the second condenser lens.

    摘要翻译: 相对于物体侧和图像侧是远心的投影光学系统以基本上等倍的方式将图案投影到基本上与图案平行的图像平面上。 投影光学系统设置有具有垂直于图案和图像平面的公共(第一)光轴的第一和第二聚光透镜。 投影光学系统还包括具有在第一和第二聚光透镜之间的中间位置处与第一光轴相交的第二光轴的成像透镜。 第一反射镜反射来自图案的光束并且经过第一聚光透镜朝向成像透镜。 第二反射镜将通过成像透镜的光束反射到成像透镜,并且第三反射镜将通过成像透镜的光束反射到第二聚光透镜。

    Objective lens for optical discs
    100.
    发明授权
    Objective lens for optical discs 失效
    光学镜片

    公开(公告)号:US06873475B2

    公开(公告)日:2005-03-29

    申请号:US10790737

    申请日:2004-03-03

    申请人: Shuichi Takeuchi

    发明人: Shuichi Takeuchi

    摘要: An objective lens for a plurality of types of optical discs is provided with a diffracting structure on at least one surface thereof. The surface includes an inner area including the optical axis and an outer area. The outer area includes at least one special annular zone. Part of a first beam (having a first wavelength for a first optical disc of lower data density) passed through the zone will be substantially in antiphase with part of the first beam passed through the inner area. The convergence angle θ of part of the first beam incident on the outermost part of the inner area measured after emerging from the objective lens and a design numerical aperture NAref of the first optical disc satisfy: 1.0

    摘要翻译: 用于多种类型的光盘的物镜在其至少一个表面上设置有衍射结构。 表面包括包括光轴和外部区域的内部区域。 外部区域包括至少一个特殊的环形区域。 穿过该区域的第一光束(具有较低数据密度的第一光盘的第一波长)的部分将基本上与第一光束的一部分通过内部区域反相。 入射到从物镜出射后测量的内部区域的最外部分的第一光束的部分的会聚角θ和第一光盘的设计数值孔径NAref满足:第一光束的物镜的有效NA 基本上等于设计数值孔径NAref。