IMAGING LENS AND IMAGING APPARATUS
    1.
    发明申请
    IMAGING LENS AND IMAGING APPARATUS 有权
    成像镜头和成像设备

    公开(公告)号:US20150234181A1

    公开(公告)日:2015-08-20

    申请号:US14694192

    申请日:2015-04-23

    CPC classification number: G02B27/0025 G02B9/64 G02B13/04 G02B13/06 G02B13/18

    Abstract: An imaging lens, consisting of a first lens group, a top, and a second lens group having a positive refractive power, in order from the object side, in which the first lens group is composed of a first front lens group having a negative refractive power and a first rear lens group having a positive refractive power in order from the object side, the first rear lens group is composed of a cemented lens formed of a negative lens and a positive lens, the first front lens group at least includes four negative lenses, and at least two of the negative lenses included in the first front lens group satisfy a conditional expression given below: 70

    Abstract translation: 一种成像透镜,由具有正折光力的第一透镜组,顶部和第二透镜组构成,从物体侧开始,其中第一透镜组由具有负折射率的第一前透镜组构成 所述第一后透镜组由物镜侧依次具有正折光力,所述第一后透镜组由由负透镜和正透镜形成的胶合透镜构成,所述第一前透镜组至少包括四个负透镜 透镜,并且包括在第一前透镜组中的至少两个负透镜满足以下条件表达式:70 <&lt; d1n(1)。

    IMAGING LENS AND IMAGING APPARATUS
    3.
    发明申请
    IMAGING LENS AND IMAGING APPARATUS 有权
    成像镜头和成像设备

    公开(公告)号:US20150116848A1

    公开(公告)日:2015-04-30

    申请号:US14586179

    申请日:2014-12-30

    CPC classification number: G02B13/04 G02B9/64 G02B15/14

    Abstract: An imaging lens consists of a first lens group, a second lens group, an aperture stop and a third lens group that has positive refractive power in this order from an object side. The first lens group consists of an L11 lens having positive refractive power, an L12 lens having negative refractive power, an L13 meniscus lens having negative refractive power with its concave surface facing an image side, an L14 lens having negative refractive power with its concave surface facing the object side and two or three lenses, each having positive refractive power, in this order from the object side. The second lens group consists of an L2p lens having positive refractive power and an L2n lens having negative refractive power.

    Abstract translation: 成像透镜由物体侧依次具有正折射力的第一透镜组,第二透镜组,孔径光阑和第三透镜组构成。 第一透镜组由具有正折光力的L11透镜,具有负折光力的L12透镜,具有负折射力的L13弯月透镜,其凹面朝向像侧,具有负折射光焦度的L14透镜及其凹面 面对物体侧,两个或三个透镜,每个具有正折射光焦度,从物体侧开始。 第二透镜组由具有正折光力的L2p透镜和具有负屈光力的L2n透镜组成。

    WIDE-ANGLE PROJECTION LENS AND PROJECTION DISPLAY DEVICE USING THE SAME
    5.
    发明申请
    WIDE-ANGLE PROJECTION LENS AND PROJECTION DISPLAY DEVICE USING THE SAME 有权
    宽角投影镜头和投影显示设备使用它

    公开(公告)号:US20140049835A1

    公开(公告)日:2014-02-20

    申请号:US14064961

    申请日:2013-10-28

    Inventor: Hiroshi YAMADA

    CPC classification number: G02B13/04 G02B13/16 G02B13/18 G02B13/22

    Abstract: A first lens group including two aspherical lenses, a second lens group consisting of three negative meniscus lenses, each negative meniscus lens having a convex surface facing the enlargement side, a third lens group having a negative refractive power and including at least one cemented lens, and a fourth lens group having a positive refractive power and including at least two cemented lenses and one aspherical lens are arranged in this order from the enlargement side. Predetermined conditional expressions are satisfied.

    Abstract translation: 包括两个非球面透镜的第一透镜组,由三个负弯月透镜组成的第二透镜组,每个负弯月透镜具有面向放大侧的凸面,具有负屈光力并且包括至少一个胶合透镜的第三透镜组, 并且具有正屈光力并且包括至少两个胶合透镜和一个非球面透镜的第四透镜组从放大侧依次布置。 满足预定条件表达式。

    WIDE ANGLE LENS AND IMAGING APPARATUS
    6.
    发明申请
    WIDE ANGLE LENS AND IMAGING APPARATUS 有权
    宽角镜头和成像装置

    公开(公告)号:US20140340563A1

    公开(公告)日:2014-11-20

    申请号:US14451467

    申请日:2014-08-05

    CPC classification number: G02B9/64 G02B9/14 G02B13/06 H04N5/2254

    Abstract: A wide angle lens includes: a positive first lens group, a second lens group, constituted by two or fewer lenses, that moves during focusing operations, and a third lens group that includes at least one positive lens, provided in this order from the object side. The first lens group includes at least a positive meniscus lens with a convex surface toward the object side, a negative meniscus lens with a convex surface toward the object side, a lens having a concave surface with a radius of curvature having a smaller absolute value toward the image side, a negative lens, a cemented lens formed by a positive lens and a negative lens, and an aperture stop provided adjacent to the cemented lens toward the image side thereof, provided in this order from the object side. The wide angle lens satisfies a predetermined conditional formula.

    Abstract translation: 广角镜头包括:在聚焦操作期间移动的由两个或更少透镜构成的正的第一透镜组,第二透镜组,以及包括至少一个正透镜的第三透镜组,其从该物体依次设置 侧。 第一透镜组至少包括具有朝向物体侧的凸表面的正弯月透镜,具有朝向物体侧的凸表面的负弯月形透镜,具有凹面的具有较小绝对值的凹面的透镜朝向 图像侧,负透镜,由正透镜和负透镜形成的胶合透镜,以及邻接胶合透镜朝向其像侧设置的孔径光阑,从物体侧依次设置。 广角镜头满足预定的条件公式。

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