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    • 1. 发明授权
    • Zoom lens, lens barrel and image pickup apparatus
    • 变焦镜头,镜筒和摄像装置
    • US07982973B2
    • 2011-07-19
    • US12457357
    • 2009-06-09
    • Yusuke NanjoTakashi Koyama
    • Yusuke NanjoTakashi Koyama
    • G02B9/00
    • G02B15/173G02B5/005
    • Disclosed herein is a zoom lens, wherein a stop moves in an optical axis direction n in a phase of zooming; a position of the stop in a telephoto end is located on an object side with respect to a position of the stop in a wide-angle end; an opening size of the stop is controlled in conjunction with the zooming so that an open F number becomes approximately constant in a range from the wide-angle end to a specific intermediate focal length; the opening size of the stop is made approximately constant in a range from the specific intermediate focal length to the telephoto end so that the open F number is changed; and the specific intermediate focal length fulfills the following conditional expression (1), wide-angle end focal length×1.5
    • 这里公开了一种变焦透镜,其中,停止在变焦的相位沿光轴方向n移动; 在远摄端的停止位置相对于广角端的止挡位置位于物体侧; 结合缩放来控制停止的开口尺寸,使得在从广角端到特定中间焦距的范围内,打开的F数变得近似恒定; 在从特定的中间焦距到望远端的范围内,停止的开口尺寸近似恒定,使得打开的F数变化; 并且具体的中间焦距满足以下条件表达式(1),广角端焦距×1.5 <特定中间焦距<长焦端焦距/ 1.4。 。 。 (1)。
    • 3. 发明申请
    • Zoom lens, lens barrel and image pickup apparatus
    • 变焦镜头,镜筒和摄像装置
    • US20100020410A1
    • 2010-01-28
    • US12457357
    • 2009-06-09
    • Yusuke NanjoTakashi Koyama
    • Yusuke NanjoTakashi Koyama
    • G02B15/14
    • G02B15/173G02B5/005
    • Disclosed herein is a zoom lens, wherein a stop moves in an optical axis direction n in a phase of zooming; a position of the stop in a telephoto end is located on an object side with respect to a position of the stop in a wide-angle end; an opening size of the stop is controlled in conjunction with the zooming so that an open F number becomes approximately constant in a range from the wide-angle end to a specific intermediate focal length; the opening size of the stop is made approximately constant in a range from the specific intermediate focal length to the telephoto end so that the open F number is changed; and the specific intermediate focal length fulfills the following conditional expression (1), wide-angle end focal length×1.5
    • 这里公开了一种变焦透镜,其中,停止在变焦的相位沿光轴方向n移动; 在远摄端的停止位置相对于广角端的止挡位置位于物体侧; 结合缩放来控制停止的开口尺寸,使得在从广角端到特定中间焦距的范围内,打开的F数变得近似恒定; 在从特定的中间焦距到望远端的范围内,停止的开口尺寸近似恒定,使得打开的F数变化; 并且具体的中间焦距满足以下条件表达式(1),广角端焦距×1.5 <特定中间焦距<长焦端焦距/ 1.4。 。 。 (1)
    • 4. 发明授权
    • Imaging device and zoom lens
    • 成像装置和变焦镜头
    • US07583300B2
    • 2009-09-01
    • US10477231
    • 2003-03-14
    • Yusuke NanjoHitoshi Nakanishi
    • Yusuke NanjoHitoshi Nakanishi
    • H04N5/262G02B15/14
    • G02B15/173G02B7/102G02B7/14G02B15/10
    • An image pickup apparatus having a plurality of image pickup modes and a zoom lens for use with the image pickup apparatus is configured such that, even if the dimension of an effective screen region of an image pickup element changes as a result of changeover of the image pickup mode, the change of the angle of view is moderated and good aberration correction can be achieved in any of the image pickup modes.In an image pickup apparatus (1), an additional lens set (G5) having a positive refractive power is positioned most adjacent the image side with respect to a zoom lens (2) for movement to and from a position on an optical axis of the zoom lens. Upon changeover of an image pickup mode, the additional lens set is moved to or away from the position on the optical axis to reduce or extend the focal length range of the zoom lens thereby to moderate the variation of the angle of view caused by a difference in dimension of the effective screen region of an image pickup element (12) when any different image pickup mode is selected. Further, the movement of the additional lens set to or from the position on the optical axis is detected to set the states of components in accordance with any image pickup mode.
    • 具有多个图像拾取模式的图像拾取装置和与图像拾取装置一起使用的变焦透镜被配置为使得即使图像转换的结果,图像拾取元件的有效屏幕区域的尺寸变化 拾取模式,可以缓和视角的变化,并且可以在任何图像拾取模式中实现良好的像差校正。 在图像拾取装置(1)中,具有正折光力的附加透镜组(G5)相对于变焦透镜(2)位于与像侧的位置最靠近的位置, 变焦镜头。 在切换图像拾取模式时,附加透镜组移动到或远离光轴上的位置以减小或延长变焦透镜的焦距范围,从而调节由差异引起的视角的变化 当选择任何不同的图像拾取模式时,图像拾取元件(12)的有效屏幕区域的尺寸。 此外,检测附加透镜的设置在光轴上的位置或从光轴上的位置的移动,以根据任何图像拾取模式设置分量的状态。
    • 6. 发明申请
    • Tilt lens system and image pickup apparatus
    • 倾斜透镜系统和摄像装置
    • US20080309815A1
    • 2008-12-18
    • US12149869
    • 2008-05-09
    • Yusuke NanjoMasafumi Sueyoshi
    • Yusuke NanjoMasafumi Sueyoshi
    • H04N5/232
    • G02B13/00G03B5/06H04N5/2259
    • A tilt lens system includes a focus lens unit movable during focusing; a diaphragm sharing a primary optical axis with the focus lens unit; and a tilt lens unit, arranged on an image side of the focus lens unit and the diaphragm, having a negative refractive power and an optical axis tiltable with respect to the primary optical axis. Conditional Expressions (1) and (2) are satisfied as follows, 1.3
    • 倾斜透镜系统包括可在聚焦期间移动的聚焦透镜单元; 与聚焦透镜单元共享主光轴的光阑; 以及倾斜透镜单元,布置在聚焦透镜单元和隔膜的图像侧上,具有负折射力和相对于主光轴可倾斜的光轴。 条件表达式(1)和(2)满足如下:<?in-line-formula description =“In-line Formulas”end =“lead”?> 1.3 <?in-line-formula description =“In-line Formulas”end =“lead”?> 0

      其中,betat是倾斜透镜单元处于非倾斜状态的横向放大率,P是距离倾斜透镜单元的最物体侧表面的距离 到倾斜透镜单元的旋转中心,并且H1是从倾斜透镜单元的最物体侧表面到倾斜透镜单元的第一主点的距离。

    • 8. 发明授权
    • Zoom lens and image pickup apparatus
    • 变焦镜头和摄像设备
    • US07362510B2
    • 2008-04-22
    • US10554508
    • 2005-02-25
    • Yusuke NanjoAtsuo Minato
    • Yusuke NanjoAtsuo Minato
    • G02B3/00G02B15/14G03B17/00
    • G02B15/173
    • A zoom lens with a reduced overall length having a color separating prism therein and a telecentric property with a first lens group (GI) having a positive refractive power and having a fixed position, a second lens group (GII) of the variable magnification type having a negative refractive power and having a position movable for magnification variation, a third lens group (GIII) having a positive refractive power and having a fixed position and a fourth lens group (GIV) having a positive refractive power and having a position variable for adjustment of a focal position upon magnification variation and upon focusing are disposed in order from an object side. At least one face of the two convex lenses in the fourth lens group is formed from an aspheric face.
    • 具有减小的总长度的变焦透镜,其中具有分色棱镜,并且具有与具有正折射力并具有固定位置的第一透镜组(GI)的远心特性,所述可变放大倍数类型的第二透镜组(GII)具有 具有负屈光力并且具有可移动以用于放大变化的位置,具有正屈光力并具有固定位置的第三透镜组(GIII)和具有正折光力并具有用于调节的位置可变位置的第四透镜组(GIV) 在放大变化时和聚焦时的焦点位置从物体侧依次布置。 第四透镜组中的两个凸透镜的至少一个面由非球面形成。
    • 10. 发明申请
    • Zoom lens and image pickup apparatus
    • 变焦镜头和摄像设备
    • US20060055815A1
    • 2006-03-16
    • US10542087
    • 2003-12-12
    • Yusuke NanjoShinichi Arita
    • Yusuke NanjoShinichi Arita
    • H04N5/225
    • H04N5/23296G02B15/173
    • A zoom lens made up of a first lens group having positive refracting power, a second lens group having negative refracting power, a third lens group having positive refracting power, and a fourth lens group having positive refracting power, which are disposed in order from an object side, in which the first lens group and the third lens groups are stationary, and the zoom lens performs mainly variable power by shifting the second lens group in an optical axis direction, and performs correction for image position fluctuations and focusing by shifting the fourth lens group in the optical axis direction, is characterized in that the first lens group is composed of five lenses: a concave lens; a convex lens with a strong convexity facing to an image side; a cemented lens made up of a concave lens with a strong concavity facing to the image side, and a convex lens; and a convex lens with a strong convexity facing to the object side, which are disposed in order from the object side, and by satisfying each of the following conditional expressions: 1.25
    • 由具有正折射率的第一透镜组,具有负折射力的第二透镜组,具有正折射率的第三透镜组和具有正折射率的第四透镜组构成的变焦透镜,其从 物镜侧,其中第一透镜组和第三透镜组是静止的,并且变焦透镜主要通过在光轴方向上移动第二透镜组来执行可变功率,并且通过将第四透镜组和第四透镜组的第四透镜组 透镜组在光轴方向上的特征在于,第一透镜组由五个透镜组成:凹透镜; 具有朝向图像侧的强凸度的凸透镜; 由具有朝向像侧的强凹面的凹透镜构成的胶合透镜和凸透镜; 以及从物体侧依次设置具有朝向物体侧的强凸度的凸透镜,并且通过满足以下每个条件表达式