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    • 2. 发明授权
    • Zoom lens
    • 变焦镜头
    • US08711489B2
    • 2014-04-29
    • US13369777
    • 2012-02-09
    • Hirohiko KimataYasuharu YamadaYasuji OgataKazuteru Kawamura
    • Hirohiko KimataYasuharu YamadaYasuji OgataKazuteru Kawamura
    • G02B15/14G02B15/173
    • G02B15/22G02B15/14G02B15/173G02B15/177
    • In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.
    • 在固定的总长度的变焦透镜中,在从广角端向望远端改变放大倍数时,第一透镜组在第二透镜组移动的同时被固定,第三和第四透镜组是 相对于广角端部位于长焦端的物体侧,使得第二透镜组和第三透镜组之间的间隔在望远端相对于广角端减小; 第三透镜组和第四透镜组之间的间隔在望远端相对于广角端增加; 并且第四透镜组和第五透镜组之间的间隔在望远端相对于广角端增加,并且在从远程对象点聚焦近物点时,第二透镜组移动。
    • 3. 发明授权
    • Two-unit zoom lens system
    • 双机变焦镜头系统
    • US5459616A
    • 1995-10-17
    • US19286
    • 1993-02-18
    • Kazuteru KawamuraYasuji Ogata
    • Kazuteru KawamuraYasuji Ogata
    • G02B15/16G02B15/14
    • G02B15/161
    • The invention provides a two-unit or positive-negative type of zoom lens that has a zoom range of the order of 38-70 mm, comprises six lens groups or six lenses, and makes use of an aspherical plastic lens for cost reduction and for improving its performance as well. This zoom lens system is constructed from a first unit I of positive power and a second unit II of negative power and is designed to be variable in the air space between both the units for zooming. The first unit I includes a positive meniscus lens L1 convex on the object side, a negative lens L2, a positive lens L3 and a lens L4, and the second unit II includes a positive meniscus lens L5 convex on the image side and a negative meniscus lens L6 convex on the image side. At least L5 consists of a plastic lens having an aspherical surface.
    • 本发明提供了具有38-70mm量级的变焦范围的两单元或正负型变焦透镜,包括六个透镜组或六个透镜,并且使用非球面塑料透镜来降低成本,并且 提高其性能。 该变焦透镜系统由正功率的第一单元I和负功率的第二单元II构成,并且被设计为在用于变焦的两个单元之间的空气空间中可变。 第一单元I包括在物体侧凸出的正弯月透镜L1,负透镜L2,正透镜L3和透镜L4,第二单元II包括在像侧凸起的正弯月透镜L5和负弯液面 透镜L6在图像侧凸起。 至少L5由具有非球面的塑料透镜组成。
    • 4. 发明授权
    • Zoom lens and imaging apparatus incorporating the same
    • 变焦镜头和包含其的成像装置
    • US08339714B2
    • 2012-12-25
    • US13248570
    • 2011-09-29
    • Akiyoshi TochigiKazuteru KawamuraYasuharu Yamada
    • Akiyoshi TochigiKazuteru KawamuraYasuharu Yamada
    • G02B15/14
    • G02B15/173
    • A zoom lens comprising, in order from an object side thereof, a first lens group of positive refracting power, a second lens group of negative refracting power, an aperture stop, a third lens group of positive refracting power, a fourth lens group of negative refracting power, and a fifth lens group of positive refracting power. Upon zooming from the wide-angle end to the telephoto end, at least the first lens group and the aperture stop remain fixed in position, the second and third lens groups move in the optical axis direction, and the separation between each of the lens groups and the aperture stop changes. Upon focusing from a focusing-on-infinity state to a close-range-focusing state, the fourth lens group moves in the optical axis direction, with satisfaction of the following: −0.36
    • 一种变焦透镜,其从物体侧起依次具有正折射率的第一透镜组,负折射光焦度的第二透镜组,孔径光阑,正折射率的第三透镜组,负折射率的第四透镜组 屈光力和第五透镜组的正折射力。 当从广角端到望远端变焦时,至少第一透镜组和孔径光阑保持固定就位,第二和第三透镜组沿光轴方向移动,并且每个透镜组之间的间隔 并且孔径光阑改变。 从聚焦无限状态向近距离聚焦状态聚焦时,第四透镜组沿光轴方向移动,满足以下条件:-0.36
    • 5. 发明申请
    • ZOOM LENS AND IMAGING APPARATUS INCORPORATING THE SAME
    • 变焦镜头和成像装置同时进行
    • US20120092777A1
    • 2012-04-19
    • US13248570
    • 2011-09-29
    • Akiyoshi TOCHIGIKazuteru KawamuraYasuharu Yamada
    • Akiyoshi TOCHIGIKazuteru KawamuraYasuharu Yamada
    • G02B15/14
    • G02B15/173
    • A zoom lens comprising, in order from an object side thereof, a first lens group of positive refracting power, a second lens group of negative refracting power, an aperture stop, a third lens group of positive refracting power, a fourth lens group of negative refracting power, and a fifth lens group of positive refracting power. Upon zooming from the wide-angle end to the telephoto end, at least the first lens group and the aperture stop remain fixed in position, the second and third lens groups move in the optical axis direction, and the separation between each of the lens groups and the aperture stop changes. Upon focusing from a focusing-on-infinity state to a close-range-focusing state, the fourth lens group moves in the optical axis direction, with satisfaction of the following: −0.36
    • 一种变焦透镜,其从物体侧起依次具有正折射率的第一透镜组,负折射率的第二透镜组,孔径光阑,正折射率的第三透镜组,负折射率的第四透镜组 屈光力和第五透镜组的正折射力。 当从广角端到望远端变焦时,至少第一透镜组和孔径光阑保持固定就位,第二和第三透镜组沿光轴方向移动,并且每个透镜组之间的间隔 并且孔径光阑改变。 从聚焦无限状态向近距离聚焦状态聚焦时,第四透镜组沿光轴方向移动,满足以下条件:-0.36
    • 6. 发明申请
    • Image-formation lens, and imaging system using the same
    • 图像形成透镜和使用其的成像系统
    • US20050254139A1
    • 2005-11-17
    • US11130176
    • 2005-05-17
    • Toshio TakahashiKazuteru KawamuraMasashi HankawaEiji Shirota
    • Toshio TakahashiKazuteru KawamuraMasashi HankawaEiji Shirota
    • G02B15/20G02B15/14
    • G02B15/14
    • The invention relates to an image-formation lens system well balanced among cost reductions, size reductions and performance improvements and an imaging system incorporating that lens system. The image-formation lens system in the imaging system is a zoom lens system that comprises at least three lens groups including a first lens group G1 of positive power, a second lens group G2 of positive power and a third lens group G3 of negative power, wherein zooming is carried out by varying the spacing between adjacent lens groups. The zoom lens system comprises a total of up to 8 lenses, and satisfies the following conditions: 0.07
    • 本发明涉及在成本降低,尺寸减小和性能改进之间良好平衡的图像形成透镜系统以及并入该透镜系统的成像系统。 成像系统中的图像形成透镜系统是变焦透镜系统,其包括至少三个透镜组,其包括正功率的第一透镜组G 1,正光焦度的第二透镜组G 2和第三透镜组G 3 负功率,其中通过改变相邻透镜组之间的间距来执行变焦。 变焦透镜系统包括总共多达8个透镜,并且满足以下条件:<?in-line-formula description =“In-line formula”end =“lead”?> 0.07 / IH <0.23(1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead “?> 1.8 <?in-line-formula description =”In-line Formulas“ end =“lead”?> - 8% <8%(3)<?in-line-formula description =“In-line Formulas”end =“tail”?> 在远摄端的变焦透镜系统的d行和g行之间的后焦点位置之间的差异是IH,在图像平面处的最大图像高度,WideFno和TeleFno是F - 分别在广角端和远摄端的变焦透镜系统的d线处,并且DTL 是在28.0°的视角处的d线失真量 广角端。
    • 9. 发明授权
    • Image-formation lens system, and imaging system using the same
    • 图像形成透镜系统和使用其的成像系统
    • US06934091B2
    • 2005-08-23
    • US10704654
    • 2003-11-12
    • Toshio TakahashiKazuteru KawamuraMasashi HankawaEiji Shirota
    • Toshio TakahashiKazuteru KawamuraMasashi HankawaEiji Shirota
    • G02B15/20G02B15/14
    • G02B15/14
    • The invention relates to an image-formation lens system well balanced among cost reductions, size reductions and performance improvements and an imaging system incorporating that lens system. The image-formation lens system in the imaging system is a zoom lens system that comprises at least three lens groups including a first lens group G1 of positive power, a second lens group G2 of positive power and a third lens group G3 of negative power, wherein zooming is carried out by varying the spacing between adjacent lens groups. The zoom lens system comprises a total of up to 8 lenses, and satisfies the following conditions: 0.07
    • 本发明涉及在成本降低,尺寸减小和性能改进之间良好平衡的图像形成透镜系统以及结合该透镜系统的成像系统。 成像系统中的图像形成透镜系统是变焦透镜系统,其包括至少三个透镜组,其包括正功率的第一透镜组G 1,正光焦度的第二透镜组G 2和第三透镜组G 3 负功率,其中通过改变相邻透镜组之间的间距来执行变焦。 变焦透镜系统包括总共多达8个透镜,并且满足以下条件:<?in-line-formula description =“In-line Formulas”end =“lead”?> 0.07 / IH <0.23(1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead “?> 1.8 <?in-line-formula description =”In-line Formulas“ - =“lead”?> - 8% <8%(3)<?in-line-formula description =“In-line Formulas”end =“tail”?> 在远摄端的变焦透镜系统的d行和g行之间的后焦点位置之间的差异是IH,在图像平面处的最大图像高度,WideFno和TeleFno是F - 分别在广角端和远摄端的变焦透镜系统的d线处,并且DTL 是在视角为28.0°的d线失真的量 广角端。
    • 10. 发明申请
    • Zoom lens and image pickup apparatus equipped with same
    • 变焦镜头和配备相机的摄像设备
    • US20090257131A1
    • 2009-10-15
    • US12384976
    • 2009-04-09
    • Masahiro KatakuraKazuteru Kawamura
    • Masahiro KatakuraKazuteru Kawamura
    • G02B15/177
    • G02B15/177
    • An apparatus has a zoom lens and an image pickup element disposed on the image side of the zoom lens that converts an optical image formed by the zoom lens into an electrical signal. The zoom lens includes, in order from the object side to the image side, a negative first lens unit, a negative second lens unit, a positive third lens unit, and a negative fourth lens unit. During zooming from the wide angle end to the telephoto end, the distance between the first lens unit and the second lens unit changes, the distance between the second lens unit and the third lens unit changes, and the distance between the third lens unit and the fourth lens unit changes, the distance between the second lens unit and the third lens unit being smaller at the telephoto end than at the wide angle end. The first lens unit includes a reflecting surface that deflects the optical path, and the zoom lens satisfies the following condition (1): −100
    • 设备具有变焦透镜和设置在变焦透镜的像侧上的图像拾取元件,其将由变焦透镜形成的光学图像转换为电信号。 变焦透镜从物体侧到像侧依次包括负的第一透镜单元,负的第二透镜单元,正的第三透镜单元和负的第四透镜单元。 在从广角端到远摄端的变焦期间,第一透镜单元和第二透镜单元之间的距离改变,第二透镜单元和第三透镜单元之间的距离改变,并且第三透镜单元与第三透镜单元之间的距离 第四透镜单元改变,第二透镜单元和第三透镜单元之间的距离在望远端比在广角端处更小。 第一透镜单元包括使光路偏转的反射面,变焦透镜满足以下条件(1):-100