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    • 21. 发明授权
    • Eyepiece system having wide visual field
    • 目视系统具有宽视野
    • US6094310A
    • 2000-07-25
    • US236477
    • 1999-01-25
    • Masashi Hankawa
    • Masashi Hankawa
    • G02B25/00
    • G02B25/001
    • An eyepiece system comprising, in order from the object side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power, and configured to locate an intermediate image formed by an objective lens system between the first lens unit and the second lens unit: the first lens unit being a negative lens unit having an object side surface which is convex toward the object side. This eyepiece system has a wide visual field and a long eye relief, and corrects aberrations favorably even at marginal portions of the visual field.
    • 一种目镜系统,其从物体侧依次包括具有负屈光力的第一透镜单元和具有正折光力的第二透镜单元,并且被配置为将由物镜系统形成的中间图像定位在第一透镜单元 和第二透镜单元:第一透镜单元是具有朝物体侧凸出的物体侧表面的负透镜单元。 该目镜系统具有宽阔的视野和长眼睛的缓解,并且即使在视野的边缘部分也能有利地校正像差。
    • 23. 发明授权
    • Zoom lens and image pickup apparatus equipped with same
    • 变焦镜头和配备相机的摄像设备
    • US08014078B2
    • 2011-09-06
    • US12806175
    • 2010-08-05
    • Masashi Hankawa
    • Masashi Hankawa
    • G02B15/14
    • G02B15/177
    • A zoom lens is composed, in order from the object side thereof, of a front side lens unit having a negative refracting power at the wide angle end and a rear side lens unit having a positive refracting power at the wide angle end. The front side lens unit includes a first lens unit located closest to the object side and having a positive refracting power and a second lens unit located on the image side of the first lens unit and having a negative refracting power. The distance between the first lens unit and the second lens unit is larger at the telephoto end than at the wide angle end. The rear side lens unit includes a third lens unit located closer to the object side at the telephoto end than at the wide angle end and having a positive refracting power, the distance between the third lens unit and the second lens unit being smaller at the telephoto end than at the wide angle end. The third lens unit satisfies the following condition: 0.01
    • 变焦透镜从其物体侧依次构成在广角端具有负折射力的前侧透镜单元和在广角端具有正折射力的后侧透镜单元。 前侧透镜单元包括最靠近物体侧并且具有正折射力的第一透镜单元和位于第一透镜单元的像侧上并具有负折射光焦度的第二透镜单元。 第一透镜单元和第二透镜单元之间的距离在远摄端比在广角端处更大。 后侧透镜单元包括第三透镜单元,其在远摄端处比在广角端处更靠近物体侧并且具有正折射力,第三透镜​​单元与第二透镜单元之间的距离在远摄时较小 比在广角端。 第三透镜单元满足以下条件:0.01
    • 24. 发明授权
    • Zoom lens and image pickup apparatus equipped with same
    • 变焦镜头和配备相机的摄像设备
    • US07948687B2
    • 2011-05-24
    • US12806174
    • 2010-08-05
    • Masashi Hankawa
    • Masashi Hankawa
    • G02B15/14
    • G02B15/177
    • A zoom lens is composed, in order from the object side thereof, of a front side lens unit having a negative refracting power at the wide angle end and a rear side lens unit having a positive refracting power at the wide angle end. The front side lens unit includes a first lens unit located closest to the object side and having a positive refracting power and a second lens unit located on the image side of the first lens unit and having a negative refracting power. The distance between the first lens unit and the second lens unit is larger at the telephoto end than at the wide angle end. The rear side lens unit includes a third lens unit located closer to the object side at the telephoto end than at the wide angle end and having a positive refracting power, the distance between the third lens unit and the second lens unit being smaller at the telephoto end than at the wide angle end. The third lens unit satisfies the following condition: 0.01
    • 变焦透镜从其物体侧依次构成在广角端具有负折射力的前侧透镜单元和在广角端具有正折射力的后侧透镜单元。 前侧透镜单元包括最靠近物体侧并且具有正折射力的第一透镜单元和位于第一透镜单元的像侧上并具有负折射光焦度的第二透镜单元。 第一透镜单元和第二透镜单元之间的距离在远摄端比在广角端处更大。 后侧透镜单元包括第三透镜单元,其在远摄端处比在广角端处更靠近物体侧并且具有正折射力,第三透镜​​单元与第二透镜单元之间的距离在远摄时较小 比在广角端。 第三透镜单元满足以下条件:0.01
    • 25. 发明授权
    • Electronic image pickup apparatus using zoom lens system
    • 使用变焦透镜系统的电子摄像装置
    • US07561343B2
    • 2009-07-14
    • US11900309
    • 2007-09-10
    • Masashi HankawaEiji Shirota
    • Masashi HankawaEiji Shirota
    • G02B15/14G02B9/08
    • G02B15/177
    • There is disclosed an electronic image pickup apparatus including an aperture stop disposed on an optical path reflected by a reflective surface of a first lens unit and having a non-circular aperture in a state in which an area of an aperture of the aperture stop is maximized, and a lens arranged closest to an image side on an optical path extending from the reflective surface to an image surface and having a non-circular shape, each of the shape of the non-circular aperture of the aperture stop and the outer shape of the lens is formed such that a length of the aperture which in a direction along an incident optical axis which enters the first lens unit is smaller than that of which in a direction vertical to the incident optical axis which enters the first lens unit and a reflected optical axis reflected by the reflective surface.
    • 公开了一种电子摄像装置,包括设置在由第一透镜单元的反射表面反射的光路上的孔径光阑,并且在孔径光阑的孔径的面积最大化的状态下具有非圆形孔径 以及在从反射面延伸到图像面的光路上最靠近图像侧布置的透镜,并且具有非圆形形状,孔径止动件的非圆形孔的形状和外部形状 透镜被形成为使得沿着入射到第一透镜单元的入射光轴的方向上的孔的长度小于在与入射到第一透镜单元的入射光轴垂直的方向上的孔的长度,并且反射 光轴由反射面反射。
    • 26. 发明申请
    • Zoom lens and imaging apparatus incorporating the same
    • US20090174951A1
    • 2009-07-09
    • US12319050
    • 2008-12-30
    • Masashi HankawaTomoyuki Satori
    • Masashi HankawaTomoyuki Satori
    • G02B15/14
    • G02B15/173
    • A zoom lens comprises, in order from its object side, a front lens group having negative refracting power at a wide-angle end and a rear lens group having positive refracting power at the wide-angle end. The front lens group comprises, in order from the object side, a first lens group of positive refracting power and a second lens group of negative refracting power, and the rear lens group comprises, in order from the object side, a third lens group of positive refracting power and a fourth lens group of positive refracting power. There is an aperture stop interposed between the lens surface located in, and nearest to the object side of, the second lens group and the lens surface located in, and nearest to the image size of, the third lens group. Upon zooming from the wide-angle end to the telephoto end, the spacing between the first lens group and the second lens group grows wide, the spacing between the second lens group and the third lens group becomes narrow, the spacing between the third lens group and the fourth lens group changes, and an F-number grows greatest when the aperture stop is open in the course of zooming from the wide-angle end to the telephoto end.
    • 29. 发明申请
    • Zoom lens system and electronic image pickup apparatus using the same
    • 变焦镜头系统和使用其的电子摄像装置
    • US20070146897A1
    • 2007-06-28
    • US11639608
    • 2006-12-14
    • Kouki HozumiKazuya NishimuraMasashi HankawaToru Miyajima
    • Kouki HozumiKazuya NishimuraMasashi HankawaToru Miyajima
    • G02B15/14
    • G02B15/177
    • A zoom lens system comprising, a first negative lens unit; a second positive lens unit; and a third negative lens unit, wherein a space between the second and third lens units changes during magnification change or focusing operation; the second lens unit and the third lens unit move only to the object side during the magnification change from a wide-angle end to a telephoto end so that a space between the first and second lens units is narrower in the telephoto end than in the wide-angle end; the first lens unit comprises a negative lens and a positive lens; the second lens unit comprises at most three lenses; the third lens unit comprises a negative lens; and the following condition (1) is satisfied: 0.7
    • 一种变焦透镜系统,包括:第一负透镜单元; 第二正透镜单元; 和第三负透镜单元,其中第二和第三透镜单元之间的空间在放大变化或聚焦操作期间改变; 第二透镜单元和第三透镜单元在从广角端到望远端的放大变化期间仅移动到物体侧,使得第一和第二透镜单元之间的空间在远摄端比在宽 角结束 第一透镜单元包括负透镜和正透镜; 所述第二透镜单元至少包括三个透镜; 第三透镜单元包括负透镜; 并且满足以下条件(1):<?in-line-formula description =“In-line formula”end =“lead”?> 0.7
    • 30. 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。