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    • 31. 发明授权
    • Macro lens system
    • 微距镜头系统
    • US5623371A
    • 1997-04-22
    • US496109
    • 1995-06-28
    • Masashi Hankawa
    • Masashi Hankawa
    • G02B13/18G02B9/12G02B9/64G02B13/00G02B15/22
    • G02B13/00
    • The present invention provides a photographic lens system capable of close-up photography in which various aberrations such as spherical aberration and coma, and curvature of field are concurrently corrected in a well-balanced state and which is relatively bright as expressed by an F-number of about 2.8, and is characterized by comprising a first lens group G.sub.1 which includes a front sub-group G.sub.1F having positive refracting power and a rear sub-group G.sub.1R having negative refracting power and has positive refracting power in its entirety, a second lens group G.sub.2 having positive refracting power in its entirety, and a third lens group G.sub.3 having positive refracting power in its entirety, the lens of the front sub-group G.sub.1F nearest to the image side being concave on the image side and the lens of the rear sub-group G.sub.R nearest to the object side being convex on the object side, and also characterized in that when the macro lens system is focused from the object point at infinity on the object point at a shorter distance, the first lens group G.sub.1 including the front and rear lens sub-groups G.sub.1F and G.sub.1R and the second lens group G.sub.2 are moved toward the object side while the third lens group G.sub.3 is fixed.
    • 本发明提供了一种摄影镜头系统,其能够进行特写摄影,其中各种像差如球面像差和彗差以及曲率同时在良好平衡状态下校正,并且由F数表示的相对较亮 为2.8左右,其特征在于包括第一透镜组G1,该第一透镜组G1包括具有正折射率的前子组G1F和具有负折射光焦度的后子组G1R,并且整体具有正折射光焦度,第二透镜组 G2的整体具有正折射力,第三透镜​​组G3整体具有正折射力,最靠近像侧的正面子组G1F的透镜在图像侧是凹的,后侧的透镜 最近物体侧的组GR在物体侧是凸的,并且还特征在于当微距透镜系统从物体上的无限远物体点聚焦在物体上时 指向较短距离时,包括前后透镜子组G1F和G1R的第一透镜组G1和第二透镜组G2在固定第三透镜组G3的同时朝向物体侧移动。
    • 33. 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
    • US20100321546A1
    • 2010-12-23
    • US12806175
    • 2010-08-05
    • Masashi Hankawa
    • Masashi Hankawa
    • H04N5/335G02B15/14
    • 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
    • 34. 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
    • US20100321545A1
    • 2010-12-23
    • US12806174
    • 2010-08-05
    • Masashi Hankawa
    • Masashi Hankawa
    • H04N5/335G02B15/14
    • 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
    • 35. 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
    • US07692872B2
    • 2010-04-06
    • US12317471
    • 2008-12-22
    • Masashi HankawaTomoyuki Satori
    • Masashi HankawaTomoyuki Satori
    • G02B15/14
    • G02B15/173
    • A zoom lens comprises, in order from its object side, a first lens group of positive refracting power, a second lens group of negative refracting power, and a third lens group of positive refracting power located on an image side with respect to the second 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 wider at the telephoto end than at the wide-angle end, and the spacing between the second lens group and the third lens group becomes narrower at the telephoto end than at the wide-angle end. The first lens group comprises a negative lens and a positive lens, and the number of the negative lens in the first lens group is only one. At least one positive lens in the first lens group satisfies the following conditions (1) and (2): 1.80
    • 变焦透镜从其对象侧依次包括正折射率的第一透镜组,负折射光焦度的第二透镜组和位于相对于第二透镜的像侧的正折射率的第三透镜组 组。 当从广角端到长焦端放大时,第一透镜组和第二透镜组之间的间距在远摄端处比在广角端处增长得更宽,并且第二透镜组和第三透镜组之间的间隔 透镜组在远摄端比在广角端变窄。 第一透镜组包括负透镜和正透镜,并且第一透镜组中的负透镜的数量仅为一。 第一透镜组中的至少一个正透镜满足以下条件(1)和(2):1.80
    • 36. 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
    • US20090103186A1
    • 2009-04-23
    • US12287636
    • 2008-10-09
    • 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
    • 39. 发明授权
    • Wide-angle, high-zoom-ratio zoom lens
    • 广角,高倍率变焦镜头
    • US07177092B2
    • 2007-02-13
    • US10329965
    • 2002-12-27
    • Tomoyuki SatoriMasashi Hankawa
    • Tomoyuki SatoriMasashi Hankawa
    • G02B15/14
    • G02B15/173
    • The invention relates to a four- or five-group zoom lens that ensures wide-angle performance, high zoom ratios and high quality with a more reduced number of lenses than ever before. The zoom lens comprises, in order from its object side, a first lens group G1 having positive power, a second lens group G2 having negative power, a third lens group G3 having positive power, a fourth lens group G4 having negative power and a fifth lens group G5 having positive power. The fourth lens group G4 comprises one lens. For zooming, all the spacings between the respective lens groups vary and the first lens group G1 moves in such a way as to arrive at the object side at the telephoto end position rather than at the wide-angle end position.
    • 本发明涉及一种四组或五组变焦镜头,可以确保广角性能,高变焦比和高品质,而镜头数量比以往更少。 变焦透镜从其物体侧依次包括具有正光焦度的第一透镜组G 1,具有负光焦度的第二透镜组G 2,具有正光焦度的第三透镜组G 3,具有正光焦度的第四透镜组G 4 功率和具有正功率的第五透镜组G 5。 第四透镜组G 4包括一个透镜。 对于变焦,各透镜组之间的所有间距都变化,并且第一透镜组G 1以在远摄端位置而不是在广角端位置到达物体侧的方式移动。