公开(公告)号：US06822808B2

公开(公告)日：2004-11-23

申请号：US10195364

申请日：2002-07-16

申请人： Norihiro Nanba ,  Koji Hoshi ,  Hiroyuki Hamano ,  Makoto Sekita

发明人： Norihiro Nanba ,  Koji Hoshi ,  Hiroyuki Hamano ,  Makoto Sekita

IPC分类号： G02B1514

CPC分类号： G02B15/177

摘要： A zoom lens is constructed with, in order from an object side to an image side, a first lens unit of negative optical power, the first lens unit including a negative meniscus lens having a concave surface facing the image side and a positive meniscus lens having a convex surface facing the object side, a second lens unit of positive optical power, the second lens unit including a cemented lens of positive optical power as a whole disposed on the most image side of the second lens unit, and a lens having a concave surface facing the image side and adjoining a surface on the object side of the cemented lens, and a third lens unit of positive optical power, wherein a separation between the first lens unit and the second lens unit and a separation between the second lens unit and the third lens unit are varied to effect variation of magnification.

摘要翻译： 变焦透镜从物体侧到像侧依次构成具有负光焦度的第一透镜单元，第一透镜单元包括具有面向图像侧的凹面的负弯月形透镜和具有面向像侧的正弯月形透镜， 面向物体侧的凸面，具有正光焦度的第二透镜单元，第二透镜单元整体设置在第二透镜单元的最像侧的正光焦度透镜，以及具有凹面的透镜 表面朝向图像侧并与胶合透镜的物体侧上的表面相邻，以及具有正光焦度的第三透镜单元，其中第一透镜单元和第二透镜单元之间的间隔以及第二透镜单元与第二透镜单元之间的间隔 变化第三透镜单元以实现放大率的变化。

公开(公告)号：US06822806B2

公开(公告)日：2004-11-23

申请号：US10786134

申请日：2004-02-26

申请人： Yoshimasa Suzuki ,  Tetsuhide Takeyama

发明人： Yoshimasa Suzuki ,  Tetsuhide Takeyama

IPC分类号： G02B1514

CPC分类号： G02B15/163

摘要： An imaging optical system has a variable magnification optical system. The variable magnification optical system includes, in order from the object side, a first lens unit with positive refractive power, a second lens unit with positive refractive power, a third lens unit with negative refractive power, a fourth lens unit with positive refractive power, and an aperture stop interposed between the third lens unit and the fourth lens unit. The variable magnification optical system changes an imaging magnification while keeping an object-to-image distance constant. The imaging magnification is changed by varying spacing between the first lens unit and the second lens unit, spacing between the second lens unit and the third lens unit, and spacing between the third lens unit and the fourth lens unit. When the imaging magnification is changed, the imaging optical system satisfies the following conditions in at least one variable magnification state: |En|/L>0.4 |Ex|/|L/&bgr;|>0.4 where En is a distance from a first lens surface on the object side of the variable magnification optical system to the entrance pupil of the imaging optical system, L is the object-to-image distance of the imaging optical system, Ex is a distance from the most image-side lens surface of the variable magnification optical system to the exit pupil of the imaging optical system, and &bgr; is the magnification of the entire system of the imaging optical system.

摘要翻译： 成像光学系统具有可变放大率光学系统。 可变放大率光学系统从物体侧依次包括具有正屈光力的第一透镜单元，具有正屈光力的第二透镜单元，具有负屈光力的第三透镜单元，具有正屈光力的第四透镜单元， 以及插入在第三透镜单元和第四透镜单元之间的孔径光阑。 可变放大倍率光学系统在保持对象间距离保持恒定的同时改变成像倍率。 通过改变第一透镜单元和第二透镜单元之间的间隔，第二透镜单元和第三透镜单元之间的间隔以及第三透镜单元和第四透镜单元之间的间隔来改变成像倍率。 当成像倍率改变时，成像光学系统在至少一个可变放大状态下满足以下条件：其中En是从可变放大光学系统的物体侧的第一透镜表面到成像的入射光瞳的距离 光学系统L是成像光学系统的物体到图像的距离，Ex是从可变倍率光学系统的最大像侧透镜表面到成像光学系统的出射光瞳的距离，β是 成像光学系统的整个系统的放大倍率。

公开(公告)号：US06819499B2

公开(公告)日：2004-11-16

申请号：US10611970

申请日：2003-07-03

申请人： Masahito Watanabe

发明人： Masahito Watanabe

IPC分类号： G02B1514

CPC分类号： G02B15/177

摘要： The invention provides a zoom lens system which has a zoom ratio of about 3, a wide field angle on the wide-angle end and a small F-number and enables satisfactory image-formation capability to be obtained. The zoom lens system comprises a first lens group G1 having negative power, an aperture stop, a second lens group G2 having positive power and a third lens group G3 having positive power. For zooming, the first and second lens groups G1 and G2 move on the optical axis with a varying spacing between adjacent lens groups while the third lens group G3 remains fixed. During zooming, the stop moves in unison with the second lens group. The first lens group consists of a negative, a negative and a positive lens and the third lens group consists of one lens. The first lens group further comprises a lens having an aspherical surface satisfying condition (1), and the third lens group further comprises a lens having an aspherical surface satisfying condition (2).

摘要翻译： 本发明提供一种变焦透镜系统，该变焦透镜系统具有大约3的变焦比，广角端的宽视角和小的F数，并且能够获得令人满意的图像形成能力。 变焦透镜系统包括具有负功率的第一透镜组G1，孔径光阑，具有正光焦度的第二透镜组G2和具有正光焦度的第三透镜组G3。 为了变焦，第一和第二透镜组G1和G2在光轴上以相邻透镜组之间的间隔变化而移动，而第三透镜组G3保持固定。 在变焦期间，停止与第二个镜头组一致移动。 第一透镜组由负像素，负像素和正透镜组成，第三透镜​​组由一个透镜组成。 第一透镜组还包括具有满足条件（1）的非球面的透镜，并且第三透镜组还包括具有满足条件（2）的非球面的透镜。

公开(公告)号：US06809882B2

公开(公告)日：2004-10-26

申请号：US10390635

申请日：2003-03-19

申请人： Akiko Takatsuki

发明人： Akiko Takatsuki

IPC分类号： G02B1514

CPC分类号： G02B15/177

摘要： A wide-angle zoom lens is disclosed having only two lens groups, of negative and positive refractive power in order from the object side, respectively, and which provides an image angle at the wide-angle end of at least 100°. Zooming is performed by moving the first lens group and the second lens group along the optical axis. The first lens group is formed of, in sequential order from the object side, a negative meniscus lens element with its convex surface on the object side, two negative lens elements, and a positive lens element. The second lens group is formed of, in sequential order from the object side, two positive lens elements, a biconcave lens element, and two positive lens elements. Various conditions are preferably satisfied so as to minimize aberrations and make the zoom lens compact and easy to manufacture.

摘要翻译： 公开了分别具有从物体侧起依次具有负折射力和正屈光力的两个透镜组的广角变焦透镜，并且其在广角端处提供至少100°的图像角度。 通过沿着光轴移动第一透镜组和第二透镜组来执行变焦。 第一透镜组从物体侧起按顺序形成具有物体侧的凸面的负弯月形透镜元件，两个负透镜元件和正透镜元件。 第二透镜组从物体侧依次顺序形成有两个正透镜元件，双凹透镜元件和两个正透镜元件。 优选满足各种条件以使像差最小化并使变焦透镜紧凑并易于制造。

公开(公告)号：US06809879B2

公开(公告)日：2004-10-26

申请号：US10294774

申请日：2002-11-15

申请人： Shinichi Mihara

发明人： Shinichi Mihara

IPC分类号： G02B1514

CPC分类号： G02B5/20 ,  G02B5/22 ,  G02B5/26 ,  G02B13/18 ,  G02B15/177 ,  G02B15/20 ,  H04N5/225

摘要： The invention provides a zoom lens that comprises a reduced number of lens elements, is compact and simplified, and has high image-formation capability, thereby achieving thorough size reductions in video cameras or digital cameras, and an electronic imaging system using the same. The zoom lens comprises a first lens group G1 of negative refracting power, a second lens group G2 of positive refracting power and a third lens group G3 of positive refracting power. Upon zooming from the wide-angle end to the telephoto end of the zoom lens, the second lens group G2 moves toward the object side alone of the zoom lens, and the third lens group G3 moves while the spacing between the third lens group G3 and the second lens group G2 varies. The second lens group G2 is composed of a front subgroup and a rear subgroup. The front subgroup is composed of a doublet component consisting of, in order from its object side, a positive lens element having an aspheric surface and a negative lens element, and the rear subgroup is composed of one positive lens component. The third lens group G3 then satisfies condition (1) with respect to the axial radii of curvature of the surfaces located nearest to the object and image sides of the third lens group G3.

摘要翻译： 变焦镜头包括负屈光力的第一透镜组G1，正屈光力的第二透镜组G2和正折光力的第三透镜组G3。 在变焦透镜的广角端到远摄端放大后，第二透镜组G2单独向变焦透镜朝向物体侧移动，第三透镜​​组G3移动，同时第三透镜组G3和 第二透镜组G2变化。 第二透镜组G2由前子组和后子组构成。 前部子组由双面组件构成，从其物体侧起依次具有具有非球面的正透镜元件和负透镜元件，后子组由一个正透镜组件构成。

公开(公告)号：US06807013B2

公开(公告)日：2004-10-19

申请号：US10327901

申请日：2002-12-26

申请人： Yoshinori Kobayashi ,  Shigetomo Ishibashi ,  Masato Hara

发明人： Yoshinori Kobayashi ,  Shigetomo Ishibashi ,  Masato Hara

IPC分类号： G02B1514

CPC分类号： G03F7/70225 ,  G03B27/42 ,  G03F7/70258 ,  G03F7/70275 ,  G03F7/70466 ,  G03F7/70475 ,  G03F7/70791 ,  G03F9/7003

摘要： The projection aligner for transferring an image of a mask pattern of a mask onto an object to be exposed comprises a projection optical system that forms the image of the mask pattern onto the object, an expansion ratio determiner that measures lengths of the object in first and second directions and determines first and second expansion ratios, which are expansion ratios of the object in the first and second directions, respectively, based on those lengths, and a magnification controller that adjusts the magnification of the projection optical system to a value between the first and second expansion ratios.

摘要翻译： 用于将掩模的掩模图案的图像转印到要曝光的对象上的投影对准器包括将掩模图案的图像形成在对象上的投影光学系统，测量物体的长度的扩张比确定器， 第二方向，并且基于这些长度分别确定第一和第二方向上的物体的膨胀比的第一和第二膨胀比;以及放大控制器，其将投影光学系统的倍率调整为第一和第二 和第二扩张比。

公开(公告)号：US06804064B2

公开(公告)日：2004-10-12

申请号：US10687631

申请日：2003-10-20

申请人： Makoto Hirakawa

发明人： Makoto Hirakawa

IPC分类号： G02B1514

CPC分类号： G02B15/14

摘要： A lens (1), a lens (2) and a lens (3) constitute a first group of lenses, a lens (4), a lens (5), a lens (6) and a lens (7) constitute a second group of lenses, and a lens (8) constitutes a third group of lenses in a zoom lens of the present invention. The second group of lenses is constituted by a first positive lens (4), a negative lens (5) which is in a meniscus shape which faces its convex shape toward a side of an object (70), a second positive lens (6) in a meniscus shape which faces its convex shape toward the object (70) side, and the third positive lens (7), which are in order from the object (70) side.

摘要翻译： 透镜（1），透镜（2）和透镜（3）构成第一组透镜，透镜（4），透镜（5），透镜（6）和透镜（7）构成第二透镜 一组透镜和透镜（8）构成本发明的变焦透镜中的第三组透镜。 第二组透镜由第一正透镜（4），朝向物体（70）的朝向其凸形的弯月形状的负透镜（5），第二正透镜（6） 朝向物体（70）侧朝向其凸形的弯液面形状以及从物体（70）侧开始的顺序的第三正透镜（7）。

公开(公告)号：US06788475B2

公开(公告)日：2004-09-07

申请号：US10101727

申请日：2002-03-21

申请人： Hiroshi Nomura ,  Yoshihiro Yamazaki ,  Isao Okuda ,  Satoru Nakamura

发明人： Hiroshi Nomura ,  Yoshihiro Yamazaki ,  Isao Okuda ,  Satoru Nakamura

IPC分类号： G02B1514

CPC分类号： G02B7/102

摘要： A lens barrel includes a stationary barrel, an outer ring, an inner ring, a cam ring and a movable lens frame, arranged in that order from outermost side, wherein the axes thereof coincide with a common optical axis, the outer ring being guided linearly in the optical axis direction by the stationary barrel, the inner ring being linearly guided in the optical axis direction by the outer ring, and the cam ring being rotatable to move the movable lens frame in the optical axis direction; and a lens barrier mechanism having an aperture positioned in front of the movable lens frame, the lens barrier mechanism being provided on a front opening of the inner ring, for opening and closing the aperture.

摘要翻译： 镜筒包括从最外侧按顺序布置的固定镜筒，外圈，内圈，凸轮环和可移动透镜框，其中轴与公共光轴重合，外圈被线性引导 通过固定筒在光轴方向上，内环通过外圈在光轴方向上线性地引导，并且凸轮环可旋转以使可动透镜框在光轴方向上移动; 以及透镜屏障机构，其具有定位在可移动透镜框架前面的孔，透镜屏障机构设置在内圈的前开口上，用于打开和关闭孔。

公开(公告)号：US06785059B2

公开(公告)日：2004-08-31

申请号：US10313656

申请日：2002-12-06

申请人： Tamotsu Koiwai

发明人： Tamotsu Koiwai

IPC分类号： G02B1514

CPC分类号： G02B7/021 ,  G02B7/102

摘要： A lens barrel having lens holding frames for holding a plurality of lenses is composed of a first lens, a second lens, one of the lens holding frames holding the first and second lenses, having a first opening disposed at one end in correspondence with the first lens, and having a second opening disposed at another end in correspondence with the second lens, first abutment portions prescribing the position of the first lens in an optical axis direction on the first opening side and disposed at a plurality of positions around the inner periphery of the lens holding frame, a second abutment portion prescribing the position of the second lens in the optical axis direction on the second opening side, first engagement portions disposed at a plurality of positions around the inner periphery of the lens holding frame on a side nearer to the first opening than the first and second abutment portions and engaged with the first lens, and a second engagement portion disposed around the inner periphery of the lens holding frame on a side nearer to the second opening than the first and the second abutment portion and engaged with the second lens, wherein the first engagement portions and the first abutment portions are disposed at different positions in the circumferential direction of the lens holding frame.

摘要翻译： 具有用于保持多个透镜的透镜保持框架的镜筒由第一透镜，第二透镜，保持第一透镜和第二透镜的透镜保持框架中的一个构成，第一透镜与第一透镜相对应地具有设置在一端的第一开口 透镜，并且具有与第二透镜相对应的另一端的第二开口，第一抵接部分，其规定第一透镜在第一开口侧的光轴方向上的位置，并且设置在围绕第二透镜的内周的多个位置 透镜保持框架，在第二开口侧上规定第二透镜在光轴方向上的位置的第二抵接部，第一接合部，其设置在透镜保持框架的内周的多个位置，更靠近 所述第一开口比所述第一和第二抵接部分与所述第一透镜接合，以及设置在所述内周边周围的第二接合部 所述透镜保持框架在比所述第一和第二邻接部分更靠近所述第二开口的一侧并与所述第二透镜接合，其中所述第一接合部分和所述第一邻接部分设置在所述第二接合部分的周向方向上的不同位置 镜头支架

公开(公告)号：US06785056B2

公开(公告)日：2004-08-31

申请号：US10654470

申请日：2003-09-04

申请人： Shinichi Mihara

发明人： Shinichi Mihara

IPC分类号： G02B1514

CPC分类号： H04N5/2254 ,  G02B15/177 ,  G02B26/023

摘要： An electronic picture taking apparatus comprises a zoom lens system and an image pickup device. The zoom lens system has a type of movement suitable for stable, high performance in the range from infinite to near distance and having a reduced thickness. The zoom lens system comprises at least four lens units. A foremost first lens unit on the object side of said zoom lens system has a negative refractive power. Each of three consecutive lens units has variable space on the image side thereof between an adjacent lens unit for performing a zooming operation. A rearmost lens unit of the zoom lens system consists of a single positive lens element having an aspherical surface and being fixed during the zooming operation. The zoom lens system includes an aperture stop moving incorporated with the second lens unit which is adjacent to the first lens unit.

摘要翻译： 电子摄像装置包括变焦透镜系统和图像拾取装置。 变焦透镜系统具有适合于在无限远到近距离范围内稳定，高性能并具有减小的厚度的类型的运动。 变焦透镜系统包括至少四个透镜单元。 在所述变焦透镜系统的物体侧上的最前面的第一透镜单元具有负折光力。 三个相继的透镜单元中的每一个在其相邻透镜单元之间的图像侧上具有可变空间，用于执行缩放操作。 变焦透镜系统的最后的透镜单元由具有非球面的单个正透镜元件组成，并且在变焦操作期间被固定。 变焦透镜系统包括与第一透镜单元相邻的第二透镜单元结合的孔径光阑移动。