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1. 发明授权

US06215600B1 Zoom lens 有权
标题翻译：变焦镜头
公开(公告)号：US06215600B1
公开(公告)日：2001-04-10
申请号：US09160769
申请日：1998-09-24
申请人： Takeshi Nishimura , Yoshinori Itoh
发明人： Takeshi Nishimura , Yoshinori Itoh
IPC分类号： G02B1514
CPC分类号： G02B15/173
摘要： A zoom lens which includes, in order from an object side, a first lens unit of positive refractive power, a second lens unit of positive refractive power and a third lens unit of negative refractive power, wherein the first, second and third lens units are moved such that, during zooming from a wide-angle end to a telephoto end, a separation between the first lens unit and the second lens unit increases and a separation between the second lens unit and the third lens unit decreases, and wherein the zoom lens has a diffractive optical element.
摘要翻译：一种变焦透镜，其从物体侧依次包括正屈光力的第一透镜单元，正屈光力的第二透镜单元和负折射光焦度的第三透镜单元，其中，所述第一，第二和第三透镜单元为移动，使得在从广角端到望远端的变焦期间，第一透镜单元和第二透镜单元之间的间隔增加，并且第二透镜单元和第三透镜单元之间的间隔减小，并且其中变焦透镜具有衍射光学元件。

2. 发明授权

US06556357B1 Zoom lens 失效
标题翻译：变焦镜头
公开(公告)号：US06556357B1
公开(公告)日：2003-04-29
申请号：US09638479
申请日：2000-08-14
申请人： Takeshi Nishimura , Yoshinori Itoh
发明人： Takeshi Nishimura , Yoshinori Itoh
IPC分类号： G02B1514
CPC分类号： G02B15/173
摘要： A zoom lens which includes, in order from an object side, a first lens unit of positive refractive power, a second lens unit of positive refractive power and a third lens unit of negative refractive power, wherein the first, second and third lens units are moved such that, during zooming from a wide-angle end to a telephoto end, a separation between the first lens unit and the second lens unit increases and a separation between the second lens unit and the third lens unit decreases, and wherein the zoom lens has a diffractive optical element.
摘要翻译：一种变焦透镜，其从物体侧依次包括正屈光力的第一透镜单元，正屈光力的第二透镜单元和负折射光焦度的第三透镜单元，其中，所述第一，第二和第三透镜单元为移动，使得在从广角端到望远端的变焦期间，第一透镜单元和第二透镜单元之间的间隔增加，并且第二透镜单元和第三透镜单元之间的间隔减小，并且其中变焦透镜具有衍射光学元件。

3. 发明申请

US20060007560A1 Zoom lens system and image pickup apparatus having the same 有权
公开(公告)号：US20060007560A1
公开(公告)日：2006-01-12
申请号：US11168164
申请日：2005-06-27
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： A zoom lens system including, from the object side to the image side, a first lens unit and a second lens unit, where when zooming, the distance between the first lens unit and the second lens unit changes. In at least one exemplary embodiment, the first lens unit includes a first lens element having negative optical power, and a second lens element having positive optical power.

4. 发明申请

US20050280902A1 Zoom lens system and image pickup apparatus including the same 失效
标题翻译：变焦透镜系统和包括其的摄像装置
公开(公告)号：US20050280902A1
公开(公告)日：2005-12-22
申请号：US11154042
申请日：2005-06-15
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B15/14 , G02B15/177
CPC分类号： G02B15/177
摘要： A zoom lens system in which reductions in the number of lenses and entire lens length are realized is provided. The zoom lens system includes, in order from an object side to an image side, a first lens unit having negative optical power, a second lens unit having positive optical power, and a third lens unit having positive optical power. During zooming from a wide-angle end to a telephoto end, an interval between the first lens unit and the second lens unit reduces and an interval between the second lens unit and the third lens unit changes. An aspherical lens is used for a positive lens element of the first lens unit. Shapes of respective lens elements composing the first lens unit, an interval therebetween, and the like are suitably set.
摘要翻译：提供了实现透镜数量减少和透镜长度全部的变焦透镜系统。变焦透镜系统从物体侧到像侧依次包括具有负光焦度的第一透镜单元，具有正光焦度的第二透镜单元和具有正光焦度的第三透镜单元。在从广角端到长焦端的变焦期间，第一透镜单元和第二透镜单元之间的间隔减小，并且第二透镜单元和第三透镜单元之间的间隔变化。非球面透镜用于第一透镜单元的正透镜元件。适当地设定构成第一透镜单元的各透镜元件的形状，间隔等。

5. 发明授权

US06968128B2 Zoom lens and camera having the same 有权
标题翻译：变焦镜头和相机具有相同的功能
公开(公告)号：US06968128B2
公开(公告)日：2005-11-22
申请号：US10161832
申请日：2002-06-04
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B15/16 , G02B13/18 , G02B13/22 , G02B15/177 , G02B15/20 , G03B5/00 , G02B15/14
CPC分类号： G02B15/177
摘要： A zoom lens includes in order from the object side to the image side, a first lens unit of negative optical power and a second lens unit of positive optical power. Zooming is effected by varying the interval between the first lens unit and the second lens unit. The second lens unit has, in order from the object side to the image side, an aspherical positive lens and an aspherical negative lens.
摘要翻译：变焦透镜从物体侧到像侧依次包括负光焦度的第一透镜单元和正光焦度的第二透镜单元。通过改变第一透镜单元和第二透镜单元之间的间隔来实现变焦。第二透镜单元从物体侧到像侧依次具有非球面正透镜和非球面负透镜。

6. 发明申请

US20050036211A1 Zoom lens system and image pickup apparatus having zoom lens system 失效
标题翻译：具有变焦透镜系统的变焦透镜系统和摄像装置
公开(公告)号：US20050036211A1
公开(公告)日：2005-02-17
申请号：US10916335
申请日：2004-08-11
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B15/20 , G02B13/16 , G02B13/18 , G02B15/163 , G02B15/177 , G03B17/12 , H04N5/225 , G02B15/14
CPC分类号： G02B15/177 , G02B13/16
摘要： Provided is a zoom lens system, including a first lens unit having negative refracting power, a second lens unit having positive refracting power, and a third lens unit having positive refracting power, which are disposed in order from an object side to an image side. The second lens unit is moved to the object side in zooming from a wide angle end to a telephoto end such that an interval between the first lens unit and the second lens unit at the telephoto end becomes smaller than an interval between the first lens unit and the second lens unit at the wide angle end. The first lens unit includes a first lens element having negative refracting power, a second lens element having negative refracting power, and a third lens element having positive refracting power, which are disposed in order from the object side to the image side. The first lens element has an aspherical surface of a shape that the negative refracting power decreases from a lens central portion to a lens peripheral portion. The second lens unit is formed in a meniscus shape which is convex on the object side. A refractive index of a material constituting the first lens element and a refractive index of a material constituting the second lens element are appropriately set.
摘要翻译：提供了一种变焦透镜系统，其包括具有负折射力的第一透镜单元，具有正折射率的第二透镜单元和具有正折射率的第三透镜单元，其从物体侧到像侧依次布置。第二透镜单元从广角端向望远端变焦到物体侧，使得第一透镜单元与第二透镜单元在望远端的间隔变得小于第一透镜单元和第二透镜单元之间的间隔第二透镜单元处于广角端。第一透镜单元包括具有负折射力的第一透镜元件，具有负折射率的第二透镜元件和具有正折射率的第三透镜元件，其从物体侧到像侧依次布置。第一透镜元件具有从透镜中心部分到透镜周边部分的负折射力减小的形状的非球面。第二透镜单元形成为在物体侧凸起的弯液面形状。适当地设定构成第一透镜元件的材料的折射率和构成第二透镜元件的材料的折射率。

7. 发明授权

US06327099B1 Zoom lens and optical device having the same 有权
标题翻译：具有相同的变焦镜头和光学装置
公开(公告)号：US06327099B1
公开(公告)日：2001-12-04
申请号：US09524572
申请日：2000-03-13
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B1514
CPC分类号： G02B15/177
摘要： A zoom lens is enabled to favorably correct aberrations even when a vibration-proofing operation is performed, despite high magnification thereof. This zoom lens includes, in order from an object side, a first lens unit of negative refractive power, a second lens unit of positive refractive power, a third lens unit of positive refractive power, and a fourth lens unit of negative refractive power. When performing zooming from a wide-angle end of this zoom lens to a telephoto end thereof, both of the spacing between the first and second lens units increases, and the spacing between the second and third lens units increase, while the spacing between the third and fourth lens units decreases. Further, an image of an object is displaced by moving the first lens unit or a part of the second lens unit in such a manner as to have a component perpendicular to an optical axis. Thus, an image blur is corrected when the zoom lens vibrates.
摘要翻译：即使进行了防振操作，变焦镜头也能够有利地校正像差，尽管其高倍率。该变焦透镜从物体侧依次包括负折光力的第一透镜单元，正折光力的第二透镜单元，正折光力的第三透镜单元和负折射光焦度的第四透镜单元。当从该变焦透镜的广角端到其远摄端进行变焦时，第一和第二透镜单元之间的间隔都增加，并且第二和第三透镜单元之间的间隔增加，而第三透镜单元之间的间隔第四透镜单元减少。此外，通过使第一透镜单元或第二透镜单元的一部分以垂直于光轴的分量的方式移动物体的图像。因此，当变焦镜头振动时，校正图像模糊。

8. 发明授权

US5687027A Zoom lens for optical apparatus such as camera 失效
标题翻译：适用于相机等光学设备的变焦镜头
公开(公告)号：US5687027A
公开(公告)日：1997-11-11
申请号：US607640
申请日：1996-02-27
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B13/18 , G02B15/16 , G02B15/14
CPC分类号： G02B15/161
摘要： To attain a compact wide-angle 2-unit zoom lens having a variable magnification range of 2.6 to 2.9 or thereabout which is well corrected for high optical performance throughout the entire variable magnification range with the total length shortened, the zoom lens comprises, in order from the object side, a first lens unit of positive refractive power and a second lens unit of negative refractive power, the separation between both the first and second lens units being varied to vary magnification, wherein an aspheric surface layer is formed on a lens surface of the object side among the lenses made of glass in the second lens unit by coating that lens surface with transparent resin and then setting the transparent resin.
摘要翻译：为了获得具有可变倍率范围为2.6至2.9的紧凑型广角2单位变焦镜头，或者在全长缩短的整个可变倍率范围内对于高光学性能进行良好校正的紧凑型广角2单位变焦镜头，变焦镜头按顺序包括从物体侧开始具有正折光力的第一透镜单元和具有负折光力的第二透镜单元，第一透镜单元和第二透镜单元之间的间隔被改变以改变放大率，其中非球面表面层形成在透镜表面上通过用透明树脂涂覆该透镜表面，然后设置透明树脂，在第二透镜单元中由玻璃制成的透镜中的物体侧。

9. 发明授权

US5585971A Small-sized variable magnification lens 失效
标题翻译：小型可变放大镜
公开(公告)号：US5585971A
公开(公告)日：1996-12-17
申请号：US210444
申请日：1994-03-21
申请人： Yoshinori Itoh
发明人： Yoshinori Itoh
IPC分类号： G02B13/18 , G02B15/16 , G02B15/14
CPC分类号： G02B15/161
摘要： A zoom lens is disclosed, comprising, from front to rear, a first lens unit having a positive refractive power and a second lens unit having a negative refractive power, an air separation between the first and second lens units being varied to vary the focal length, wherein the first lens unit comprises, from front to rear, a front lens unit having a negative refractive power, a stop and a rear lens unit having a positive refractive power, satisfying the following condition:0.053
摘要翻译：公开了一种变焦透镜，包括从前到后的具有正折光力的第一透镜单元和具有负屈光力的第二透镜单元，第一和第二透镜单元之间的空气间隔被改变以改变焦距其特征在于，所述第一透镜单元从前方向后方包括具有负屈光力的前透镜单元，具有正屈光力的挡片和后透镜单元，满足以下条件：0.053

10. 发明授权

US5342252A Toothed belt 失效
标题翻译：齿形带
公开(公告)号：US5342252A
公开(公告)日：1994-08-30
申请号：US132387
申请日：1993-10-06
申请人： Toru Fujiwara , Yoshinori Itoh
发明人： Toru Fujiwara , Yoshinori Itoh
IPC分类号： F16G1/28 , F16G1/10
CPC分类号： F16G1/28
摘要： Resistance to tooth chipping in toothed belt in which rubber teeth are covered by a tooth cloth, is improved by providing for residual elongation of the tooth cloth so that it does not float or separate from the rubber teeth when tooth-deforming forces are applied, and by providing the tooth cloth with sufficient breaking strength so that the product of its breaking strength and its elongation are at least equal to a specified value.
摘要翻译：通过提供齿布的残余伸长率使得在施加齿变形力时不与橡胶齿悬浮或分离的齿形带中的抗齿性的橡胶齿被齿布覆盖，并且通过使齿布具有足够的断裂强度，使得其断裂强度和伸长率的乘积至少等于规定值。

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