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1. 发明授权

US06728047B2 Compact photographing lens 失效
标题翻译：紧凑型拍摄镜头
公开(公告)号：US06728047B2
公开(公告)日：2004-04-27
申请号：US10374398
申请日：2003-02-26
申请人： Hiroshi Sato , Etsuro Kawakami
发明人： Hiroshi Sato , Etsuro Kawakami
IPC分类号： G02B912
CPC分类号： G02B13/006 , G02B9/40 , G02B13/0035
摘要： This invention is related to a compact photographing lens wherein an aperture stop is arranged at a position closest to an object, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side, the first lens group is formed by arranging, sequentially from the object side, a first lens having a positive refracting power and a second lens having a negative refracting power and bonded to the first lens, the second lens being formed from a meniscus lens with a concave surface facing the object side, the second lens group is formed from only a third lens as a meniscus lens which has at least one aspherical refracting surface and a concave surface facing the object side, the third lens group is formed from only a fourth lens as a meniscus lens which has at least one aspherical refracting surface and a convex surface facing the object side.
摘要翻译：本发明涉及一种小型拍摄镜头，其中孔径光阑被布置在最靠近物体的位置，第一透镜组，第二透镜组和第三透镜组从物体侧依次布置，第一透镜组通过从物体侧依次布置具有正折射率的第一透镜和具有负折射率的第二透镜并结合到第一透镜，第二透镜由具有面向第一透镜的凹面的弯月形透镜形成，物镜侧，第二透镜组仅由具有至少一个非球面折射表面和面向物体侧的凹面的弯月形透镜形成，第三透镜组仅由作为弯月形透镜的第四透镜形成其具有至少一个非球面折射表面和面向物体侧的凸形表面。

2. 发明授权

US07529034B2 Zoom lens and projector using zoom lens 有权
标题翻译：变焦镜头和投影机使用变焦镜头
公开(公告)号：US07529034B2
公开(公告)日：2009-05-05
申请号：US11799612
申请日：2007-05-02
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： There is provided a compact zoom lens having a small lens aperture which an image from a light valve such as a DMD is projected on to a screen in an enlarged scale.There is provided a zoom lens comprising, in order from a magnifying side, a first lens group having a negative refractive power as a whole, a second lens group having a positive or negative refractive power as a whole, a third lens group having a positive refractive power as a whole and a fourth lens group having a positive refractive power as a whole, wherein a variable power as a whole lens system thereof is established by configuring such that the fourth lens group is left fixed while a variable power is effected, and the first lens group, the second lens group and the third lens group are made to move on the optical axis.
摘要翻译：提供了具有小透镜孔径的紧凑型变焦透镜，来自诸如DMD的光阀的图像以放大的尺度投影到屏幕上。提供了一种变焦透镜，其从放大侧依次具有作为整体的具有负折射光焦度的第一透镜组，具有正的或负的折射光焦度的第二透镜组，具有正的或负的折射光焦度的第三透镜组作为整体的折射光焦度和具有正折射光焦度的第四透镜组，其中作为其整个透镜系统的可变光焦度被构造成使得第四透镜组在实现可变功率时被固定，并且使第一透镜组，第二透镜组和第三透镜组在光轴上移动。

3. 发明申请

US20080019021A1 Zoom lens and projector unit 有权
标题翻译：变焦镜头和投影机单元
公开(公告)号：US20080019021A1
公开(公告)日：2008-01-24
申请号：US11879692
申请日：2007-07-17
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： To provide a compact, high-performance zoom lens having a small lens aperture for enlarging an image from a light bulb such as a DMD for forming an image by changing a reflecting direction of light and projecting the image so enlarged on to a screen or the like, and the zoom lens includes, in order from a magnifying side, a first lens group having a negative refractive power as a whole and a second lens group having a positive refractive power as a whole, wherein changing the magnification of a whole lens system thereof is attained by configuring such that while a magnification varying operation is in effect, the first lens group and the second lens group are made to move on the optical axis.
摘要翻译：为了提供一种具有小的透镜孔径的小型高性能变焦透镜，用于通过改变光的反射方向并将如此放大的图像投影到屏幕上来放大来自诸如DMD的灯泡的图像以形成图像，并且变焦透镜从放大侧依次包括作为整体具有负折光力的第一透镜组和具有正折射光焦度的第二透镜组，其中改变整个透镜系统的放大率通过配置使得在变倍操作有效的同时，使第一透镜组和第二透镜组在光轴上移动。

4. 发明申请

US20060061880A1 Lens system utilizing light-transmitting ceramic and camera assembly using lens system utilizing light-transmitting ceramic 失效
标题翻译：利用透光陶瓷的透镜陶瓷和相机组件的透镜系统
公开(公告)号：US20060061880A1
公开(公告)日：2006-03-23
申请号：US11225800
申请日：2005-09-13
申请人： Etsuro Kawakami
发明人： Etsuro Kawakami
IPC分类号： G02B9/00
CPC分类号： G02B15/177 , G02B1/00
摘要： In a lens system in which a plurality of lenses are combined while the lenses are disposed in such a manner that their optical axes are aligned with each other, at least one ceramic lens is used which is produced using a light-transmitting ceramic as a lens material, and the ceramic lens is disposed in the vicinity of a position where chief rays of light of respective image points on an image plane overlap.
摘要翻译：在透镜被配置为使得它们的光轴彼此对准地配置多个透镜的透镜系统中，使用使用透光陶瓷作为透镜制造的至少一个陶瓷透镜材料，并且陶瓷透镜设置在图像上的各个图像点的主光线重叠的位置附近。

5. 发明授权

US07626768B2 Zoom lens and camera with zoom lens 失效
标题翻译：变焦镜头和变焦镜头相机
公开(公告)号：US07626768B2
公开(公告)日：2009-12-01
申请号：US11701899
申请日：2007-02-02
申请人： Etsuro Kawakami
发明人： Etsuro Kawakami
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： A zoom lens of variable power ratio of the order of 3 in which the whole of the zoom lens is made up of three lens elements groups and the power configuration of each of the groups has an arrangement of negative, positive, and negative. The zoom lens includes, sequentially from an object side thereof, a first lens elements group which has a negative refraction power as a whole, a second lens elements group which has a positive refraction power as a whole, and a third lens element group, which has a negative refraction power as a whole. A variable power is realized by shifting the positions of the first and second lens elements group in the direction of an optical axis thereof.
摘要翻译：变焦倍率为3的变焦透镜，其中整个变焦透镜由三个透镜元件组构成，并且每个组的功率配置具有负，正和负的布置。变焦透镜从物体侧顺序地包括整体具有负折射光焦度的第一透镜元件组，整体具有正折射光焦度的第二透镜元件组和第三透镜元件组，其中整体具有负折射力。通过使第一和第二透镜元件组在其光轴方向上的位置移动来实现可变功率。

6. 发明授权

US07394599B2 Zoom lens and projector with zoom lens 有权
标题翻译：变焦镜头和投影机与变焦镜头
公开(公告)号：US07394599B2
公开(公告)日：2008-07-01
申请号：US11796702
申请日：2007-04-27
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B15/14
CPC分类号： G02B15/173 , G02B15/177
摘要： A zoom lens includes a first lens group having positive or negative refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, and a fourth lens group having positive refractive power. A variable power is set such that the first and fourth lens group are left fixed, the second lens group is made to move from a magnifying side to a contracting side over a range from a wide angle end to an intermediate area and is made to move on an optical axis from the contracting side to the magnifying side over a range from the intermediate area to a telephoto end, and the third lens group is made to move on the optical axis from the contracting side to the magnifying side over a range from the wide angle end to the telephoto end.
摘要翻译：变焦透镜包括具有正或负屈光力的第一透镜组，具有负折光力的第二透镜组，具有正折光力的第三透镜组和具有正折光力的第四透镜组。可变功率被设定为使得第一和第四透镜组保持固定，使第二透镜组从广角端到中间区域的范围内从放大侧移动到收缩侧，并且使其移动在从中间区域到望远端的范围内的从收缩侧到放大侧的光轴上，并且使第三透镜组在从光纤轴的收缩侧到放大侧的范围内广角端到远摄端。

7. 发明申请

US20080030871A1 Zoom lens and projector employing zoom lens 有权
标题翻译：变焦镜头和投影机采用变焦镜头
公开(公告)号：US20080030871A1
公开(公告)日：2008-02-07
申请号：US11888024
申请日：2007-07-31
申请人： Yasuyuki Tejima , Etsuro Kawakami
发明人： Yasuyuki Tejima , Etsuro Kawakami
IPC分类号： G02B15/14
CPC分类号： G02B15/177 , G02B13/16
摘要： To provide a thin projector for projecting an image from a light bulb such as a DMD for forming an image by changing reflecting directions of light on to a screen or the like in an enlarged fashion and a compact zoom lens with high performance and which has a small lens aperture. There is provided a zoom lens made up of, in order from an enlarging size thereof, a first lens group having a negative refractive power as a whole, a second lens group having a positive refractive power as a whole, a third lens-group having a negative refractive power as a whole, and a fourth lens group having a positive refractive power as a whole, wherein the fourth lens group is fixed while the focal length is being changed, the first lens group and the second lens group are made to move on an optical axis in a direction from the enlarging side towards the reducing side over a range from a wide angle end to an intermediate range and are made to move on the optical axis in a direction from the reducing side towards the enlarging side over a range from the intermediate range to a telephoto end, and the third lens group is made to move on the optical axis in a direction from the reducing side to the enlarging side over a range from the wide angle end to the telephoto end, whereby the focal length of the whole lens system of the zoom lens is changed.
摘要翻译：为了提供一种薄投影仪，用于通过将放大的光的反射方向改变到屏幕等上以及具有高性能的紧凑型变焦透镜来投射来自诸如用于形成图像的DMD的灯泡的图像的图像，并且具有小透镜光圈。提供了一种变焦透镜，其放大倍数依次为具有负折射力的第一透镜组，整体上具有正折射光焦度的第二透镜组，具有第三透镜组的第三透镜组具有作为整体的负屈光力，以及整体具有正折射力的第四透镜组，其中第四透镜组在焦距变化时被固定，使第一透镜组和第二透镜组移动在从广角端到中间范围的范围内的从放大侧朝向还原侧的方向的光轴上，在从减速侧朝向放大侧的方向上在光轴上移动范围从中间范围到望远端，并且使第三透镜组在从广角端到望远端的范围内在从减速侧到扩大侧的方向上在光轴上移动，由此，改变变焦镜头整个镜头系统的焦距。

8. 发明申请

US20080024878A1 Zoom lens and projector using zoom lens 有权
标题翻译：变焦镜头和投影机使用变焦镜头
公开(公告)号：US20080024878A1
公开(公告)日：2008-01-31
申请号：US11881094
申请日：2007-07-25
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： To provide a high performance compact zoom lens with a small lens aperture which projects an image from a light bulb such as a DMD in which an image is formed by changing reflecting directions of light on to a screen or the like in an enlarged fashion, according to the invention, there is provided zoom lens comprising, in order from a magnifying side thereof, a first lens group having a negative refractive power as a whole, a second lens group having a positive or negative refractive power as a whole and a third lens group having a positive refractive power as a whole, wherein changing the magnification of the whole lens system thereof is attained by configuring such that the first lens group and the second lens group are made to move on an optical axis in such a manner as to move in a direction from a magnifying side to a contracting side over a range from a wide angle end to an intermediate area and to move in a direction from the contracting side to the magnifying side over a range from the intermediate area to a telephoto end, and the third lens group is made to move on the optical axis in such a manner as to move in a direction from the contracting side to the magnifying side over a range from the wide angle end to the telephoto end.
摘要翻译：为了提供一种具有小透镜孔径的高性能紧凑型变焦透镜，其通过以放大方式将光的反射方向改变为屏幕等而投影来自诸如其中形成图像的DMD的灯泡的图像，根据在本发明中，提供了一种变焦透镜，其从放大侧依次具有作为整体具有负折光力的第一透镜组，具有正的或负的折射光焦度的第二透镜组以及第三透镜整体具有正折射光焦度的组，其中通过使第一透镜组和第二透镜组在光轴上移动以使其移动而实现整个透镜系统的整体倍率的改变在从广角端到中间区域的范围内从放大侧到收缩侧的方向，并且在从收缩侧朝向放大侧的方向上移动一定范围从中间区域到望远端，并且使第三透镜组在光轴上移动，从而在从广角端到广角端的范围内在从收缩侧到放大侧的方向上移动长焦端

9. 发明申请

US20080024875A1 Zoom lens and projector using zoom lens 有权
标题翻译：变焦镜头和投影机使用变焦镜头
公开(公告)号：US20080024875A1
公开(公告)日：2008-01-31
申请号：US11799613
申请日：2007-05-02
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B15/14
CPC分类号： G02B15/177 , G02B15/173
摘要： A compact zoom lens which projects an image from a DMD on to a screen in an enlarged scale is provided.There is provided a zoom lens including, in order from a magnifying side, a first lens group having a positive or negative refractive power as a whole, a second lens group having a negative refractive power as a whole, a third lens group having a positive or negative refractive power as a whole, a fourth lens group having a positive refractive power as a whole and a fifth lens group having a positive refractive power as a whole, wherein a variable power as a whole lens system of the zoom lens is established by configuring such that the first lens group and the fifth lens group are left fixed, the second lens group, the third lens group and the fourth group are made to move on an optical axis.
摘要翻译：提供了将图像从DMD投影到屏幕上的小型变焦透镜。提供了一种变焦透镜，其从放大侧依次具有整体具有正或负折射光焦度的第一透镜组，具有整体具有负折射力的第二透镜组，具有正的折射光焦度的第三透镜组或负屈光力，作为整体具有正折射光焦度的第四透镜组和具有正折射光焦度的第五透镜组，其中作为变焦透镜的整个透镜系统的可变光束通过使得第一透镜组和第五透镜组保持固定，使得第二透镜组，第三透镜组和第四组在光轴上移动。

10. 发明授权

US07672065B2 Lens system and projector utilizing the same 有权
标题翻译：镜头系统和投影机使用它
公开(公告)号：US07672065B2
公开(公告)日：2010-03-02
申请号：US11952303
申请日：2007-12-07
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B13/02
CPC分类号： G02B13/16 , H04N5/7458
摘要： A high-performance lens system includes lens elements of small diameters for projecting enlarged images from light valves (mainly Digital Micromirror Devices (DMDs))for forming images by changing reflecting directions of light. The lens system includes, sequentially in order from a magnifying side, a first lens group which makes up a substantially afocal optical system as a whole and a second lens group having a positive refractive power as a whole. Depending on the application a third lens group made up of a single positive lens element is provided in the vicinity of the light valve on a contracting side of the second lens group.
摘要翻译：高性能透镜系统包括用于从光阀（主要是数字微镜器件（DMD））放大的图像的小直径的透镜元件，用于通过改变光的反射方向形成图像。透镜系统从放大侧依次包括构成基本上无焦的光学系统作为整体的第一透镜组和具有整个正屈光力的第二透镜组。根据应用，在第二透镜组的收缩侧的光阀附近设置由单个正透镜元件组成的第三透镜组。

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