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1. 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。

2. 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。

3. 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。

4. 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。

5. 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

6. 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。

7. 发明授权

US07619833B2 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：US07619833B2
公开(公告)日：2009-11-17
申请号：US12001873
申请日：2007-12-13
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B9/04
CPC分类号： G02B13/04 , G02B13/22
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。

8. 发明授权

US07495841B2 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：US07495841B2
公开(公告)日：2009-02-24
申请号：US11880662
申请日：2007-07-24
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： To provide a high performance compact zoom lens with a small lens aperture which projects an image from a light valve such as a DMD (Digital Micromirror Device) 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 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 and a fourth 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 is left fixed while a magnification varying operation is effect, the second lens group, the third lens group and the fourth lens group are made to move on an optical axis.
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，其将来自诸如DMD（数字微镜器件）的光阀的图像投射到其中通过将光的反射方向改变到屏幕等上而形成图像的图像根据本发明的放大方式，提供了一种变焦透镜，包括从其放大侧依次具有作为整体具有正的或负的折射光焦度的第一透镜组，具有负折光力的第二透镜组作为整体上具有整体的正或负折射光焦度的第三透镜组以及整个具有正折光力的第四透镜组，其中通过将第一透镜组在放大倍率变化操作效果时保持固定，使第二透镜组，第三透镜组和第四透镜组在光轴上移动。

9. 发明申请

US20080130142A1 Lens system and projector using the same 有权
标题翻译：镜头系统和投影机使用相同
公开(公告)号：US20080130142A1
公开(公告)日：2008-06-05
申请号：US11982814
申请日：2007-11-05
申请人： Etsuro Kawakami , Yasuyuki Tejima
发明人： Etsuro Kawakami , Yasuyuki Tejima
IPC分类号： G02B9/12 , G02B9/04
CPC分类号： G02B13/04
摘要： A high-performance lens system including lens elements of small diameters for projecting on to a screen or the like in an enlarged fashion images from light valves such as mainly DMDs (Digital Micromirror Devices) for forming images by changing reflecting directions of light.A lens system is provided which includes, sequentially in that order from a magnifying side, a first lens group which makes up a substantially a focal optical system as a whole and a second lens group having a positive refractive power as a whole, and depending upon applications, a third lens group made up of a single positive lens element is provided in the vicinity of a light valve such as a DMD on a contracting side of the second lens group.
摘要翻译：一种高性能透镜系统，包括用于从诸如主要用于通过改变光的反射方向形成图像的DMD（数字微镜装置）的光阀的放大方式从屏幕等投影的小直径的透镜元件。提供了一种透镜系统，其从放大侧依次包括构成基本上聚焦光学系统的第一透镜组和整体具有正折射光焦度的第二透镜组，并且根据在第二透镜组的收缩侧的DMD等光阀附近设置由单个正透镜元件构成的第三透镜组。

10. 发明申请

US20080024876A1 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：US20080024876A1
公开(公告)日：2008-01-31
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 bulb 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小型变焦透镜，来自诸如DMD的灯泡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。

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