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1. 发明授权

US5359457A Wide-angle zoom lens system 失效
标题翻译：广角变焦镜头系统
公开(公告)号：US5359457A
公开(公告)日：1994-10-25
申请号：US947788
申请日：1992-09-18
申请人： Manami Saka , Katsuhiro Takamoto
发明人： Manami Saka , Katsuhiro Takamoto
IPC分类号： G02B15/173 , G02B15/14
CPC分类号： G02B15/173
摘要： A wide-angle zoom lens system comprises, from the object side to the image side, a first positive lens unit being stationary on an optical axis during a zooming operation, a second negative lens unit shifting along the optical axis during the zooming operation, a third positive lens unit being stationary on the optical axis during the zooming operation, and a fourth positive lens unit shifting along the optical axis during the zooming operation, wherein the refractive power of the first and second lens units fulfills the predetermined conditions.
摘要翻译：广角变焦透镜系统包括从物体侧到像侧，在变焦操作期间在光轴上固定的第一正透镜单元，在变焦操作期间沿着光轴移动的第二负透镜单元，第三正透镜单元在变焦操作期间在光轴上是静止的，以及在变焦操作期间沿着光轴移动的第四正透镜单元，其中第一和第二透镜单元的屈光力达到预定条件。

2. 发明授权

US5543970A Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US5543970A
公开(公告)日：1996-08-06
申请号：US197006
申请日：1994-02-15
申请人： Kazuyoshi Hata , Yukio Maekawa , Katsuhiro Takamoto , Manami Saka
发明人： Kazuyoshi Hata , Yukio Maekawa , Katsuhiro Takamoto , Manami Saka
IPC分类号： G02B15/173 , G02B15/14 , G02B13/18
CPC分类号： G02B15/173
摘要： A zoom lens system according to the present invention comprises, from the object side to the image side, a first lens unit with a positive refractive power including a negative high dispersion lens element and a positive lens element; a second lens unit with a negative refractive power consisting of two or three lens elements including a positive high dispersion lens element and a negative lens element, and having at least one aspherical surface; and a third lens unit with a positive refractive power consisting of five or less lens elements including a negative high dispersion lens element and one or two positive lens elements located on the object side of the negative high dispersion lens element, and having at least one aspherical surface. With the lens arrangement, a compact high-zoom-ratio zoom lens system having a high aberration correction performance is realized.
摘要翻译：根据本发明的变焦透镜系统包括从物体侧到像侧，具有包括负高分散透镜元件和正透镜元件的正折光力的第一透镜单元; 具有负折射力的第二透镜单元，由具有正高分散透镜元件和负透镜元件的两个或三个透镜元件组成，并具有至少一个非球面; 以及具有正折射光焦度的第三透镜单元，其由五个或更少的透镜元件组成，所述透镜元件包括负高分散透镜元件和位于负高分散透镜元件的物体侧上的一个或两个正透镜元件，并且具有至少一个非球面表面。利用透镜布置，实现了具有高像差校正性能的紧凑型高变焦比变焦透镜系统。

3. 发明授权

US5268793A Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US5268793A
公开(公告)日：1993-12-07
申请号：US10582
申请日：1993-01-28
申请人： Manami Saka , Katsuhiro Takamoto
发明人： Manami Saka , Katsuhiro Takamoto
IPC分类号： G02B13/18 , G02B15/16 , G02B15/173 , G02B15/14
CPC分类号： G02B15/173
摘要： A variable lens system has three lens unit whose refractive powers are positive, negative and positive from an object side to the image side. Each lens unit consists of at least two lens elements. The central lens unit and the image side lens unit are shifted along an optical axis during a zooming operation. The lens system fulfills the conditions: ##EQU1## wherein fS, Z, and Y' represent the shortest focal length, a zoom ratio and an image height, respectively, of the lens system. .phi.1 and .phi.2 represent refractive powers of the object side and central lens units.
摘要翻译：可变透镜系统具有三个透镜单元，其折射力从物体侧到像侧为正，负和正。每个透镜单元由至少两个透镜元件组成。在变焦操作期间，中心透镜单元和图像侧透镜单元沿光轴移动。透镜系统满足以下条件：0.10 其中fS，Z和Y'表示最短焦距，a 分别为透镜系统的变焦比和图像高度。 phi 1和phi 2表示物体侧和中心透镜单元的折射力。

4. 发明授权

US08699139B2 Variable-focal-length projection lens system and projection apparatus 有权
标题翻译：可变焦距投影透镜系统和投影仪
公开(公告)号：US08699139B2
公开(公告)日：2014-04-15
申请号：US13483987
申请日：2012-05-30
申请人： Katsuhiro Takamoto , Kazuhiko Inoue , Sadanobu Imamura , Kohei Wataru
发明人： Katsuhiro Takamoto , Kazuhiko Inoue , Sadanobu Imamura , Kohei Wataru
IPC分类号： G02B9/00 , G02B15/14 , G02B13/16
CPC分类号： G02B13/16 , G02B15/14
摘要： A variable-focal-length lens system for projection which achieves focusing by movement of the entire system has a second to a fourth lens group as focal-length-varying lens groups and a first lens group as a distance-compensation lens group. The second to fourth lens groups individually move in the optical axis direction to vary the group-to-group distances so as to vary the focal length of the entire system. During focusing, the first lens group moves in the optical axis direction such that, as the projection distance varies from a remote distance to a close distance, curvature of field varies to the under side.
摘要翻译：通过整个系统的移动实现聚焦的可变焦距透镜系统具有作为焦距变化透镜组的第二至第四透镜组和作为距离补偿透镜组的第一透镜组。第二至第四透镜组在光轴方向上分别移动以改变组与组的距离，从而改变整个系统的焦距。在聚焦期间，第一透镜组沿光轴方向移动，使得当投射距离从远距离变化到近距离时，曲率变化到下侧。

5. 发明授权

US5914820A Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US5914820A
公开(公告)日：1999-06-22
申请号：US961106
申请日：1997-10-30
申请人： Shunta Takimoto , Katsuhiro Takamoto
发明人： Shunta Takimoto , Katsuhiro Takamoto
IPC分类号： G02B15/177 , G02B15/14
CPC分类号： G02B15/177
摘要： A Zoom lens system, from the enlargement side, has the first to fourth lens units having the negative, positive, negative, positive optical power, respectively. The third lens unit has a meniscus lens having a convex surface on the enlargement side. The fourth lens unit has two positive lenses. During zooming from the shortest focal length condition to the longest focal length condition, the second and third lens units move along the optical axis so that a distance between the second and third lens units increases and a distance between the third and fourth lens units decreases. The zoom lens system fulfills the following conditions:0.30
摘要翻译：来自放大侧的变焦透镜系统具有分别具有负，正，负，正光焦度的第一至第四透镜单元。第三透镜单元具有在放大侧具有凸面的弯月形透镜。第四透镜单元具有两个正透镜。在从最短焦距条件到最长焦距条件的变焦期间，第二和第三透镜单元沿着光轴移动，使得第二和第三透镜单元之间的距离增加，并且第三和第四透镜单元之间的距离减小。变焦镜头系统满足以下条件：0.30 <| PHI 3 | xfs <0.903

6. 发明授权

US08270074B2 Magnified-projection optical system and digital type planetarium device 有权
标题翻译：放大投影光学系统和数字式天文馆装置
公开(公告)号：US08270074B2
公开(公告)日：2012-09-18
申请号：US12919080
申请日：2009-02-20
申请人： Mitsuaki Shimo , Katsuhiro Takamoto
发明人： Mitsuaki Shimo , Katsuhiro Takamoto
IPC分类号： G02B23/24
CPC分类号： G02B13/22 , G02B13/06 , G09B27/00
摘要： Provided is a magnified-projection optical system, which can retain a considerably long back focus although a focal length is short and which has a small chromatic aberration. The optical system comprises a projecting optical system, a relay optical system and a display element, which are sequentially arrayed from a screen side along the optical axis. The projecting optical system enlarges and projects the image, which has been linearly focused by the relay optical system, on the screen, and includes a negative group and a positive group arrayed sequentially from the screen side and having a negative optical power and a positive optical power, respectively. The optical system satisfies the following conditional relations of |Fb/F|>10 and 0.5
摘要翻译：提供了一种放大投影光学系统，其可以保持相当长的后焦距，尽管焦距短并且具有小的色差。光学系统包括投影光学系统，中继光学系统和显示元件，它们沿着光轴从屏幕侧依次排列。投影光学系统将由中继光学系统线性聚焦的图像放大并投射到屏幕上，并且包括从屏幕侧依次排列的负组和正组，并具有负光焦度和正光学电力。光学系统满足| Fb / F |> 10和0.5 <| F / Fp | <2.0的以下条件关系，其中Fb：包括投影光学系统和中继光学系统的整个光学系统的后焦点，F ：整个光学系统的焦距，FP：投影光学系统的焦距，

7. 发明授权

US5683161A Projecting optical device 失效
标题翻译：投射光学装置
公开(公告)号：US5683161A
公开(公告)日：1997-11-04
申请号：US653747
申请日：1996-05-23
申请人： Takatoshi Ishikawa , Soh Ohzawa , Katsuhiro Takamoto
发明人： Takatoshi Ishikawa , Soh Ohzawa , Katsuhiro Takamoto
IPC分类号： G02F1/13 , G03B21/00 , G03B21/14
CPC分类号： G03B21/147 , G03B21/006
摘要： A projecting optical device which simultaneously projects one object onto two or more different screens has a first screen, a second screen, a first projecting optical system which projects the object onto the first screen, and a second projecting optical system which projects the object onto the second screen and does not share an optical element with the first projecting optical system. A first base line connecting the center of the object to the center of the image projected on the first screen by the first optical system and a second base line connecting the center of the object to the center of the image projected on the second screen by the second optical system are not parallel to each other.
摘要翻译：同时将一个物体投影到两个或更多个不同屏幕上的投影光学装置具有第一屏幕，第二屏幕，将物体投影到第一屏幕上的第一投影光学系统和将物体投影到第二屏幕上的第二投影光学系统并且不与第一投影光学系统共享光学元件。第一基线，通过第一光学系统将物体的中心与投影在第一屏幕上的图像的中心连接，第二基线将物体的中心与投影在第二屏幕上的图像的中心连接第二光学系统彼此不平行。

8. 发明申请

US20110002034A1 MAGNIFIED-PROJECTION OPTICAL SYSTEM AND DIGITAL TYPE PLANETARIUM DEVICE 有权
标题翻译：放大投影光学系统和数字型平面设备
公开(公告)号：US20110002034A1
公开(公告)日：2011-01-06
申请号：US12919080
申请日：2009-02-20
申请人： Mitsuaki Shimo , Katsuhiro Takamoto
发明人： Mitsuaki Shimo , Katsuhiro Takamoto
IPC分类号： G02B27/18
CPC分类号： G02B13/22 , G02B13/06 , G09B27/00
摘要： Provided is a magnified-projection optical system, which can retain a considerably long back focus although a focal length is short and which has a small chromatic aberration. The optical system comprises a projecting optical system, a relay optical system and a display element, which are sequentially arrayed from a screen side along the optical axis. The projecting optical system enlarges and projects the image, which has been linearly focused by the relay optical system, on the screen, and includes a negative group and a positive group arrayed sequentially from the screen side and having a negative optical power and a positive optical power, respectively. The optical system satisfies the following conditional relations of |Fb/F|>10 and 0.5
摘要翻译：提供了一种放大投影光学系统，其可以保持相当长的后焦距，尽管焦距短并且具有小的色差。光学系统包括投影光学系统，中继光学系统和显示元件，它们沿着光轴从屏幕侧依次排列。投影光学系统将由中继光学系统线性聚焦的图像放大并投射到屏幕上，并且包括从屏幕侧依次排列的负组和正组，并具有负光焦度和正光学电力。光学系统满足| Fb / F |> 10和0.5 <| F / Fp | <2.0的以下条件关系，其中Fb：包括投影光学系统和中继光学系统的整个光学系统的后焦点，F ：整个光学系统的焦距，FP：投影光学系统的焦距，

9. 发明授权

US6028715A Variable magnification optical system 失效
标题翻译：变倍光学系统
公开(公告)号：US6028715A
公开(公告)日：2000-02-22
申请号：US978239
申请日：1997-11-25
申请人： Katsuhiro Takamoto , Masakuni Tai
发明人： Katsuhiro Takamoto , Masakuni Tai
IPC分类号： G02B13/18 , G02B15/167 , G02B15/17 , G02B15/14
CPC分类号： G02B15/17
摘要： A variable magnification optical system for projecting images from a small-sized, high-resolution display device consists of, from the projection side, a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a negative optical power, and a fourth lens unit having a positive optical power and kept in a fixed position during magnification adjustment. The optical system achieves magnification adjustment by moving at least the second and third lens units along the optical axis, and has at least one negative lens element in the second lens unit, at least one negative lens element in the third lens unit, and at least one positive lens element in the fourth lens unit made of lens materials having predetermined anomalous dispersions and predetermined Abbe numbers.
摘要翻译：用于从小尺寸的高分辨率显示装置投影图像的可变放大倍率光学系统包括从投影侧具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，第三透镜具有负光焦度的单元和具有正光焦度并在放大调节期间保持在固定位置的第四透镜单元。光学系统通过沿着光轴至少移动第二透镜单元和第三透镜单元而实现放大倍数调整，并且在第二透镜单元中具有至少一个负透镜元件，第三透镜单元中的至少一个负透镜元件，并且至少第四透镜单元中的一个正透镜元件由具有预定异常色散和预定阿贝数的透镜材料制成。

10. 发明授权

US5947576A Oblique projection optical apparatus 失效
标题翻译：倾斜投影光学仪器
公开(公告)号：US5947576A
公开(公告)日：1999-09-07
申请号：US943720
申请日：1997-10-03
申请人： Akira Sato , Katsuhiro Takamoto
发明人： Akira Sato , Katsuhiro Takamoto
IPC分类号： G02B13/24 , G02B27/00 , G03B21/10 , G03B21/132 , G03B21/14
CPC分类号： G02B13/24 , G02B27/0025 , G03B21/10 , G03B21/132
摘要： A projection optical apparatus has a projection optical system for projecting from a primary image an enlarged or reduced secondary image. A line connecting a center of an aperture diaphragm of the projection optical system to a center of an enlargement-side image plane forms a predetermined angle with respect to a normal to the enlargement-side image plane. The enlargement-side image plane and a reduction-side image plane are approximately parallel to each other. The projection optical system provides, on its enlargement side, curvature of field that is convex toward the projection optical system.
摘要翻译：投影光学装置具有用于从原始图像突出放大或缩小的二次图像的投影光学系统。将投影光学系统的孔径光阑的中心连接到放大侧图像平面的中心的线相对于放大侧图像平面的法线形成预定角度。放大侧图像平面和缩小侧图像平面彼此近似平行。投影光学系统在其放大侧上提供朝向投影光学系统凸出的曲率。

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