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1. 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。

2. 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。

3. 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

4. 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，

5. 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。

6. 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，

7. 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。

8. 发明授权

US5709445A Oblique projection optical system 失效
标题翻译：倾斜投影光学系统
公开(公告)号：US5709445A
公开(公告)日：1998-01-20
申请号：US675481
申请日：1996-07-03
申请人： Katsuhiro Takamoto
发明人： Katsuhiro Takamoto
IPC分类号： G02B13/24 , G02B13/16 , G02B27/00 , G02B27/18 , G03B21/10 , H04N5/74 , H04N17/00 , G03B21/14
CPC分类号： G03B21/10 , G02B27/0025
摘要： An optical system projects an enlargement of an image of an object surface on a screen inclined relative to the object surface. The optical system includes an afocal first lens unit including a diaphragm and at least a second lens unit. The optical axis of the afocal system is not collinear with a normal line from the object surface, i.e., the afocal system is eccentric to the object surface. The second lens unit is eccentric relative to the afocal lens unit.
摘要翻译：光学系统在相对于物体表面倾斜的屏幕上投射物体表面的图像的放大。光学系统包括具有光阑和至少第二透镜单元的无焦第一透镜单元。无焦点系统的光轴与物体表面的法线不共线，即无焦系统偏心于物体表面。第二透镜单元相对于无焦透镜单元是偏心的。

9. 发明授权

US06583940B2 Projection system 有权
公开(公告)号：US06583940B2
公开(公告)日：2003-06-24
申请号：US09885586
申请日：2001-06-20
申请人： Jun Nishikawa , Shigeru Sawamura , Katsuhiro Takamoto
发明人： Jun Nishikawa , Shigeru Sawamura , Katsuhiro Takamoto
IPC分类号： G02B900
CPC分类号： H04N5/7458 , G02B13/16 , G02B15/14
摘要： A projection system that is capable of providing a high-performance projection system and producing a high contrast projection image by using an optical modulation element, which can be positioned a predetermined distance away from an illumination optical system and a projection optical system. The optical modulation element is capable of modulating light received from the illumination optical system and projecting the modulated light to a projection optical system in the direction of a projection surface.

10. 发明授权

US06382799B1 Projection optical apparatus 有权
标题翻译：投影光学仪器
公开(公告)号：US06382799B1
公开(公告)日：2002-05-07
申请号：US09621157
申请日：2000-07-21
申请人： Jun Nishikawa , Shigeru Sawamura , Katsuhiro Takamoto
发明人： Jun Nishikawa , Shigeru Sawamura , Katsuhiro Takamoto
IPC分类号： G03B2114
CPC分类号： G03B21/008 , G03B21/142 , G03B21/2066
摘要： A projection optical apparatus has a light source for emitting light, an illumination optical system for emitting as illumination light the light radiated from the light source, a Digital Micromirror Device™, having a plurality of micromirrors, for separating the illumination light into signal light and unnecessary light by varying, in accordance with a signal, the angles at which the individual micromirrors reflect the illumination light shone thereon, a total internal reflection prism composed of a first prism for totally reflecting and thereby directing the illumination light exiting from the illumination optical system to the Digital Micromirror Device™ and a second prism for transmitting the signal light reflected from the Digital Micromirror Device™, and a projection optical system for projecting the signal light transmitted through the second prism onto a projection surface. Here, the f/number Fa of the illumination optical system on the Digital Micromirror Device™ side thereof, the distance xa from the Digital Micromirror Device™ to the Digital Micromirror Device™ side pupil of the illumination optical system, the distance L from the optical axis position of the Digital Micromirror Device™ to the most off-axial position thereof, and the rotation &thgr;D angle of the micromirrors constituting the Digital Micromirror Device™ fulfill the following condition, assuming that Fa falls within a range 1/{2 sin(0.85 &thgr;D)}≦Fa≦1/{2 sin(0.3 &thgr;D)}: L/[tan{&thgr;D−sin−1(1/(2·Fa))}]≦xa≦L/tan(&thgr;D−0.87 &thgr;D)
摘要翻译：投影光学装置具有用于发光的光源，用于从光源照射光的照明光学系统，具有多个微镜的数字微镜装置（TM），用于将照明光分离成信号通过根据信号改变各个微镜反射照明光的角度，由第一棱镜组成的全内反射棱镜，用于全反射，从而引导从照明出射的照明光，数字微镜器件TM的光学系统和用于传输从数字微镜器件TM反射的信号光的第二棱镜，以及用于将透过第二棱镜的信号光投影到投影表面上的投影光学系统。这里，数字微镜装置（TM）侧的照明光学系统的f /数值Fa，照明光学系统的数字微镜装置（TM）到数字微镜装置（TM）侧光瞳的距离xa，从数字微镜装置（TM）的光轴位置到最离轴位置的距离L以及构成数字微镜装置（TM）的微反射镜的旋转角度达到以下条件，假设Fa下降在1 / {2sin（0.85θD）}的范围内<= Fa <= 1 / {2sin（0.3θD）}：

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