公开(公告)号：US07133217B2

公开(公告)日：2006-11-07

申请号：US10235520

申请日：2002-09-04

申请人： Sawako Chatani ,  Toshihiro Sunaga

发明人： Sawako Chatani ,  Toshihiro Sunaga

IPC分类号： G02B17/00 ,  G02B27/02 ,  G03B21/28

CPC分类号： G03B21/56

摘要： An image-taking optical system according to the present invention for forming an image of a two-dimensional object on an image-taking surface comprises a plurality of reflecting surfaces which reflect light from the two-dimensional object sequentially and guides the light to the image-taking surface, and a reference axis passing through the center of the pupil of the image-taking system and the center of the optical image formed on the image-taking surface is inclined with respect to the normal line of the two-dimensional object.The present invention provides an image-taking optical system which achieves a reduction in size, ensures a ratio of an amount of peripheral light, allows correction of trapezoidal distortion of a formed image, and is suitable for oblique image-taking.

公开(公告)号：US06991338B2

公开(公告)日：2006-01-31

申请号：US10630407

申请日：2003-07-30

申请人： Toshihiro Sunaga ,  Katsumi Kurematsu ,  Takayuki Ishii ,  Yoshiaki Kurioka ,  Sawako Chatani

发明人： Toshihiro Sunaga ,  Katsumi Kurematsu ,  Takayuki Ishii ,  Yoshiaki Kurioka ,  Sawako Chatani

IPC分类号： G03B21/22 ,  G03B21/26 ,  G03B21/28 ,  G02B27/14 ,  G02B5/10

CPC分类号： G02B17/0852 ,  G02B17/0663 ,  G02B17/0848 ,  H04N5/74 ,  H04N5/7408 ,  H04N5/7416

摘要： A projection optical system having a plurality of reflecting surfaces is disclosed in which a sufficiently large angle is provided between an incident side reference axis and an emerging side reference axis while tilt angles of the respective reflecting surfaces can remain small. The projection optical system projects luminous flux from an image forming element which forms an original image onto a projection surface. The incident side reference axis and the emerging side reference axis of the projection optical system are oblique to each other. The projection optical system has a plurality of reflecting surfaces each having a curvature. The reflecting surfaces are arranged such that the reference axis has at least one intersection in the projection optical system.

摘要翻译： 公开了一种具有多个反射面的投影光学系统，其中在入射侧基准轴和出射侧基准轴之间设置足够大的角度，同时各反射面的倾斜角度保持较小。 投影光学系统将形成原始图像的图像形成元件的光通量投影到投影面上。 投影光学系统的入射侧基准轴和出射侧基准轴彼此倾斜。 投影光学系统具有各自具有曲率的多个反射面。 反射面被布置成使得参考轴在投影光学系统中具有至少一个交叉点。

公开(公告)号：US06984044B2

公开(公告)日：2006-01-10

申请号：US10630483

申请日：2003-07-30

申请人： Yoshiaki Kurioka ,  Katsumi Kurematsu ,  Takayuki Ishii ,  Toshihiro Sunaga ,  Sawako Chatani

发明人： Yoshiaki Kurioka ,  Katsumi Kurematsu ,  Takayuki Ishii ,  Toshihiro Sunaga ,  Sawako Chatani

IPC分类号： G03B21/28 ,  G03B21/22 ,  G03B21/26 ,  G03B5/10

CPC分类号： G02B17/0852 ,  G02B5/205 ,  G02B17/0832 ,  G02B17/0848

摘要： A projection optical system which can project a bright image with less distortion and a small projection distance without causing aberration or an increase in size of reflective surfaces is disclosed. The projection optical system projects luminous flux from an original image onto a projection surface which is oblique to a central principal ray which is a principal ray of luminous flux traveling from the center of the original image to the center of a projected image. The projection optical system comprises a refractive optical system which includes a plurality of refractive optical elements through which the luminous flux from the original image passes through, and a reflective optical system which includes a plurality of reflective surfaces each having an optical power and guides the luminous flux emerging from the refractive optical system to the projection surface.

摘要翻译： 公开了一种投影光学系统，其能够以较小的失真和较小的投影距离投影明亮的图像，而不引起像差或反射表面的尺寸的增加。 投影光学系统将来自原始图像的光通量投影到与作为从原始图像的中心传播到投影图像的中心的光束的主光线的中心主光线倾斜的投影表面上。 投影光学系统包括折射光学系统，其包括多个折射光学元件，来自原始图像的光束穿过该折射光学元件，以及反射光学系统，其包括多个反射表面，每个反射表面具有光学功率并引导发光 从折射光学系统到投影面的光通量。

公开(公告)号：US06951395B2

公开(公告)日：2005-10-04

申请号：US10630556

申请日：2003-07-30

申请人： Sawako Chatani ,  Katsumi Kurematsu ,  Takayuki Ishii ,  Toshihiro Sunaga ,  Yoshiaki Kurioka

发明人： Sawako Chatani ,  Katsumi Kurematsu ,  Takayuki Ishii ,  Toshihiro Sunaga ,  Yoshiaki Kurioka

IPC分类号： G02B13/18 ,  G02B17/06 ,  G02B17/08 ,  G02B27/18 ,  G03B21/00 ,  G03B21/14 ,  H04N5/74 ,  G03B21/28

CPC分类号： G02B17/0852 ,  G02B17/0663 ,  G02B17/0816 ,  G02B17/0848 ,  G03B21/005 ,  H04N5/74

摘要： A projection optical system which has a short projection distance and a compact structure, and allows oblique projection. The projection optical system projects luminous flux from an image forming element for forming an original image onto a projection surface which is oblique to a central principal ray which is a principal ray of luminous flux traveling from the center of the original image to the center of a finally formed image. The system includes a plurality of reflecting surfaces each having a curvature. In addition, the projection optical system satisfies a predetermined expression (1).

摘要翻译： 投影光学系统具有短的投影距离和紧凑的结构，并且允许倾斜投影。 投影光学系统将来自用于形成原始图像的图像形成元件的光通量投影到与从原始图像的中心向中心移动的光束的主光线的中心主光线倾斜的投影面上 终于形成了形象。 该系统包括多个具有曲率的反射表面。 另外，投影光学系统满足预定的表达式（1）。