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    • 22. 发明授权
    • Image-forming optical system
    • 成像光学系统
    • US06900950B2
    • 2005-05-31
    • US10691664
    • 2003-10-24
    • Tetsuo Nagata
    • Tetsuo Nagata
    • G03B13/06G02B5/04G02B13/00G02B13/18G02B17/08G02B23/26G02B25/00G03B17/02G03B17/17G03B19/02H04N5/225G02B3/02G02B9/04G02B17/00
    • G02B17/086G02B13/0015G02B13/005G02B13/006G02B13/0065G02B13/007G02B17/0832G02B17/0848
    • A high-performance and low-cost image-forming optical system has a reduced number of constituent optical elements and is made extremely thin, particularly in a direction perpendicular to an image pickup device, by folding an optical path using only three reflecting surfaces. The image-forming optical system has a front unit including a first prism 10, an aperture stop 2, and a rear unit including a second prism 20. The first prism 10 has a first transmitting surface 11, a first reflecting surface 12, and a second transmitting surface 13. The second prism 20 has a first transmitting surface 21, a first reflecting surface 22, a second reflecting surface 23, and a second transmitting surface 24. An optical path incident on the first reflecting surface 22 and an optical path exiting from the second reflecting surface 23 intersect each other. The first reflecting surface 12 of the first prism 10 and the first and second reflecting surfaces 22 and 23 of the second prism 20 have a curved surface configuration that gives a power to a light beam. The curved surface configuration is a rotationally asymmetric surface configuration that corrects aberrations due to decentration.
    • 高性能和低成本的图像形成光学系统通过仅使用三个反射表面折叠光路,具有减少数量的组成光学元件,并且特别是在垂直于图像拾取装置的方向上变得非常薄。 图像形成光学系统具有包括第一棱镜10,孔径光阑2和包括第二棱镜20的后单元的前单元。第一棱镜10具有第一透光表面11,第一反射表面12和 第二透镜表面13.第二棱镜20具有第一透光表面21,第一反射表面22,第二反射表面23和第二透光表面24.入射在第一反射表面22上的光路和离开 从第二反射面23彼此交叉。 第一棱镜10的第一反射表面12和第二棱镜20的第一和第二反射表面22和23具有赋予光束功率的曲面构造。 弯曲表面构型是旋转非对称的表面构造,其校正由于偏心造成的像差。
    • 24. 发明授权
    • Image-forming optical system
    • 成像光学系统
    • US06876390B1
    • 2005-04-05
    • US09541090
    • 2000-03-31
    • Tetsuo Nagata
    • Tetsuo Nagata
    • G02B17/08H04N5/225
    • G02B17/086G02B17/0848H04N5/2254H04N2005/2255
    • A high-performance and low-cost image-forming optical system with a reduced number of constituent optical elements that is made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. The image-forming optical system has a first prism and a second prism between a stop and an image plane. The first prism includes an entrance surface, a first reflecting surface, a second reflecting surface, and an exit surface. The first reflecting surface and the exit surface are the identical surface. The second prism includes an entrance surface, a first reflecting surface, a second reflecting surface, and an exit surface. In the second prism, the second reflecting surface and the entrance surface are the identical surface.
    • 具有减少数量的构成光学元件的高性能和低成本的图像形成光学系统,其通过使用设置成使反射次数最小化的反射表面折叠光路而变得紧凑和薄。 图像形成光学系统具有第一棱镜和在停止和图像平面之间的第二棱镜。 第一棱镜包括入射面,第一反射面,第二反射面和出射面。 第一反射面和出射面是相同的表面。 第二棱镜包括入射面,第一反射面,第二反射面和出射面。 在第二棱镜中,第二反射面和入射面是相同的表面。
    • 26. 发明授权
    • Image display apparatus having three-dimensionally decentered optical path
    • 具有三维偏心光路的图像显示装置
    • US06501602B2
    • 2002-12-31
    • US09921426
    • 2001-08-03
    • Takayoshi ToginoTetsuo Nagata
    • Takayoshi ToginoTetsuo Nagata
    • G02B2714
    • G02B17/086G02B17/0848G02B27/0172G02B2027/0132G02B2027/0136G02B2027/0178
    • An image display apparatus allows an image from a single image display device to be led to two eyes without using a half-mirror, thereby allowing observation of a bright image, and facilitates correction of various aberrations. A viewing optical system includes a left ocular part, a right ocular part, and an optical path distributing part for leading a light beam from a single image display device to the left and right ocular parts. The left and right ocular parts each have at least two reflecting surfaces. The optical path distributing part has at least one pair of reflecting surfaces for left and right optical paths. These reflecting surfaces are formed from rotationally asymmetric curved reflecting surfaces having the function of correcting decentration aberrations. The left and right optical paths of the viewing optical system are formed by optical surfaces arranged so that the left and right optical paths are not in plane symmetry with each other but in 180-degree rotational symmetry with respect to only a normal line passing through the center of the image display device.
    • 图像显示装置允许来自单个图像显示装置的图像被引导到两只眼睛而不使用半反射镜,从而允许观察明亮的图像,并且便于校正各种像差。 观察光学系统包括左眼部分,右眼部分和用于将来自单个图像显示装置的光束引导到左眼和右眼部分的光路分布部分。 左眼和右眼各自具有至少两个反射表面。 光路分配部具有用于左右光路的至少一对反射面。 这些反射表面由具有校正偏心像差功能的旋转非对称弯曲反射表面形成。 观察光学系统的左右光路由光学表面形成,光学表面布置成使得左和右光学路径彼此不平面对称,但是仅相对于仅穿过通过该光学系统的法线而呈180度旋转对称 图像显示设备的中心。
    • 27. 发明授权
    • Image display apparatus having three-dimensionally decentered optical path
    • 具有三维偏心光路的图像显示装置
    • US06464361B2
    • 2002-10-15
    • US09969889
    • 2001-10-04
    • Takayoshi ToginoTetsuo Nagata
    • Takayoshi ToginoTetsuo Nagata
    • G03B2114
    • G02B27/0172G02B2027/0132G02B2027/0136G02B2027/0178
    • The present invention relates to an image display apparatus in which an image from a single image display device is led to two eyes without using a half-mirror, thereby allowing observation of a bright image and facilitating correction of various aberrations. A viewing optical system includes a left ocular part 10L, a right ocular part 10R, and an optical path distributing part 20 for leading a light beam from a single image display device 3 to the left and right ocular parts 10L and 10R. The left and right ocular parts each have at least two reflecting surfaces 12R(L) and 13R(L). The planes of decentered optical paths of the axial principal rays in the left and right ocular parts are arranged to be approximately parallel to each other. The optical path distributing part 20 has optical surfaces 21L to 24L, 21R to 24R and 25 arranged in bilaterally rotational symmetry to form left and right optical paths that are not in plane symmetry with each other but in 180-degree rotational symmetry with respect to only a normal line passing through the center of the image display device 3. The optical path distributing part has at least two pairs of reflecting surfaces 22L(R) to 24L(R) as the optical surfaces for the left and right optical paths.
    • 本发明涉及一种图像显示装置,其中来自单个图像显示装置的图像被引导到两只眼睛而不使用半反射镜,从而允许观察明亮的图像并促进各种像差的校正。 观察光学系统包括左眼部分10L,右眼部分10R和用于将来自单个图像显示装置3的光束引导到左眼和右眼部分10L和10R的光路分布部分20。 左右眼部各自具有至少两个反射面12R(L)和13R(L)。 在左右眼部分中的轴向主光线的偏心光路的平面布置成彼此大致平行。 光路分配部20具有以双向旋转对称配置的光学面21L〜24L,21R〜24R,25,形成彼此不平面对称但相对于仅仅180度旋转对称的左右光路 通过图像显示装置3的中心的法线。光路分配部具有作为左右光路的光学面的至少两对反射面22L(R)〜24L(R)。
    • 30. 发明授权
    • Zoom optical system and imaging apparatus using the same
    • 变焦光学系统及使用其的摄像装置
    • US06859332B2
    • 2005-02-22
    • US10643958
    • 2003-08-20
    • Tetsuo NagataTetsuhide Takeyama
    • Tetsuo NagataTetsuhide Takeyama
    • G02B5/10G02B15/16G02B15/177H04N5/225H04N5/232G02B15/14G02B5/08G02B17/00
    • G02B15/177
    • A zoom optical system includes a deformable element having a focusing function and two lens groups movable in a magnification change and having a magnification varying function or a compensating function for compensating for a shift of an image surface. Alternatively, a zoom optical system includes, in order from the object side, a first group having a negative power and being fixed in a magnification change, a second group having a positive power and being movable in a magnification change, and a third group movable in a magnification change. The first group has a deformable element having a focusing function. An imaging apparatus is provided with either zoom optical system. Whereby, a high-performance zoom optical system with small fluctuation of aberrations in spite of use of a deformable element and a photographing apparatus using the same zoom optical system are provided.
    • 变焦光学系统包括具有聚焦功能的可变形元件和可以放大倍数变化并具有放大倍数变化功能的两个透镜组或用于补偿图像表面偏移的补偿功能。 或者,变焦光学系统从物体侧依次包括具有负功率并以倍率变化固定的第一组,具有正功率并且可以在倍率变化中移动的第二组,以及可移动的第三组 在放大变化。 第一组具有具有聚焦功能的可变形元件。 成像装置具有变焦光学系统。 因此,提供尽管使用可变形元件的像差波动小的高性能变焦光学系统和使用相同的变焦光学系统的摄影装置。