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79 条记录 (耗时 0.034 秒)

    Display optical system and image projector
    61.
    发明授权
    Display optical system and image projector 有权
    显示光学系统和图像投影仪

    公开(公告)号：US07287861B2

    公开(公告)日：2007-10-30

    申请号：US11086967

    申请日：2005-03-22

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G03B21/00 ,  G03B21/20 ,  G03B21/26

    CPC分类号： G02B27/145 ,  G02B27/0025 ,  G02B27/1026 ,  G03B21/14 ,  G03B21/2066 ,  H04N9/3105 ,  H04N9/317

    摘要： A display optical system and an image projector incorporating the same. The display optical system includes a light source operable to emit light; a plurality of reflective light-modulating devices; a plurality of optical elements; a projection optical system including at least one refractive lens; and an optical curved-surface having a finite radius of curvature and interposed between the projection optical system and at least one of the plurality of reflective light-modulating devices, wherein the optical elements are arranged to guide light from the light source to the reflective light-modulating devices and to guide outgoing light from the reflective light-modulating devices to the projection optical system, and wherein the at least one refractive lens of the projection optical system projects incoming light to a predetermined plane.

    摘要翻译： 一种显示光学系统和包含该显示光学系统的图像投影仪。 显示光学系统包括可操作以发光的光源; 多个反射光调制装置; 多个光学元件; 投影光学系统，包括至少一个折射透镜; 以及具有有限曲率半径的光学弯曲表面，并且插入在所述投影光学系统和所述多个反射光调制装置中的至少一个之间，其中所述光学元件被布置成将来自所述光源的光引导到所述反射光 并且将来自反射光调制装置的出射光引导到投影光学系统，并且其中投影光学系统的至少一个折射透镜将入射光投射到预定平面。

    Display optical system and image projector
    62.
    发明申请
    Display optical system and image projector 有权
    显示光学系统和图像投影仪

    公开(公告)号：US20050213057A1

    公开(公告)日：2005-09-29

    申请号：US11086967

    申请日：2005-03-22

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G02B5/04 ,  G02B13/16 ,  G02B13/18 ,  G02B27/00 ,  G02B27/14 ,  G02F1/13 ,  G02F1/13357 ,  G03B21/00 ,  G03B21/14

    CPC分类号： G02B27/145 ,  G02B27/0025 ,  G02B27/1026 ,  G03B21/14 ,  G03B21/2066 ,  H04N9/3105 ,  H04N9/317

    摘要： A display optical system and an image projector incorporating the same. The display optical system includes a light source operable to emit light; a plurality of reflective light-modulating devices; a plurality of optical elements; a projection optical system including at least one refractive lens; and an optical curved-surface having a finite radius of curvature and interposed between the projection optical system and at least one of the plurality of reflective light-modulating devices, wherein the optical elements are arranged to guide light from the light source to the reflective light-modulating devices and to guide outgoing light from the reflective light-modulating devices to the projection optical system, and wherein the at least one refractive lens of the projection optical system projects incoming light to a predetermined plane.

    摘要翻译： 一种显示光学系统和包含该显示光学系统的图像投影仪。 显示光学系统包括可操作以发光的光源; 多个反射光调制装置; 多个光学元件; 投影光学系统，包括至少一个折射透镜; 以及具有有限曲率半径的光学弯曲表面，并且插入在所述投影光学系统和所述多个反射光调制装置中的至少一个之间，其中所述光学元件被布置成将来自所述光源的光引导到所述反射光 并且将来自反射光调制装置的出射光引导到投影光学系统，并且其中投影光学系统的至少一个折射透镜将入射光投射到预定平面。

    Rear focusing zoom lens
    63.
    发明授权
    Rear focusing zoom lens 失效

    公开(公告)号：US5847882A

    公开(公告)日：1998-12-08

    申请号：US485136

    申请日：1995-06-07

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G02B15/173 ,  G02B15/14

    CPC分类号： G02B15/173

    摘要： A zoom lens having a first lens unit remaining stationary and having positive refracting power, a second lens unit having negative refracting power, a third lens unit having positive refracting power, a fourth lens unit having negative refracting power and a fifth lens unit remaining stationary and having positive refracting power to perform zooming by moving at least the second lens unit and the fourth lens unit and to perform focusing an infinite object to a nearest object by moving the fourth lens unit toward the image surface.

    Compact zoom lens with positive power front lens group and negative power rear lens group
    67.
    发明授权
    Compact zoom lens with positive power front lens group and negative power rear lens group 失效
    具有正功率前镜头组和负功率后镜头组的紧凑型变焦镜头

    公开(公告)号：US5113287A

    公开(公告)日：1992-05-12

    申请号：US758284

    申请日：1991-08-28

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G02B15/173

    CPC分类号： G02B15/173

    摘要： A high-magnification zoom lens having a compact size has a front lens group of positive refractive power and a rear lens group of negative refractive power which groups are aligned in that order from the object side. The front lens group includes five lens elements and satisfies the following conditions.0.015

    摘要翻译： 具有紧凑尺寸的高倍率变焦透镜具有正折光力的前透镜组和负折射光焦度的后透镜组，该组从物体侧依次对准。 前透镜组包括五个透镜元件，满足以下条件。 0.015

    Objective of variable focal length
    70.
    发明授权
    Objective of variable focal length 失效
    可变焦距的目的

    公开(公告)号：US4907866A

    公开(公告)日：1990-03-13

    申请号：US847236

    申请日：1986-04-02

    申请人： Nozomu Kitagishi ,  Hiroki Nakayama ,  Shigeyuki Suda ,  Jun Hattori ,  Akihisa Horiuchi

    发明人： Nozomu Kitagishi ,  Hiroki Nakayama ,  Shigeyuki Suda ,  Jun Hattori ,  Akihisa Horiuchi

    IPC分类号： G02B15/177

    CPC分类号： G02B15/177

    摘要： An objective of variable focal length includes a plurality of lens units of which the first, counting from front, is of negative power and the second is of positive power. At least the first and second lens units are moved with variation of the air separation therebetween to vary the focal length of the entire system. The objective is characterized in that at least one of the lens units is included with at least one refractive index distribution type lens arranged on the common optical axis of the other lenses.

    摘要翻译： 可变焦距的目的包括多个透镜单元，其中第一个从前面计数是负功率的，第二个具有正的功率。 至少第一和第二透镜单元随着它们之间的空气间隔的变化而移动，以改变整个系统的焦距。 其目的在于，透镜单元中的至少一个包括配置在其它透镜的公共光轴上的至少一个折射率分布型透镜。