Zoom lens having a long back focal length
    1.
    发明授权
    Zoom lens having a long back focal length 失效
    变焦镜头具有较长的后焦距

    公开(公告)号:US5331462A

    公开(公告)日:1994-07-19

    申请号:US788285

    申请日:1991-11-05

    申请人: Koutaro Yano

    发明人: Koutaro Yano

    CPC分类号: G02B15/177

    摘要: In a retro-focus type lens divided into three lens units by the widest air spacing and the next widest air spacing, a first lens unit is disposed on a long conjugate side and has negative refractive power, and includes a negative lens and a lens provided with an aspherical surface, a second lens unit is disposed subsequently to the first lens unit and provided with a positive lens block, and a third lens unit is disposed subsequently to the second lens unit and has positive refractive power, and includes a negative lens and a positive lens.

    摘要翻译: 在通过最宽的空气间隔和下一个最宽的空气间隔分为三个透镜单元的复焦型透镜中,第一透镜单元设置在长的共轭侧上并且具有负折光力,并且包括负透镜和设置的透镜 具有非球面,第二透镜单元设置在第一透镜单元的后面并且设置有正透镜块,并且第三透镜单元设置在第二透镜单元的后面并且具有正的折射光焦度,并且包括负透镜和 正镜片。

    Compact zoom lens
    2.
    发明授权
    Compact zoom lens 失效
    紧凑型变焦镜头

    公开(公告)号:US5289317A

    公开(公告)日:1994-02-22

    申请号:US63041

    申请日:1993-05-19

    IPC分类号: G02B15/177 G02B15/14

    CPC分类号: G02B15/177

    摘要: A zoom lens comprising, from front to rear, a first lens group of negative power, a second lens group of positive power and a third lens group of negative power, wherein as zooming from the wide-angle end to the telephoto end is performed by moving the first, second and third lens groups, the second and third lens groups both are directed forward and the speed of movement of the third lens group is faster than that of movement of the second lens group, the zoom lens satisfying the following conditions:1

    摘要翻译: 一种变焦透镜,包括从前到后具有负功率的第一透镜组,正光焦度的第二透镜组和负光焦度的第三透镜组,其中,从广角端到望远端的变焦由 移动第一,第二和第三透镜组时,第二透镜组和第三透镜组都向前指向,并且第三透镜组的移动速度比第二透镜组的移动速度快,该变焦透镜满足以下条件: 1

    Projection apparatus
    3.
    发明授权
    Projection apparatus 失效
    投影仪

    公开(公告)号:US5096288A

    公开(公告)日:1992-03-17

    申请号:US586135

    申请日:1990-09-21

    CPC分类号: H04N9/3185 G02B27/0025

    摘要: A projection display apparatus, which projects a magnified image onto a screen, comprises an image forming system, such as a display panel, a projector including a plurality of lenses for projecting the image onto the screen, and a decentering mechanism for decentering some lenses in the projector with respect to the optical axis. Even if the image is distorted by arrangement of the screen and the optical axis and so on, the distortion is compensated by decentering the lenses and producing a decentering distortion.

    摘要翻译: 将放大图像投影到屏幕上的投影显示装置包括诸如显示面板的图像形成系统,包括用于将图像投影到屏幕上的多个透镜的投影仪,以及用于使一些透镜偏心的偏心机构 投影仪相对于光轴。 即使图像通过屏幕的布置和光轴等而失真,通过使透镜偏心并产生偏心变形来补偿失真。

    Retrofocus type lens
    4.
    发明授权
    Retrofocus type lens 失效
    Retrofocus型镜头

    公开(公告)号:US5303087A

    公开(公告)日:1994-04-12

    申请号:US787822

    申请日:1991-11-05

    CPC分类号: G02B9/12 G02B13/04

    摘要: A retrofocus type lens having a plurality of lenses divided into three lens units, or, in the order from a screen, a first lens unit, a second lens unit and a third lens unit, wherein letting the focal length of the entire lens system be denoted by fT, and the distance from a lens surface on the side of an original image to the original image by SK,SK>0.7 fTis satisfied, and the second lens unit and the first lens unit or the third lens unit each is provided with at least one aspherical lens of which at least one of the lens surfaces is aspherical.

    摘要翻译: 一种具有被分成三个透镜单元的多个透镜的反向焦点型透镜,或者从屏幕的顺序,第一透镜单元,第二透镜单元和第三透镜单元,其中使整个透镜系统的焦距为 由fT表示,并且通过SK,SK> 0.7fT从原始图像侧的透镜表面到原始图像的距离,并且分别设置第二透镜单元和第一透镜单元或第三透镜单元 其中至少一个非球面透镜,其中至少一个透镜表面是非球面的。

    Image synthesizing method
    5.
    发明授权
    Image synthesizing method 失效
    图像合成方法

    公开(公告)号:US06714689B1

    公开(公告)日:2004-03-30

    申请号:US08723825

    申请日:1996-09-30

    IPC分类号: G06K936

    CPC分类号: G06T3/4038

    摘要: An image synthesizing method for synthesizing a plurality of images partially overlapping with each other, having the steps of inputting a plurality of image data each corresponding to a plurality of images, extracting a matching point of duplicate areas of desired two images partially overlapping with each other among a plurality of images of the plurality of input image data, and sequentially detecting a position relationship between two images in accordance with the extracted matching point, detecting the position relationships of all images in accordance with the position relationship between two images sequentially detected by the position relationship detecting step, and synthesizing the images of the plurality of input image data in accordance with the position relationships of all images detected by the all image position relationship detecting step to form a synthesized image.

    摘要翻译: 一种用于合成彼此部分重叠的多个图像的图像合成方法,具有输入与多个图像对应的多个图像数据的步骤,提取彼此部分重叠的期望的两个图像的重复区域的匹配点 在所述多个输入图像数据的多个图像中,并且根据所提取的匹配点顺序地检测两个图像之间的位置关系,根据由所述匹配点顺序检测的两个图像之间的位置关系来检测所有图像的位置关系 位置关系检测步骤,并且根据由全图像位置关系检测步骤检测的所有图像的位置关系来合成多个输入图像数据的图像,以形成合成图像。

    Zoom lens
    6.
    发明授权
    Zoom lens 失效
    变焦镜头

    公开(公告)号:US5227919A

    公开(公告)日:1993-07-13

    申请号:US963264

    申请日:1992-10-19

    申请人: Koutaro Yano

    发明人: Koutaro Yano

    IPC分类号: G02B15/173

    CPC分类号: G02B15/173

    摘要: A zoom lens is disclosed comprising, in the order from a large conjugate side, a first lens unit of positive power, a second lens unit of negative power and a third lens unit of positive power, wherein when zooming from the wide-angle end to the telephoto end, the separation between the first and second lens units increases, the separation between the second and third lens units decreases, and the third lens unit moves toward the large conjugate side, the zoom lens satisfying the following conditions:0.3

    摘要翻译: 公开了一种变焦透镜,包括从大共轭侧的顺序,具有正光焦度的第一透镜单元,负光焦度的第二透镜单元和正光焦度的第三透镜单元,其中,当从广角端向 长焦端,第一和第二透镜单元之间的间隔增加,第二和第三透镜单元之间的间隔减小,并且第三透镜单元向大的共轭侧移动,变焦透镜满足以下条件:0.3

    Projection type display apparatus
    8.
    发明授权
    Projection type display apparatus 失效
    投影式显示装置

    公开(公告)号:US5231431A

    公开(公告)日:1993-07-27

    申请号:US619514

    申请日:1990-11-29

    IPC分类号: H04N9/31

    CPC分类号: H04N9/3105 H04N9/317

    摘要: This specification discloses a projection type display apparatus in which the lights of a plurality of display means forming images of different color component lights are reflected by or transmitted through a dichroic mirror to effect color synthesis and the synthesized lights are projected onto a screen by a projection lens. The astigmatism created by the lights being transmitted through the obliquely disposed dichroic mirror is suppressed to thereby obtain a good quality of image.

    摘要翻译: 本说明书公开了一种投影型显示装置,其中形成不同颜色分量光的图像的多个显示装置的光被二向色镜反射或透射通过分色镜进行颜色合成,并且合成的光通过投影投影到屏幕上 镜片。 通过倾斜设置的分色镜透过的光产生的像散被抑制,从而获得良好的图像质量。

    Zoom lens
    9.
    发明授权
    Zoom lens 失效
    变焦镜头

    公开(公告)号:US5179473A

    公开(公告)日:1993-01-12

    申请号:US591264

    申请日:1990-10-01

    CPC分类号: G02B15/177

    摘要: A zoom lens includes, in succession from the greatly conjugate side to the little conjugate side, a first lens unit having negative refractive power, and a second lens unit having positive refractive power. Zooming from the wide angle side to the telephoto side is effected by at least the second lens unit being moved toward the greatly conjugate side. The zoom lens satisfies the following condition:bf.sub.w /f.sub.w >1.6,where f.sub.w is the focal length of the entire system at the wide angle end, and bf.sub.w is the distance from the last lens surface of the second lens unit to the little conjugate side.

    摘要翻译: 变焦透镜从大体积共轭侧依次包括具有负屈光力的第一透镜单元和具有正屈光力的第二透镜单元。 通过至少第二透镜单元向大的共轭侧移动,从广角侧向望远侧放大。 变焦透镜满足以下条件:bfw / fw> 1.6,其中fw是广角端处整个系统的焦距,bfw是从第二透镜单元的最后透镜表面到小共轭侧的距离 。

    Wide-angle type zoom lens having inner-focus lens
    10.
    发明授权
    Wide-angle type zoom lens having inner-focus lens 失效
    具有内聚焦透镜的广角型变焦透镜

    公开(公告)号:US5000550A

    公开(公告)日:1991-03-19

    申请号:US471081

    申请日:1990-01-26

    IPC分类号: G02B15/22

    CPC分类号: G02B15/22

    摘要: A zoom lens includes a first lens group having a negative refractive power and having an object-side sub-group stationary during focusing and an image-side sub-group arranged to move for focusing purposes, and a second lens group having a positive refractive power and arranged on the image side of the first lens group, wherein the first lens group and the second lens group move axially at the same time and in differential relation for zooming purposes.

    摘要翻译: 变焦镜头包括具有负屈光力的第一透镜组,并且在聚焦期间具有静止的物体侧子组,以及布置成为了聚焦目的而移动的图像侧子组,以及具有正折光力的第二透镜组 并且布置在第一透镜组的像侧上,其中第一透镜组和第二透镜组在缩放目的的同时和差分关系上轴向移动。