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    • 5. 发明授权
    • Compact-size zoom lens system
    • 紧凑型变焦镜头系统
    • US5153777A
    • 1992-10-06
    • US622715
    • 1990-12-05
    • Takashi OkadaAkira FukushimaHiromu UmedaHisashi TokumaruJunji HashimuraHisayuki Masumoto
    • Takashi OkadaAkira FukushimaHiromu UmedaHisashi TokumaruJunji HashimuraHisayuki Masumoto
    • G02B13/18G02B15/16G02B15/173
    • G02B15/173
    • A compact-size, light-weight, low-cost zoom lens system with high optical quality is achieved by using a ray restrictor placed at the most object side of the zoom lens system. In one type, the ray resistor shifts toward the object at a speed different from that of the most object side lens of the zoom lens system as the zoom lens system is zoomed toward the longest focal length, which effectively blocks harmful rays causing coma flare in the peripheral area. In another type, the aperture diameter of the ray restrictor varies according to a zooming operation. The ray restrictor of any type is especially effective when used in a zoom lens system composed of two lens groups. By introducing one or more aspherical surfaces satisfying a certain condition (or conditions) in the zoom lens system, various aberrations are further favorably corrected.
    • 通过使用放置在变焦透镜系统的最物体侧的射线限制器来实现具有高光学质量的紧凑型,重量轻,低成本的变焦透镜系统。 在一种类型中,随着变焦透镜系统朝向最长焦距变焦,射线电阻以与变焦透镜系统的最物体侧透镜的速度不同的速度朝向物体移动,这有效地阻挡了导致昏迷的有害射线 周边地区。 在另一种类型中,光线限制器的孔径根据变焦操作而变化。 当用于由两个透镜组组成的变焦透镜系统中时,任何类型的光线限制器是特别有效的。 通过在变焦透镜系统中引入满足一定条件(或条件)的一个或多个非球面,可进一步有利地校正各种像差。
    • 10. 发明授权
    • Zoom camera
    • 变焦相机
    • US4951075A
    • 1990-08-21
    • US294121
    • 1989-01-06
    • Hisashi TokumaruHisayuki MasumotoYukio Maekawa
    • Hisashi TokumaruHisayuki MasumotoYukio Maekawa
    • G02B7/10
    • G02B7/102
    • In a zoom camera disclosed, a memory of an auto-zooming program lines is provided in which a relation between the object distance and the image mangification added with an element of the depth of field is set in a predetermined manner according to each kind of photographing mode, and such a focal length of a focusing lens is computed that the image mangification is set to be a predetermined value based on the object distance and a program line of a photographing mode selected by a user, whereby the focusing lens is driven so as to obtain the focal length. Consequently, auto-zoom photographing at a depth of field and an image magnification suitable for each kind of photographing mode can be achieved. Further, a memory of program lines set according to the vertical and horizontal camera attitudes in photographing is provided, and the image mangification can be changed over according to each camera attitude.
    • 在公开的变焦摄像机中,提供自动变焦程序行的存储器,其中根据每种拍摄方式以预定的方式设置物体距离和加上景深元素的图像均匀度之间的关系 模式,并且计算聚焦透镜的这样的焦距,即基于物体距离和由用户选择的拍摄模式的程序行将图像伪装设置为预定值,由此驱动聚焦透镜,使得 以获得焦距。 因此,可以实现景深的自动变焦拍摄和适合于各种拍摄模式的图像放大。 此外,提供根据拍摄中的垂直和水平摄像机姿态设置的节目行的存储器,并且可以根据每个摄像机姿态来切换图像管理。