会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 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。