Zoom lens for fixed conjugates
    1.
    发明授权
    Zoom lens for fixed conjugates 失效
    固定共轭物的变焦镜头

    公开(公告)号:US3905685A

    公开(公告)日:1975-09-16

    申请号:US44255874

    申请日:1974-02-13

    Applicant: XEROX CORP

    CPC classification number: G02B13/24 G02B15/161

    Abstract: Heliar, Dagor and Gauss lens systems, by way of example, are converted to zoom lens systems by severing outer lens elements and displacing the severed elements equal distances but in opposite directions relative to the main body of the system. The curvatures of severed elements are critical and are discovered by empirical procedures.

    Abstract translation: 作为示例,Heliar,Dagor和Gauss透镜系统通过切断外部透镜元件并相对于系统主体在相反的方向上等距离地移位切割元件而被转换成变焦透镜系统。 切断元件的曲率是至关重要的,通过经验程序发现。

    VARIABLE MAGNIFICATION LENS SYSTEM

    公开(公告)号:CA1081512A

    公开(公告)日:1980-07-15

    申请号:CA272425

    申请日:1977-02-23

    Applicant: XEROX CORP

    Abstract: VARIABLE MAGNIFICATION LENS SYSTEM A variable magnification lens is exemplified by a 6-element symmetrical zoom lens for use between fixed conjugates at magnification ranging from 1.007X to 0.615X. The outer elements remain fixed relative to the unit. The inner elements form two integral pairs on each side of the central aperture and move symmetrically with respect to it to effect magnification change while maintaining a substantially flat image field over the entire magnification range.

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