Simplified version of zoom lens for television cameras where image remains in focus on photocathode when focal length of optical system is varied, creating illusion that camera is moving toward or away from scene; brightness of image remains constant since relative aperture is unchanged; image varied over range of 4:1.


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    Titel :

    Zoom lenses


    Weitere Titelangaben:

    Wireless World


    Beteiligte:
    Hopkins, H.H. (Autor:in)

    Erschienen in:

    Wireless World ; 55 , n 7


    Erscheinungsdatum :

    1949


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Infrared optics and zoom lenses

    Mann, Allen / SPIE / Society of Photo-optical Instrumentation Engineers | TIBKAT | 2009


    Perspective projection camera model for zoom lenses

    Willson, R. G. / Shafer, S. A. / Institute of Geodesy and Photogrammetry et al. | British Library Conference Proceedings | 1994


    Zooming-component loci of mechanically compensated zoom lenses

    Tanaka, K. / SPIE / Optical Society of India | British Library Conference Proceedings | 1999


    Zoom lens design using gradient-index lenses [2173-20]

    Deguchi, M. / Moore, D. T. / Kindred, D. S. et al. | British Library Conference Proceedings | 1994


    Modeling and calibration of automated zoom lenses (Invited Paper) [2350-18]

    Willson, R. G. / SPIE | British Library Conference Proceedings | 1994