An optical structure which combines a Fresnel zone plate with an induced convex lens on a PLZT substrate has been proposed to enable initial focusing under no applied potential, a continuous range of short focal distances, and the ability to switch the focal point to infinity. The transmitted optical field was analytically described and a simple formula was derived that demonstrated the dependence of the new focal length on each focusing mechanism. The numerical example provided showed a continuous change of focal length of about 16% while maintaining a good parabolic shape of the induced lens.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Continuous variation in Fresnel lens focal length


    Beteiligte:
    Castro, F. (Autor:in) / Nabet, B. (Autor:in)

    Erschienen in:

    Proceedings of LEOS'94 ; 1 ; 136-137 vol.1


    Erscheinungsdatum :

    01.01.1994


    Format / Umfang :

    147733 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Continuous Variation in Fresnel Lens Focal Length

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1994


    FRESNEL LENS, FRESNEL LENS UNIT, AND HEAD-UP DISPLAY

    KASAZUMI KEN'ICHI / MORI TOSHIYA / KUBOTA KOSUKE et al. | Europäisches Patentamt | 2017

    Freier Zugriff

    Fresnel lens, Fresnel lens unit, and head-up display

    KASAZUMI KEN′ICHI / MORI TOSHIYA / KUBOTA KOSUKE et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Focal length tunable fluidic adaptive lens

    Zhang, D. / Lo, Y.-H. | IEEE | 2003


    Variable-focal-length microelectromechanical lens [3289-21]

    Mescher, M. J. / Reed, M. L. / Schlesinger, T. E. et al. | British Library Conference Proceedings | 1998