Electrically tunable binary phase Fresnel lens based on a dielectric elastomer actuator.
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DOI: 10.1364/oe.25.023801
Abstract: We propose and demonstrate an all-solid-state tunable binary phase Fresnel lens with electrically controllable focal length. The lens is composed of a binary phase Fresnel zone plate, a circular acrylic frame, and a dielectric elastomer… read more here.
Keywords: binary phase; fresnel; phase fresnel; tunable binary ... See more keywords
Chromatic confocal measurement method using a phase Fresnel zone plate.
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DOI: 10.1364/oe.449031
Abstract: A chromatic confocal measurement method based on a phase Fresnel zone plate (FZP) is described. Strong dispersion of FZP results in significant axial focal shift. The axial dispersion curve is close to linear within a… read more here.
Keywords: measurement method; chromatic confocal; measurement; confocal measurement ... See more keywords