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http://hdl.handle.net/11452/30824
Başlık: | Switchable large-aperture liquid-crystal diffractive lenses |
Yazarlar: | Xia, J. Uludağ Üniversitesi/Mühendislik Fakültesi/Elektrik-Elektronik Mühendisliği Bölümü. Demirer, Mutlu 57195473676 |
Anahtar kelimeler: | Materials science Optics Physics Diffractive lenses Liquid-crystal devices Voltage Adaptive optics Adaptive systems Diffraction efficiency Efficiency Liquid crystal displays Phase modulation Liquid crystals Adaptive optics systems Aperture diameter Diffractive lens Fast switching Fresnel diffractive lens Liquid crystal devices Low driving voltage Structure design |
Yayın Tarihi: | 2017 |
Yayıncı: | Natl Inst Optoelectronics |
Atıf: | Xia, J. ve Demirer, M. (2017). ''Switchable large-aperture liquid-crystal diffractive lenses''. Journal of Optoelectronics and Advanced Materials, 19(7-8), 449-453. |
Özet: | Switchable large aperture liquid crystal Fresnel diffractive lenses with aperture diameters of 20-30 mm were designed, fabricated, and demonstrated experimentally with multiple 2 pi radian phase modulation in each Fresnel zone. The structure design with multiple 2 pi radian phase modulation in each Fresnel zone can reduce difficulty in micro-fabrication of the lenses. The influence of electrode gaps of Fresnel lenses on their diffraction efficiencies was examined by numerical analysis. The lenses showed fast switching speed, low driving voltages (<2 V), and high diffraction efficiencies (>62%). They have potential to be applied for autofocus imaging devices and adaptive optics system. |
URI: | 1841-7132 http://hdl.handle.net/11452/30824 |
ISSN: | 1454-4164 |
Koleksiyonlarda Görünür: | Scopus Web of Science |
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