Fabrication of high-efficiency Fresnel-type lenses by pinhole diffraction imaging of sol-gel hybrid materials

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Sol-gel hybrid materials containing a large quantity of photoactive molecules exhibited large changes in both refractive index and volume on UV exposure. The materials were used for fabrication of Fresnel-type lenses using a simple method: pinhole diffraction imaging. With this technique, problems associated with the contact method could be overcome and Fresnel-type lenses with good focusing performance could be fabricated easily. Importantly, a high diffraction efficiency approaching 85% could be obtained. (C) 2004 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2004-11
Language
ENG
Article Type
Article
Keywords

LIQUID-CRYSTALS; GLASS-FILMS; POLYMER

Citation

APPLIED PHYSICS LETTERS, v.85, no.19, pp.4289 - 4291

ISSN
0003-6951
DOI
10.1063/1.1815393
URI
http://hdl.handle.net/10203/963
Appears in Collection
MS-Journal Papers(저널논문)
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