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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 4008–4015

Preparation of Plastic Spherical Microlenses by Use of a Fluoropolymer Stencil and Oil-Bath Heating

Hiromoto Tamura, Ryousuke Kojima, and Hiroaki Usui  »View Author Affiliations


Applied Optics, Vol. 42, Issue 19, pp. 4008-4015 (2003)
http://dx.doi.org/10.1364/AO.42.004008


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Abstract

A new method for fabricating plastic spherical microlenses was developed, which allowed self-alignment of lenses and self-organized formation of a spherical shape. First a low-surface-energy fluoropolymer thin film was deposited and patterned as a stencil. Then photosensitive phenol resin was patterned on it as the lens material. Finally the resin was annealed in an oil bath to form a sphere. The molten phenol resin spontaneously formed a sphere and positioned itself in the center of the fluoropolymer ring pattern as a result of the difference of surface free energy and the equivalently zero-gravity condition in the oil bath. When a light-emitting-diode printer head was loaded with spherical microlenses, its optical output increased by 1 order of magnitude.

© 2003 Optical Society of America

OCIS Codes
(220.3630) Optical design and fabrication : Lenses
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.4000) Optical devices : Microstructure fabrication

Citation
Hiromoto Tamura, Ryousuke Kojima, and Hiroaki Usui, "Preparation of Plastic Spherical Microlenses by Use of a Fluoropolymer Stencil and Oil-Bath Heating," Appl. Opt. 42, 4008-4015 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-19-4008

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