In this investigation, a method for the preparation of gradient-refractive-index (GRIN) lenses by UV-energy-controlled polymerization has been developed. A glass reaction tube equipped with a sloped UV lamp was designed. Methyl methacrylate and diphenyl sulfide were used as the reactive monomer and nonreactive dopant, respectively. Ciba IRGACURE 184 (1-hydroxy-cyclohexyl-phenyl-ketone) was used as the initiator. The effects of initiator concentration, the addition of acrylic polymers, and the preparation conditions on the optical characteristics of the GRIN lenses produced by this method were also investigated. Refractive index distributions and image transmission properties were estimated for all GRIN lenses prepared.
© 2009 Optical Society of America
Optical Design and Fabrication
Original Manuscript: February 9, 2009
Revised Manuscript: March 30, 2009
Manuscript Accepted: April 1, 2009
Published: April 23, 2009
Jui-Hsiang Liu and Yi-Hong Chiu, "Process equipped with a sloped UV lamp for the fabrication of gradient-refractive-index lenses," Opt. Lett. 34, 1393-1395 (2009)