A small number of bifunctional monomers are mixed with a nematic liquid crystal (LC) and cured with a distributed electric field, which is produced by a circular-hole-patterned electrode structure. A gradient type of lens, that is, a LC microlens, is investigated for various polymer concentrations. Addition of 3% polymer is enough to freeze the gradient-index properties of the structure in the form of a convex lens, and a polymer-stabilized LC microlens is demonstrated. Although a lower concentration of polymer cannot hold the distribution properties in a curing process, it can maintain the variable focus as a nematic material can. The polymer networks can also eliminate the disclination line that usually appears and causes the lens in this type of LC device to deteriorate.
© 1997 Optical Society of AmericaFull Article | PDF Article
Shin Masuda, Toshiaki Nose, and Susumu Sato
Appl. Opt. 37(11) 2067-2073 (1998)
Shin Masuda, Sounosuke Takahashi, Toshiaki Nose, Susumu Sato, and Hiromasa Ito
Appl. Opt. 36(20) 4772-4778 (1997)
Hongwen Ren, Yun-Hsing Fan, and Shin-Tson Wu
Opt. Lett. 29(14) 1608-1610 (2004)