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Proceedings Paper

Optical phase-control devices using liquid crystal molecular orientation density
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Paper Abstract

We propose optical phase-control devices using a liquid crystal (LC) material without applying a voltage, and demonstrate a composite alignment of LC molecules on a substrate with a patterned photo-resist film, where LC molecules are partly aligned parallel and perpendicular directions divided into very small areas on the substrate. The patterned film such as randomly distributed circular areas of small diameter size is fabricated by using a photo-mask and a photolithography technique. The LC cells are prepared using the locally composite alignment substrate and a perpendicular alignment substrate. The optical phase of the transmission light through the different pattern density regions was measured. Then, it is found that the optical retardation of the higher pattern density region is larger than that of the lower one.

Paper Details

Date Published: 22 August 2005
PDF: 8 pages
Proc. SPIE 5936, Liquid Crystals IX, 593614 (22 August 2005); doi: 10.1117/12.618168
Show Author Affiliations
Satoshi Yanase, Akita Research Institute of Advanced Technology (Japan)
Marenori Kawamura, Akita Univ. (Japan)
Rumiko Yamaguchi, Akita Univ. (Japan)
Takeshi Takahashi, Sankyo Kogaku Industries Ltd. (Japan)
Susumu Sato, Akita Univ. (Japan)

Published in SPIE Proceedings Vol. 5936:
Liquid Crystals IX
Iam-Choon Khoo, Editor(s)

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