A new method for simultaneous measurement of phase retardation and optical axis of a compensation film

Yung Hsun Wu*, Ju Hyun Lee, Yi-Hsin Lin, Hongwen Ren, Shin Tson Wu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate a new method for simultaneously measuring the phase retardation and optic axis of a compensation film by using an axially-symmetric sheared polymer network liquid crystal (AS-SPNLC). The ASSPNLC is a liquid crystal structure with radial director distribution and its phase retardation has a gradient change from center to edges. When overlaying a tested compensation film with a calibrated AS-SPNLC cell between crossed polarizers, the optic axis and phase retardation value of the compensation film can be determined. This method is particularly useful for those optical systems whose optic axis and phase retardation are dynamically changing.

Original languageEnglish
Title of host publicationLiquid Crystal Materials, Devices, and Applications XI
DOIs
StatePublished - 14 Jul 2006
EventLiquid Crystal Materials, Devices, and Applications XI - San Jose, CA, United States
Duration: 21 Jan 200625 Jan 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6135
ISSN (Print)0277-786X

Conference

ConferenceLiquid Crystal Materials, Devices, and Applications XI
CountryUnited States
CitySan Jose, CA
Period21/01/0625/01/06

Keywords

  • Polymers
  • Sheared liquid crystal devices

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