Phase-Shift Imaging Polarimetry for Measuring the Physical Parameters of a Twisted Nematic Liquid Crystal Device Without Periodic Ambiguity

Autor:	Chien Chou, Chih-Jen Yu, Ching-Hung Hung, Kuei-Chu Hsu
Rok vydání:	2014
Předmět:	Materials science Birefringence Biaxial nematic business.industry media_common.quotation_subject Polarimetry Ambiguity Condensed Matter Physics Polarization (waves) Electronic Optical and Magnetic Materials Optics Liquid crystal Electrical and Electronic Engineering business media_common
Zdroj:	Journal of Display Technology. 10:758-765
ISSN:	1558-9323 1551-319X
DOI:	10.1109/jdt.2014.2319174
Popis:	The polarization conversion of a twisted nematic liquid crystal device can be completely characterized by the physical parameters, including the cell parameters and equivalent birefringent parameters. Periodic ambiguity is unavoidable in the measurement; therefore, the exact values of these parameters cannot be uniquely determined. To solve this problem, phase-shift imaging polarimetry is developed to measure the spatial distribution of the physical parameters of a twisted nematic liquid crystal device without periodic ambiguity. The proposed method experimentally showed that as few as eight intensity images are adequate to uniquely determine all of the physical parameters based on an analytical approach.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::136c08b70d4c565de45e231c4c1f286c https://doi.org/10.1109/jdt.2014.2319174 Zobrazit plný text záznamu