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Cell‐parameter measurement system for a liquid‐crystal cell by using a telecentric lens
Author(s) -
Kawamura Marenori,
Sano Takumi,
Sato Susumu
Publication year - 2009
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/jsid17.10.833
Subject(s) - liquid crystal , optics , materials science , lens (geology) , wavelength , oblique case , viewing angle , liquid crystal display , physics , philosophy , linguistics
— A two‐dimensional cell‐parameter measurement for determining the pretilt angle in addition to both the cell thickness and twist angle of liquid‐crystal (LC) cells is proposed. Because the measurement images of an LC cell is perfectly focused by using a telecentric lens, the 2‐D cell‐parameter distribution can be determined by measuring the Stokes parameters of the LC cell at several different wavelengths by changing the oblique angle of the incident light on the LC cell.