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Heterodyne method for determining the surface tilt angle of nematic liquid‐crystal displays
Author(s) -
Hwang Shug June,
Hsu Min Hua
Publication year - 2006
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 - 10.1889/1.2393028
Subject(s) - tilt (camera) , optics , liquid crystal , materials science , heterodyne (poetry) , sensitivity (control systems) , rotation (mathematics) , interferometry , reflection (computer programming) , surface (topology) , optical path length , heterodyne detection , optical path , physics , computer science , acoustics , laser , mechanical engineering , geometry , mathematics , electronic engineering , artificial intelligence , programming language , engineering
— The high‐sensitivity pretilt‐angle measurement of liquid‐crystal displays, based on the modified crystal‐rotation configuration and the use of a common‐path heterodyne interferometer, is proposed. In this technique, environmental disturbance and surface reflection are eliminated to a large extend, thus providing advantages for both constructing a simple‐optics measurement system and achieving fast measurement with high accuracy and sensitivity.