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The Fourier scope: An optical instrument for measuring LCD viewing‐angle characteristics
Author(s) -
Saleh Bahaa E. A.,
Lu Kanghua
Publication year - 1996
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 - 10.1889/1.1984986
Subject(s) - viewing angle , liquid crystal display , optics , fourier transform , scope (computer science) , fidelity , computer science , materials science , physics , telecommunications , quantum mechanics , programming language
— An optical system called the Fourier scope is an improved alternative to the conoscopic microscope for instant measurement of LCD viewing‐angle patterns. The Fourier scope includes a hand‐held detecting head for measuring on‐line flat‐panel LCDs, and allows non‐critical measurement distances ranging from millimeters to centimeters, a viewing‐angle range of ±70°, the use of true color patterns describing color fidelity or dispersion effects, and approximately linear viewing‐angle coordinates.