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A study of the virtual screen image of flat‐faced CRTs
Author(s) -
Saito Tsunenari
Publication year - 1999
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 - 10.1889/1.1984473
Subject(s) - crts , radius , optics , distortion (music) , surface (topology) , computer graphics (images) , flat surface , refraction , computer science , physics , materials science , geometry , mathematics , telecommunications , amplifier , computer security , composite material , bandwidth (computing)
— Simulation of a CRT with a flat outer surface and a spherical inner surface was performed to determine the virtual screen image made by refraction in the glass panel. The simulation calculated the radius of the panel inner surface for the flat‐faced CRT to make a perfectly flat virtual screen image at each eye position. With H as the screen height, display‐monitor CRTs used with eye positions closer than 1 H show that the radius of the panel inner surface R = 18 H is the most appropriate. On the other hand, for TV CRTs with a normal eye distance of 3 H or greater, a radius of R = 40 H or more is required to obtain a flat virtual image. The paper also clarifies the influence of panel glass thickness T on the distortion of the screen image.