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Variable Transmission Coatings for Picture Tubes
Author(s) -
Vries G. C.
Publication year - 1999
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1833980
Subject(s) - brightness , transmission (telecommunications) , continuously variable transmission , optics , quality (philosophy) , daylight , variable (mathematics) , materials science , computer science , telecommunications , physics , mathematics , mathematical analysis , quantum mechanics
The glass transmission of a CRT determines the compromise between two perceptual parameters that are of key importance: the brightness and the daylight contrast. Thus the picture quality of a CRT strongly depends on the glass transmission. This paper explains how optimal picture quality under varying ambient illumination can be achieved with user‐adjustable glass transmission. The two variable transmission technologies that are currently investigated by Philips, i.e. photochromics and electrochromics, are discussed.