This study aimed to identify the luminance and contrast levels necessary to minimise the threshold identification size of bright letters displayed over a dark background on an LCD under low (1.5 lux) and high (260 lux) lighting conditions. White, pure red, pure green and pure blue upper-case Bailey Lovie letters with a contrast between 3:1 and 300:1 were displayed on an LCD to 20 participants. The threshold identification size was ...
This report outlines the measurements performed on an Apple M9179LL/A 30' 2560 x 1600 LCD panel to establish its luminance response function, luminance uniformity, luminance temporal stability, response time and spectral characteristics. The results of this report were used in subsequent reports (Fletcher, Sutherland, & Nugent, in press; Fletcher, Sutherland, Nugent, & Grech, in press) which examined the minimum character size that allowed for fast and accurate identification of numbers, ...
This study aimed to identify the minimum font size that supports fast and accurate identification of text and symbols displayed on an LCD under ambient lighting conditions similar to those in naval ships' operations rooms. A series of letters, numbers and combat symbols were displayed on an LCD for either 106 ms or 173 ms. Participants were asked to identify each stimulus and the certainty of their decision. Letters and ...
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