Definition Of Contrast Ratio; Definition Of Luminance Uniformity; Definition Of Response Times; Definition Of Viewing Angles - NEC NL10276BC24-21 Datasheet

4.10.2 Definition of contrast ratio

The contrast ratio is calculated by using the following formula.

4.10.3 Definition of luminance uniformity

The luminance uniformity is calculated by using following formula.
The luminance is measured at near the 5 points shown below.

4.10.4 Definition of response times

Response time is measured at the time when the luminance changes from "white" to "black", or
"black" to "white" on the same screen point, by photo-detector. Ton is the time when the
luminance changes from 90% down to 10%. Also Toff is the time when the luminance changes
from 10% up to 90% (See the following diagram.).
Luminance

4.10.5 Definition of viewing angles

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Contrast ratio (CR) =
Luminance uniformity (LU) =
171
①
128
384
④
640
100%
90%
White
Black
10%
0%
Normal axis (Perpendicular)
θL
CN2
θU
Left
CN1
θD
Lower
DATA SHEET DOD-PP-1157 (1st edition)
Luminance of white screen
Luminance of black screen
Maximum luminance from ① to ⑤
Minimum luminance from ① to ⑤
512 853
②
③
⑤
Ton
12 o'clock
Upper
θR
Right
NL10276BC24-21
Toff
26