Advantech IDK-2112 Series, Руководство пользователя, Страница: 37 / 41

31 IDK-2112 User Manual
Appendix A
O
ptical
Characteristics
Note 1 Definition of Viewing Angle (

X
,

Y
)
Note 2 Definition of Contrast Ratio (CR):
The contrast ratio can be calculated by the following expression.
Contrast Ratio (CR) = L255 / L0
L255: Luminance of gray level 255
L0: Luminance of gray level 0
CR = CR (5)
CR (X) is corresponding to the Contrast Ratio of the point X at Figure in Note
6.
Note 3 Definition of Response Time (TR, TF):
Note 4 Definition of Luminance of White (LC):
Measure the luminance of gray level 255 at center point
LC = L (5)
L (x) is corresponding to the luminance of the point X at Figure in Note (6).