Table of Contents
Advertisement
All manuals and user guides at all-guides.com
A2. BRIGHTNESS UNIFORMITY
Unit:
%
Brightness: Default
Contrast:
Default
MIN
Uniformity =
E10
L5
E12
A3. BRIGHTNESS DIFFERENCE
Unit:
%
Brightness: Default
Contrast: Default
Brightness Difference=
(
MAX
(
E
10
,
E
11
,
E
12
,
E
13
A4. ANSI CONTRAST
Unit:
Contrast : 1
Brightness: Default
Contrast: Default
Contrast Ratio shall be determined from illuminance values obtained from a
black-and-white "chessboard" pattern consisting of 16 equal rectangles. The
white rectangles shall be at 100% gray and the black rectangles at 0% gray.
Illuminance measurements shall
Contrast Ratio = Average lux value of the white rectangles/Average lux value
of the black rectangles
(
E
10
,
E
11
,
E
12
,
E
13
)
L
1
1/20w
1/20h
E11
E13
−
)
MIN
(
E
10
,
E
11
,
E
12
,
be made at the center of each of the rectangles.
+
+
+
+
+
L
2
L
3
L
4
L
5
9
E
13
))
+
+
+
L
1
L
2
L
3
L
4
+
+
+
L
6
L
7
L
8
L
9
+
+
+
+
+
L
5
L
6
L
7
L
8
L
9
10
9
Advertisement
Table of Contents
