BenQ DLP PROJECTOR PE8700 User Manual
Page 11
10
A2. BRIGHTNESS UNIFORMITY
Unit:
%
Brightness: Default
Contrast:
Default
Uniformity =
9
9
8
7
6
5
4
3
2
1
)
13
,
12
,
11
,
10
(
L
L
L
L
L
L
L
L
L
E
E
E
E
MIN
+
+
+
+
+
+
+
+
1/20h
1/20w
E10
E12
E11
E13
L5
A3. BRIGHTNESS DIFFERENCE
Unit:
%
Brightness: Default
Contrast: Default
Brightness Difference=
9
9
8
7
6
5
4
3
2
1
))
13
,
12
,
11
,
10
(
)
13
,
12
,
11
,
10
(
(
L
L
L
L
L
L
L
L
L
E
E
E
E
MIN
E
E
E
E
MAX
+
+
+
+
+
+
+
+
−
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
be made at the center of each of the rectangles.
Contrast Ratio = Average lux value of the white rectangles/Average lux value
of the black rectangles