Ackermann Instrumente GmbH
•
Eisenbahnstr 65-67
•
78604 Weilheim Germany
Tel. : +49 7461 74630
•
Fax. : +49 7461 74654
•
email.: info@ackermanninstrumente .de
Side 28of 36
2. The Luminance is luminance value at 5 points average across the LCD surface 50cm from the
surface with full white screen (Location 1,2,3,4,5). For more information see FIG.2.
3. The variation in surface luminance, SB
V
is defined as :
Maximum (B
1
, B
2
, ....B
13
) - Minimum (B
1
, B
2
, ....B
13
)
Average (B
1
, B
2
, .... B
5
)
Where B1 to B13 are the luminance with all pixels displaying white at 13 locations.
FIG. 2 Luminance
256
512
20mm
20mm
192
384
576
( pi xel )
5
4
3
9
11
12
13
10
8
7
6
2
1
768
4. The response time is defined as the following figure and shall be measured by
switching the input signal for “black” and “white”.
FIG. 3 Response Time
Tr
R
Tr
D
100
90
10
0
%
Opt i cal
Response
whi t e
bl ack
whi t e
5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are
determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which
is normal to the LCD surface.
××××
100(%)
