BenQ V37X, Product Service Manual, Page: 44 / 192

44
13 Viewing angle by CR
≥
20
x axis, right ( Ф =0º)
x axis, left( Ф =180º)
y axis, up( Ф =90º)
y axis, down ( Ф =270º)
80
80
80
80
85
85
85
85
-
-
-
-
1. Test conditions: (unless otherwise specified, all measurement shall be made under the test conditions below)
- Ambient illumination level: dark (<10 lux)
- Ambient temperature: 25 °C
- Optical test will base on standard mode and criteria follow panel Spec. x 80% brightness.
- Warm-up: 60 minutes
- Test equipment: Pattern generator, Minolta CA210.
- Measurement locations on the flat panel:
2. Contrast Ratio CR= Surface luminance (full white pattern) / Surface luminance (full black pattern)
3. Luminance SB
WH
=L5
4. White variation :
δ
W = Max (L1, L2,…L5) / Min (L1, L2,…L5)
5. Viewing angle:
Measurement is done at position 5
Viewing angle origin is the axis normal to the flat panel. Left (L) and right (R) values are the maximum angles
for which CR ≥ 10. Up (U) and down (D) values are the maximum angles for which CR ≥ 10.
See figure below:
W/4
W/2
3W/4
5
1
D/4
3D/4
D/2
2
4
3