OKRA OKRA0750RWU790F30, User Manual

Page: 36 / 41

12.
Inspection condition
12.1 Environment
Temperature
：
23±3
℃
Humidity
：
55±10%RH
12.2 Illuminance
Brightness:1200
～
1500LUX;distance: 20-30CM;Angle:Relate 45°surround.
12.3 Inspect method
12.4 Display area
12.5 Ghosting test method
Three-color ghosting is measured with following transition from horizontal 3 scale pattern to
vertical 3 scale pattern. The listed optical characteristics are only guaranteed under the controller &
waveform provided by OKRA .
1
）
Measurement Instruments
：
X-rite i1Pro
2
）
Ghosting formula:
W ghosting
：△
E= Max (
Δ
Eab(W-W, R-W),
Δ
Eab(W-W, B-W),
Δ
Eab(B-W, R-W))
K ghosting
：△
E= Max (
Δ
Eab(B-B, W-B),
Δ
Eab(B-B, R-B),
Δ
Eab(R-B, W-B))
R ghosting
：△
E= Max (
Δ
Eab(R-R, W-R),
Δ
Eab(R-R, B-R),
Δ
Eab(B-R, W-R))
20min 30min 20min
EPD Module User Manual
2.5$7HFKQRORJLHV
5HY
36
／
41