Contec 955 Series, User Manual, Page: 17 / 116

2. System Reference
10
PT-955LXC-DC5311 User’s manual
Display Optical Specifications
Table 2.3. Display Optical Specifications
Parameter Condition Min. Typ.
φ = 180° 70deg 80deg
Visual angle
(vertical)
φ
= 0° 70deg 80deg
φ
= +90° 70deg 80deg Visual angle
(horizontal)
CR ⊇ 10
φ = -90°
Display.
Monochrome
70deg 80deg
Surface brightness
(at center) Display in white 190cd/m
2
250cd/m
2
* “Surface brightness” represents a numerical value per display. The expected brightness through a touch panel is about
80% lower than the above value.
Contrast ratio (CR) =
Brightness at screen center with white displayed
Brightness at screen center with black displayed
Left
( φ = -90
o
)
Z
Y
X
Top
( φ = 180
o
)
Right
(
φ
= 90
o
)
Bottom
(
φ
= 0
o
)
(
θ
= 0
o
)
Measurement direction
θ
Module
φ
Figure 2.1. Definition of viewable range
CAUTION
The above optical specification data shows optical characteristics of the liquid crystal in the display;
the data does not represent the actual view on the display or its viewing angles.