Contec PT-970 A Series, Справочное руководство

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Appendix
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PT-970 A/B Series Reference Manual
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Display Optical Specifications
Parameter Condition Min. Typ.
Visual angle
(vertical)
CR ≥ 10
φ = 180°
Display.
Monochrome
80deg 85deg
φ = 0° 80deg 85deg
Visual angle
(horizontal)
φ = +90° 80deg 85deg
Φ = -90° 80deg 85deg
Surface brightness
(at center)
Display in white 255cd/m
2
300cd/m
2
* ”Surface
brightness
” represents a numerical value per display. The expected brightness through
a touch screen is about 80% lower than the above value.
Visual Range Definition
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.
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