EL640.480-A SB Series Operations Manual (020-0358-00A)
18
Optical
Determined at 25°C ambient @60 Hz frame rate.
Display Colour
Wide band amber (ZnS:Mn)
Table 13. Optical Characteristics.
Areal Luminance
On luminance
A4
AD4
A4
AD4
56 cd/m
2
(16.3 fL) typ.
22 cd/m
2
(6.4 fL) typ.
40 cd/m
2
(12.2 fL) min.
16 cd/m
2
(5.0 fL) min.
Average of the center and four corners of the screen, at GL 15.
Non-uniformity
Maximum 35%
(GL 15)
= (1- min. luminance/max luminance) x 100.
Maximum difference between any two of five
points (center and four corners).
Luminance Variation (Time)
Maximum
20%
10,000 h at 25°C (GL 15)
Luminance Variation (Temperature)
Maximum
15%
over 0…+55°C range. Measured with full field
at GL 15.
Luminance Contrast Ratio
MInimum
AD4
12:1 @ 500lx
3:1 @ 2500lx
Viewing Angle
Minimum
160
°
Illuminance Classification
1 … 10 lx
10 … 100 lx
100 … 1000 lx
1000 … 10000 lx
10000 … 100000 lx
dark
dim
office
bright
sunlight
Filter
The luminance contrast of the ICE version of the display EL640.480-AD4 is
sufficient for operation without any contrast enhancement. For best overall
performance in high or low ambient luminance levels, a neutral gray circular
polarizing filter with anti-glare coating or etch is the usual choice. This filter will
make the reflecting electrodes of the display darker and will improve the
contrast ratio. The anti-glare coating on the filter should be facing the user. The
ICE display -AD4 is as option available with a protectective film with an anti glare
coating optically bonded directly on the display glass.