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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
Average of the center and four corners of the screen, at GL 15.
Non-uniformity
Maximum
Luminance Variation (Time)
Maximum
Luminance Variation (Temperature)
Maximum
Luminance Contrast Ratio
MInimum
Viewing Angle
Minimum
Illuminance
10 ... 100 lx
100 ... 1000 lx
1000 ... 10000 lx
10000 ... 100000 lx
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.
18
EL640.480-A SB Series Operations Manual (020-0358-00A)
A4
AD4
A4
AD4
35%
(GL 15)
20%
15%
AD4
160°
Classification
1 ... 10 lx
office
bright
sunlight
2
56 cd/m
(16.3 fL) typ.
2
22 cd/m
(6.4 fL) typ.
2
40 cd/m
(12.2 fL) min.
2
16 cd/m
(5.0 fL) min.
= (1- min. luminance/max luminance) x 100.
Maximum difference between any two of five
points (center and four corners).
10,000 h at 25°C (GL 15)
over 0...+55°C range. Measured with full field
at GL 15.
12:1 @ 500lx
3:1 @ 2500lx
dark
dim
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