Installation 12
Important considerations• The best environment for diagnostic
imaging is one with controlled and
dimmed ambient light. The human eye's
sensitivity depends on the ambient light
strength. It is most sensitive to small
contrast changes (or subtle image
details) at limited ambient light levels.
• The best ambient light level, expressed
in Lux, depends on the application. An
office illumination typically requires 500
Lux. A dimmed environment, like a
softcopy room, requires less than 100
Lux.
• Using your display in a controlled and
dimmed environment also extends its
lifetime, because the display can
operate at limited brightness and
contrast. These levels correspond to the
calibrated position in most cases.
• A controlled ambient light environment
implies the ambient light is as constant
as possible. Cover windows to keep out
the daylight. Avoid switching the lights
and viewing boxes on and off. A
consistent environment results in more
image consistency and less eye fatigue.
• Avoid reflections in the picture tube.
Provide indirect lighting. Don't place the
displays in front of or close to a light
source like a window or viewing box,
although this may be very tempting. As
a rule of thumb, keep viewing boxes at
least one metre (3 feet) away from the
displays.