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SE4400 Integration Guide
Exit Window Notes
•
For near zone, A is measured from the back surface (farther from the engine) of
the exit window.
•
For far zone, A is measured from the front surface (closer to the engine) of the exit
window.
•
Near and far zones, specified in
exit-window distance measured from the engine. This ensures the system does not
have stray light (the internal reflection) impact from the LED illumination. When
these recommendations are followed, there is no impact on the performance of
near or far distances. The terminology near or far image focusing is used to depict
different performance configurations.
•
Test condition was set at 10 maximum millisecond exposure time and 127
maximum gain.
•
Consider anti-reflection coating if the exposure time is more than 10 msec. For
example, for a 30 msec exposure time, use a double-sided AR coated exit window.
(See
Table 2-3 on page
•
The distance between 2 mm (0.08 inch) and 3.8 mm (0.15 inch) is regarded as
"gray area" and not recommended for use.
•
Either positive or negative tilt angles can be used for the exit-window, based on the
housing design.
•
INTEGRATION TOLERANCES ARE NOT INCLUDED.
2-10
Table 2-4 on page
2-7.)
2-9, are primarily defined for the
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