Cleaning optical components
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Manta Technical Manual V7.9.0
Locating impurities
Before you dismount the lens you should find out if the impurity is on the filter,
lens, or sensor.
1.
Start acquiring a uniform image (e.g. a white sheet of paper) with the camera.
2.
To identify the affected surface, move the suspected optical component and
see if the contamination follows this movement.
a.
If you move only the lens (not the camera) and the impurity moves as
well, the impurity is on the lens.
b.
If you move the IR cut filter/protection glass window and the impurity
moves as well, the impurity is on the filter/protection glass. Carefully
remove the filter/protection glass and clean it on both sides using the
techniques explained in the next section.
3.
If the impurity is neither on the lens nor the IR cut filter/protection glass, it is
probably on the sensor.
Materials for cleaning optical components
Removing IR cut filter or protection glass
To remove IR cut filter or protection glass use the special tool (Allied Vision order
code E9020001 for 16 mm filter and order code 3851 for 22 mm filter).
Use only these cleaning materials for optical components
•
Optic approved lens cotton, cloth, or tissue that is chemically pure and free
from silicones and other additives.
•
Optic approved low residue cleaning liquid.
