© 2016 Thorlabs Scientific Imaging468
DCx Camera Functional Description and SDK Manual
5.4.7.3 Cleaning the Filter Glasses
When using the DCx camera with it's lens removed, the filter glass may become soiled from
outside. This might be visible in captured images. In such case, the filter glass needs cleaning.
Note
It is strongly recommended to return the cameras to manufacturer for professional cleaning.The
manufacturer is not liable for any damage resulting from cleaning the filter glasses. This even
applies if the following instructions have been observed.
Instructions for cleaning DCx camera filter glasses
The filter glasses can be cleaned only from outside. If remove the filter glasses, the sensor might
become soiled. Thorlabs is not liable for any damage to the sensor resulting from removal of the
filter glasses.
First, remove dirt particles on the glass using compressed air. Do not use compressed air from
compressors or spray cans since it often contains oil droplets or droplets of other liquids. For
best results, use purified nitrogen from nitrogen bottles.
Only use lint-free wipes or cotton-free swabs for cleaning. Never touch the filter glasses with bare
fingers - it's mostly difficult to remove fingerprints completely!
We recommend to use pure alcohol for cleaning. 100% isopropyl alcohol evaporates without
leaving any residues. Only add small quantities of alcohol to the wipe. Never pour alcohol directly
onto the camera.
Attention
Never use cleaning agents containing acetone for cleaning the filter glasses! Acetone may
damage the filter glass coating and may deteriorate the optical quality of the glasses.
Cameras with fixed filter glass
Use a wipe to remove dust particles in a single sweep over the edge of the filter glass (see figure
below).
Cleaning fixed DCx filter glasses
Cameras with replaceable filter glass
Use a wipe to remove dust particles in a circular sweep (see figure below).
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