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Cleaning 1
1-15
Cleaning the Lens
Although the lens is coated with a durable, erosion resistant coating (according to MIL
standards), cleaning dust, sand, and other particles might scratch the coating and impair
the performance of the lens.
W Caution
To avoid damage, do not use tools or sharp objects when
cleaning the lens.
• In a clean room, use compressed nitrogen to blow off dust and other particles.
• In a field environment, use a wet cloth to remove sand, salt, and other
contaminants, do not apply pressure.
• Wipe the lens using a soft tissue paper or lens tissue.
You can also use solvents to remove grease and other contaminants:
• Acetone - use to remove grease
• Ethanol - use to remove fingerprints and other contaminants
• Alcohol - use for final cleaning before use
To clean the lens with a solvent:
1. Wet a tissue paper with acetone, ethanol, or alcohol.
2. Carefully, wipe the lens in an “S” motion so that each area of the lens will not be
wiped more than once.
3. Repeat step 2 until the lens is clean. Use a new tissue each time.