11. Lenses and Lens holder
11.5 Cleaning the lens
To m inimize the possibility of damage to optical coatings, or scratches to lens surfaces follow the cleaning
procedure as described here precisely.
Necessary tools
• Compressed air.
• Clean Toraysee® cloth or any micro fiber lens cleaning cloth.
• Clean cotton cloth.
Necessary parts
Lens cleaner (e.g. Carl Zeiss lens cleaner or Puras ol® or any water-based lens cleaner)
How to clean the lens?
1. Blow off dust with c lean compressed air (or pressurized air cans
1
).
2. Clean with lens cleaner together with a clean lens cleaning cloth to r emove the dus t and contam ination. Use bi
g wipes in one
single direction.
Warning: Do not wipe back and forwards ac ross the lens s urface as this tends to grind dirt into the coating.
3. Use a dry lens cleaning c loth to rem ove left liquid or stripes. Polish with small circles.
4. If there are still fingerprints on the sur face, w ipe them off with lens cleaner together with a clean lens cleaning cloth. Polish again
with a dry one.
If smears occur when cleaning lenses, replace the cloth. Smears are the firstindicationofadirtycloth.
1. Pressurized air cans are not efficient if there is too much dust on the surface, the pressure is too low
R5905043 DP2K-12C/11CX 19/02/2018 185
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