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Method D: Aggressive Cleaning  (Spatter)

 

Attention: This method is to be used only after trying methods A, B, C

In the event that you have completed steps A and B and the optic element is still contaminated please contact your local Ophir Dealer for further instructions.  

 

Condition of lens:

Deteriorated performance and severe signs of contamination     

The aggressive cleaning will usually be needed due to heavy usage of the lens. However, certain types of contamination cannot be removed and require replacing the optic element.       

    

Cleaning method :

This method might erode the surface of the optics. If a change of surface color is noticeable stop polishing immediately.

1. Use a new clean cotton ball or cotton swab.

2. Dampen cotton with polishing compound (about 5 drops).

3. Gently and briefly wipe optics in "S" motion. Avoid pressing down the cotton or scrubbing the surface.

4. Wet a new cotton ball or swab with Propanol / Ethanol. Gently but thoroughly swab the surface (do not allow it to dry).

5. Examine the surface under light in front of black background. Remove remaining residue by repeating step 4 until surface is clean.