Correct handling and cleaning is essential to ensure the proper performance and longevity of optical components. Contaminants such as dust, water and process by-products can increase scattering and absorption or cause defects. Therefore, optical elements should be stored in the appropriate packaging materials and only unpacked in clean environments. Special gloves should be worn to avoid fingerprints on optical surfaces and the associated damage caused by grease. In the case of very small optics, the use of tweezers on the mount can also be helpful. However, care should be taken to avoid scratching optical surfaces.
If dirt is visible on the outer surfaces of a lens or a lens, it can be removed by following a few simple tips: Dust can be blown away with purified air. If dust still remains after such treatment, wiping with special cleaning cloths designed for this purpose is recommended. If necessary, these can also be moistened with acetone to further increase cleanability and prevent streaking. In the case of coarse soiling, treatment with distilled water mixed with an optical cleaning agent may also be necessary. This should then be rinsed off with distilled water and alcohol.
Independent disassembly of a lens will invalidate the warranty and should only be carried out by the manufacturer.