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damage or serious pollution, please replace the lenses in time. It is recommended to check and clean the lenses
before starting the equipment every day.
The polluted lens may cause the following consequences:
1. Effective power of the laser beam is reduced, and power loss is increased; output power is unstable;
2. Excursion of laser beam focus;
3. In case of serous pollution, the focusing lens may be broken down or burn damage to plating layer
causing absolute malfunction.
Any bonding material will increase the absorption rate of the lens and reduce the service life. Therefore,
please take the following preventive measures to prevent damage and contamination to the lens in the process of
placing, installing and cleaning the lens:
1. Do not use suction equipment or inflatable devices to avoid scratching the lens surface;
2. Do not contact with the film directly with tools or human body when take the lens; use lens cleaning
paper to isolate the tool or human body and grip the edge of the lens;
3. Do not clean the optical lenses with water or detergent. The surface of the lens is coated with a special
membrane, and these materials will damage the surface of the lens
4. When installing or replacing the reflector or focusing lens, do not apply too much pressure, or else it will
cause lens deformation, thus affecting the quality of the beam;
5. The lens should be tested and cleaned in dry and clean places. The surface of a good console should
have several layers of clean non-woven fabric or lens cleaning paper;
6. The operator should avoid sweat or breathing gas contacting reflective surface of the lens, and keep
other potential contaminants away from the work environment.
Correct cleaning method
The purpose of cleaning the lens is to clear the existing pollutants of the lens and avoid causing further
pollution and damage to the lens. To achieve this purpose, please follow the steps below:
First, blow off the floats from the surface of the lens with air ball, in particular the small particles and
flocculation attached to the lens surface. This step is necessary. However, do not use compressed air, because the
air contains oil mist and water spray, which will deepen the pollution of the lens.
Secondly, clean the lens with acetone or ethanol. In well-lit environment, dip the lens cleaning paper or
absorbent stick in acetone or ethanol, press the lens cleaning paper or cotton stick gently on the clean lens and
carry out circular spiral motion from the lens center to the edge. The cleaning action must be done in one time.
After cleaning, place the cleaned lens in the light to check if it is cleaned. If necessary, repeat the cleaning
operation until the lens is clean.
Certainly, some pollution and lens damage cannot be removed by cleaning, e.g. film burn by dirt, film peeling
off by dew or condensate water. To recover its good performance, the only way is to replace the lens.
The focusing lens is vulnerable and valuable. Follow the steps shown in the figure below during the cleaning
process:
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