The ultrasonic cleaning effect is good, the operation is simple. The sound that people hear is the wave signal of 20 to 20000Hz, which is higher than the sound wave of 20000Hz, which is called ultrasonic wave. The transmission of sound waves is propagated vertically along the sinusoidal curve, producing a large number of small bubbles. One reason is that there is a tension in the liquid, which causes the negative pressure, and the pressure drop makes the gas that is dissolved in the liquid become too saturated, and the liquid escapes from the liquid and becomes a small bubble. Another reason is that strong tensile stress "tears" the liquid into a cavity, called cavitation.

    1. Cleaning after grinding.

    Grinding is an important process in the production of optical glass to determine its processing efficiency and surface quality (appearance and precision). The main pollutants in the grinding process are grinding powder and bitumen. The types of grinding powders are different, generally the alkali metal oxides mainly with cerium dioxide. Depending on the material of the lens and the grinding accur. , different types of grinding powder are selected. The asphalt used in the grinding process is protective to prevent the polished mirror from being scratched or corroded. After grinding, the cleaning equipment can be divided into two types: one is mainly organic solvent cleaning agent, and the other one mainly USES semi-water-based cleaning agent.

    2. Cleaning before coating.

    Cleaning before coating is the main pollutant of the o core oil (also called edge grinding oil, core is also known as the core, core, refers to in order to get the core radius and precision of the rules and choose process), fingerprints, dust, etc. Because the coating process is very strict to the cleanliness of the lens, the choice of cleaning agent is very important. While considering the cleaning ability of some kind of cleaning agent, it is necessary to consider his corrosive and other aspects.