Fully-automatic optical element cleaning device with ultrasonic-megasonic composite frequency

Abstract

The invention discloses a fully-automatic optical element cleaning device with an ultrasonic-megasonic composite frequency. The ultrasonic-megasonic composite frequency covers low / intermediate / high ultrasonic frequencies and low / intermediate / high megasonic frequencies. Particularly, an appropriate program and process parameters are selected to aim at super-clean washing requirements for an optical element, and pollutants from a micron scale to a nanometer scale on the surface of the optical element can be effectively removed. The fully-automatic optical element cleaning device with the ultrasonic-megasonic composite frequency has the main characteristics that an ultrasonic solution soaking cleaning tank, a megasonic cleaning tank and a spraying tank are designed; different frequency ultrasonic and megasonic waves are adopted, and cleaning requirements from a micron size to a nanometer size are covered; a workpiece is driven by a cylinder to reciprocate up and down in a tank body, a wave node of a standing wave field is prevented from being generated in a fixed area of the surface of the workpiece by virtue of a frequency sweeping function of an ultrasonic-megasonic generator, and the surface damage is avoided; the tank body adopts overflow cycle heating filtration; the total length of an overflow front edge is increased by using a trapezoidal saw-tooth type overflow edge design to obtain uniform and stable overflow; an inclined workpiece clamping device cooperates with an air knife and a slow lifting mechanism to dry the workpiece.

Description

technical field [0001] The invention relates to an ultrasonic-megasonic composite frequency fully automatic cleaning device for optical components, which is especially suitable for ultra-clean cleaning of large-sized, high-precision optical components. The frequency covers low, medium, high and megasonic frequencies and can effectively remove optical components. Organic and inorganic pollutants on the surface of components from micron to nanoscale. Background technique [0002] Modern high-precision optical systems have higher and higher requirements for the cleanliness of the surface of optical components. There are complex pollutants such as oil, particles, and human pollution on the surface of optical components processed by traditional conventional processes. In the development of laser gyroscopes, in order to increase the blocking threshold of the ring cavity, the high reflection plate of the ring cavity is required to have extremely low loss and high reflectivity, and ...

AI Technical Summary

Problems solved by technology

[0013] However, when the traditional chemical solution wet cleaning process and ultrasonic cleaning device are used to clean and dry optical components, due to the limitation of surface tension and viscosity, it is difficult to clean the extremely small particles thoroughly.

In particular, the limitation of ultrasonic frequency in ultrasonic cleaning, with the reduction of the size of pollutants, the cleaning efficiency is greatly reduced, and it is difficult to effectively remove the impact on nano-scale pollutant particles. At present, there is no solution covering the removal of pollution particles from micron to nano-scale. Reports and patents on fully automatic cleaning devices

[0014] In order to solve a series of problems such as the inability of traditional cleaning to clean micron-sized and nano-sized particles at the same time, a large amount of water consumption, and environmental pollution, an ultrasonic-megasonic composite frequency automatic optical element cleaning device was developed to realize the automatic cleaning of optical elements. Cleaning, cleaning tests show that after using this device to clean optical components, it can effectively remove micron-scale and nano-scale pollutants on the surface of the components

Images