Droplet Microscope for Controlling Product Surface Irregularities Based on the Jet-droplet Optical Measurement System

摘要

The article discusses issues related to construction of droplet microscopes based on the jet-droplet optical measurement systems (JDOMS), where a droplet of liquid flying to a product is used as a spherical optical lens to transmit the image of this product's surface. Questions concerning generation of controlled droplet hydraulic flows through the use of induced capillary decomposition of jets primarily based on lubricating and coolant fluid (LCF) and synchronization of the spatial position of a droplet transmitting the surface image of a product accompanied by its registration are discussed. Two types of droplet microscopes and operating modes for controlling the surface irregularities are presented. Issues of image transmission and focal length control using the droplets coalescence of a single or more hydraulic flows are discussed. It was demonstrated that the main advantage of droplet microscopes lies in the open frame design of a high-resolution short-focus optical system, which makes it possible to work with moving objects having the a priori unknown beat amplitude or comparable with the F_(drop) ≈ l_b focus value.