Particle field measurement device based on infrared holography

Abstract

The invention discloses a particle field measurement device based on infrared holography, and belongs to the field of infrared holographic application. The device comprises an infrared laser, an infrared total reflection mirror I, an infrared beam splitting mirror I, an infrared beam splitting mirror II, an infrared total reflection mirror II, an infrared beam splitting mirror III, an infrared beam splitting mirror IV, an infrared total reflection mirror III, an infrared beam splitting mirror V, an infrared CCD I, an infrared CCD II, an infrared beam expanding mirror I, an infrared collimatingmirror I, an infrared beam expanding mirror II, an infrared collimating mirror II, an infrared beam expanding mirror III, an infrared collimating mirror III, an infrared beam expanding mirror IV, aninfrared collimating mirror IV, germanium flat crystal I and the like. The device disclosed by the invention is used for measuring the particle field, and the three-dimensional full-field distributionof the particle field can be recorded under the condition that an object field is not disturbed, so that the information, such as size, shape, position, speed, acceleration and the like, of the particles can be obtained, and the imaging quality and the detection result of the particle field detection are improved.

Description

technical field [0001] The invention discloses a device using infrared holography for particle field measurement, belonging to the field of infrared holography application. Background technique [0002] In the research of fuel combustion, soot measurement, two-phase flow, droplet breakup, environmental pollution and other fields, laser holography is often used to measure the particle field. Its advantage is that it does not interfere with the object field and can record the three-dimensional particle field. The whole field distribution, so as to obtain the particle size, shape, velocity and acceleration and other information. However, in these engineering research fields, liquid droplets and solid particles have high density and small size, which brings certain difficulties to experimental measurement techniques, such as high density affects light transmittance, and small-sized particles are difficult to distinguish. In previous studies on particle fields, due to the limita...

AI Technical Summary

Problems solved by technology

However, it is only at the stage of theoretical research, and the actual particle field exists in three-dimensional space, and a large number of particles block and overlap each other. That is to say, if the experimental method described in its literature is used to detect the real particle field , only the particle field information of a certain front section of the particle field can be obtained, but the real information of other particles covered by the front section cannot be obtained, and the information of most particles in the particle field cannot be obtained

Images