We have all seen shimmering mirages on a hot road, or the optical distortions caused by the hot air emerging from an aircraft jet engine. These phenomenons are an example of the Schlieren effect. In classical Schlieren photography is used concave mirror, which reveals technical and economic difficulties. To solve these problems we created optical system that includes: hand-held detector which reveals local fluctuations in the air and mosaic screens formed with retro reflective elements, such as: cube corner retro reflectors or reflective glass spheres that excludes concave mirrors’ difficult setting up process. Thus with our innovation the usage of Schlieren method widened and can be used in: leak detection, study of boundary layer detachment etc.


Marina Gudzhabidze

Dea Ilarionova

Shorena Gudzhabidze