QUANTIZATION RESEARCH FOR NON-FRINGE SCHLIEREN TECHNIQUE

摘要

This paper describes the principle of the non-fringe schlieren techniques, that is the radial varying density filter (RVDF) for the cutoff mask and the square array of color bands (SACB) for the source mask. The results that the photographic density of the image of the RVDF technique shows the deflection magnitude of the emitted light rays and the color of the element on the image of the SACB technique shows the deflection magnitude and direction of the emitted light rays are obtained by theoretical analysis and experiments.