Research of laser liquid level detection system of mask projection stereolithography
Guangshen Xu · Tianjin Gongye Daxue xuebao · 2013
In order to control accurately the resin liquid level of mask projection stereolithography system,the laser liquid level detection system is designed.According to the measuring principle of laser triangulation,the system chooses the red light semiconductor lasers as the light source and use Position Sensitive Detectors(PSD) to detect liquid level height with the changing signal of reflection flare′s position.The experimental result indicates that in the range of 6 mm,deviation is just 0.34%,which can accurately detect resin liquid surface.