The Principle and Advantages of Fresnel ALR Projection Screen Fresnel ALR projection screen is a high-performance projection screen specially designed for ultra-short-focus projectors. It can effectively resist the interference of ambient light, improve the clarity and contrast of the picture, and bring users a shocking visual experience. This article will introduce the characteristics and advantages of Fresnel anti-light projection screen from the aspects of principle, difference from other traditional projection screens, application scenarios, color reproduction, contrast, etc.