The difference between acrylic lens and Fresnel lens

Acrylic lenses, whose bottom plate is PMMA, are also called add-on lenses and add-on lenses by Hongkong people and Taiwan Province people. In fact, it refers to the floorboard of PMMA plate after electroplating. Using plastic lens instead of glass lens has the advantages of light weight, not easy to break, convenient molding and processing, easy to color and so on. Under certain conditions, Fresnel lens has the same function as convex lens (but Fresnel lens is much cheaper and lighter). It focuses the light beam through the interference of light. The Fresnel lens behind the LCD changes the light from divergence to convergence on the LCD, and the Fresnel lens in front of the LCD changes the image passing through the LCD into an enlarged inverted real image and projects it on the big screen.