菲涅耳透镜俗称螺纹透镜。其基本原理是将普通的透镜分割为众多小棱镜,再展成平面而成。菲涅耳透镜加工技术包括超精加工、微机精密控制、天然金刚石刃磨、光学塑料精密成型等多项技术。此种透镜的材料采用光学塑料,因此,菲涅耳透镜具有体积小、重量轻、成 Fresnel lens commonly known as threaded lens. The basic principle is that the ordinary lens is divided into numerous small prisms, which are then made into a plane. Fresnel lens processing technology, including superfinishing, precision control of the computer, natural diamond sharpening, optical plastic precision molding and many other technologies. The lens material using optical plastic, therefore, Fresnel lens with small size, light weight, into