Fresnel lens

The utility model relates to the technical field of optical lenses, and particularly discloses a Fresnel lens which is characterized in that the Fresnel lens comprises a lens body, one face of the lens body is a light incident face, the light incident face is provided with a plurality of Fresnel rings, the sections of the Fresnel rings are in a zigzag shape, the Fresnel rings are concentrically arranged, and the Fresnel rings are arranged on the lens body. The other face of the lens body is a light-emitting face, the light-emitting face is arranged to be a smooth plane, and the thickness range of the lens body is set to be 0.17-0.2 mm. The thickness of the lens is reduced while the lighting effect is met, so that the requirement that the appearance of a mobile phone is smaller and smaller is met. 本申请涉及光学透镜的技术领域，具体公开了一种菲涅尔透镜，其技术方案要点是：包括透镜本体，所述透镜本体的一面为入光面，所述入光面具有多圈菲涅尔圆环，多圈所述菲涅尔圆环的截面均呈锯齿状，且多圈所述菲涅尔圆环呈同心设置，所述透镜本体的另一面为出光面，所述出光面设置为光滑的平面，所述透镜本体的厚度范围设置为0.17-0.2mm。本申请具有在满足光效的同时，使得透镜的厚度减小，从而适应手机外形越来越小巧的需求的效果。