Design of Hybrid (Refractive-Diffractive) Petzval projection lens system

摘要

In this framework, the Refractive elements and the Diffractive element has been combined to explore the uniqueness of two domains into one Hybrid system. It was thus targeted to achromatize the optical system and to reduce the overall weight of the system, by incorporating lesser number of optical components to provide similar system performance using Hybrid optical design method. A 60 mm, f/2 Hybrid Petzval projection system with four components covering a 15° field of view has been presented here. The diffractive surface is introduced on the rear surface of the 3rd lens having 71 zones. The minimum zone size is approximately 2.42274 μm and the total chromatic focal shift is limited to 46.12 μm. Optimization and analysis has been performed on Zemax® and the corresponding results are shown.