Design of hybrid diffractive/ refractive optical system by the method of P-W-C

摘要

The structure parameter of hybrid diffractive/refractive optical system has been solved by the method of P-W-C. The primary aberration equation for diffractive system has been deduced. Combination of 3 pieces lenses , the diffractive/ refractive hybrid optical system was designed : No.l and No.3 are common glasses; No.2 is binary optical lenses (BOL). The results show: The Longitudinal Aberration is good in 0.6 and 0.8-0.9 apertures for the lenses. When frequency is 301p/mm, the modulation transfer function (MTF) is close to diffractive limit in 0.5 field angle; the modulation transfer function (MTF) is close to 0.7 in edge field. The design method can be used for diffractive/ refractive hybrid optical system.