摘要
探讨了光学系统杂光分析方法,[提出了鬼像判别依据,在修改小镜面散射理论中几何遮挡因子(Geometrical Masking-shadowing Factor)基础上,抽象出光学系统中表面粗糙度σ_m/λ≥1.0,的表面双向反射分布函数(BRDF)模型,同时应用矢量微扰理论给出表面粗糙度σ_m/λ<<1.0的 BRDF 模型。
In this paper,we discuss the techniques of stray light analy- sis in optical system when the ghost image happens.In the meantime, two different surface theories are given,they can describe surface scattering character ics,which are typical in optical system.The first is correctly accounting for shadowing-masking,which based on mirror-like facets reflection theory,with surface roughness small compare to wavelength.The second is a rigorous theory which is based on vector—perturbation theory.Then,the utili- ty of these two models of stray light calculations is discussed.
出处
《光学机械》
CSCD
1992年第2期1-5,共5页
