解光具组合问题的一般思路是逐个按单光具成像分析.单光具成像主要有:(1)平面镜:物像关于镜面对称;(2)球面镜:1/u+1/v=1/f=2/R(凹镜f取正,凸镜f取负;实物u取正,虚物u取负;实像v为正,虚像v为负);(3)平面折射:v=nu(适用于近似垂直入射,真空中的物经折射率为n的平面成像); The general idea of ​​the solution to the problem of combination of optical tools is to perform single-vision imaging analysis one by one. Single-vision imaging includes: (1) Plane mirror: symmetry of the object on the mirror surface; (2) Spherical mirror: 1/u+1/v=1/ f = 2/R (the concave mirror f is positive, the convex mirror f is negative; the physical object u is positive, the virtual object u is negative; the real image v is positive, the virtual image v is negative); (3) plane refraction: v=nu ( Applicable to approximately normal incidence, vacuum in the plane of the object through the refractive index n));