Abstract: We propose an application of Particle Swarm Optimization(PSO) in lens design.A mathematical model is constructed and a program code is developed.A fitness function is designed which combined radiuses of curvature,distances between lens surfaces and refractive indices in an optical system.Aberration correction is carried out with this function.An example using PSO is given.It shows that as a computer-aided optical design tools PSO is practical and powerful.It is no longer dependent on initial lens structure and creates arbitrarily search ranges of structure parameters,which is an important step towards automatic design with artificial intelligence.

Key words: lens design, optimization, particle swarm optimization algorithm, fitness function, aberration correction