Optical system design optimization using an analytical figure of merit

摘要

Analytical optical system design optimization implements an optical material selection module (302), a thin lens power calculation module (304), a prescription module (306), a figure of merit determination module (308), a bending adjustment module (310), and a focal length scaling module (312). The optical material selection module (302) selects a set of optical materials that are appropriate for use together in an optical system using the dispersion coefficients of the materials. Potential optical designs are screened according to thin lens power criteria. For each design with acceptable power distribution, a lens prescription is arranged and thickness is added to each lens by the prescription module (306) to provide a thick lens assembly. Designs can then be analyzed according to a figure of merit that evidences optical system performance by the figure of merit determination module (308). In an exemplary embodiment the polychromatic RMS spot radius for each design is analyzed. The thick lens assembly is then adjusted by the bending adjustment module (310). The assembly is adjusted over bending range to identify the degree of bending at which the design is optimized according to the figure of merit. After optimization according to bending and the figure of merit, the focal length of the lens is calculated and the design is scaled by the focal length scaling module (312) so that various designs can be appropriately compared.