Aspherical microlenses have excellent optical properties.To fabricate aspheric mini and micro lens by droplet method,a laminar flow model of droplet was built in COMSOL,based on the two-phase flow principle of fluid dynamics,the velocity and pressure distributions of both sessile and pendant droplets at different volumes were calculated,and the stable profile was then obtained.Combined with experiments,the influence of the volume force on the conic coefficient K and other geometrical parameters of the lens profile obtained by the cured droplet is investigated.The result shows that the calculation and experiment have a good consistency.The sessile drop lens has a profile of flat ellipsoid with a positive K,while the K value of the inverted droplet lens is negative,and the profile is verging to hyperboloid as the droplet volume increases.Meanwhile,the pendant droplet lens not only has smaller vertex curvature radius and bottom diameter,but the RMS values of the focal spot are respectively 36% and 45% lower than that of the sessile droplet lens at close volumes (V=1.6 and 2.4 μL).The pendant droplet lenses at larger volumes has better imaging performance.Therefore,aspherical lenses produced by inverted droplets have smaller focal spots and excellent imaging properties.