Research on measurement of depth aspheric surface using multifocal lens

Abstract

Deep aspherical surfaces are often testing by computer-generated hologram, this method has a high accuracy, but it is necessary to design a unique computer-generated hologram for a certain asphere to achieve the testing, in order to deal with this problem, this paper proposes to utilize the multifocal lens for the testing of the depth aspherical surface shape.First, the key parameters of the multifocal lens are calculated, second, the simulation experiments of the multifocal lens for testing aspherical surface are carried out, finally, the experiments of aspherical surface are carried out with the multifocal lens. The depth aspherical surface shape testing method proposed in this paper can effectively complete the depth aspherical surface shape testing without limitation of individual compensation.