Determination of paraxial focal length of lens using Strehl definition measurement

摘要

This work describes a method for an experimental determination of a paraxial back focus position and a paraxial focallength of optical systems. It is analyzed an influence of spherical aberration on the value of the measured effective focallength of an optical system and the method is proposed for an elimination of this influence and the determination of theparaxial back focus position and the paraxial focal length of a lens from its effective focal length and the Strehl definitionmeasurements.