Primary Aberrations of Embedded Diffractive Lens

摘要

An embedded diffractive lens can be formed by two diffract ive lenses on finite substrates with their matching diffractive profiles in contact. An analytical treatment pertinent to the study of primary aberrational characteristics of an embedded diffractive lens is presented. We take resort to the well known Sweatt Model within the framework of thin lens aberration theory for tackling the case of unequal object and image spaces. The variations of the primary aberrations with various design parameters viz. substrate curvature, optical characteristics of the substrates and the conjugate positions are illustrated.