SPERO-CHROMATIC ABERRATION OF HOLOGRAPHIC LENS

Holographic lens is burdened with considerable chromatic aberration. The dependence of the image position on the used light wevelength creates the possibility of using the holo-lens as a spectral device. For this aim the holo-lens recording and imaging geometries should be chosen suitably to minimize the spherical aberration for as wide a range of the light wavelengths as possible. In the paper, the helpful formulae are derived, and their application is illustrated with an example.