Analytical and comprehensive optimization design for multilayer diffractive optical elements in infrared dual band

Design of Ultra-High-Aperture Dual-Range Athermal Infrared Objectives

“…Next, we discuss the issues of the microstructure composition and the calculation of the DE DOE for a refractive-diffractive objective. In the last five years alone, around ten papers that have been devoted to these issues have been published (for example, [19,[33][34][35][36]). All of these works are based on the scalar theory of diffraction.…”

“…Its reliefs are made on the flat surfaces of the material substrates, which differ in their dispersion properties. Usually it is a pair of crownand flint-like optical materials [9,[17][18][19].…”

“…Its reliefs ar made on the flat surfaces of the material substrates, which differ in their dispersion prop erties. Usually it is a pair of crown-and flint-like optical materials [9,[17][18][19]. The choice of the best pair of optical materials for the microstructure and the assessment of the optimal depth of the microstructure reliefs clearly depends on the choice of an appropriate criterion.…”

Design and application of diffractive optical element: a review

“…In order to meet the needs of optical systems in wide spectral band applications, the morphology of DOE has been extended to double or even multiple layers, introducing the height and material of each layer as additional variables to bring new degrees of freedom to DOE design. Zhang et al [51] proposed a class of medium wave infrared and long wave infrared dual frequency zoom lenses based on Multi Layer Diffractive Optical Element (MLDOE). A hybrid dual band infrared zoom lens with simple structure and color difference correction was obtained by reasonably selecting substrate materials.…”