Optical elements containing semitransparent wavelike filmsстатья
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Дата последнего поиска статьи во внешних источниках: 9 апреля 2021 г.
Аннотация:Novel optical elements containing semitransparent wavelike films embedded into the bulk of transparentmaterial, which form a reflection image without transmitted light distortion, are studied. The dynamic theoryof light diffraction by a locally periodic multilayer semitransparent wavelike film is developed. A simple analyticalformula for near Bragg diffraction order intensity is obtained for the case when only one diffraction order lieswithin the hologram angular selectivity. The phase modulation of light transmitted through the optical elementcontaining wavelike films is estimated for single-layer and multilayer wavelike films with an arbitrary shape ofsurface. The restrictions on the structure parameters for which transmitted light distortions would be negligibleare obtained. A new type of high-quality color hologram is proposed and shown to be feasible by calculation ofhologram diffraction efficiency and spectral selectivity for three colors. Other possible applications, such as monochromeand color head-up and head-mounted displays, and imaging on spectacle lenses, are discussed.