DEVICE FOR TRANSFORMING IMAGES IN VISIBLE AND ADJACENT INFRARED PARTS OF SPECTRUM Russian patent published in 2008 - IPC G02F1/00 

FIELD: optics and electronics.

SUBSTANCE: transformer is characterized by presence of a dielectric substrate, on front side the substrate is covered by aluminum mirror, upon which positioned serially are working layer of VO₂ and external protective dielectric layer, where working layer of VO₂ contains oxide layers: surface layer of V₂O₅ and lower layer of V₃O₅, V₂O₃, VO, with percent ratio of aforementioned layers represented by following values of parts of their total: V₂O₅ - 5%, VO₂ - 75%,_{V3O5, V2O3, VO - 20% respectively, and optical thicknesses of layers of film structure with refraction coefficients corresponding to aforementioned layers are subject to expressions: n1d1=n2d2=0,27 and n3d3=0,0115 where n1=1,38...1,69, n2=2,35, n3=1,15 - refraction characteristics of protective layer, oxide layer of vanadium, aluminum mirror respectively, and d1,d2,d3 - thicknesses of film layers of structure, in micrometers.}

EFFECT: increased brightness contrast of image, preserved diffraction efficiency in adjacent infrared part of spectrum and ensured capacity for operation under conditions of influence of external environmental factors.

5 dwg, 1 tbl