MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202617091240 A) filed by Demax-Holograms Ad on July 27, 2026, for Optical Variable Device.
Inventors include Monovski, Valentin Konstantinov; Ivanovskyi, Andrii Albertovich; and Baldzhiev, Angel Georgiev.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: The invention relates to an optical variable device forming a magnified three-dimensional image of a micro-object with full parallax and contrast inversion effects for protection of goods and documents. It includes a micro-lens diffraction matrix (2) with period P1, center O and at least two cells (5) containing a diffractive micro-lens L modulated by micro-object matrix (3) with period P2#P1 containing at least two micro-objects (4) including regions T1T2 said regions T1 T2 form regions M1, M2 in the micro-lens matrix containing micro-lenses L, L' with centers C, C'. The micro-lens and micro-object matrices have triangular asymmetric relief and (Formula (I). The micro-lenses L, L' have opposite signs of the optical power and/or the distance d, d' between two concentric protrusions of the corresponding micro-lenses L, L' at the boundary between two adjacent regions M1 M2 differ at least twofold, or angle f between (Formula (II) and (Formula (III) is between 45° and 180°.
Disclaimer: Curated by HT Syndication.
