MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202418013240 A) filed by Carl Zeiss AG; and Carl Zeiss Vision International Gmbh on February 23, 2024, for Method And Device And Computer Program For Determining A Representation Of A Spectacle Lens Edge.
Inventors include Nieuwenhuis, Claudia; and Schwarz, Oliver.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: The invention relates to a computer-implemented method for determining the representation of the edge (26) of a spectacle lens (28) or of a left spectacle lens (28) and of a right spectacle lens (29) for a spectacle frame (20). According to the invention, the following steps are carried out: providing image data b(x) for the spectacle frame (20) with a worn frame front (24); calculating information data I(x) derived from the image data b(x); calculating a deterministically optimisable cost function E(u) which links the information data I(x) to spectacle lens data u(x), the spectacle lens data u(x) describing the spatial extent of at least one spectacle lens (28) held in the frame front (24); and defining a contour of an edge (26) of the spectacle lens (28) or of the left spectacle lens (28) and of the right spectacle lens (29) by optimising the cost function E(u).
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