Optical blank for fabricating e.g. ocular glass, has set of cells of several sizes, where size is measured parallel to blank surface and varied between different locations of surfaces, and each cell is hermetically sealed

摘要

The optical blank (10) has a set of cells (15) juxtaposed in parallel to a blank surface, where each cell is hermetically sealed and contains a substance with an optical property. The set comprises cells of several sizes, where size of the cells is measured parallel to the surface and varied between different locations of the surface. The cells in a central zone of the surface have dimension greater than 0.5 millimeters and the cells in a peripheral zone of the surface have dimension lower than 100 micrometers. An independent claim is also included for an ocular glass.