Patent ID: 9562388
Date: 2017-02-07
CPC Classifications: C03C,E06B,G02B,Y10T

Claim:
1. A method of forming from a transparent plate having a surface a polarized pane for a window having a variable transmission, comprising: a) disposing a mask immediately adjacent the surface of the transparent plate, thereby defining an exposed portion of the surface of the transparent plate; b) rotating the plate and the mask together relative to a brushing device that brushes in a single fixed brushing direction; c) contacting the brushing device to the rotating mask and the exposed portion of the transparent plate and brushing the rotating mask and the exposed portion of the transparent plate in the brushing direction; d) during act c), continuously moving the mask over the surface of the transparent plate to reduce a size of the exposed portion until the mask covers the entire exposed portion of the surface of the transparent plate, thereby creating on the surface of the transparent plate a brushed surface having a brushing pattern with at least one period, wherein the brushing pattern varies continuously within each period; and depositing a polarizable material on the brushed surface to form a polarization pattern in the polarizable material substantially following the brushing pattern.