How Cutouts, Edges, and Openings Affect an ITO Glass Heater Layout
https://thermal-control-guide.unionquill.com/posts/how-polyimide-heater-construction-supports-compact-product-designs
In camera windows, an ITO glass heater must deliver heat in a controlled way. It uses a transparent conductive ITO layer applied to glass. One useful trait is full-surface heating. Still, edge losses can change the result