How Operating Conditions Influence ITO Glass Heater Design Choices
https://high-precision-heating.readspirex.com/posts/common-mica-heater-problems-and-practical-troubleshooting-tips
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