Designing Heating Zones in a Glass Heater for Better Thermal Balance

https://advanced-heating-guide.rivetgarden.com/posts/glass-heater-selection-guide-for-engineers-and-product-developers

In camera windows, a glass heater must deliver heat in a controlled way. It uses a glass panel combined with a conductive heating layer or heater element. One useful trait is anti-fog capability. Still, thermal stress can change the result