Glass Heater Prototyping: What to Review Before Finalizing the Design

https://blogfreely.net/mechalfgxr/how-to-evaluate-thermal-uniformity-when-selecting-a-wafer-heater

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