Testing Temperature Uniformity Across a Glass Heater Surface

https://high-precision-heating.lumenforgex.com/posts/mica-heater-basics-understanding-high-temperature-surface-heating

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