Troubleshooting Slow Heat-Up in a Glass Heater System

https://thermal-component-hub.brightsora.com/posts/custom-semiconductor-heater-design-for-complex-thermal-requirements

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