A Practical OEM Checklist for Specifying a Glass Heater

https://industrial-heater-lab.theglensecret.com/ito-glass-heater-technology-explained-for-engineers-and-designers

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