Window films is a polyester based film and is designed to particularly reduce solar heat energy. The materials could range from metals, ceramics and different dyed materials. These window films work by reflecting the solar energy away. Some of the films have a reflective appearance and reflect visible light away. Other films work by reflecting infrared light away. These infrared reducing films block little visible light and add very little reflection to the windows keeping visibility as clear as possible. I bought a uv film for glass
it not only helps in keeping the interior a lot cooler but also protects the glass from shattering. These blast mitigation films will prevent collateral damage caused by the flying glass debris. You could even use solar screen to block out the uv but they are not optically clear to look through and they need to be cleaned periodically which requires removing and reinstalling them.