[sdold]

Doesn't the lamp have plastic and rubber parts that would melt or burn?

I had to install baffles in my oven to prevent IR from the oven elements from heating the part directly. The parts were absorbing so much IR heat that it would get too hot on the surfaces that faced the elements. Sometimes the part was 50-70 degrees hotter than the air temp in the oven. Baffles fixed that and now the parts stay at a stable, accurate temp using the temperature of the air convection only.

If I wanted to use an IR lamp to heat the inside of the oven, I might try having it pointed at a metal baffle painted with a hig-temp organic paint on both sides to absorb IR heat and pass it via convection to the air inside the oven. The paint would have to withstand a lote more than the curing temps, my wild guess would be 1000 degrees. Color shouldn't matter as long as it's non-metallic paint.