Fineshut SP is a light-absorbing polyurethane foam sheet originally developed by our parent company that stably absorbs both visible and infrared light ranges. It combines
excellent optical properties with an amazing thinness of roughly 0.22 mm. Our Fineshut SP Foam has a long track record of high performance and reliability that can withstand mass
production. It has been primarily used for stray light prevention in the mirror boxes of industry-leading single-lens reflex cameras.