SM05 Lens Sleeve SM05-50D

LBTEK 0.5-inch stackable slotted lens tubes feature side slots, enabling quick and easy assembly of complex optical setups and allowing for adjustment of optical elements without disassembling the device. Multiple optical elements can be mounted within a single lens tube using several retaining rings. First, screw the first retaining ring to the desired depth, place the optical element, and then secure it with a second retaining ring. Optical elements can be manually adjusted through the side slots without the need for a spanner wrench. The lens tubes come with a rotatable sliding cover that can close the tube's slots, preventing stray light from entering the system while keeping the optical setup clean. Each lens tube includes two retaining rings.