Collimating Lenses
Fiber Optic Collimating Lenses, Filters, and Accessories
Collimating lenses use a high performance optical element (lens) manufactured using research-grade synthetic fused silica or sapphire that has excellent transmission characteristics and higher operating temperatures than other elements.
Collimator lenses come set to standard effective focal length distances. However, a means of adjustment is built into the body to allow precision adjustments.