Micro lenses are specially designed with special material and profile for collimator used in fiber optics. This Micro lenses can transform the light from single mode fiber into a collimating beam in lower loss. In reverse, Micro lenses also can as a coupler from collimating beam into fiber. Micro lenses can be designed for collimator at different working distance, particularly at long working distance. AZURE only provide to manufacture micro lenses on custom designing herself.