TECHSPEC® C-Mount Achromatic Pairs are designed to be easily integrated into a variety of OEM applications. TECHSPEC C-Mount Achromatic Pairs utilize an integrated iris to allow for user adjustment of numerical aperture and depth of focus. Each lens has been oriented for maximum system performance. The aluminum housing removes the risks associated with handling loose optics. Broadband visible coated lenses provide high transmission and low reflection loss over wide spectral regions.