Ø18.0 mm N-BK7 Uncoated Plano-Convex Lenses f=20mm

The Uncoated Plano-Convex Lenses are fabricated from RoHS-compliant N-BK7 glass. N-BK7 is typically chosen whenever the additional benefits of UV fused silica (i.e., good transmission further into the UV and a lower coefficient of thermal expansion) are not necessary. They have a positive focal length and near-best-form shape for infinite and finite conjugate applications.

Features

• Material: N-BK7
• Wavelength Range: 350 nm - 2.0 μm (Uncoated)
• Available Uncoated (Below) or with One of Five Broadband Antireflection Coatings
• Focal Lengths 20 mm