Hangzhou Shalom Electro-optics Technology Co., Ltd. Dia25.4mm EFL60mm N-BK7 Biconvex Lenses Uncoated 1107-019

Features: • The double-convex shape is most suitable for finite conjugate ratios between 1:5 and 5:1. • A large collection of stocked biconvex lenses with focal lengths up to 1000nm • Made from N-BK7 (excellent transmission from visible to the NIR region) • Standardized focal lengths and diameters convenient for OEM • Various coating options: uncoated, 350-650 nm/650-1050 nm/1050-1580 nm BBAR, or custom • Applications: lasers, microscopes, projectors. cameras and other imaging instruments Descriptions: N-BK7 is a kind of optical glass often used for manufacturing optical components, including lenses. N-BK7 glass is known for its low cost, high optical transmission across the visible < and into the near-infrared region (350-2200nm), low dispersion, high hardness and resistance to scratches and abrasions, and the ability to withstand changes in temperature without significant expansion or contraction. It belongs to the Schott glass catalog, and is one of the most common optical glass materials. This page features Shalom EO‘s Stocked N-BK7 Biconvex Lenses. Within our stock list, a wide range of focal lengths of 10-1000mm and diameters of 6.0-50.8mm are available. You can find our Stocked UV Fused Silica Biconvex Lenses on another page. Custom biconvex lenses made from BaF2, CaF2, MgF2, Ge, ZnSe, Sapphire, and other optical materials are also procurable upon your request. The original transmission range of uncoated N-BK7 is 350-2200mm, with an absorption dip positioned at around 2.8 microns. To further enhance the transmission of the N-BK7 double convex lens, Broadband Anti-reflection (BBAR) coatings could be furnished to accommodate the requirements for multi-wavelength and tunable lasers. Besides the uncoated versions, we also provide standard N-BK7 double convex lenses with three kinds of broadband AR coatings: 350-650nm, 650-1050 nm, and 1050-1580 nm to increase the transmission and elevate the efficiencies of utilization.