62-488 12.5 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-50mm VIS 0° 425-675nm

The 62-488 is a 12.5 mm diameter negative achromatic doublet lens, designed and manufactured by Edmund Optics. This lens boasts an effective focal length (EFL) of -50mm, specifically tailored for the visible light spectrum, spanning 425-675nm.

The lens is constructed from two types of high-quality Schott glass: N-BK7 and N-SF5. These materials are renowned for their excellent optical properties, contributing to the lens's high performance. The lens features a standard anti-reflective coating, denoted as 'edm vis-0 std curve', on both the front and back surfaces. This coating enhances the lens's transmission capabilities, reducing unwanted reflections and improving overall light efficiency.

The lens geometry is intricately designed, with a center thickness of 2mm and edge thickness of 4.4mm. The lens's first radius (r1) is -30.83mm, while the second radius (r2) is 23.47mm. The third radius (r3) is a substantial 69.2mm, contributing to the lens's complex optical design.

The lens is available in a multiplet shape, offering versatility and compatibility with various optical systems. The vendor, Edmund Optics, provides a valid web link for this product, indicating its availability in their inventory. This lens is a robust and reliable choice for applications requiring a high-performance, negative achromatic doublet lens.