SLB-50.8-90NM 50.8 mm Dia. x -90.0 mm FL; Coated; Plano-Concave Lens 400-700nm

OptoSigma presents the SLB-50.8-90NM, a Plano-Concave Spherical Lens designed with a 50.8 mm diameter and a focal length of -90.0 mm. This lens is specifically coated for use within the wavelength range of 400-700nm, making it an ideal choice for applications such as imaging systems, beam shaping, and other optical instrumentation.

The lens is fabricated from the renowned N-BK7 glass from Schott, a material known for its excellent optical properties, including high transparency and low auto-fluorescence. The plano-concave geometry of the lens, with a center thickness of 3 mm and an edge thickness of 10.5 mm, ensures the desired negative focal length and low spherical aberration.

The front and back surfaces of the lens are coated with Opt M, a versatile coating that enhances the overall performance of the lens by minimizing surface reflections and improving transmission within the specified wavelength range. The coating also provides protection against environmental factors, ensuring the longevity and reliability of the lens in various applications.