SLB-40B-70PM 40.0 mm Dia. x 71.3 mm FL; Coated; Double-Convex Lens 400-700nm

The SLB-40B-70PM is a high-quality spherical lens, boasting a convex-convex base shape and a circular design. This lens, sourced from the reputable vendor OptoSigma, is specifically designed for use within the wavelength range of 400-700nm, making it suitable for a wide array of optical applications.

The lens has a diameter of 40.0 mm and a focal length of 71.3 mm, providing a substantial effective focal length (EFL) for various optical systems. The edge thickness of the lens measures 2.0 mm, while the center thickness is 7.6 mm, offering a robust and durable construction. The radii of curvature for the first and second surfaces are 72.66 mm and -72.66 mm, respectively, ensuring optimal light refraction and focusing capabilities.

The SLB-40B-70PM is crafted from the renowned material n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties, including low dispersion and high homogeneity. This material ensures reliable and precise light transmission, making the lens suitable for use in imaging, beam shaping, and other optical systems.

The lens features a broadband anti-reflection coating on both the front and back surfaces, specifically designed for the wavelength range of 400-700nm. This coating significantly reduces surface reflections, enhancing overall transmission and minimizing unwanted light loss. The coating also provides protection against environmental factors, ensuring longevity and durability for the lens.