SLB-50.8B-90PM 50.8 mm Dia. x 91.6 mm FL; Coated; Double-Convex Lens 400-700nm

This is a high-quality spherical lens, specifically a double-convex lens, sourced from OptoSigma. It is designed for use within the wavelength range of 400-700nm, making it suitable for a wide range of optical applications.

The lens has a diameter of 50.8mm and a focal length of 91.6mm, providing a substantial effective focal length (EFL) for various optical configurations. The edge thickness of the lens is 2.8mm, while the center thickness is 9.8mm, offering a robust and durable design.

The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. This makes it an ideal choice for various applications, including imaging, beam shaping, and laser systems.

The lens features a coating on both the front and back surfaces, specifically an opt M coating. This coating enhances the lens's performance by reducing surface reflections, thereby increasing transmission and improving overall system efficiency.

The lens's geometry, including its inner and outer radii, is optimized for spherical surfaces, ensuring high-quality imaging and minimal aberrations. The lens is circular in shape, providing versatility in its application.