SLB-50.8B-300N 50.8 mm Dia. x -299.5 mm FL; Double-Concave Lens Uncoated

The SLB-50.8B-300N is a high-quality double-concave lens, sourced from the reputable optical components manufacturer, OptoSigma. This lens is designed with a base shape of a circle and features a spherical geometry, making it suitable for a wide range of optical applications.

The lens has a diameter of 50.8 mm and a thickness at the edge of 5.1 mm, ensuring durability and stability. The center thickness is 3 mm, contributing to its overall compact design. The effective focal length (EFL) of this lens is -299.5 mm, indicating its double-concave nature. The first radius of curvature (R1) is -311.4 mm, while the second radius of curvature (R2) is 311.4 mm, which are crucial specifications for designing and simulating optical systems.

The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The wavelength for this lens is 546.1 nm, which is within the visible light spectrum. The lens does not come with any coating, offering users the flexibility to apply the coating that best suits their specific application.