SLB-50.8B-150NM 50.8 mm Dia. x -149.5 mm FL; Coated; Double-Concave Lens 400-700nm

The SLB-50.8B-150NM is a high-quality double-concave lens, designed with a base shape of a circle, and a diameter of 50.8 mm. This lens is sourced from the reputable vendor, OptoSigma, and is available for purchase on their official website. The lens is currently in stock, ready for immediate use or shipment.

The lens features a significant thickness at the edge, measuring 7.2 mm, and a reduced thickness at the center, measuring 3 mm. This design ensures optimal light refraction and minimizes distortion. The effective focal length (EFL) of the lens is -149.5 mm, making it suitable for a wide range of optical applications.

The SLB-50.8B-150NM is made from the high-quality material, n-bk7 schott, which is known for its excellent optical properties. This material is often used in precision optical systems due to its low auto-fluorescence, high homogeneity, and excellent transmission in the visible spectrum.

The lens is coated with an opt m coating on both the front and back surfaces. This coating enhances the lens's performance by reducing surface reflections and increasing transmission. The wavelength for this coating is 546.1 nm, which falls within the visible light spectrum.

The lens's geometry is spherical, with both surfaces curved inward. The first surface has a radius of curvature of -155.7 mm, while the second surface has a radius of curvature of 155.7 mm. This double-concave design helps to diverge light, making it ideal for use in applications such as beam expansion or collimation.