SLB-50.8B-100NIR2 50.8 mm Dia. x -99.5 mm FL; Coated; Double-Concave Lens 750-1550nm

The SLB-50.8B-100NIR2 is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed for use within the wavelength range of 750-1550nm, is constructed from n-BK7 Schott glass, a popular material known for its excellent optical properties and versatility.

The lens boasts a diameter of 50.8mm and a center thickness of 3mm, providing a substantial surface area for light transmission while maintaining a sleek profile. The edge thickness measures at 9.3mm, ensuring durability and rigidity during operation. The effective focal length (EFL) of this lens is -99.5mm, making it suitable for applications that require strong converging or diverging light paths.

The SLB-50.8B-100NIR2 features a double-concave geometry with radii of curvature of -103.8mm on the front surface and 103.8mm on the rear surface. This particular configuration is ideal for a wide array of applications, including beam shaping, collimation, and imaging. The back focal length (BFL) is -100.5mm, which should be taken into account when integrating this lens into optical systems.

This lens comes equipped with Opto IR2 coating on both the front and back surfaces, enhancing its performance in the near-infrared region. This coating reduces surface reflections, improves transmission, and increases overall system efficiency.