SLB-15-40N 15.0 mm Dia. x -40.0 mm FL; Plano-Concave Lens Uncoated

The SLB-15-40N is a Plano-Concave Lens with a 15.0 mm diameter and a focal length of -40.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence.

The lens geometry includes a thickness edge of 3.4 mm and a thickness center of 2 mm. The inner and outer radii are 0 mm, indicating a flat surface on one side and a concave surface on the other. The radius of curvature (R1) is -20.76 mm, and the back focal length (BFL) is -41.3 mm.

This lens is uncoated, which means it does not have any anti-reflective or other surface coatings. While this may result in higher reflective losses, it also means that the lens can be used in a wider range of wavelengths without the risk of coating damage.

The lens is in stock and can be purchased directly from the vendor's website. It is suitable for various applications, including imaging systems, beam shaping, and laser applications. Please ensure that it meets your specific requirements before purchasing.