SLB-10B-10N 10.0 mm Dia. x -9.7 mm FL; Double-Concave Lens Uncoated

The SLB-10B-10N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed with a base shape of a circle, is constructed from n-BK7 Schott, a popular material known for its excellent optical properties.

The lens features a diameter of 10.0 mm and a thickness at the edge of 4.6 mm, providing a robust structure. The center thickness is 2.0 mm, contributing to its overall compact design. The effective focal length (EFL) of this lens is -9.7 mm, making it suitable for applications that require a negative focal length.

The first radius of curvature (R1) is -10.38 mm, and the second radius of curvature (R2) is 10.38 mm, indicating a symmetrical double-concave design. The back focal length (BFL) is -10.3 mm, which is crucial for determining the lens's position in an optical system.

This lens is uncoated, which means it does not have any anti-reflective or other surface coatings. While this may result in a higher reflectivity, it also means that the lens is more cost-effective and versatile, as it can be used in a wide range of wavelengths without the risk of coating interference.

The lens is designed for use at a wavelength of 546.1 nm, making it suitable for applications that use this common visible light wavelength. It is important to note that the performance of the lens can vary depending on the specific conditions of its use, including the alignment, the surrounding optical elements, and the overall design of the optical system.