SLSQ-15B-25N 15.0 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-15B-25N is a high-quality, double-concave lens offered by OptoSigma. This lens, with a diameter of 15.0 mm, is designed for use in a wide range of optical applications. The lens features a base shape of a circle, with a thickness of 4.5 mm at the edge and 2 mm at the center, providing a robust and durable structure.

The SLSQ-15B-25N has an effective focal length (EFL) of -24.7 mm, making it suitable for use in systems requiring strong negative magnification. The radii of curvature for this lens are -23 mm for the first surface and 23 mm for the second, contributing to its double-concave design. The back focal length (BFL) of this lens is -25.3 mm.

This lens is made from fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock. The material ID for this lens is fused sil mal-1965, indicating its specific type of fused silica.

The SLSQ-15B-25N is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, this lens is still suitable for many applications, particularly where high transmission and low reflectivity are not critical.

The lens is designed for use at a wavelength of 546.1 nm, making it suitable for applications that use this wavelength, such as certain types of fluorescence microscopy.