SLSQ-40B-90P 40.0 mm Dia. x 91.2 mm FL; Double-Convex Lens Uncoated

The SLSQ-40B-90P is a high-quality double-convex lens offered by OptoSigma, a renowned vendor in the optical industry. This lens, with a diameter of 40.0 mm, is designed for use in various optical systems that require a convex-convex lens shape.

The lens's geometry is defined by its diameters, thicknesses, and radii. The edge thickness is 2.0 mm, while the center thickness is 6.9 mm, providing a robust structure for precise optical applications. The effective focal length (EFL) is 91.2 mm, and the radii of curvature are r1 = 82.8 mm and r2 = -82.8 mm, ensuring optimal light bending and focusing. The back focal length (BFL) is 88.8 mm, which should be considered when integrating this lens into an optical system.

The lens is made of fused silica (mal-1965), a material known for its excellent optical properties, including high transparency, low auto-fluorescence, and resistance to thermal shock. This material is suitable for use across a wide range of wavelengths, with the item data specifying a wavelength of 546.1 nm.

Notably, this lens is uncoated, which means it does not have any anti-reflective or other surface coatings. While this may result in a slightly lower transmission efficiency compared to coated lenses, it also ensures a broader range of usable wavelengths and simplifies the integration process into existing optical systems.