SLSQ-25.4-90N 25.4 mm Dia. x -90.0 mm FL; Plano-Concave Lens Uncoated

The SLSQ-25.4-90N is a plano-concave lens with a diameter of 25.4 mm and a focal length of -90.0 mm, making it a negatively powered lens. This lens is sourced from OptoSigma, a renowned vendor in the optical industry, and is fabricated from fused silica, a material known for its excellent optical properties and durability.

The lens's geometry is characterized by its concave shape, with a central thickness of 2 mm and an edge thickness of 4 mm. The inner and outer radii are both 0 mm, indicating a uniform curvature throughout the lens. The back focal length (BFL) is -91.4 mm, slightly longer than the effective focal length (EFL) due to the lens's thickness.

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

The SLSQ-25.4-90N is designed for use at a wavelength of 546.1 nm, although it can be used across a broader spectrum with some loss in performance. It is suitable for various applications, including imaging systems, beam shaping, and laser applications.

For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.