SLSQ-50.8B-90N 50.8 mm Dia. x -89.5 mm FL; Double-Concave Lens Uncoated

OptoSigma's SLSQ-50.8B-90N is a fused silica biconcave lens, uncoated and designed for use in various optical applications. The lens boasts a diameter of 50.8 mm and a center thickness of 3 mm, with an edge thickness of 11 mm, providing a robust and durable structure.

The lens's base shape is circular, and it features a double-concave geometry, with radii of curvature of r1 = -82.8 mm and r2 = 82.8 mm. This geometry results in a back focal length (BFL) of -90.5 mm and an effective focal length (EFL) of -89.5 mm. The lens's design is optimized for a wavelength of 546.1 nm, ensuring optimal performance in its intended application.

The lens is made of fused silica, a material with a high transmission range, low autofluorescence, and excellent thermal shock resistance. This makes the SLSQ-50.8B-90N suitable for use in high-power laser applications and other demanding environments.

Notably, the lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. However, users should be aware that uncoated lenses may have lower transmission and higher reflectance compared to coated lenses.

The SLSQ-50.8B-90N is currently in stock and available for immediate purchase through the OptoSigma website. With its robust design, high-quality materials, and versatile geometry, this lens is an excellent choice for a wide range of optical applications.