BICV-FS18 25.4 mm Dia. x -1000 mm FL; Uncoated; Double-Concave Lens

The BICV-FS18 is a high-precision double-concave lens, boasting a diameter of 25.4 mm and a focal length of -1000 mm. This lens is sourced from WTS Photonics, a reputable vendor in the optical industry. The lens is uncoated, offering a clear, unaltered view of the light passing through it.

The lens is designed with a base shape of a circle and features a spherical geometry. The thickness at the edge of the lens is 2.18 mm, while the center thickness is 2 mm. The back focal length (BFL) is 1000.69 mm, and the effective focal length (EFL) is -1000 mm. The first radius of curvature (R1) is -920.48 mm, and the second radius of curvature (R2) is 920.48 mm.

The lens is made from fused silica, specifically from the material ID mal-1965. This material is known for its excellent thermal stability and chemical resistance. The lens is designed to operate at a wavelength of 546.1 nm.

The lens is a double-concave type, meaning it has two concave surfaces. This design is often used to diverge light beams, making it suitable for various applications in optics. The lens is in stock and available for immediate purchase, as indicated by its valid weblink status.