SLB-40-60N 40.0 mm Dia. x -60.0 mm FL; Plano-Concave Lens Uncoated

The SLB-40-60N is a Plano-Concave Lens, part of the Spherical Lens family, sourced from OptoSigma. This lens is uncoated and features a base shape of Circular. The lens has a diameter of 40.0 mm and a thickness edge of 9.3 mm, with a thickness center of 2.0 mm. The Effective Focal Length (EFL) is -60.0 mm, and the Radius of Curvature (R1) is -31.14 mm. The Back Focal Length (BFL) is -61.3 mm, and the lens does not have an Inner Radius or Outer Radius.

The lens is made of n-bk7 schott material, a popular choice for its high refractive index and low dispersion. It is designed to operate at a wavelength of 546.1 nm. The lens's geometry is spherical, a common shape for optical lenses due to its ease of manufacturing and high optical quality.

The lens is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. This can lead to unwanted reflections and reduced transmission, but it also means the lens is more cost-effective and easier to clean.

The lens is currently in stock and can be purchased directly from the vendor's website. The provided weblink is valid and leads to the product page for this specific lens.