The SLB-25-80NIR1 is a Plano-Concave Spherical Lens, 25.0 mm in diameter and featuring a focal length of -80.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-bk7 schott, a high-quality material known for its excellent optical properties.
The lens's geometry is meticulously designed, with a thickness edge of 3.9 mm and a thickness center of 2 mm. The effective focal length (EFL) is -80.0 mm, and the radius of curvature (R1) is -41.52 mm. The back focal length (BFL) is -81.3 mm, and both the inner and outer radii are 0 mm.
This lens is designed to work optimally with a wavelength of 546.1 nm. It comes with a coating on both the front and back, specifically an opt ir1 coating, which enhances its performance in the 633-1064nm spectral range.