https://www.3doptix.com/catalog/optics/lens/optosigma/SLB-40-900PIR2
Optics | Lens | OptoSigma | SLB-40-900PIR2 40.0 mm Dia. x 900.0 mm FL; Coated; Plano-Convex Lens...
"Discover the SLB-40-900PIR2 40.0 mm Dia. x 900.0 mm FL Spherical Lens by OptoSigma. This Plano-Convex lens, coated with Opt IR2 for 750-1550nm, offers a 900mm...