BSW biconcave lens Introduction: A biconvex lens has two inward facing, identical curved surfaces and a negative focal length, which are used to form a reduced image or diverge light. A biconvex lens has a negative focal length, making it most suitable for diverging and converging light beams. A biconvex lens can diverge a collimated beam to a virtual focal point, and is usually used in Galilean beam expanders. Products with coatings have better transmittance. Technical parameters: Materials: optical glass and silicon, germanium, zinc selenide, zinc sulfide, fluoride, sapphire Diameter tolerance:+0/-0.01~+0/-0.1mm Thickness tolerance: ± 0.01~± 0.1mm Face type: λ/ 10~ λ/ 2@632.8nm Finish: 10/5~60/40 Eccentricity:<30 "~3 ' Effective aperture:>90% Chamfer: Coating: antireflective film, bandwidth antireflective film
Introduction: A biconvex lens has two inward facing, identical curved surfaces and a negative focal length, which are used to form a reduced image or diverge light. A biconvex lens has a negative focal length, making it most suitable for diverging and converging light beams. A biconvex lens can diverge a collimated beam to a virtual focal point, and is usually used in Galilean beam expanders. Products with coatings have better transmittance.
