LA1131-780 N-BK7 Plano-Convex Lens; Dia:1 in; f=50.0 mm 780nm V-Coat

The LA1131-780 is a Plano-Convex lens offered by Thorlabs, a leading global manufacturer of photonics components. This lens, designed for use in the 780nm wavelength range, boasts a focal length of 50.0mm and is constructed from N-BK7 Schott glass, a popular choice for its high refractive index and low dispersion.

The lens has a diameter of 1 inch (25.4mm) and a thickness of 2mm at the edge, increasing to 5.3mm at the center. The front and back surfaces are coated with a broadband anti-reflection coating (tho 780 n-bk7 vc 780), designed to minimize surface reflections and improve transmission.

The lens's geometry is characterized by a radius of curvature of 25.8mm on the curved (convex) surface, resulting in a back focal length of 46.31mm. The lens's shape is spherical, a common choice for its ease of manufacturing and versatility.

This lens is a valuable addition to any optical system requiring a high-quality, broadband anti-reflection coated Plano-Convex lens. It is currently in stock, according to the vendor's website, making it an ideal choice for immediate requirements.