L-BCX216 50 mm Dia. Double-Convex Lens; EFL=75mm Uncoated

The L-BCX216 is a double-convex lens offered by Ross Optical, boasting a 50 mm diameter and a focal length of 75 mm. This lens is designed for use in a wide range of optical applications, thanks to its spherical geometry and circular base shape.

The lens's geometry is characterized by its diameter, thickness edge, and thickness center. The diameter measures 50 mm, while the thickness edge is 2.5 mm and the thickness center is 11 mm. These dimensions contribute to the lens's overall optical performance and should be carefully considered when integrating it into an optical system.

The L-BCX216 features an effective focal length (EFL) of 75 mm, determined by the curvature of its surfaces. The first surface has a radius of curvature (R1) of 75.6 mm, while the second surface has an R2 of -75.6 mm. These curvatures, in combination with the lens's material, dictate the lens's focusing power.

The lens is made from n-BK7 Schott, a popular optical material known for its excellent optical properties. This material is particularly suitable for applications in the visible spectrum, as indicated by the wavelength of 587.6 nm provided in the item data.

Notably, this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflections, increasing transmission, or providing other desirable optical properties. However, the absence of a coating in this case suggests that the lens is intended for use in applications where such coatings are not required or desirable.