L-BCX206 42 mm Dia. Double-Convex Lens; EFL=400mm Uncoated

The L-BCX206 is a high-quality double-convex lens offered by Ross Optical, a renowned vendor in the optical industry. This lens, with a diameter of 42 mm, is designed for use in a variety of optical applications, thanks to its precise geometry and high-quality material construction.

The lens features a large effective focal length (EFL) of 400mm, making it suitable for use in systems that require significant magnification or long-range focus. The double-convex shape, characterized by two convex surfaces, provides a wide field of view and low distortion, making it ideal for imaging applications.

The L-BCX206 is constructed from n-BK7 Schott, a high-grade optical glass known for its excellent optical properties. This material ensures high transmittance across a wide spectrum, making the lens suitable for use with a variety of light sources.

The lens has a center thickness of 3.1 mm and an edge thickness of 2 mm, providing robustness and durability. Despite its robust construction, the lens maintains a high degree of optical precision, with radii of curvature of 412.91 mm for both surfaces.

Notably, this lens is uncoated. While coatings can enhance the performance of lenses by reducing reflections and increasing transmittance, an uncoated lens can be advantageous in certain applications where a natural chromatic dispersion is desired.