LB1862 N-BK7 Bi-Convex Lens; Dia:2 in; f=400.0 mm Uncoated

The LB1862 N-BK7 Bi-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading global vendor in the field of optics and photonics. This lens is designed with a bi-convex shape, featuring two spherical surfaces that are both convex, meaning they curve outwards. This design is often employed to achieve specific optical properties, such as a particular focal length or dispersion characteristic.

The lens has a diameter of 2 inches, or 50.8 millimeters, providing a substantial surface area for light transmission. The edge thickness is 3 millimeters, while the center thickness is 4.6 millimeters, contributing to the lens's overall robustness and durability.

The LB1862 lens boasts an effective focal length (EFL) of 400 millimeters, a critical parameter in lens selection. This EFL indicates that the lens will focus light to a point 400 millimeters away from the lens, assuming ideal conditions and a parallel light beam.

The lens is made from N-BK7 glass, a popular material in optical systems due to its excellent optical properties and wide transparency range. This specific lens is uncoated, meaning it does not have any additional layers to enhance its optical performance or protect its surfaces.

The LB1862 lens is currently in stock, according to the vendor's website, and more detailed information can be found at the provided weblink. This lens is a reliable choice for various applications, thanks to its robust construction, high-quality materials, and precise design.