LA1255 N-BK7 Plano-Convex Lens; Dia:25.0 mm; f=50.0 mm Uncoated

The LA1255 N-BK7 Plano-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of precision photonics. This lens, with a diameter of 25.0 mm, is designed for use in a wide range of optical systems, offering a focal length of 50.0 mm.

The lens is made from N-BK7, a popular glass type known for its excellent optical properties. This material, also known as Schott glass, is characterized by a low refractive index and low dispersion, making it ideal for a broad spectrum of applications, including laser systems and imaging applications.

The Plano-Convex design of this lens features a flat surface on one side and a curved surface on the other. This design is often used to collimate or focus light, making it a versatile choice for many optical setups. The geometry of the lens includes a thickness of 2.07 mm at the edge and 5.3 mm at the center, providing a solid and robust structure.

The effective focal length (EFL) of this lens is 50.0 mm, a value that determines the distance at which an object must be placed to form a sharp image. The radius of curvature (R1) is 25.8 mm, and the back focal length (BFL) is 46.6 mm. The lens does not have any coating, which means it is uncoated. However, coatings can be added to enhance the lens's performance, such as improving its transmission, reducing reflections, or increasing its damage threshold.