LA1740 N-BK7 Plano-Convex Lens; Dia:75.0 mm; f=85.0 mm Uncoated

The LA1740 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 75.0 mm, is designed to focus or collimate light beams in various optical systems.

The lens is spherical in shape, featuring a plano-convex design. The base shape is circular, and the lens is uncoated. The radius of curvature for the convex surface is 43.8 mm, and the back focal length is 68.8 mm. The effective focal length (EFL) of the lens is 85.0 mm, which is the distance from the lens's principal plane to the focal point.

The lens is made of N-BK7, a type of borosilicate glass known for its excellent optical properties. This material has a refractive index of approximately 1.5168 at a wavelength of 587.6 nm, making it suitable for a wide range of optical applications.

The lens's geometry includes a thickness of 3 mm at the edge and 24.2 mm at the center. The inner and outer radii are both 0 mm, indicating a flat surface on one side of the lens.

The lens is uncoated, meaning it does not have any anti-reflective or other coatings. While this may result in higher reflective losses, it also means the lens is more versatile and can be used in a wider range of applications without the risk of coating-specific limitations.

According to the vendor's website, the lens is currently in stock, ensuring quick delivery for your optical system needs.