LD1613 N-BK7 Bi-Concave Lens; Dia:25.4 mm; f=-100.0 mm Uncoated

The LD1613 is a high-quality bi-concave lens from Thorlabs, designed with a base shape of a circle and a sub-type of spherical lens. This lens is constructed from N-BK7 glass, a popular material in the optical industry due to its excellent optical properties and versatility. The lens has a diameter of 25.4 mm and a thickness at the edge of 5.6 mm, with a center thickness of 4 mm.

The LD1613 has a focal length (efl) of -100 mm, indicating its diverging nature. The first radius of curvature (r1) is -103.7 mm, and the second radius (r2) is 103.7 mm, demonstrating the lens's concave-concave geometry. The back focal length (bfl) is -101 mm. The lens is uncoated, offering a clear, unaltered view of the light path but without the additional protection and enhanced performance that coatings can provide.

This lens is designed for use with a wavelength of 587.6 nm, making it suitable for a wide range of applications in various fields, including but not limited to, biomedical research, machine vision, and beam shaping. The LD1613 is currently in stock, as indicated by its weblink status, and is ready for immediate use or integration into optical systems.