45-010 6.0mm Dia. x -18 FL; Uncoated; Plano-Concave Lens

The 45-010 is a 6.0mm diameter, plano-concave lens with a focal length of -18mm, sourced from the reputable optical vendor, Edmund Optics. This lens is designed for use in optical systems that require a concave element, and its uncoated surface ensures high light transmission while potentially introducing some spherical aberration.

The lens's geometry includes a 2.4mm thickness at the edge and a 2mm thickness at the center, with an inner radius of 0mm and an outer radius of 0mm. The back focal length (BFL) is -19.32mm, and the radius of curvature (R1) is -9.3mm. The lens is made of N-BK7 Schott glass, a popular choice for its high homogeneity, low auto-fluorescence, and excellent transmittance in the visible spectrum.

This lens is designed to work at a wavelength of 587.6nm, making it suitable for applications such as microscopy, beam shaping, or laser systems in this spectral region. The lens's spherical shape ensures ease of alignment and integration into optical systems, while its uncoated surface allows for maximum light transmission without additional cost or complexity.

Please note that the lens's uncoated surface may introduce some chromatic aberration and spherical aberration, which could affect the performance of the optical system. However, these aberrations can be corrected with appropriate design considerations or additional optical elements.