LF1097 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-200mm Uncoated

The LF1097 is a spherical lens with a concave-convex base shape and a circular geometry, sourced from the reputable vendor Thorlabs. This lens boasts a diameter of 25.4 mm and a center thickness of 3 mm, with an edge thickness of 3.8 mm. The effective focal length (EFL) of this lens is -200 mm, making it a negative meniscus lens.

The lens is crafted from n-BK7 Schott glass, a popular material known for its excellent optical properties. The radii of curvature for this lens are r1 = 100 mm and r2 = 50.2 mm, contributing to its unique optical characteristics. The back focal length (BFL) of this lens is -197.3 mm.

Notably, this lens is uncoated, which means it does not have any anti-reflective or other coatings applied to its surfaces. This may affect its performance in certain applications, particularly those involving high-intensity light sources or specific wavelength ranges.

The lens is designed to operate at a wavelength of 587.6 nm. It is important to note that the performance of the lens can vary depending on the wavelength of the light it is intended to focus. Therefore, users should ensure that this lens is suitable for their specific application.