LB11-25-150 25.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-150mm Uncoated

The LB11-25-150 is a high-quality spherical lens from CeNing Optics, featuring a double-concave design with a 25.4 mm diameter. This lens is made from N-BK7, a popular optical glass known for its excellent transparency and low auto-fluorescence. The lens has a center thickness of 2 mm and an effective focal length (EFL) of -150 mm, making it suitable for a wide range of applications that require concave lenses.

The lens's geometry is defined by its first and second radii of curvature, R1 and R2, which are -156 mm and 156 mm respectively. These radii, combined with the lens's diameter and EFL, contribute to the lens's high optical performance. The lens's shape is spherical, which is a common choice for many optical applications due to its ease of manufacturing and high optical quality.

The LB11-25-150 is designed to operate at a wavelength of 546.1 nm. It is uncoated, which means it does not have any anti-reflective or other coatings. While coatings can enhance the performance of optical elements in certain applications, they are not always necessary. The absence of coatings in this lens can make it a more cost-effective choice for applications where coating is not critical.

This lens is currently in stock and can be purchased directly from CeNing Optics. For more information, please refer to the vendor's website.