LB11-12-40 12.7 mm Dia. N-BK7 Double-Concave Lens; EFL=-40mm Uncoated

The LB11-12-40 is a high-quality spherical lens from CeNing Optics, featuring a base shape of Circular and a Sub Type of Spherical Lens (Concave-Concave). This lens is designed for use with a wavelength of 546.1 nm, making it suitable for a wide range of optical applications.

The lens has a diameter of 12.7 mm and a center thickness of 2 mm, providing a compact and efficient design. The effective focal length (EFL) of the lens is -40 mm, indicating its concave-concave nature. The first radius of curvature (R1) is -41.88 mm, while the second radius (R2) is 41.88 mm, contributing to its double-concave structure.

The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and high damage threshold. This material is widely used in various optical systems due to its low dispersion and high homogeneity.

Notably, this lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. However, it's essential to consider that uncoated lenses may have lower transmission and are more susceptible to environmental factors such as dust and moisture.

The item data indicates that this lens is in stock and available for immediate purchase. For more information, users can refer to the provided weblink, which leads to the product page on the vendor's website.