L-BCC028 12.7 mm Dia. Double-Concave Lens; EFL=-75mm Uncoated

The L-BCC028 is a spherical lens with a base shape of circle, sourced from the renowned vendor Ross Optical. This lens falls under the category of concave-concave or bi-concave lenses, making it suitable for applications that require light bending and dispersion.

The lens has a diameter of 12.7 mm and a thickness of 2.92 mm at the edge, reducing to 2.5 mm at the center. The effective focal length (EFL) is -75 mm, indicating that it is a negative lens, which means it diverges light rays. This property makes it ideal for use in applications such as cameras, projectors, and other optical systems where light needs to be spread out.

The lens is made of n-BK7 Schott material, a high-quality optical glass known for its excellent transparency and low auto-fluorescence. This material is widely used in various optical applications, including laser systems, beam expanders, and high-power applications.

The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, uncoated lenses can still provide high-quality performance, especially in applications where the light wavelength is within the visible spectrum (587.6 nm, as indicated in the item data).