LP11-30-100 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-100mm Uncoated

This is a Plano-Concave Spherical Lens, sourced from CeNing Optics, with a circular base shape and a diameter of 25.4 mm. The lens has a center thickness of 2 mm and an effective focal length (EFL) of -100 mm, making it a diverging lens. The inner and outer radii are both 0, indicating a plano surface on one side and a concave surface on the other.

The lens is made of N-BK7, a type of borosilicate glass commonly used in optical applications due to its low coefficient of thermal expansion and excellent optical transmission properties. The material has a refractive index of approximately 1.5168 at the specified wavelength of 546.1 nm.

Notably, this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflection, increasing transmission, or providing other desirable optical properties. However, in this case, the lens is offered in its bare form, which may be suitable for certain applications where coating is not required or desired.

Please note that the vendor, CeNing Optics, lists this item as in stock on their website. For more information, including pricing and availability, users are encouraged to visit the provided weblink.