G314324000 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-500mm Uncoated

This is a Plano-Concave lens, type of spherical lens, sourced from Qioptiq Photonics. It features a base shape of a circle and is designed for use in the visible light spectrum, specifically at a wavelength of 588 nm. The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and wide transparency range.

The lens has a diameter of 25.4 mm and a center thickness of 1.5 mm. The effective focal length (EFL) is -500mm, indicating that it is a diverging lens, causing incoming light rays to spread out. The radius of curvature (R1) is -260.39 mm, while the inner and outer radii are both 0 mm, suggesting a plano surface on one side and a concave surface on the other.

Notably, this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflections, increasing transmission, or providing other desirable optical properties. However, this lens, in its uncoated form, offers a more basic optical performance, which may be sufficient for certain applications.

For more information, including pricing and availability, please refer to the vendor's website at https://www.qioptiq-shop.com/en/Precision-Optics/Singlets/Plano-Concave-Lenses/Plano-concave-lenses-unmounted-N-BK7.html. The link has been verified and the lens is currently in stock.