G313215329 22.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-50mm 1064nm

This is a G313215329 double-concave lens, featuring a 22.4 mm diameter and a center thickness of 1.5 mm. The lens is made of N-BK7, a popular optical glass from Schott, known for its excellent optical properties and versatility. The lens has a double-concave geometry, meaning it is curved inward on both sides, with radii of curvature of -52.33 mm on the first surface and 52.33 mm on the second surface. This particular lens has an effective focal length (EFL) of -50 mm, making it suitable for applications that require a negative focal length.

The lens is designed to operate at a wavelength of 588 nm, but it can also be used at other wavelengths, making it a versatile choice for various optical systems. The lens comes with a Qio HP Nbar ARHS-YAG coating on both the front and back surfaces, which provides excellent anti-reflection properties, reducing unwanted reflections and increasing transmission.

This lens is sourced from Qioptiq Photonics, a leading vendor in the field of precision optics, ensuring high quality and reliability. The lens is currently in stock and available for purchase through their website, as indicated by the "weblink status" field in the item data.