This is the G314305400 10 mm Dia. N-BK7 Plano-Concave Lens, a high-quality optical component sourced from Qioptiq Photonics. The lens, which has a plano-concave geometry, is designed for use with a wavelength of 588 nm and is available for purchase from the Qioptiq Photonics online store.
The lens features a base shape of a circle, with a diameter of 10 mm and a center thickness of 1.5 mm. The effective focal length (EFL) of the lens is -16 mm, making it suitable for use in a variety of optical applications. The lens is made from N-BK7 glass, a popular material for optical components due to its excellent optical properties.
The G314305400 lens is coated with a silver coating on both the front and back surfaces, identified as Qio Silver RAGV 45. This coating enhances the lens's performance by reducing reflection and increasing transmission.