G312329322 12.5 mm Dia. N-BK7 Plano-Convex Lens; EFL=20mm 450-700nm

The G312329322 is a 12.5 mm diameter Plano-Convex lens, manufactured by Qioptiq Photonics. This lens is designed for use within the wavelength range of 450-700nm, making it suitable for a wide range of applications within the visible light spectrum.

The lens is made from N-BK7, a popular optical glass due to its excellent optical properties and high Abbe number. The Plano-Convex design features a flat (Plano) surface on one side and a curved (Convex) surface on the other. This design is often used to focus light, making it ideal for imaging and beam shaping applications.

The lens has an effective focal length (EFL) of 20mm, a crucial specification for determining the lens's magnification power. The EFL is the distance from the lens's center to the point at which the lens focuses parallel rays of light. A longer EFL results in a narrower angle of view and higher magnification, while a shorter EFL results in a wider angle of view and lower magnification.

The lens's geometry includes a thickness of 1.4mm at the edge and 3.5mm at the center. The curvature of the convex surface is defined by a radius of 10.44mm. The lens is unmounted, providing flexibility for integration into various optical systems.

The lens is coated with Qio Bbar Arb2visnbk7 on both the front and back surfaces. This coating is designed to reduce reflection and improve transmission, enhancing the lens's performance in its intended application.