G311328331 6 mm Dia. N-BAK4 Double-Convex Lens; EFL=5mm

The G311328331 is a 6 mm diameter spherical lens with a double-convex geometry, sourced from Qioptiq Photonics. This lens is designed for use in the visible light spectrum, specifically at a wavelength of 587.6 nm. The lens is made from N-BAK4, a Schott glass material known for its high refractive index and low dispersion, making it ideal for imaging applications.

The lens features an effective focal length (EFL) of 5 mm, which is the distance from the lens's center to the focal point when the lens is placed in an optical system. The lens's geometry includes a 0.9 mm thickness at the edge and a 2.9 mm thickness at the center. The front and back surfaces of the lens are coated with Qio AL RALVIS AOI 45, a broadband anti-reflection coating that reduces surface reflections and increases transmission.

The lens's base shape is circular, and its radii of curvature are 5.085 mm for the first surface and -5.085 mm for the second surface. The lens is unmounted, providing flexibility for integration into various optical systems. The item data indicates that this lens is in stock and available for purchase, with more information and purchasing options available on the Qioptiq Photonics website.