49-100 15 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.33 BBAR 425-675nm

This is a 15 mm diameter aspheric lens, catalog number 49-100, sourced from Edmund Optics. The lens is made from L-BAL35 material, a high-quality optical glass from Ohara. It is designed with a base shape of a circle and has a numerical aperture (NA) of 0.33, indicating a wide angle of acceptance for light.

The lens is coated with BBAR 425-675, a broadband anti-reflection coating that reduces surface reflections and increases transmission in the visible spectrum, specifically between 425nm and 675nm. This coating enhances the lens's performance in various applications, including imaging and laser systems.

The lens's geometry includes an inner radius of 0, an outer radius of 0, a thickness at the edge of 1.8mm, and a thickness at the center of 4mm. The effective focal length (EFL) is 22.5mm, and the back focal length (BFL) is 19.98mm. The lens's aspheric surface is defined by a conic constant of -2.364143, which helps to minimize spherical aberration and other optical aberrations.

The lens is available for purchase through the provided weblink, which indicates that it is currently in stock. This lens is an excellent choice for applications that require high-quality imaging and light transmission in the visible spectrum.