16-292 12.5mm Dia. N-BK7 NIR Aspheric Lens; EFL=25mm; NA=0.25 SWIR-Plus 900-1700nm

This is a high-quality 16-292 12.5mm Dia. N-BK7 NIR Aspheric Lens, designed for use in the near-infrared (NIR) spectrum with a wavelength of 780nm. The lens is sourced from the renowned optical vendor, Edmund Optics, and is currently in stock.

The lens is made from N-BK7 Schott glass, a popular material for its excellent optical properties and versatility. It features a circular base shape and a 12.5mm diameter, making it suitable for a wide range of optical applications. The lens has a high numerical aperture (NA) of 0.25, which allows for a larger light-gathering capacity and improved image resolution.

The lens's geometry includes an inner radius of 0, an outer radius of 0, a thickness at the edge of 2.43mm, and an effective focal length (EFL) of 25mm. The front surface of the lens has a radius of curvature (R1) of 12.78mm and a back surface with no curvature (R2). The lens's thickness at the center is 4mm, and it has a conic constant (k1) of -0.692.

The lens is coated with Edmund Optics' SWIR-Plus 900-1700nm coating on both the front and back surfaces. This coating enhances the lens's performance in the NIR spectrum, providing improved transmission and reduced reflection.

The lens's shape is aspheric, which helps to correct spherical aberration and other optical distortions, resulting in superior image quality. The lens's front and back surfaces are both coated with the same SWIR-Plus 900-1700nm coating, ensuring optimal performance across the entire lens surface.