16-277 50mm Dia. N-BK7 NIR Aspheric Lens; EFL=100mm; NA=0.25 VIS Plus 350-700nm

The 16-277 is a high-quality aspheric lens offered by Edmund Optics, designed for use in the near-infrared (NIR) spectrum with a wavelength of 780nm. This lens boasts a 50mm diameter and a numerical aperture (NA) of 0.25, making it suitable for a wide range of optical applications.

The lens is crafted from N-BK7, a popular optical glass known for its excellent transparency in the visible and near-infrared regions. This material ensures high-quality image transmission and minimal optical distortion. The aspheric design of the lens further enhances its performance by reducing spherical aberration, a common issue in traditional spherical lenses.

The lens features an effective focal length (EFL) of 100mm, providing a long focal length that is ideal for applications requiring high magnification or narrow fields of view. The lens has a center thickness of 10mm and an edge thickness of 3.73mm, ensuring structural rigidity and durability.

The 16-277 lens comes with a front and back coating of Edmund Optics' VIS Plus 350-700nm coating. This anti-reflection coating enhances the lens's transmission in the visible and near-infrared regions, reducing unwanted reflections and improving overall image quality.