16-983 30mm Dia. N-SF5 Precision Aspheric Lens; EFL=30mm; NA=0.5 NIR-Plus 600-1050nm

This is the 16-983 model from Edmund Optics, a high-precision aspheric lens with a 30mm diameter and a numerical aperture of 0.5, designed for use in the near-infrared spectrum of 600-1050nm. The lens is made from N-SF5 Schott, a high-refractive index glass that is known for its excellent optical properties.

The lens features a 30mm effective focal length (EFL), which is the distance from the lens's principal point to the focal point when the lens is focused at infinity. This EFL makes it suitable for a wide range of applications that require a moderate focal length.

The lens has a high numerical aperture (NA) of 0.5, which determines the light-gathering ability of the lens. A higher NA allows for a greater light-gathering capability, resulting in a brighter and clearer image. This makes the lens ideal for applications that require high resolution and high contrast.

The lens is coated with Edmund Optics' NIR-Plus 600-1050nm coating on both the front and back surfaces. This coating is designed to enhance the lens's performance in the near-infrared spectrum, improving its transmission and reducing its reflectance. This results in improved image quality and increased efficiency.

The lens has a aspheric shape, which is a type of lens profile that deviates from the standard spherical shape. This design allows for the correction of spherical aberration, a common optical problem that can degrade image quality. The aspheric shape also allows for a reduced thickness and weight, making the lens more compact and easier to handle.