22-991 10mm Dia. N-SF6 Precision Aspheric Lens; EFL=7.5mm; NA=0.67 SWIR-Plus 900-1700nm

The 22-991 is a high-precision aspheric lens, boasting a 10mm diameter and a numerical aperture (NA) of 0.67. This lens is designed for use in the shortwave infrared (SWIR) spectrum, specifically between 900 and 1700nm.

The lens is crafted from N-SF6 Schott, a material known for its excellent optical properties in the SWIR range. It features an effective focal length (EFL) of 7.5mm, making it suitable for a variety of applications that require a compact, high-performance lens.

The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional spherical lenses. This results in improved image quality, with sharper focus and increased contrast. The lens also features a high NA, which allows for a larger light-gathering capacity, enhancing its performance in low-light conditions.

The 22-991 is coated with Edmund Optics' SWIR-Plus coating, which is specifically designed for use in the 900-1700nm range. This coating helps to reduce surface reflections, improving transmission and enhancing the overall performance of the lens.

The lens has a center thickness of 7.5mm and an edge thickness of 5.25mm, providing a robust and durable design. The front and back surfaces of the lens are coated with the same SWIR-Plus coating, ensuring optimal performance from both sides.