68-006 6mm Dia. x -9mm FL; NIR II Coated; Double-Concave Lens 750-1550nm

The 68-006 is a high-quality double-concave lens, designed and manufactured by Edmund Optics, a leading global provider of optical components. This lens boasts a 6mm diameter and a focal length of -9mm, making it ideal for a wide range of applications that require precise optical performance.

The lens is constructed from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The double-concave design, characterized by its negative focal length, is particularly useful in imaging systems for correcting spherical aberration and improving image quality.

The lens features a broad wavelength range of 750-1550nm, which is typical for Near-Infrared (NIR) applications. This makes it suitable for various NIR-based systems, including spectroscopy, biomedical imaging, and optical communication.

The 68-006 is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens's performance in the NIR region by reducing surface reflections and improving transmission. The coating also provides excellent environmental resistance, ensuring the lens maintains its performance even in challenging conditions.