67-996 20mm Dia. x -30 FL; NIR II Coated; Plano-Concave Lens 750-1550nm

The 67-996 is a 20mm diameter Plano-Concave Lens with a focal length of -30, sourced from the renowned optical components vendor, Edmund Optics. This lens is designed for use in the near-infrared (NIR) spectrum, specifically catering to the 750-1550nm range, making it ideal for applications such as night vision, thermal imaging, and spectral analysis.

The lens is constructed from n-SF11 Schott, a high-index glass that offers excellent optical performance. It features a plano-concave geometry, meaning it has a flat front surface and a curved back surface, which is designed to disperse light rays and reduce spherical aberration. The lens has a thickness of 5.39mm at the edge and 3.5mm at the center, providing a robust structure while maintaining a sleek profile.

The 67-996 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 spectrum by reducing reflection and increasing transmission, thereby improving image quality and signal-to-noise ratio. The coating also provides excellent environmental stability, ensuring the lens maintains its performance even in harsh conditions.