67-666 40mm Dia. x 40mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

The 67-666 is a high-quality double-convex lens, boasting a 40mm diameter and a focal length of 40mm, making it an ideal choice for a wide range of applications. This lens is sourced from the renowned optical vendor, Edmund Optics, ensuring top-tier performance and reliability.

The lens is constructed from n-sf11 Schott, a high-index glass material known for its excellent optical properties. This material, combined with the lens's double-convex geometry, enables superior light transmission and focusing capabilities. The lens's base shape is circular, contributing to its versatility and applicability in various settings.

The 67-666 features a significant thickness, with an edge thickness of 1.74mm and a center thickness of 8.5mm. This robust construction ensures durability and stability, making the lens resistant to wear and tear. The effective focal length (EFL) is 40mm, which, when combined with the lens's diameter, results in a high numerical aperture (NA), enhancing the lens's light-gathering capabilities.

The lens's geometry includes an inner radius of 0mm and an outer radius of 0mm, indicating a symmetrical design. The first radius of curvature (R1) is 60.85mm, while the second radius (R2) is -60.85mm, reflecting the double-convex shape. The back focal length (BFL) is 37.54mm.

The 67-666 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 near-infrared (NIR) spectrum, specifically between 750nm and 1550nm, making it suitable for NIR applications.