67-637 18mm Dia. x 18mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

Discover the 67-637, a double-convex lens with a diameter of 18mm and a focal length of 18mm, designed for use in the near-infrared (NIR) spectrum. This lens, sourced from Edmund Optics, is specifically coated for NIR II applications, covering a wavelength range of 750-1550nm.

The lens is made from n-SF11 Schott, a high-index glass with excellent transmittance in the NIR region. It features a front and back coating of EDM NIR-II STD CURVE, ensuring optimal performance in its designated spectral range. The lens's geometry includes an edge thickness of 1.44mm and a center thickness of 4.5mm, with an effective focal length (EFL) of 18mm. The radii of curvature are R1 = 27.22mm and R2 = -27.22mm, while the back focal length (BFL) is 16.69mm.

This lens is a versatile choice for applications requiring high-quality imaging in the NIR II range. Its double-convex design provides a wide field of view, making it suitable for various optical systems. The lens is currently in stock and available for immediate purchase through the provided weblink.