67-439 3.0mm Dia. x 3.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

The 67-439 is a Plano-Convex lens, a type of spherical lens, with a diameter of 3mm and a focal length of 3mm. This lens is sourced from Edmund Optics, a renowned vendor in the optical industry. The lens is made from n-sf11 Schott, a high-index glass with excellent transmittance in the near-infrared (NIR) region.

The lens features a front and back coating of edm nir-ii std curve, which is specifically designed for the NIR II region, enhancing its performance in the 750-1550nm wavelength range. This coating ensures high transmission and low reflection, making it ideal for applications such as biomedical imaging, night vision, and spectral analysis.

The lens has a thickness of 1.46mm at the edge and 2mm at the center, providing a balanced profile for efficient light transmission. The inner radius is 0, indicating a flat surface on the back side of the lens, while the outer radius is also 0, suggesting a curved surface on the front side. The back focal length (BFL) is 1.88mm, which is the distance from the back surface of the lens to the focal point.