67-594 4.5mm Dia. x 4.5mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

The 67-594 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading global provider of optical components. This lens boasts a 4.5mm diameter and a focal length of 4.5mm, making it a versatile choice for a wide range of applications.

The lens is constructed from n-lasf44 Schott, a material known for its excellent optical properties. This, combined with its double-convex geometry, ensures high-quality image formation and low distortion. The lens has an inner radius of 0mm and an outer radius of 0mm, further enhancing its optical performance.

The 67-594 is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces. This coating is specifically designed for use in the near-infrared spectrum, covering the wavelength range of 750-1550nm. It provides high transmission and excellent environmental resistance, making it ideal for use in demanding environments.

The lens has a thickness of 1.8mm at the edge and 2.6mm at the center. Its effective focal length (EFL) is 9mm, and its back focal length (BFL) is 8.16mm. This combination of features makes the 67-594 a reliable and high-performing lens for a variety of applications in the near-infrared spectrum.