67-493 12.0mm Dia. x 12.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

The 67-493 is a Plano-Convex lens with a diameter of 12.0mm and a focal length of 12.0mm, sourced from the renowned optical component vendor, Edmund Optics. This lens is specifically designed for use in the Near-Infrared (NIR) spectrum, covering the wavelength range of 750-1550nm, making it ideal for various applications in this spectral region.

The lens is made from N-BK7 Schott glass, a popular material for optical components due to its excellent optical properties and versatility. The Plano-Convex geometry, where one side is flat and the other is curved, is a common design for lenses, providing a simple yet effective way to focus light.

The 67-493 features a front and back coating of EDM NIR-II STD Curve, a specialized coating designed for use in the NIR spectrum. This coating enhances the lens' performance by reducing surface reflections and increasing transmission in the NIR range.

The lens has an effective focal length (EFL) of 75mm, a crucial parameter in lens selection. The EFL, combined with the lens' diameter and thickness, determines how the lens will focus light. The 67-493 has a center thickness of 3mm and an edge thickness of 2.68mm, providing a robust and durable design.