49-492 25mm Dia. x 50mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm

The 49-492 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading global manufacturer and supplier of optical components. This lens boasts a diameter of 25mm and a focal length of 50mm, making it a versatile choice for a wide range of applications.

The lens is constructed from N-BK7 Schott, a popular optical glass known for its excellent optical properties and high damage threshold. This material is particularly suitable for use in the visible and near-infrared regions of the spectrum, making the 49-492 an ideal choice for applications that require high-quality imaging in these wavelength ranges.

The lens features a standard NIR I coating on both the front and back surfaces. This coating is specifically designed to enhance the lens' performance in the near-infrared region, providing improved transmission and reduced reflectance. The coating curve is the EDM NIR-I std curve, which is a standard coating curve used by Edmund Optics for their NIR I coated lenses.

The geometry of the lens is characterized by its double-convex shape, with radii of curvature of 50.8mm for the first surface and -50.8mm for the second surface. This shape provides a high degree of focusing power, making the lens suitable for use in imaging systems where a high level of magnification is required.

The lens has an edge thickness of 1.88mm and a center thickness of 5mm. The back focal length is 48.29mm, providing a sufficient clearance for the installation of other optical components behind the lens. The inner and outer radii are both 0mm, indicating that the lens has no peripheral features that could affect its optical performance.