KBX166 50.8 mm Dia. x 200 mm FL; Uncoated; Double-Convex Lens

The KBX166 is a high-quality double-convex lens, sourced from the reputable vendor MKS/Newport. This lens, with a base shape of a circle, is designed for use in a wide range of optical applications, thanks to its versatile specifications.

The lens has a diameter of 50.8 mm, making it suitable for use in systems that require a substantial aperture. The thickness at the edge of the lens is 3 mm, while the center thickness is 6.149 mm. This design ensures that the lens can effectively focus light onto a specific point, making it ideal for use in imaging systems or laser applications.

The effective focal length (EFL) of the KBX166 is 200 mm. This, combined with its diameter, gives the lens a high numerical aperture (NA), which is beneficial in applications where high resolution and light-gathering capability are required.

The KBX166 is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and high transmittance in the visible spectrum. The radii of curvature for the first and second surfaces of the lens are 205.676 mm and -205.676 mm, respectively. These parameters, along with the lens's EFL, give the lens a back focal length (BFL) of 197.96 mm.

This lens is uncoated, meaning it does not have any anti-reflective coatings. While this may result in higher reflective losses at the lens surfaces, it also means that the lens is less susceptible to damage from environmental factors, making it suitable for use in harsh environments.

In conclusion, the KBX166 is a robust and versatile double-convex lens, ideal for use in various optical applications. Its high-quality construction, coupled with its excellent optical properties, makes it a reliable choice for professionals in the field of optics.