4.5mm Dia. x 9mm FL Visible Light Double-Convex Lens with VIS 0° Coating

This 4.5mm Dia. x 9mm FL (focal length) visible light double-convex lens, sourced from Edmund Optics, is a high-quality optical component designed for use in a wide range of applications. The lens is made from the renowned N-BK7 glass from Schott, ensuring excellent optical performance and durability.

The lens features a double-convex geometry, with a radius of curvature of 8.88mm for both the front and back surfaces. This geometry provides a large numerical aperture, making it ideal for use in high-resolution imaging systems. The lens has a clear aperture of 4.5mm and a center thickness of 2.38mm, providing a robust and compact design.

The lens is coated with a VIS 0° coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission in the visible light spectrum, enhancing the overall performance of the lens. The coating has a standard curve, ensuring consistent performance across a wide range of wavelengths, from 425nm to 675nm.

The lens has an effective focal length of 9mm, providing a moderate magnification and field of view. The back focal length of the lens is 8.16mm, which should be taken into account when designing optical systems. The lens is designed to be used in air, with an index of refraction of 1.000293.