111-0114E 12.7 mm Dia. x 40 mm FL; Uncoated; Double-Convex Lens

The 111-0114E is a high-quality double-convex lens, sourced from EKSMA Optics, a renowned vendor known for its extensive range of optical components. This lens boasts a 12.7 mm diameter and a focal length of 40 mm, making it suitable for a wide range of applications.

The lens is fabricated from BK7 glass, a popular material due to its excellent optical properties and versatility. The base shape of the lens is circular, and it features a double-convex geometry, with radii of curvature R1 and R2 measured at 41.1 mm and -41.1 mm respectively. This geometry results in a high refractive power, making the lens ideal for focusing or magnifying light.

The lens has a thickness of 1.5 mm at the edge and 2.5 mm at the center, providing robustness and durability. The effective focal length (EFL) is 40 mm, which is the distance from the lens's principal point to the focal point. This information is crucial in determining the lens's magnification power and field of view.

Notably, the lens is uncoated, meaning it does not have any anti-reflective or other surface treatments. While this may result in higher reflective losses, it also means the lens can be used in a broader spectral range without the risk of coating damage.

The item data provided does not specify the wavelength of operation. However, for BK7 glass, the typical wavelength range is from 365 nm to 2500 nm. Therefore, this lens can be used in various applications, from ultraviolet (UV) to infrared (IR) spectrum.