114-0208E 25.4 mm Dia. x -50 mm FL; Uncoated; Double-Concave Lens

The 114-0208E is a high-quality double-concave lens, sourced from the reputable optical components manufacturer, EKSMA Optics. This lens is designed with a base shape of a circle and features a spherical geometry, making it suitable for a wide range of optical applications.

The lens has a diameter of 25.4 mm, providing a substantial surface area for light transmission. The edge thickness is 7.5 mm, and the center thickness is 4.5 mm, offering a robust structure while maintaining a sleek profile. The effective focal length (EFL) of this lens is -50 mm, indicating its concave nature, which is ideal for dispersing or reducing the intensity of light.

The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The wavelength of 546 nm suggests that this lens is optimized for the visible light spectrum, making it suitable for applications such as microscopy, beam shaping, and laser systems.

Notably, this lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. However, it's essential to consider that uncoated lenses may have higher surface reflections, which could impact the overall system performance.