114-0224E 25.4 mm Dia. x -200 mm FL; Uncoated; Double-Concave Lens

The 114-0224E is a double-concave lens with a base shape of a circle, sourced from EKSMA Optics. This lens is designed for use in various optical systems, featuring a diameter of 25.4 mm and a center thickness of 2.8 mm. The edge thickness of the lens measures 3.6 mm, providing additional durability and resistance to potential damage.

The lens has an effective focal length (EFL) of -200 mm, indicating its double-concave nature. This negative focal length is crucial for specific applications requiring a reduction in the size of an image or the divergence of light rays. The radii of curvature for this lens are -208 mm for the first surface and 208 mm for the second surface, which contributes to its double-concave shape.

The lens is made of the material n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low dispersion. This material is widely used in various optical applications, including imaging systems, beam expanders, and laser systems. The wavelength for this lens is 546 nm, which falls within the visible light spectrum, ensuring optimal performance in applications involving visible light.

This lens does not come with any coating, which means it is uncoated. While coatings can enhance the performance of lenses by reducing reflection, increasing transmission, or providing protection against environmental factors, an uncoated lens can be suitable for specific applications where such enhancements are not required or desirable.