114-1208E 25.4 mm Dia. x -50 mm FL; Uncoated; Double-Concave Lens

The 114-1208E is a spherical lens with a base shape of a circle, designed and manufactured by EKSMA Optics. This lens falls under the category of a double-concave lens, featuring negative focal length, making it suitable for applications that require light convergence.

The lens has a diameter of 25.4 mm and a thickness of 6 mm at the edge, while the center thickness measures 2.6 mm. The effective focal length (EFL) of this lens is -50 mm, indicating that it will cause light to converge at a point 50 mm away from the lens if the light rays are parallel to the optical axis.

The lens is made from UVFS Mal- 1965, a material specifically designed for use in the ultraviolet spectrum at a wavelength of 355 nm. This makes the lens ideal for applications that involve ultraviolet light, such as UV curing, spectroscopy, or fluorescence microscopy.

Notably, this lens is uncoated, meaning it does not have any additional layers to enhance its optical properties or protect it from environmental factors. This may affect its performance in certain applications, particularly those requiring high transmission or resistance to environmental conditions.