112-0119E 12.7 mm Dia. x -125 mm FL; Uncoated; Plano-Concave Lens

The 112-0119E is a plano-concave lens with a diameter of 12.7 mm and a focal length of -125 mm, sourced from EKSMA Optics. This lens is designed for use in optical systems where a negative focal length is required. The plano-concave shape, characterized by a flat surface and a curved surface with a negative radius of curvature, allows for the convergence of light rays towards a virtual focus.

The lens is made from the material n-BK7 Schott, a borosilicate glass known for its excellent optical properties, including a high refractive index and low dispersion. This makes it suitable for a wide range of applications, particularly where high image quality and color correction are essential.

The geometry of the lens includes a thickness of 3.4 mm at the edge and 3.1 mm at the center, providing structural integrity while minimizing unnecessary weight. The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, this does not affect its performance in applications where such enhancements are not necessary.

The lens is designed to operate at a wavelength of 546 nm, a common wavelength for visible light applications. It is important to note that the lens's performance may vary depending on the specific conditions of its use, including the angle of incidence, the spectral composition of the light, and the surrounding environmental conditions.