PLCV-FS13 25.4 mm Dia. x -250 mm FL; Uncoated; Plano-Concave Lens

The PLCV-FS13 is a plano-concave lens with a diameter of 25.4 mm and a focal length of -250 mm. This lens, sourced from WTS Photonics, is a spherical lens with a base shape of a circle. It is made from fused sil mal-1965, a material with a refractive index suitable for various optical applications.

The lens has a thickness of 2.7 mm at the edge and 2 mm at the center, providing a robust structure while maintaining a sleek profile. The inner and outer radii are both 0, indicating a uniform curvature throughout the lens. The back focal length (BFL) is -251.5 mm, which is slightly longer than the effective focal length (EFL), a common characteristic in plano-concave lenses.

The lens is uncoated, offering a clear, unaltered view of the light passing through it. However, this also means that it may be more susceptible to environmental factors such as dust and moisture. The lens is designed to operate at a wavelength of 633 nm, making it suitable for a wide range of applications in the visible light spectrum.