G313216000 22.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-100mm Uncoated

The G313216000 is a high-quality double-concave lens from Qioptiq Photonics, featuring a 22.4 mm diameter and a center thickness of 1.5 mm. This lens is designed for use with a wavelength of 588 nm and is made from N-BK7 glass, a popular choice due to its excellent optical properties and wide transparency range.

The lens's geometry is characterized by its symmetric concave design, with both radii of curvature (R1 and R2) measuring 104.41 mm. This double-concave shape results in a negative effective focal length (EFL) of -100 mm, making it suitable for a variety of applications that require image reduction or the convergence of light rays.

Notably, this lens is uncoated, which means it does not have any additional layers to enhance its optical performance. While this may result in a slightly lower transmission rate and increased susceptibility to environmental factors, it also means that the lens is more cost-effective and easier to clean.

The lens's geometry and material make it a versatile component for various optical systems. However, users should consider its uncoated nature and plan accordingly. For instance, if operating in high-light conditions or requiring high-precision imaging, additional coatings or alternative lenses might be necessary.