AL1210M 12.5 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=10 mm; NA=0.55 Uncoated

The AL1210M is a high-precision aspheric lens offered by Thorlabs, designed with a 12.5 mm diameter and a central thickness of 4.25 mm. This lens is crafted from S-LAH64, a high-quality optical glass from Ohara, and features a high numerical aperture (NA) of 0.55. The lens's design includes an effective focal length (EFL) of 10 mm, making it suitable for various applications.

The aspheric geometry of the AL1210M is defined by its inner and outer radii, both of which are 0 mm. The lens's edge thickness is 1.6 mm, while the center thickness is 4.25 mm. The aspheric coefficients, such as k1, k2, a2, a4, a6, a8, a10, and a12, are provided, allowing users to understand the lens's shape and performance in detail.

This lens is uncoated, which means it does not have any anti-reflective or other surface coatings. While this may result in higher reflective losses, it also means that the lens is more cost-effective and versatile, as it can be used in a wider range of applications without the need for specialized coatings.

The lens's availability and stock status can be checked on Thorlabs' official website, where more detailed specifications and technical drawings are also available.