AL108 10 mm Dia. S-LAH643 High-Precision; CNC Polished Aspheric Lenses; EFL=8 mm; NA=0.55 Uncoated

The AL108 is a high-precision aspheric lens offered by Thorlabs, designed with a 10 mm diameter and a unique material ID of S-LAH64. This lens is specifically engineered for use with a wavelength of 780 nm, making it suitable for various applications within this spectrum.

The lens features an effective focal length (EFL) of 8 mm, which is a crucial factor in determining the lens's magnification power. The EFL, combined with the lens's high numerical aperture (NA) of 0.55, allows for a wide field of view and high light-gathering capability, making it ideal for imaging and laser applications.

The AL108's geometry is meticulously crafted, with an inner radius of 0 and an outer radius of 0, ensuring optimal light transmission. The lens has a thickness of 1.6 mm at the edge and 3.7 mm at the center, providing structural integrity and minimizing optical distortion.

The lens's asphere is defined by its radii (r1 and r2), which are 6.215 and 0, respectively. The aspheric shape helps correct spherical aberration, a common issue in traditional spherical lenses, thereby improving image quality. The lens's asphericity is further defined by its high-order aspheric coefficients, including a2 front, a4 front, a6 front, a8 front, a10 front, and a12 front, which ensure precise shaping and focusing of light.

Please note that the lens is uncoated, meaning it does not have any anti-reflective or protective coatings. This may affect its performance in high-intensity light applications or environments with a risk of physical damage. However, the lens's high-quality CNC polishing ensures excellent surface finish and optical performance.

In conclusion, the AL108 is a high-precision, aspheric lens ideal for applications requiring a wide field of view, high light-gathering capability, and excellent image quality. Its unique specifications and high-quality construction make it a valuable addition to any optical system.