AL1815 18 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=15 mm; NA=0.53 Uncoated

The AL1815 is a high-precision aspheric lens, meticulously crafted by Thorlabs. This lens, with a diameter of 18 mm, is constructed from S-LAH64 Ohara, a material renowned for its exceptional optical properties. The lens is designed to operate at a wavelength of 780 nm, making it suitable for a wide range of applications.

The lens features an effective focal length (EFL) of 15 mm, a crucial parameter that determines the lens's magnification power. The EFL, combined with the lens's high numerical aperture (NA) of 0.53, enables the lens to gather and focus light efficiently, which is particularly beneficial in imaging and laser applications.

The AL1815's geometry is another notable feature. It has an inner radius of 0 mm, an outer radius of 0 mm, and a thickness at the edge of 2.5 mm. The center thickness is 6.2 mm, providing robustness and stability to the lens. The lens's aspheric shape, defined by its radii (r1=11.65 mm, r2=0 mm), and its high-order aspheric coefficients (a2 to a16), ensure superior image quality by minimizing spherical aberration.

The lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. This lens is currently in stock and available for immediate shipping, as indicated by its valid weblink status.