AL1225-C 12.5 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=25 mm; NA=0.23 AR 1050-1700nm

The AL1225-C is a high-precision aspheric lens offered by Thorlabs, a leading global manufacturer of photonics equipment. This lens, with a diameter of 12.5 mm, is designed for use with a wavelength of 780 nm and features an effective focal length (EFL) of 25 mm. The lens is made from n-BK7 Schott glass, a popular material for optical elements due to its excellent optical properties and durability.

The lens's aspheric design is achieved through CNC polishing, a process that ensures high precision and accuracy. This design helps to minimize spherical aberration, a common issue in optical systems, thereby improving the overall image quality. The lens has a numerical aperture (NA) of 0.23, which contributes to its high light-gathering capability.

The AL1225-C is coated with a broadband anti-reflection coating, specifically designed for the wavelength range of 1050-1700 nm. This coating reduces unwanted reflections, thereby improving transmission and enhancing the performance of the optical system.

The lens's geometry includes a thickness of 2.5 mm at the edge and 4 mm at the center, with a radius of curvature of 12.78 mm at the front surface. The lens's high-quality construction and advanced design make it suitable for a wide range of applications, including but not limited to, beam shaping, focusing, and imaging.

According to Thorlabs' website, the AL1225-C is currently in stock, indicating its availability for immediate purchase and use.