AL75150 75 mm Dia. N-BK7 High-Precision; CNC Polished Aspheric Lenses; EFL=150 mm; NA=0.23 Uncoated

The AL75150 is a high-precision aspheric lens offered by Thorlabs, boasting a 75 mm diameter and a focal length of 150 mm. This lens is crafted from N-BK7, a renowned optical glass from Schott, and features a polished surface resulting from Computer Numerical Control (CNC) machining.

The lens's asphere parameters are intricately designed, with a conic constant of -0.675 and a series of aspheric coefficients (a2 to a14) that progressively decrease to zero. This design ensures superior image quality and minimal spherical aberration compared to traditional spherical lenses. The lens's numerical aperture (NA) is 0.23, indicating a wide acceptance angle for light rays, which is beneficial for various imaging applications.

The lens's geometry includes an edge thickness of 5.7 mm and a center thickness of 15 mm. The lens is uncoated, which may be suitable for applications where anti-reflective coatings are not required or preferred.

According to the vendor's website, the AL75150 is currently in stock, making it readily available for immediate use. For more information, users are encouraged to visit the provided weblink.