AL4532-B 45 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=32 mm; NA=0.61 AR 650-1050nm

The AL4532-B is a high-precision aspheric lens, meticulously crafted by Thorlabs. This lens boasts a 45 mm diameter and is constructed from S-LAH64, a high-quality material from Ohara. The lens is designed for use with a wavelength of 780 nm, making it suitable for a wide range of applications.

The lens features an effective focal length (EFL) of 32 mm, which is a crucial parameter in lens selection. The EFL determines the distance between the lens and the focal point, influencing the overall design and functionality of the optical system.

The aspheric design of the lens is achieved through specific curvature changes along the radial direction. This design reduces spherical aberration, a common issue in traditional spherical lenses, thereby improving image quality. The lens has a numerical aperture (NA) of 0.61, which is a measure of the lens' light-gathering ability and resolution.

The lens is CNC polished, ensuring superior surface quality and accuracy. It is coated with THo BBAR, a broadband anti-reflection coating that reduces reflection across the 650-1050 nm range, enhancing transmission and overall system performance.

According to the vendor's information, the lens is currently in stock, making it readily available for immediate use. For more details, users can refer to the provided web link.