The AL7560-B is a high-precision aspheric lens offered by Thorlabs, designed with a 75 mm diameter and a focal length of 60 mm. This lens is crafted from n-BK7 Schott glass, a material known for its excellent optical properties and high damage threshold. The lens features a high numerical aperture (NA) of 0.62, which allows for a wide angle of acceptance and increased light-gathering capability.
The lens's aspheric design significantly reduces spherical aberration, a common issue in traditional spherical lenses, thereby improving image quality and resolution. The lens is CNC polished, ensuring superior surface quality and accuracy. The anti-reflection coating on both the front and back surfaces, with a specified range of 650-1050 nm, minimizes light loss due to reflection, thereby enhancing transmission and overall system performance.
This lens is suitable for use in various applications, including but not limited to, beam shaping, imaging, and laser systems. It is currently in stock, as indicated by its weblink status, and more information can be found on Thorlabs' official website.