ACL5040U ø50 mm Aspheric Condenser Lens; f=40 mm, NA=0.60 Uncoated

The ACL5040U is a high-quality aspheric condenser lens, designed and manufactured by Thorlabs. This lens, with a catalog number ACL5040U, is part of Thorlabs' extensive catalog of optical elements, available for various applications in the field of optics and photonics.

The lens is made of b270 Schott glass, a popular material for its excellent optical properties and durability. It has a diameter of 50 mm and a thickness of 2.6 mm at the edge, ensuring robustness and stability. The effective focal length (EFL) of the lens is 40 mm, making it suitable for a wide range of applications.

The ACL5040U features an aspheric surface with a radius of curvature of 20.923 mm at the front and a parabolic shape at the back. This design provides superior optical performance, reducing spherical aberration and improving image quality. The lens has a numerical aperture (NA) of 0.6, which is relatively high for a condenser lens, allowing for a wide angle of light collection and efficient light transmission.

The lens is uncoated, which means it does not have any anti-reflective coatings. While this may result in a higher reflective loss, it also means that the lens is less susceptible to damage from environmental factors, making it a durable choice for many applications.

The ACL5040U is currently in stock and available for purchase through the Thorlabs website. With its high-quality materials, advanced design, and excellent optical performance, this lens is an excellent choice for various applications in optics and photonics.