ACL4532U-A ø45 mm Aspheric Condenser Lens; f=32.1 mm, NA=0.60 AR 350-700nm

The ACL4532U-A is a high-quality aspheric condenser lens, manufactured by Thorlabs, offering an impressive numerical aperture (NA) of 0.60 and a focal length of 32.1 mm. This lens is specifically designed for use in the visible spectrum, with an anti-reflective (AR) coating optimized for 350-700 nm.

This lens is made of B270 Schott glass, a popular material for optical elements due to its excellent transparency and homogeneity. The lens features a 45 mm diameter, with a center thickness of 18.5 mm and an edge thickness of 2.2 mm. The aspheric design allows for superior image quality, minimizing spherical aberration and distortion compared to traditional spherical lenses.

The ACL4532U-A's geometry includes a front surface radius of curvature (R1) of 18.281 mm and a back surface radius (R2) of 130 mm. The lens has a back focal length (BFL) of 21 mm and an effective focal length (EFL) of 32.1 mm. The aspheric coefficients for the front surface are: A2=0, A4=2e-06, A6=0, A8=0, A10=0, A12=0, A14=0, A16=0.

The lens is coated with a broadband anti-reflective coating on both the front and back surfaces, which significantly reduces surface reflections and increases transmission in the specified wavelength range. This coating ensures optimal performance and minimal loss of light, making it an ideal choice for various applications, including microscopy, beam shaping, and laser systems.