N414-A 4.5 mm Dia. H-ZLAF52 Molded Glass Aspheric Lenses; EFL=3.3 mm; NA=0.47 AR 350-700nm

The N414-A is a high-quality aspheric lens from Thorlabs, designed with a 4.5 mm diameter and a focal length of 3.3 mm. This lens is made from H-ZLAF52 glass, a molded glass material with a high refractive index and excellent transparency in the visible spectrum.

The lens features an aspheric design, which provides superior optical performance compared to traditional spherical lenses. This is achieved through the precise shaping of the lens, which reduces spherical aberration and distortion, resulting in sharper images and more accurate light transmission.

The N414-A has a numerical aperture (NA) of 0.47, which measures the lens' light-gathering ability. A higher NA allows for more light to be collected, making this lens ideal for applications that require high light transmission, such as microscopy or beam shaping.

The lens is coated with an anti-reflective (AR) coating, specifically designed for the 350-700nm wavelength range. This coating reduces unwanted reflections, improving the overall transmission of light through the lens.

The N414-A is currently in stock and available for immediate purchase from Thorlabs. With its superior optical performance, high light-gathering ability, and anti-reflective coating, this lens is an excellent choice for a wide range of optical applications.