355392-A 4 mm Dia. D-ZLAF52LA Molded Glass Aspheric Lenses; EFL=2.8 mm; NA=0.6 AR 350-700nm

The 355392-A is a high-quality aspheric lens from Thorlabs, designed with a 4 mm diameter and a molded glass construction using D-ZLAF52LA CGDM material. This lens is specifically engineered for use with a wavelength of 830 nm, offering an effective focal length (EFL) of 2.8 mm and a numerical aperture (NA) of 0.6.

The lens features an aspheric design, which provides superior optical performance compared to traditional spherical lenses. This is achieved through the precise control of the lens's surface curvature, minimizing spherical aberration and delivering improved image quality. The lens's geometry includes an inner radius of 0 mm, an outer radius of 0 mm, a thickness at the edge of 1.339 mm, and a thickness at the center of 2.24 mm.

The 355392-A lens comes with anti-reflection (AR) coatings on both the front and back surfaces, designed to operate within the 350-700 nm wavelength range. These coatings significantly reduce surface reflections, improving light transmission and enhancing overall system performance.

This lens is available for purchase directly from Thorlabs and is currently in stock, making it an ideal choice for users seeking advanced optical components with quick delivery.