354330-A 6.325 mm Dia. D-ZK3 Molded Glass Aspheric Lenses; EFL=3.1 mm; NA=0.7 AR 350-700nm

The 354330-A is a high-quality aspheric lens from Thorlabs, designed with a 6.325 mm diameter and a center thickness of 3.214 mm. This lens is made from D-ZK3 glass, a molded glass material known for its excellent optical properties. The lens features an effective focal length (EFL) of 3.1 mm, making it suitable for a wide range of optical applications.

The lens's aspheric design is a significant advantage, as it helps to reduce spherical aberration, a common issue in optical systems. The aspheric surface is defined by a conic constant of -0.542123 and coefficients up to the 16th order, ensuring high-quality imaging performance. The lens has a numerical aperture (NA) of 0.7, which contributes to its high light-gathering capability.

The 354330-A lens is coated with an anti-reflection coating (AR) that covers the wavelength range of 350-700 nm. This coating helps to minimize surface reflections, thereby improving transmission and reducing ghost images. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance.

In terms of dimensions, the lens has an outer radius of 0 mm and an inner radius of 0 mm, making it a circular lens. The thickness at the edge is 1.556 mm. The lens is currently in stock and available for immediate shipping, as indicated by its valid weblink status.