The 355390-C is a high-quality aspheric lens, manufactured by Thorlabs, designed for use in a wide range of optical applications. This lens boasts a 4.5 mm diameter and is made from D-ZLAF52LA glass, a molded glass material with excellent optical properties.
The lens features an effective focal length (EFL) of 2.8 mm, providing a compact and efficient solution for focusing light. The aspheric design of the lens helps to reduce spherical aberration, enhancing the quality of the optical system. The lens has a numerical aperture (NA) of 0.55, which allows for a wide acceptance angle and high light-gathering capability.
The lens is coated with a broadband anti-reflection coating, optimized for the 1050-1700nm wavelength range. This coating reduces surface reflections, improving transmission and enhancing the overall performance of the lens.
The lens has a center thickness of 1.9 mm and an edge thickness of 1.13 mm, providing excellent mechanical stability. The lens is available for immediate purchase and is currently in stock, according to the vendor's website.