355390-A 4.5 mm Dia. D-ZLAF52LA Molded Glass Aspheric Lenses; EFL=2.8 mm; NA=0.55 AR 350-700nm

The 355390-A is a high-quality aspheric lens from Thorlabs, designed with a 4.5 mm diameter and a molded glass construction using D-ZLAF52LA material. This lens is specifically engineered for use in the 350-700nm wavelength range, making it suitable for a wide array of optical applications.

The lens boasts an effective focal length (EFL) of 2.8 mm, which is a crucial factor in determining the lens's magnification and field of view. The high numerical aperture (NA) of 0.55 enhances the lens's light-gathering capability, improving image quality and resolution.

The lens's aspheric design helps minimize spherical aberration, a common issue in traditional spherical lenses that can lead to distorted images. This design ensures that the lens delivers sharp, clear images across the entire field of view.

The lens is coated with a broadband anti-reflection (AR) coating, which reduces surface reflections and increases transmission, thereby improving overall system performance. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance from both the incident and reflected light paths.

The 355390-A is currently in stock and available for immediate purchase through the Thorlabs website. With its superior optical performance, robust construction, and wide wavelength compatibility, this lens is an excellent choice for a variety of optical systems and applications.