84-339 25mm Dia. UVFS Aspheric Lens; EFL=30mm; NA=0.42 UV-VIS 250-700nm

The 84-339 is a high-performance UVFS (UV Fused Silica) Aspheric Lens, meticulously crafted by Edmund Optics. This lens boasts a diameter of 25mm and a numerical aperture (NA) of 0.42, making it an ideal choice for applications that require a large light-gathering capability and high resolution.

The lens is designed for use within the UV-VIS spectrum, specifically between 250-700nm, making it suitable for a wide range of applications including UV curing, fluorescence microscopy, and various spectroscopy techniques. The lens features an effective focal length (EFL) of 30mm, which is the distance from the lens's principal point to its focal point, influencing the field of view and magnification of the system.

The lens's geometry is defined by its inner and outer radii, both of which are 0 in this case, indicating a flat surface. The lens has a thickness of 2.21mm at the edge and 8.5mm at the center. The aspheric design of the lens, characterized by its non-spherical surface, helps to minimize spherical aberration, thereby improving image quality and resolution.

The lens is coated with Edmund Optics' standard UV-VIS coating on both the front and back surfaces, enhancing its transmission capabilities within the specified spectrum. This coating also provides protection against environmental factors, ensuring the longevity and durability of the lens.