67-266 50mm Dia. UVFS Aspheric Lens; EFL=40mm; NA=0.63 Uncoated

The 67-266 50mm Dia. UVFS Aspheric Lens is a high-quality optical component sourced from Edmund Optics. This lens, with a catalog number 67-266, is designed for use in applications that require a high numerical aperture (NA) and large clear aperture.

The lens is made from UV fused silica (HPFS7980 Corning), a material known for its excellent transparency across a wide spectrum, including the ultraviolet range. This makes the lens suitable for use in UV applications. The lens has a diameter of 50mm and a thickness of 4.07mm at the edge, ensuring rigidity and durability.

The lens's geometry is defined by its inner radius of 0mm, outer radius of 0mm, and effective focal length (EFL) of 40mm. The aspheric design of the lens (with r1 as 18.339mm and r2 as 0mm) provides superior image quality by reducing spherical aberration, a common issue in traditional spherical lenses. The lens has a high numerical aperture (NA) of 0.63, which allows for greater light-gathering capability and improved resolution.

The lens is uncoated, which means it does not have any anti-reflective coatings. While this may result in higher reflective losses, it also means that the lens is less susceptible to damage from environmental factors and handling.

The lens's geometry also includes a large clear aperture, which is beneficial in applications where high light throughput is required. The lens's thickness in the center is 27.5mm, which provides structural integrity and helps minimize optical distortions.