87-978 10mm Dia. UVFS Aspheric Lens; EFL=10mm; NA=0.5 UV 250-425nm

The 87-978 is a high-quality aspheric lens, 10mm in diameter, with a numerical aperture (NA) of 0.5, specifically designed for use in the ultraviolet (UV) spectrum, between 250 and 425nm. This lens is sourced from Edmund Optics, a leading vendor in the optical industry, and is available for purchase on their website.

The lens is made from UV fused silica, a material with a high transmission rate in the UV range, making it ideal for UV applications. The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional spherical lenses, which can lead to distorted images. This makes the 87-978 particularly suitable for applications that require high precision and resolution.

The lens has an effective focal length (EFL) of 10mm, which is the distance from the lens's principal point to its focal point. This EFL, combined with the lens's NA, allows for a relatively wide field of view while maintaining a small form factor. The lens also features a thickness of 2.77mm at the edge and 6mm at the center, providing structural rigidity and resistance to deformation.

The 87-978 is coated with a UV coating, specifically designed for the 250-425nm range, which further enhances its UV transmission capabilities. This coating is applied to both the front and back surfaces of the lens, ensuring optimal performance regardless of the direction of light propagation.