14-997 75 mm Dia. N-BK7 Precision Aspheric Lens; EFL=75mm; NA=0.5 Uncoated

This is the 14-997 model from Edmund Optics, a 75 mm Dia. N-BK7 Precision Aspheric Lens with an effective focal length (EFL) of 75mm and a numerical aperture (NA) of 0.5, uncoated.

The lens is made of N-BK7, a popular optical glass from Schott, known for its excellent optical properties and wide transmission range. The lens's base shape is circular, and it has a diameter of 75 mm. The edge thickness of the lens is 4.99 mm, and the center thickness is 25.4 mm.

The lens's geometry is defined by its inner radius, which is 0, and its outer radius, also 0. The back focal length (BFL) is 58.25 mm. The lens's shape is aspheric, with a conic constant of -0.847. The NA is 0.5, and the wavelength is 587.6 nm.

The lens does not come with any coating, as indicated by the 'uncoated' status in the name. However, it is important to note that coatings can be added to enhance the lens's performance, such as improving its transmission range or reducing surface reflections.

This lens is a high-quality, precision optical component, ideal for use in a wide range of applications, including imaging systems, beam shaping, and laser applications. It is currently in stock, as indicated by its valid weblink status.