62-495-INK 25 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-150mm VIS 0° 425-675nm

The 62-495-INK is a 25 mm diameter Negative Achromatic Doublet lens, sourced from Edmund Optics. This lens is specifically designed for visible light applications, with a wavelength range of 425-675nm. The lens boasts an effective focal length (EFL) of -150mm, making it suitable for a variety of optical systems.

The lens is composed of two materials: N-BK7 and N-SF5, both from Schott. The N-BK7, a borosilicate crown glass, is known for its excellent optical properties and durability. The N-SF5, a fluorite crown glass, offers low dispersion and high transmission, making it ideal for achromatic applications.

The lens features a standard curvature coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating helps to reduce surface reflections and increase transmission, thereby enhancing the overall performance of the lens.

The lens geometry includes a thickness of 7.73mm at the edge, with no inner or outer radius specified. The center thickness is 2.5mm, and the thickness at the center a is 4.06mm. The lens is designed in a circular shape, with a multiplet configuration.

The lens is currently in stock and available for purchase through the provided weblink. Detailed specifications and additional information can be found on the vendor's website.