47-708-INK 18 mm Dia. N-SSK8/N-SF10 Achromatic Doublet; EFL=50mm VIS 0° 425-675nm

The 47-708-INK is an 18 mm diameter achromatic doublet lens, sourced from Edmund Optics, designed for visible light applications within the 425-675nm spectrum. This lens boasts an effective focal length (EFL) of 50mm, making it suitable for a wide range of optical systems.

The lens is composed of two elements, the first made from N-SSK8 Schott glass and the second from N-SF10 Schott glass. This combination helps to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The achromatic design ensures that the lens focuses both red and blue light to the same point, improving image quality and clarity.

The lens has 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, improving light transmission and reducing ghosting and flare.

The lens geometry includes a thickness of 5.69mm at the edge, with a central thickness of 5mm and a central thickness 'a' of 2.3mm. The lens has a base shape of a circle and is a multiplet in design.

The lens is currently in stock and available for purchase through the Edmund Optics website. For more detailed specifications and performance data, please refer to the provided weblink.