84-126 2 mm Dia. N-PSK53A/N-LASF9 Achromatic Doublet; EFL=6mm VIS 0° 425-675nm

The 84-126 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a 2 mm diameter, is specifically engineered for use in the visible light spectrum, spanning from 425 to 675 nanometers. The lens boasts an effective focal length (EFL) of 6mm, making it suitable for a wide range of optical applications.

The lens is constructed from two types of glass, N-PSK53A and N-LASF9, both from the reputable Schott glass catalog. This combination of materials helps to minimize chromatic aberration, a common issue in optical systems, thereby enhancing the overall image quality.

The 84-126 lens features a standard coating on both the front and back surfaces. This coating, identified as 'edm vis-0 std curve', is designed to optimize performance in the visible light spectrum. It enhances light transmission while reducing surface reflections, thereby improving the overall efficiency and clarity of the optical system.

The lens geometry is another notable feature. It has a center thickness of 1mm, with the edge thickness slightly greater at 1.82mm. The lens curvature is defined by radii of 3.5mm and -3.5mm for the first and second surfaces, respectively, and -14.26mm for the third surface. This complex geometry contributes to the lens's high performance and versatility.