47-736 20 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm VIS 0° 425-675nm

The 47-736 is a high-quality achromatic doublet lens, boasting a 20 mm diameter and an effective focal length (EFL) of 60 mm, specifically designed for the visible light spectrum ranging from 425 to 675 nm. This lens is sourced from the reputable optical vendor, Edmund Optics, and is available for purchase through their website.

The lens is constructed from two types of Schott glass: N-BK7 and N-SF5. These materials are carefully selected to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. By combining these materials, the 47-736 achieves superior image quality and color correction.

The lens geometry is meticulously designed, with a central thickness of 5 mm and edge thickness of 4.98 mm. The first and second radii of curvature are 35.92 mm and -28.12 mm, respectively, while the third radius of curvature is -83.79 mm. These parameters contribute to the lens's overall performance and optical characteristics.

The 47-736 is coated with Edmund Optics' standard Vis-0 coating on both the front and back surfaces. This coating is specifically designed to optimize performance within the visible light spectrum, further enhancing the lens's color correction capabilities and overall image quality.