47-699 15 mm Dia. S-BAH11/N-SF10 Achromatic Doublet; EFL=25mm VIS 0° 425-675nm

The 47-699 is a high-quality achromatic doublet lens, boasting a 15 mm diameter and an effective focal length of 25 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 official website.

The lens is constructed from two types of glass: S-BAH11 from Ohara and N-SF10 from Schott. 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 47-699 achieves superior image quality with minimal distortion.

The lens geometry is meticulously designed, with an inner radius of 0 mm, an outer radius of 0 mm, and a center thickness of 6.27 mm. The edge thickness is 6.06 mm, and the radius of curvature for the first and second surfaces are 17.97 mm and -11.2 mm, respectively. The third surface has a radius of curvature of -85.31 mm, contributing to the lens's overall optical performance.

The 47-699 is coated with the EDM VIS-0 standard curve on both the front and back surfaces. This coating enhances the lens's light transmission capabilities and provides protection against environmental factors, ensuring the lens maintains its optical performance over time.