63-707-INK 10 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=25mm VIS 0° 425-675nm

The 63-707-INK is a high-quality achromatic doublet lens, boasting a 10 mm diameter and an effective focal length (EFL) of 25 mm, specifically designed for the visible light spectrum ranging from 425 to 675 nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase through their website.

This achromatic doublet is composed of two distinct materials: N-BK7 from Schott and N-SF5 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 63-707-INK achieves superior image quality and color correction.

The lens geometry is meticulously designed, with a diameter of 10 mm, a thickness at the edge of 3.76 mm, and a center thickness of 3.5 mm. The inner and outer radii are 0 mm, indicating a symmetrical design. The first radius of curvature (r1) is 15.37 mm, while the second radius (r2) is -11.1 mm, and the third radius (r3) is -31.47 mm. These radii contribute to the lens's precise optical performance.

The 63-707-INK is coated with EDM VIS-0 STD curve on both the front and back surfaces. This coating enhances the lens's durability and optical performance by reducing surface reflections and improving transmission in the visible light spectrum.