47-647 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=250mm VIS 0° 425-675nm

The 47-647 is a high-quality achromatic doublet lens, boasting a 25 mm diameter and an effective focal length of 250mm, specifically designed for the visible light spectrum ranging from 425 to 675nm. 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: N-BK7 from Schott and N-SF5 from Schott. These materials are carefully selected to minimize chromatic aberration, a common issue in lens systems where different wavelengths of light are focused at different points. By combining these materials, the 47-647 achieves superior image quality and color correction.

The lens geometry is meticulously designed, with an inner radius of 0mm, an outer radius of 0mm, and a center thickness of 5mm. The edge thickness is 6.75mm, and the lens features a standard curvature coating on both the front and back surfaces. This coating enhances the lens's durability and performance by reducing surface reflections and improving light transmission.

The 47-647 is a multiplet lens, meaning it is composed of multiple elements. This design allows for more precise control over optical properties, resulting in improved image quality and increased versatility. The lens is currently in stock and available for immediate purchase, making it an ideal choice for users seeking a reliable and high-performing optical component.