47-664-INK 12.5 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=35mm VIS 0° 425-675nm

The 47-664-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 12.5 mm, is designed for use in the visible light spectrum, specifically between 425 and 675 nanometers. The lens boasts an effective focal length (EFL) of 35mm, making it suitable for a wide range of optical applications.

The lens is constructed from two types of glass, N-SK11 and N-SF5, both from the reputable Schott glass catalog. This combination of materials helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. By minimizing this aberration, the 47-664-INK provides clear, sharp images across the entire visible light spectrum.

The lens geometry is carefully designed, with a thickness at the edge of 3.98mm and a center thickness of 3.68mm. This ensures optimal light transmission and minimal distortion. The lens also features a standard curve coating on both the front and back surfaces, further enhancing its performance by reducing unwanted reflections and increasing transmission.

The 47-664-INK is currently in stock and available for immediate purchase through the Edmund Optics website. With its high-quality materials, precise geometry, and advanced coating, this lens is an excellent choice for a wide range of optical applications.