47-671-INK 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=90mm VIS 0° 425-675nm

The 47-671-INK is a high-quality achromatic doublet lens, sourced from the renowned optical component 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 90mm, making it suitable for a wide range of optical applications.

The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, a leading manufacturer of optical glass. This combination helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The achromatic design ensures that the lens focuses both red and blue light to the same point, providing sharper images.

The lens geometry is carefully designed with a center thickness of 1.98 mm and an edge thickness of 3.06 mm. The inner and outer radii are 0 mm, indicating a flat surface. The lens's shape is a multiplet, which is a combination of multiple lenses to achieve specific optical properties.

The lens is coated with the EDM VIS-0 STD curve on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving image quality.

The lens is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website using the provided weblink.