49-386-INK 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=400mm VIS-NIR 400-1000nm

The 49-386-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 40 mm, is designed for use in the visible to near-infrared spectrum, specifically catering to the wavelength range of 400-1000nm.

The lens is a multiplet, composed of two individual lenses made from different materials: N-BK7 and N-SF5, both from Schott. This combination is strategically chosen to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.

The lens has an effective focal length (EFL) of 400mm, making it suitable for applications that require a long focal length. The geometry of the lens is carefully crafted, with a thickness at the edge of 11.3mm and a center thickness of 8.5mm. The lens also features an inner radius of 0mm and an outer radius of 0mm.

The lens is coated with Edmund Optics' VIS-NIR 0SP2002000 coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the visible to near-infrared spectrum, ensuring optimal light transmission and reducing unwanted reflections.

The 49-386-INK is currently in stock and available for immediate purchase. For more information, including pricing and detailed specifications, please refer to the provided weblink.