32-327 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=100mm MgF2 400-700nm

The 32-327 is a high-quality achromatic doublet lens, sourced from the renowned optical component vendor, Edmund Optics. This lens, with a 25 mm diameter, is designed for use in the 400-700nm spectral range, making it suitable for a wide range of optical applications.

The lens is a multiplet, meaning it is composed of multiple optical elements. In this case, it is made up of two different materials: N-BK7 and N-SF5, both from Schott. This combination helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.

The geometry of the lens is carefully designed to optimize its performance. It has an effective focal length (EFL) of 100mm, which is the distance from the lens's principal point to the point at which it focuses parallel rays of light. The lens's edge thickness is 6.61mm, while its center thickness is 6mm, with an 'a' value of 2.5mm. The inner and outer radii are 0, indicating that this lens is a simple meniscus.

The lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission, enhancing the overall performance of the lens. The coating curve is not specified, but it is assumed to be a standard curve suitable for general use.