ACN127-025-A 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-25mm 400-700nm

The ACN127-025-A is a high-quality unmounted achromatic doublet lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens is designed for use in the 400-700nm wavelength range, making it suitable for a wide array of applications within the visible light spectrum.

The lens features a base shape of a circle, with a diameter of 12.7mm, providing a substantial surface area for light transmission. The geometry of the lens is intricately designed, with an edge thickness of 5.4mm, and a center thickness of 1.5mm for the first surface and 2.5mm for the second surface. The lens's inner and outer radii are 0mm, indicating a symmetrical design. The lens's first surface has a radius of curvature of -16.9mm, while the second surface has a radius of curvature of 16.5mm, and the third surface has a radius of curvature of 97.7mm.

The lens is composed of two types of materials, namely N-BAF10 and N-SF6HT, both from Schott. These materials are known for their excellent optical properties, ensuring high-fidelity light transmission. The lens is coated with Thorlabs' proprietary AC400-700-A coating on both the front and back surfaces, further enhancing its optical performance and durability.

The lens is classified as a multiplet, indicating that it is composed of multiple optical elements. This design allows for the correction of chromatic aberrations, ensuring that the lens delivers sharp, clear images across the entire spectral range.