AC080-016-C 8 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=16mm 1050-1700nm

The AC080-016-C is an unmounted achromatic doublet lens, part of Thorlabs' extensive catalog of optical elements. This lens boasts a diameter of 8 mm and an effective focal length (EFL) of 16 mm, specifically designed for use within the spectral range of 1050-1700 nm.

The lens is composed of two distinct materials, N-LAK22 and N-SF6, both from Schott. These materials are carefully selected to minimize 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 short and long wavelengths to the same point, providing superior image quality.

The lens geometry is intricately designed with a range of radii and thicknesses to optimize its performance. The edge thickness is 3.8 mm, while the center thicknesses are 3.5 mm and 1.3 mm. The lens features three radii of curvature: r1 at 7.5 mm, r2 at -7.8 mm, and r3 at 68.5 mm. The inner and outer radii are both zero, indicating a circular shape.

The lens is coated with THo AC1050-1700-C, a specialized coating developed by Thorlabs, on both the front and back surfaces. This coating enhances the lens's performance within the specified spectral range, further improving image quality and reducing unwanted reflections.