
This is the PAC031AR.14, a high-quality achromatic doublet lens from MKS/Newport, designed for use in the visible light spectrum, specifically between 430 and 700 nanometers. The lens is a multiplet, meaning it is composed of multiple optical elements, in this case, two, made from N-BK7 and N-SF5 Schott glass.
The lens has a diameter of 12.7 millimeters and a total thickness of 3.7 millimeters at the edge. The inner and outer radii are zero, indicating a circular shape. The effective focal length (EFL) of the lens is 63.5 millimeters. The first and second radii of curvature are -28.477 millimeters and -85.321 millimeters, respectively, while the thickness at the center of the first and second elements is 3 millimeters and 1.5 millimeters, respectively, making the total thickness at the center 4.5 millimeters.
The lens features New AR-14 coatings on both the front and back surfaces, designed to minimize reflection and optimize transmission in the visible light spectrum. This lens is currently in stock and available for immediate purchase through the Newport website.