45-173 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm MgF2 400-700nm

The 45-173 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and an effective focal length of 40mm. This lens is meticulously crafted from two types of Schott glass, N-BK7 and N-SF5, ensuring superior optical performance. The lens is designed to correct chromatic aberration, making it an ideal choice for applications that require sharp, clear images across a wide spectrum of visible light, specifically within the 400-700nm range.

The lens features a sophisticated geometry, with a thickness of 3.01mm at the edge and varying radii for each glass type. The first radius (r1) is 25.05mm for N-BK7, while the second radius (r2) is -17.27mm for N-SF5. The third radius (r3) is -49.33mm, also for N-SF5. The center thickness is 2.3mm, with an additional 1mm thickness at the back.

The 45-173 lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces, providing excellent transmission and protection against environmental factors. This coating is designed to meet the standard curve requirements, ensuring consistent performance and reliability.

This lens is a multiplet, meaning it is composed of multiple elements. This design allows for more complex optical corrections and enhancements, making the 45-173 a versatile choice for a wide range of applications. The lens is available from Edmund Optics, and the provided weblink indicates that it is currently in stock.