45-135 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=30mm MgF2 400-700nm

The 45-135 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and a focal length of 30mm. This lens is meticulously crafted from two types of Schott glass, N-BK7 and N-SF5, which are renowned for their exceptional optical properties. The lens is designed to correct chromatic aberration, ensuring sharp and clear images across the visible spectrum, specifically within the 400-700nm range.

The lens features a sophisticated geometry, with a thickness of 2.8mm at the edge and varying radii (r1: 18.11mm, r2: -13.51mm, r3: -39.29mm) to optimize image quality. The center thickness is 2.3mm, while the center thickness 'a' is 0.9mm, providing a robust and stable platform for optical systems.

The 45-135 lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces, ensuring high transmission and durability. This coating is designed to provide a standard curve, offering a balance between cost and performance.

This lens is a multiplet, meaning it is composed of multiple elements. This design allows for more complex optical corrections, making it suitable for a wide range of applications where high image quality is paramount. The lens is available from Edmund Optics, and the provided weblink indicates that it is currently in stock.