35-996 50 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=150mm UV-VIS 345-700nm

The 35-996 is a high-quality achromatic doublet lens, boasting a 50 mm diameter and an effective focal length of 150mm. This lens is designed for use in the UV-VIS spectrum, specifically between 345-700nm, making it ideal for a wide range of applications that require precise optical performance in this spectral range.

The lens is constructed from two types of glass, N-FK5 and F2HT, both from the reputable Schott brand. This combination helps to correct chromatic aberration, a common issue in optical systems, ensuring that the lens delivers sharp, clear images. The lens also features a standard UV-VIS coating from Edmund Optics on both the front and back surfaces, further enhancing its performance and durability.

The geometry of the lens is carefully designed to optimize its optical performance. It has a thickness of 10.74mm at the edge, with the inner and outer radii being 0mm. The first radius of curvature (r1) is 80.42mm, while the second (r2) is -71.1mm, and the third (r3) is -245.23mm. The center thickness of the lens is 11mm, with an 'a' value of 5mm.

This lens is a multiplet, meaning it is composed of multiple elements. This design allows for more complex optical corrections to be made, enhancing the lens's overall performance. The lens is available from Edmund Optics, and the web link provided indicates that it is currently in stock.