47-654 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=27mm VIS 0° 425-675nm

The 47-654 is a high-quality achromatic doublet lens, sourced from Edmund Optics, featuring a 9 mm diameter and an effective focal length of 27 mm. This lens is specifically designed for the visible spectrum, covering a wavelength range of 425-675 nm. The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring excellent optical performance.

The lens geometry is meticulously designed, with a thickness of 4.26 mm at the edge and 3.89 mm at the center, providing robust structural integrity. The first and second radii of curvature are 15.36 mm and -12.01 mm, respectively, while the third radius of curvature is -39.56 mm. The lens features a standard coating on both the front and back surfaces, specifically the EDM VIS-0 std curve coating, which enhances its optical performance.

This lens is a multiplet, meaning it is composed of multiple elements, which allows for superior optical correction. The lens is currently in stock and available for immediate purchase through the provided weblink. With its high-quality construction, broad wavelength coverage, and precise geometry, the 47-654 is an excellent choice for a wide range of optical applications.