47-711 18 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=80mm VIS 0° 425-675nm

The 47-711 is an 18 mm diameter achromatic doublet lens, designed and manufactured by Edmund Optics. This lens boasts an effective focal length (EFL) of 80mm, specifically tailored for the visible light spectrum, spanning 425-675nm. The doublet configuration consists of two components, each made from high-quality N-BK7 and N-SF5 glass materials, sourced from Schott.

The lens geometry is meticulously crafted, featuring a 6.27mm edge thickness, a 5mm center thickness, and a 2.5mm center thickness on the 'a' side. The curvature of the lens is defined by three radii: r1 at 49.67mm, r2 at -34.73mm, and r3 at -100.11mm. The lens does not have an inner or outer radius.

Both the front and back surfaces of the lens are coated with Edmund Optics' standard anti-reflective coating, specifically the EDM VIS-0 STD curve. This coating enhances the lens's performance by reducing surface reflections, thereby increasing transmission and improving overall image quality.

The 47-711 is a multiplet lens, a complex optical system made up of multiple elements. This design allows for superior optical performance, making it suitable for a wide range of applications that require high-quality imaging within the specified wavelength range.

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