HO-BVL50-1.6B 50mm Dia. N-BK7 Double-Concave Lens; EFL=-80mm BBAR 400-700nm

This is a HO-BVL50-1.6B 50mm diameter N-BK7 double-concave lens, featuring an effective focal length (EFL) of -80mm and broadband anti-reflection (BBAR) coating for the 400-700nm wavelength range. The lens is sourced from Holmarc Opto-Mechatronics, a reputable vendor in the optical industry.

The lens is a Spherical Lens of the Sub Type Spherical Lens (Concave-Concave), with a base shape of Circular. It has a diameter of 50mm and a center thickness of 2.5mm. The radii of curvature for the first and second surfaces are -85.139795mm and 85.139795mm, respectively. The lens does not have an inner or outer radius.

The lens is made of N-BK7 Schott, a popular optical glass with high homogeneity and low auto-fluorescence. The BBAR coating on both the front and back surfaces enhances transmission in the specified wavelength range, minimizing surface reflections.

The lens is designed for a central wavelength of 587.6nm. It is important to note that the coating performance is dependent on the angle of incidence (AOI) and the specific coating applied. In this case, the coating is specified as "hol bbbar 0 aoi," indicating a BBAR coating with a 0-degree AOI.

This lens is a versatile optical component, suitable for various applications that require a double-concave lens with BBAR coating in the visible spectrum. It is currently in stock and available for purchase through the Holmarc Opto-Mechatronics website.