G052211525 12.7 mm Dia. N-BK7 Mounted Double-Convex Lens; EFL=150mm 725-1050nm

This is a high-quality mounted double-convex lens from Qioptiq Photonics, designed for precision optics applications. The lens has a diameter of 12.7 mm and a central thickness of 3 mm, with an edge thickness of 2.7 mm, providing a robust and durable structure.

The lens is made from N-BK7, a popular borosilicate glass known for its excellent optical properties, including a high refractive index and low dispersion. This makes it ideal for use in a wide range of wavelengths, in this case, specifically designed for use in the 725-1050nm range.

The lens features an effective focal length (EFL) of 150mm, which is the distance from the lens's principal point to the focal point when the lens is focused at infinity. This, combined with its double-convex shape, makes it suitable for a variety of imaging and focusing applications.

The lens is coated with Qioptiq's BBAR ARB2NIRNBK7 coating on both the front and back surfaces. This broadband anti-reflection coating reduces surface reflections, improving transmission and enhancing the overall performance of the lens.

The item data also provides information about the radii of the lens surfaces (R1 and R2), which are 153.99 mm and -153.99 mm respectively. However, without additional context, it's challenging to provide a meaningful interpretation of these values.