This is a G052307322 12.7 mm Dia. N-BK7 Mounted Plano-Concave Lens, specifically designed for use in the visible light spectrum, with a center wavelength of 588nm. The lens is sourced from Qioptiq Photonics, a renowned vendor in the field of precision optics.
The lens is of the Spherical type, with a Sub Type of Plano-Concave and a Base Shape of Circular. It has a diameter of 12.7mm and a center thickness of 1.5mm. The Effective Focal Length (EFL) of this lens is -30mm, indicating that it is a diverging lens, causing incoming light rays to spread out.
The lens is made from N-BK7, a popular glass type in the optical industry due to its excellent optical properties and wide transparency range. The lens is coated with qio bbar arb2visnbk7 on both the front and back surfaces, which enhances its performance in the 450-700nm range.
The item data also provides the radii of curvature for the lens, with r1 being -15.51mm. The Inner and Outer Radii are both 0, indicating that this lens is a meniscus lens with a concave shape.