G063059525 22.4 mm Dia. N-BK7 Mounted Double-Concave Lens; EFL=-30mm 725-1050nm

This is a G063059525 model double-concave lens, featuring a 22.4 mm diameter and a center thickness of 1.5 mm. The lens is made of N-BK7, a popular optical glass from Schott, known for its excellent optical properties and high damage threshold. The lens's effective focal length (EFL) is -30mm, making it a negative or diverging lens, which spreads out light rays and causes them to diverge.

The lens is designed for use in the wavelength range of 725-1050nm, making it suitable for near-infrared (NIR) applications. It comes with a broadband anti-reflection coating, specifically the Qio Bbar Arb2nirnbk7 coating, on both the front and back surfaces. This coating reduces reflection and increases transmission, enhancing the lens's performance in its designated wavelength range.

The lens's geometry is characterized by its two radii of curvature, R1 and R2, which are -31.396mm and 31.396mm, respectively. These radii determine the lens's concave shape and its optical power. The lens's inner and outer radii are both zero, indicating that the lens is a simple, non-aspherical lens.

This lens is a product of Qioptiq Photonics, a leading vendor in the field of precision optics. According to the vendor, the lens is currently in stock and available for purchase through their website.