G311339331 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=40mm

This is a high-quality lens from Qioptiq Photonics, a renowned vendor in the field of precision optics. The lens, identified as G311339331, is a double-convex spherical lens with a base shape of a circle. It has a diameter of 31.5 mm, making it suitable for a wide range of optical applications.

The lens has a center thickness of 8.3 mm and an edge thickness of 2.1 mm, providing a robust structure and ensuring optimal performance. The effective focal length (EFL) of this lens is 40 mm, which is a common choice for many optical systems due to its versatility.

The lens is made of N-BK7, a popular material in the optical industry, known for its excellent optical properties. This material is identified in the item data as "n-bk7 schott", indicating its specific type and origin.

The lens is coated with Qio AL RALVIS AOI 45 on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency of the optical system.

The item data also indicates a wavelength of 587.6 nm, suggesting that this lens is designed to operate effectively in this specific wavelength range. This makes it suitable for applications such as laser systems, spectroscopy, and imaging systems that operate in this wavelength range.