This is a G063070322 Plano-Concave Lens, a high-quality optical component sourced from Qioptiq Photonics. The lens, which is mounted, has a diameter of 22.4 mm and a center thickness of 1.5 mm. It is made of N-BK7, a popular glass type known for its excellent optical properties, particularly its high refractive index and low dispersion.
The lens has a focal length (EFL) of -40 mm, indicating that it is a diverging lens, meaning it spreads out light rays. This type of lens is often used in applications where light needs to be spread over a larger area, such as in projectors or beam expanders.
The lens is designed to work with light in the wavelength range of 450-700 nm, which covers the visible light spectrum. This makes it suitable for a wide range of applications, including imaging, illumination, and laser systems.
The lens features a broadband anti-reflection coating on both the front and back surfaces. This coating, identified as 'qio bbar arb2visnbk7', reduces reflection and increases transmission, enhancing the lens' performance in its intended application.