This is a Plano-Concave spherical lens, sourced from CeNing Optics, with a circular base shape and a diameter of 18 mm. The lens has a center thickness of 2 mm and an effective focal length (EFL) of -30 mm, making it a diverging lens. The radius of curvature for the concave surface is -15.56 mm.
The lens is made of N-BK7, a popular glass type in the Schott catalog, known for its excellent optical properties. The wavelength for this lens is 546.1 nm. Notably, this lens does not have any coating, which may affect its performance in certain applications.
The lens's geometry, material, and lack of coating make it suitable for various applications, including but not limited to, imaging systems, beam shaping, and laser applications. However, users should consider these factors when determining the lens's suitability for their specific needs.
For more information and to check the lens's availability, users can visit the vendor's website through the provided link: http://www.cn-optics.com/products/Lenses_PL_CV.asp