This is the G312331322 optical lens from Qioptiq Photonics, a leading provider of precision optics. The lens is a Plano-Convex type, featuring a spherical shape and a circular base. It has a diameter of 18 mm and a thickness at the edge of 1.7 mm, while the center thickness is 4.5 mm. The effective focal length (EFL) of this lens is 30 mm, making it suitable for a wide range of optical applications.
The lens is made of N-BK7, a high-quality glass material from Schott, known for its excellent optical properties. The wavelength for this lens is 588 nm. It comes with a coating on both the front and back surfaces, specifically the Qio Bbar Arb2visnbk7 coating, which enhances its performance in the 450-700 nm range.
The item data indicates that this lens is in stock and available for immediate purchase. For more detailed information, you can refer to the vendor's website through the provided weblink, which has been verified and found to be valid.