This is the G052311331 12.7 mm Dia. N-BK7 Mounted Plano-Concave Lens, a high-quality optical component sourced from Qioptiq Photonics. The lens, which has a negative focal length (EFL) of -500mm, is designed for use in a variety of optical systems where a concave lens is required.
The lens is made from N-BK7, a popular optical glass type known for its excellent optical properties and wide transmission range. It has a diameter of 12.7 mm and a center thickness of 1.5 mm, making it suitable for use in compact optical systems. The lens is coated with Qio AL RALVIS AOI 45 on both the front and back surfaces, which enhances its transmission characteristics and reduces unwanted reflections.
The Plano-Concave shape of the lens is spherical, with a radius of curvature (R1) of -260.39 mm on the concave surface. The lens does not have an inner or outer radius, as it is a simple plano-concave design.
This lens is currently in stock and available for purchase on the Qioptiq Photonics website. For more information, including detailed specifications and pricing, please visit the following link: https://www.qioptiq-shop.com/en/Precision-Optics/Singlets/Plano-Concave-Lenses/Plano-concave-lenses-mounted-N-BK7.html