This is a 12.7 mm diameter N-BK7 mounted double-concave lens, specifically designed for use in the 725-1050nm wavelength range. The lens is manufactured by Qioptiq Photonics, a leading vendor in the field of precision optics.
The lens features a base shape of a circle and is constructed with a spherical geometry. The first radius of curvature (R1) is -52.33, while the second radius (R2) is also -52.33, indicating a symmetric concave-concave design. The effective focal length (EFL) of this lens is -50mm, making it a powerful tool for focusing or diverging light in various optical systems.
The lens is made from N-BK7, a high-quality borosilicate glass known for its excellent optical properties. This material is particularly suitable for applications in the near-infrared spectrum. The lens has a center thickness of 1.5mm, providing a good balance between mechanical strength and optical performance.
The lens is coated with Qio Bbar Arb2nirnbk7 on both the front and back surfaces. This coating is specifically designed to enhance the lens' performance in the 725-1050nm wavelength range, reducing reflection and increasing transmission.
According to the vendor's information, this lens is currently in stock and can be purchased directly from the Qioptiq Photonics website. The provided weblink leads directly to the product page for easy access.