HO-BVL25-1.6C 25mm Dia. N-BK7 Double-Concave Lens; EFL=-40mm Single Layer MgF2

The HO-BVL25-1.6C is a high-quality double-concave lens offered by Holmarc Opto-Mechatronics, a renowned vendor in the optical industry. This lens, with a base shape of a circle, is designed for use in a wide range of optical applications.

The lens has a diameter of 25mm and a center thickness of 2.5mm, making it compact and suitable for various setups. The effective focal length (EFL) of this lens is -40mm, indicating its concave nature. This negative focal length makes it ideal for use in applications where a diverging lens is required.

The lens is made from N-BK7, a popular glass type in the optical industry known for its excellent optical properties. This material is often chosen for its high Abbe number, low auto-fluorescence, and excellent transmission in the visible and near-infrared regions.

The lens features a single layer of MgF2 coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission, thereby enhancing the overall performance of the lens. The coating is applied at 0 degrees angle of incidence (AOI), ensuring uniform coverage and high-quality performance.

The geometry of this lens is defined by its two radii of curvature, R1 and R2, which are -42.771859mm and 42.771859mm respectively. These radii, combined with the lens material and coating, contribute to the lens's excellent optical performance.

This lens is designed to operate at a wavelength of 587.6nm, making it suitable for applications in this spectral region. The lens is currently in stock and available for immediate purchase, as indicated by its valid web link status.