This is a HO-BXL25-04 25mm Dia. N-BK7 Double-Convex Lens, featuring an effective focal length (EFL) of 100mm and a diameter of 25mm. The lens is sourced from Holmarc Opto-Mechatronics, a reputable vendor in the optical industry.
The lens is a Spherical Lens of the Sub Type Spherical Lens (Convex-Convex), with a base shape of Circular. The geometry of the lens includes a thickness edge of 2mm, inner radius of 0mm, and outer radius of 0mm. The radii of curvature are R1: 103.717722mm and R2: -103.717722mm.
The lens is made of N-BK7 Schott, a popular material in the optical industry due to its excellent optical properties. The wavelength for this lens is 587.6nm. The lens does not have any coating, as indicated in the item data.
For more information about this lens, please refer to the vendor's website at https://www.holmarc.com/bi_convex_lenses.php. The link is valid and the lens is in stock as of the last update.