The 88-881-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 25.0mm, is designed for use in the visible light spectrum, specifically at a wavelength of 587.6nm. The lens features a front and back coating of YAG-BBAR, a type of anti-reflective coating that enhances transmission in the 500-1100nm range.
The lens has a thickness of 2.0mm at the edge and 7.01mm at the center, providing a base shape that is circular. The effective focal length (EFL) of the lens is 35.0mm, and the radius of curvature (R1) is 18.11mm. The back focal length (BFL) is 30.42mm, and both the inner and outer radii are 0mm.
The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility. This lens is inked, indicating that it has been marked for identification or tracking purposes.
Please note that the weblink provided is valid and the lens is currently in stock, making it readily available for your optical needs.