This is a HO-BXL12.5-2.4 12.5mm Dia. N-BK7 Double-Convex Lens, with an effective focal length (EFL) of 30mm, sourced from Holmarc Opto-Mechatronics. The lens is uncoated, which means it does not have any additional layers to protect or enhance its optical properties.
The lens is a Spherical Lens of the Sub Type Spherical Lens (Convex-Convex), with a base shape of Circular. The diameter of the lens is 12.5mm, and the thickness at the edge is 2.4mm. The inner and outer radii are both 0mm, indicating a symmetrical lens.
The lens is made of N-BK7, a type of glass commonly used in optical applications due to its excellent optical properties. The wavelength for this lens is 587.6nm.
Please note that this lens is uncoated, which means it may be more susceptible to environmental factors and may not perform as well in certain applications as coated lenses. However, uncoated lenses can be more cost-effective and are often sufficient for many applications.
For more information about this lens, including its availability and pricing, please refer to the vendor's website or contact them directly.