This is the HO-PXL50-02 50mm Dia. N-BK7 Plano-Convex Lens, a high-quality optical component sourced from Holmarc Opto-Mechatronics. The lens, which has a diameter of 50mm, is designed with a plano-convex geometry, featuring a flat surface on one side and a curved surface on the other. The curvature of the lens is defined by a radius of 52.162mm, making it a versatile tool for various optical applications.
The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is often used in high-precision applications due to its low coefficient of thermal expansion and its high Abbe number, which contributes to low chromatic dispersion. The lens's effective focal length (EFL) is 100mm, making it suitable for use in systems where a longer focal length is required.
Notably, this lens is uncoated. While coatings can be applied to lenses to reduce reflection, increase transmission, or provide other benefits, an uncoated lens can be advantageous in certain situations. For instance, uncoated lenses can be more cost-effective and are often more resistant to damage from environmental factors.
For more information about this lens, including its availability and potential applications, please refer to the vendor's website at https://www.holmarc.com/plano_convex_lenses.php.