The LA4236-1550 is a Spherical Lens (Plano-Convex) with a base shape of Circular, sourced from the reputable vendor Thorlabs. This lens boasts a diameter of 25.4 mm and a thickness at the edge of 2.1 mm, while the center thickness measures 3.4 mm. The Effective Focal Length (EFL) is 125.4 mm, and the radius of curvature (R1) is 57.5 mm. The Inner Radius is 0, and the Outer Radius is also 0.
This lens is made from UVFS material with the ID "uvfs mal- 1965". It is designed to operate at a wavelength of 587.6 nm. The lens features a V-Coat coating on both the front and back, specifically the "tho v-ar-1550" coating.
For more detailed information, please refer to the vendor's website at https://www.thorlabs.com/thorproduct.cfm?partnumber=LA4236-1550. The link is valid and indicates that the item is in stock.