The Edmund Optics part number 45-154 refers to a 50.0mm diameter, 250.0mm focal length, magnesium fluoride (MgF₂) coated plano-convex (PCX) lens. The MgF₂ coating provides an anti-reflective surface optimized for the 400–700nm wavelength range, reducing reflectance to approximately 1.75% per surface.
Plano-convex lenses are designed to focus, collect, and collimate light in various optical applications. The 250.0mm focal length of this lens makes it suitable for applications requiring moderate focusing power.



