WHAT DOES OPTICAL GERMANIUM LENS MEAN?

Plano-convex Ge lenses are flat on 1 facet and convex on another. These lenses Have got a constructive focal length, and tend to be useful for gentle collimation.Believe tiny and Feel detail whenever you grab for a macro lens. These lenses can see Excessive details at a detailed range, so a small objects like electronic circuit elements and chips,