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Having covered the basic types of lens configurations, as well as, the mechanical parameters used to define a lens shape, we will now discuss how opticians and fabricators characterize the precision of lens surfaces.

Now that we’ve covered the basic type of lens configurations and how, by design, lenses either converge (focus) or diverge light, we can begin to explore the various characteristics that define their physical shape. Overall, there are many parameters that govern the performance of a lens. As previously discussed, it is the specific optical properties of a given material, namely its refractive index and dispersion, that influence light’s behavior when passing between mediums. Opticians build upon these carefully controlled properties by generating highly precise curvature (radii) across the surface of their lenses. By combining this curvature in relation to a...

Dear friends, customers, vendors and competitors, We all know what it’s like to have your business in a groove…or a lull…or even a grind. During Esco’s greatest period of growth, we suffered a devastating tragedy. While we wait for our new facility to be completed, we have found ourselves in an ongoing grind. We have done well to support our continued growth in imperfect conditions, and have made it a point to expand overall market awareness. It has been my main goal to prove to our customers that Esco can handle any situation and rise above it. Since August of 2014, I...

A beginners primer on optical lenses what they do and the physics behind manipulating light with lenses.