This episode of Through the Lens is dedicated to one man and his lens. Together Dan and Kelley explore the life and work of Augustin Jean Fresnel and the lens that sits in the top of all lighthouses. From his French Revolution Jansenism Catholic upbringing to making functional weapons before age 10, and his development of a lens that sort of kind of already existed; you don't want to miss this episode! Plus you'll learn how Broadway and optical science come together. Also, did you hear the story about the briefcase in Pulp Fiction? Sit back and enjoy this action packed episode of Through the Lens!

Although many materials could be used for photonic applications in the IR. Only a select few are used in IR imaging and optical systems. Join us as we take a look, Through the Lens, at some of the precious and rare materials used in infrared applications. Here's a hint, one of the materials is sapphire and Kelley couldn't help but do a few shallow dives into a few famous sapphires! Learn a little bit about IR applications and the optical materials used as well as how the crown jewels are connected to the American Revolution! All this and more on this episode of Through the Lens!

From military tactical displays to the world of Tron, visors have made major impact on our world.  But how do manufacturers turn a curved piece of plastic into a fully functional visor? What optical coatings can be used to enhance these visors? Join us on this episode of Through the Lens and discover how gold protects pilots and how a couple guys from France transformed the EDM music scene with a few masks. Along the way we'll share technical information, talk about some fun pop culture applications of optical coatings for visors, and share some highly relatable plot lines hidden within blockbuster action movies! Want to learn more? Visit nacl.com!