When light moves from air into glass or plastic it is refracted close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ...

Creator Optics can manufacture high-quality sapphire lenses. The main types are plano convex lenses, doubel convex / Bi-convex lenses, plano convex cylindrical lenses and hemispheric lenses. Sapphire ...

Physicists have demonstrated a new type of tunable liquid lens whose focus can be changed simply by varying the pressure on it. The lens is formed from the curved interface between a liquid and air at ...