Optical lenses are needed in any optical systems. Lenses can be used in a variety of applications including in research, industrial, medical and consumer optics. Some specific uses include lenses in high power laser collimators and for focusing optics for head-up-displays, binoculars, microscopes (eye-piece lenses for microscopes), sports optics (rifle sight), sensors, digital projection, cameras, laser projection, bar code scanning, holography, optical information processing and computing, and medical applications.
To obtain the best light transmission in the optical device, the content of Fe, Ti, Cr, Ni, Mn, Cu etc. should be as low as possible in the glass. High purity or synthetic quartz glass meet these requirements most easily.
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