Tiniest 3D-Printed Lenses Made with Femtosecond LasersTiniest 3D-Printed Lenses Made with Femtosecond Lasers
July 12, 2016
Researchers at the University of Stuttgart in Germany have produced the smallest optical lenses ever made using additive manufacturing (AM) processes. Combining the ultra-short laser pulses of a femtosecond laser with optical photoresist, the team created lenses with a diameter and height of only 125 microns (0.125 mm).
The extremely short pulses of the femtosecond laser, which are less than 100 femtoseconds in duration, made such high precision possible. The process can be used to create not only the more typical spherical shaped lenses, but also lenses with free-form optical surfaces.
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