A diamond mill (a tiny end mill) can cut aspheric lenses and mirrors with diameters smaller than 0.5 mm. The cutting tool has a two-dimensional shape and is spun about the axis of the surface to be cut. As the spinning tool is plunged into the substrate, it cuts a radially symmetric surface to sub-micron accuracies. Commercially available circular diamond tools can be modified to aspheric shapes using a focused ion beam. Fabrication examples will be presented and the optical performance of an array of micro-lenses will be described.
Diamond milling of micro-optics
IEEE Aerospace and Electronic Systems Magazine ; 23 , 1 ; 13-17
01.01.2008
3192363 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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