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METHOD FOR PRODUCING OPTICAL ELEMENTS BY WORKING WITH HIGH-ENERGY RADIATION

 
: Heidrich, Sebastian

:
Frontpage ()

DE 102011013514 A: 20110310
Deutsch
Patent, Elektronische Publikation
Fraunhofer ILT ()

Abstract
The present invention relates to a method for producing optical elements (2), in which the surface of a blank (1) is worked by means of high-energy radiation to approximate to a desired surface contour, initially by coarse removal of material. After the coarse removal, the worked surface is polished with high-energy radiation, the surface contour and surface roughness of the surface are optically measured and compared with a desired surface contour and a desired surface roughness. If the measured surface contour or surface roughness deviates from the desired surface contour and desired surface roughness outside predetermined tolerance limits, extremely fine removal of material is performed by means of high-energy radiation until the deviation lies within the predetermined tolerance limits. The method is particularly suitable for the flexible production of optical elements with diameters greater than 1 mm and aspherical or freeform surfaces.

: http://publica.fraunhofer.de/dokumente/N-298104.html