Lightweighting large optics with abrasive waterjets

Details Lightweighting large optics with abrasive waterjets Lightweighting large optics with abrasive waterjets

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3430..304m&link_type=abstract

Proc. SPIE Vol. 3430, p. 304-312, Novel Optical Systems and Large-Aperture Imaging, Kevin D. Bell; Michael K. Powers; Jose M. Sa

Physics

Optics

Scientific paper

A new approach to lightweighting large optics using the abrasive waterjet (AWJ) milling process has been developed and has demonstrated that significant weight reductions in glass face sheets can be achieved. The AWJ glass milling process has been developed to offer a safe and low cost machining alternative over conventional methods that are considered a high risk machining process. The lightweighting approach has been oriented towards precise controlled depth milling of isogrid pattern pockets in the back side of optic face sheets. The AWJ milling process has been successfully applied to lightweighting a wide range of materials; such as ULE, Zerodur, Fused Silica, Fused Quartz, and Pyrex, with part sizes ranging from 70 mm (3 inches) in diameter to in excess of 2 meters (80 inches) in diameter.

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