Accuracy of freeform manufacturing processes

conference paper
2009
Gubbels, G.P.H.

Venrooy, B.W.H.

Henselmans, R.
The breakthrough of freeform optics is limited by manufacturing and metrology technology. However, today's manufacturing machines like polishing robots and diamond turning machines are accurate enough to produce good surface quality, so the question is how accurate can a freeform be produced. To investigate how accurate freeform optics can be diamond turned, measurable freeforms (e.g. an "off-axis" sphere) were diamond turned and they were compared to there on-axis equivalents. The results of this study are described in this paper. Furthermore, an overview of the accuracies of freeform optics that TNO diamond turned are presented. An indication of freeform accuracy for diamond turned optics is derived from this, which can be used for optical designers as a guideline in their design work. © 2009 SPIE.
Topics
AccuracyAluminiumDiamond turningFreeform opticsAccuracyAluminiumDesign workDiamond turned opticsDiamond turningDiamond turning machinesFreeform opticsFreeformsManufacturing machineManufacturing processOff-axisOptical designersPolishing robotsSurface qualitiesAluminumManufactureTurningDiamonds
TNO Identifier
242587
Repository link
https://resolver.tno.nl/uuid:70337035-1666-4d3f-ae06-fa1760b617d3
ISSN
0277786X
ISBN
9780819477163
Article nr.
742607
Source title
Optical Manufacturing and Testing VIII, 4 August 2009 through 5 August 2009, San Diego, CA. Conference code: 77568
Editor(s)
Burge, J.H.
Fähnle, O.W.
Williamson, R.
Files
Download gubbels-2009-accuracy.pdf