Physics – Optics
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3782..627q&link_type=abstract
Proc. SPIE Vol. 3782, p. 627-636, Optical Manufacturing and Testing III, H. Philip Stahl; Ed.
Physics
Optics
Scientific paper
The Long Trace Profiler has become the instrument of choice for mirror surface figure test and slope error measurement of synchrotron radiation and x-ray astronomy optics. In order to achieve highly accurate measurements with the LTP, systematic errors need to be reduced by precise angle calibration and accurate focal plane position adjustment. A self-scanning method is presented to adjust the focal plane position of the detector with high precision by use of a pentaprism scanning technique. The focal plane position can be set to better than 0.25 mm for a 1250 mm focal length FT lens using this technique. The use of a 0.03 arc second resolution theodolite coupled with the sensitivity of the LTP detector system can be used to calibrate angular linearity error very precisely. Some suggestions are introduced for reducing the system error. With these precision calibration techniques, accuracy in the measurement of figure and slope error on meter-long mirrors is now at a level of about 1 (mu) rad rms within whole testing range of the LTP.
Qian Shinan
Sostero Giovanni
Takacs Peter Z.
No associations
LandOfFree
Precision calibration and systematic error reduction in the long trace profiler does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Precision calibration and systematic error reduction in the long trace profiler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precision calibration and systematic error reduction in the long trace profiler will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1513535