DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
Real Time Autocollimator Device for Aligning Two Surfaces in Parallel.
Patent, Filed 26 May 87, patented 27 Sep 88,
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
This patent discloses a real time autocollimator for measuring parallelism of two surfaces. The autocollimator uses a laser to provide light to first and second beam splitters. A second beam splitter directs dissimilarly polarized light to each surface. This light is reflected to, then recombined by the second beam splitter prior to being redivided by a third beam splitter for comparison at quadrant detectors. Patents. EDC
APPROVED FOR PUBLIC RELEASE