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Technique for measuring very small angle changes
- Source :
- Applied optics. 59(27)
- Publication Year :
- 2020
-
Abstract
- A method for making accurate and precise measurements of small angles is described using an interferometer and a test fixture with reference control surfaces. The test is relatively insensitive to test fixture alignment. Typical measurement uncertainties are better than 0.2 arcsec ( 1 σ ). This technique is applicable for verifying the angular stability of opto-mechanical systems that must undergo rigorous environmental testing.
Details
- ISSN :
- 15394522
- Volume :
- 59
- Issue :
- 27
- Database :
- OpenAIRE
- Journal :
- Applied optics
- Accession number :
- edsair.doi.dedup.....92ff85a0448b99814e9185919836c903