10 August 1998 Measuring rotation angles in high speed with laser interference
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In the existing techniques of measuring rotation angel sin high-sped, the resolutions of measuring rotation angles and the rotation velocities are restrictive for each other. In this paper, a neoteric measuring method is proposed, to which the double-frequency heterodyne interference technique and spiral metal reflector were applied, and it could improve the restrict of the rotation velocities.
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Zhigang Fan, Zhigang Fan, Shiwen Xu, Shiwen Xu, Funian Long, Funian Long, Ling Fu, Ling Fu, Chunxia Li, Chunxia Li, "Measuring rotation angles in high speed with laser interference", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); doi: 10.1117/12.318349; https://doi.org/10.1117/12.318349

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