Technique for aligning optical and mechanical axes based on a rotating linear grating.

Details Technique for aligning optical and mechanical axes based on a rotating linear grating. Technique for aligning optical and mechanical axes based on a rotating linear grating.

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995opten..34.2840m&link_type=abstract

Opt. Eng., Vol. 34, No. 10, p. 2840 - 2845

Physics

4

Optical Systems: Alignment

Scientific paper

The authors describe a technique for aligning the axis of an optical system with the axis of a rotating mechanical system. The optical system is focused onto a linear grating that rotates in conjunction with the mechanical system. Light reflected from the grating produces an interference pattern in the pupil of the optical system. Temporal modulation of the fringes in the interference pattern is observed as the mechanical system rotates if the optical and mechanical axes are misaligned. Experimentally the authors demonstrate alignment to better than 0.1 μm.

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