27 May 1982 Optical Angle Marker
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Proceedings Volume 0330, Optical Systems Engineering II; (1982) https://doi.org/10.1117/12.934263
Event: 1982 Los Angeles Technical Symposium, 1982, Los Angeles, United States
The Optical Angle Marker is a double mirror device, consisting of two first surface flats, and is used together with an autocollimator. The two mirrors are aligned with their faces nearly parallel. When the mirror assembly is rotated in azimuth relative to the autocollimator, a series of return images, spaced at equal angular intervals, can be viewed. In this way, the angular range of an autocollimator may be extended by a factor of six or more, depending on size and quality of the flat mirrors. Experimental data is described in this paper.
© (1982) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert J. Magee, "Optical Angle Marker", Proc. SPIE 0330, Optical Systems Engineering II, (27 May 1982); doi: 10.1117/12.934263; https://doi.org/10.1117/12.934263

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