Design and construction of linear laser encoders that possess high tolerance of mechanical runout

機構典藏 > College of Engineering > Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering > Journal Article > Item 987654321/65290

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Title:	Design and construction of linear laser encoders that possess high tolerance of mechanical runout
Authors:	Lee, Chih-Kung;Wu, Chyan-Chyi;Chen, Shih-Jui;Yu, Liang-Bin;Chang, You-Chia;Wang, Yeong-Feng, Chen, Jau-Yu;Wu, Jeremy Wen-Jong
Contributors:	淡江大學機械與機電工程學系
Date:	2004-11
Issue Date:	2013-05-31 11:43:02 (UTC+8)
Publisher:	Washington, DC: Optical Society of America
Abstract:	A linearly diffracted laser encoder that has high tolerance of head-to-scale misalignment and a high signal-to-noise ratio is described. The preservation of parallelism between the incident and the diffracted beams, which can be attributed to a built-in folded 1× telescope, allows for the high alignment tolerance. It can be shown that, by coupling this newly developed circular polarization interferometer configuration with grating scale geometry optimization, one can eliminate the problems associated with signal distortion that arise from various efficiencies of the p- and the s-polarized light beams and obtain a high signal-to-noise ratio. Both theoretical and experimental results are presented to confirm the improved results and performance.
Relation:	Applied Optics 43(31), pp.5754-5762
DOI:	10.1364/AO.43.005754
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Journal Article

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