NDLI: A rotationally symmetric triangulation sensor with low cost reflective optic

Content Provider	IEEE Xplore Digital Library
Author	Ott, P. Jun Gao Eckstein, J. Xiaojia Wang
Copyright Year	2005
Description	Author affiliation: Dept. of Mechatronics & Micro Syst. Eng., Univ. of Appl. Sci., Heilbronn, Germany (Ott, P.)
Abstract	For a growing range of optical measurement task, like gap measurement in automotive industry, traditional triangulation sensors have several disadvantages due to the fact that the measurement result is dependent on the orientation of the sensor because of the non rotational symmetry of the optics. Consequently a design method was proposed in (P. Ott, 2003) for a new class of rotationally symmetric triangulation sensors. Such designs can be realized with aspheric reflection optics and area detectors, such as CCD or CMOS. The optics of the sensor can be extended by an imaging optics which allows at the same time image capturing and distance measurement. In this paper we show measurement results of the first mock-up. This system is based on an optical system of one part manufactured by commercially available diamond turning. The layout of the optical system for distance measurement consists of two reflecting aspheric surfaces. We also present approaches and first results on the algorithm for highly accurate evaluation of the captured data.
File Size	390572
File Format	PDF
ISBN	0780393031
DOI	10.1109/ICIA.2005.1635056
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-27
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Charge coupled devices Costs Optical design Design methodology Optical detectors Distance measurement Optical sensors Optical reflection Rotation measurement Automotive engineering
Content Type	Text
Resource Type	Article

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