A New Grating Non-Diffracting Structured Light for Three Dimensional Shape Measurement


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A new method of actualizing grating non-diffracting structured light (GNSL) is proposed. The GNSL holds characters of long focal-depth, narrow strip-width, steady light field and constant light intensity in certain rang etc. Based on precise triangular-section prism, an optical system is designed and actualized experimentally. With theory analysis and calculation to the optical system, the distribution of the light intensity is simulated in non-diffracting range. Experiment results show that simulation is in good agreement with the theory calculation. According to system parameters, GNSL with 18um strip-width and 57cm non-diffracting range is produced in experimental system. Compared with traditional projected light source, GNSL has advantages of high resolution and high precision in the application of three dimensions (3D) shape measurement. By using GNSL, matching ambiguity could be reduced.



Advanced Materials Research (Volumes 139-141)

Edited by:

Liangchi Zhang, Chunliang Zhang and Tielin Shi






L. Z. Chen et al., "A New Grating Non-Diffracting Structured Light for Three Dimensional Shape Measurement", Advanced Materials Research, Vols. 139-141, pp. 2010-2014, 2010

Online since:

October 2010




[1] S. Hsu, S. Acharya, A. Rafii and R. New: Performance of a time-of-flight range camera for intelligent vehicle safety applications. Advanced Microsystems for Automotive Applications, 2006. pp.205-219.

DOI: 10.1007/3-540-33410-6_16

[2] J. Davis, R. Ramamoorthi and S. Rusinkiewicz: Spacetime stereo: a unifying framework for depth from triangulation. IEEE Trans Pattern Anal Mach Intell, Vol. 27 (2005) No. 2, pp.1-7.

DOI: 10.1109/tpami.2005.37

[3] J. Batlle, E.M. Mouaddib and J. Salvi: Pattern codification strategies in structured light systems. Pattern Recognition, Vol. 37 (2004), pp.827-849.

DOI: 10.1016/j.patcog.2003.10.002

[4] Z. Wen, Z.L. Ping and X. Long: A non-diffraction structured light introduction. Optical instruments, Vol. 27 (2005)No. 2, p.32~36. (In Chinese).

[5] S. Boveriea, M. Devyb and F. Lerasleb: Comparison of structured light and stereovision sensors for new airbag generations. Control Engineering Practice, Vol. 11 (2003), pp.1413-1421.

DOI: 10.1016/s0967-0661(03)00137-0

[6] W. Georg: High resolution measurement of phase-shift amplitude and numeric object phase calculation. Proceedings of SPIE - The International Society for Optical Engineering (San Diego, CA, USA, July 30 - 31, 2000). Vol. 4117, pp.289-299.

[7] S. Zhang: Recent progresses on real-time 3D shape measurement using digital fringe projection techniques. Optics and Lasers in Engineering, Vol. 48 (2010), pp.149-158.

DOI: 10.1016/j.optlaseng.2009.03.008

[8] Y. Gao, X. Liu: Noise immune unwrapping based on phase statistics and self-calibration. Optics and Lasers in Engineering, Vol. 38 (2002).

DOI: 10.1016/s0143-8166(02)00023-4

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