The Influences Of Several Parameters Of Grating Sensor On The Modulation Depth Of Moire Signal Under Incoherent Illumination

Pan Yin-jun; Huang Shang-lian

doi:10.1117/12.952388

16 July 1986 The Influences Of Several Parameters Of Grating Sensor On The Modulation Depth Of Moire Signal Under Incoherent Illumination

Pan Yin-jun, Huang Shang-lian

Author Affiliations +

Proceedings Volume 0599, Optics in Engineering Measurement; (1986) https://doi.org/10.1117/12.952388
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

In this paper, the theoretical expressions of modulation depth of moire signal under the incoherent illumination are derived. It follows as a concequence that, the modulation depth of moire signal is in relation to the following factors: the geometric share and size of light source, the diffraction effect of grating,which relates to the line numbers of grating, the line and space ratio, the gap of grating pairs, the geometric shape and size of receiving window, etc. In addition, the influences of grating fair on the period and inclination of moire fringes under the noncollimated illumination are discussed, and the comparisons of the changes of modulation depth of moire signals and the noncollimated illumination with that under the collimated illumination are made. Finally, some exoeriment results are given to verify the theoretical expressions. This parer is useful to the actual design of grating sensors.

Citation Download Citation

Pan Yin-jun and Huang Shang-lian "The Influences Of Several Parameters Of Grating Sensor On The Modulation Depth Of Moire Signal Under Incoherent Illumination", Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); https://doi.org/10.1117/12.952388

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