Influence of the Size of Round Objects on the Output Signal of Laser Measuring Scanner

Ryszard Jabłoński

doi:10.4028/www.scientific.net/KEM.295-296.209

Paper Titles

Laser Feedback Interferometers Based on Orthogonally Polarized He-Ne Lasers
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A Two-Color Heterodyne Interferometer Based on Diffraction Grating for Displacement Measurement
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A New Method for the Development of Frequency Standards for the Optical Wavelength Range of 243nm
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Optical Measurement Technologies and Systems for Industrial Applications
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Influence of the Size of Round Objects on the Output Signal of Laser Measuring Scanner
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A Study on the Multi-Wavelength Drop Analysis Technology
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Accurate Estimation of Phase Distribution on Reference Plane in Grating Projection Measurement
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Measurement of Core Position of Fiber Array by a Calibrated Mask Method
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Detection of Random Defects on Highly Reflective and Complex Surfaces
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Influence of the Size of Round Objects on the Output Signal of Laser Measuring Scanner

Abstract:

In laser measuring scanners, in addition to the ideal output signal, interfering signals occur. They are due to superimposition of diffracted, reflected, scattered, incident, transmitted and interfering light. The proportions between the mentioned components vary in time and also the total intensity distribution changes. Having the above in view, a close analysis of detector signal was carried out. It was proved that for certain beam parameters the intensity distribution pattern depends on the geometry of object and the real dimension of an object can be calculated by introduction of the size dependent correction.