3D image acquisition by fiber-based fringe projection

Tilo Pfeifer; Sascha Driessen

doi:10.1117/12.611570

14 February 2005 3D image acquisition by fiber-based fringe projection

Tilo Pfeifer, Sascha Driessen

Proceedings Volume 5776, Eighth International Symposium on Laser Metrology; (2005) https://doi.org/10.1117/12.611570
Event: Eighth International Conference on Laser Metrology, 2005, Merida, Mexico

Abstract

In macroscopic production processes several measuring methods are used to assure the quality of 3D parts. Definitely, one of the most widespread techniques is the fringe projection. It’s a fast and accurate method to receive the topography of a part as a computer file which can be processed in further steps, e.g. to compare the measured part to a given CAD file. In this article it will be shown how the fringe projection method is applied to a fiber-optic system. The fringes generated by a miniaturized fringe projector (MiniRot) are first projected onto the front-end of an image guide using special optics. The image guide serves as a transmitter for the fringes in order to get them onto the surface of a micro part. A second image guide is used to observe the micro part. It’s mounted under an angle relating to the illuminating image guide so that the triangulation condition is fulfilled. With a CCD camera connected to the second image guide the projected fringes are recorded and those data is analyzed by an image processing system.

Citation Download Citation

Tilo Pfeifer and Sascha Driessen "3D image acquisition by fiber-based fringe projection", Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); https://doi.org/10.1117/12.611570

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