Structured light in visual inspection

Constantin Blanaru; Virgil V. Vasiliu

doi:10.1117/12.312716

2 July 1998 Structured light in visual inspection

Constantin Blanaru, Virgil V. Vasiliu

Proceedings Volume 3405, ROMOPTO '97: Fifth Conference on Optics; (1998) https://doi.org/10.1117/12.312716
Event: ROMOPTO '97: Fifth Conference on Optics, 1997, Bucharest, Romania

Abstract

When a processed part is visually inspected along a projected line of several meters in length, generated by adequate cylindrical optics, the gaussian beam intensity profile along line length will create problems given by the fading edges of the intensity profile, the variation of the light level across the line and the presence of `hotspot' in the center of the line. In order to avoid these problems, we used the structured light generated by a special developed laser diode producing a non- gaussian (evenly illuminated) distinct line. The visibility of the projected line in real working conditions, depth of field and focusing performances of the beam are presented, as they have been evaluated.

Citation Download Citation

Constantin Blanaru and Virgil V. Vasiliu "Structured light in visual inspection", Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); https://doi.org/10.1117/12.312716

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