Uniform Illuminators For Inspection

Gordon T. Uber

doi:10.1117/12.942855

12 March 1988 Uniform Illuminators For Inspection

Gordon T. Uber

Proceedings Volume 0850, Optics, Illumination, and Image Sensing for Machine Vision II; (1988) https://doi.org/10.1117/12.942855
Event: Advances in Intelligent Robotics Systems, 1987, Cambridge, CA, United States

Abstract

Glinting and shadowing, problems in lighting three-dimensional objects, can be reduced with uniform illumination. Spherical, hemispherical and ring illuminators are discussed in terms of uniformity, efficiency and practicality. For diffuse surfaces, ring illuminators are satisfactory. For specular surfaces, constant luminance reduces glint and makes the surface visible. High luminance uniformity requires external sources. A high-reflectance integrating enclosure increases both uniformity and the efficiency.

Citation Download Citation

Gordon T. Uber "Uniform Illuminators For Inspection", Proc. SPIE 0850, Optics, Illumination, and Image Sensing for Machine Vision II, (12 March 1988); https://doi.org/10.1117/12.942855

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