Light source design for machine vision

Eric J. Sieczka; Kevin G. Harding

doi:10.1117/12.57965

Abstract

There is a lack of commercially available white light sources for machine vision applications. Current commercial sources are typically expensive and primarily designed for workbench use. Because of their benchtop design, these light sources cannot be easily integrated into the inspection system. In most cases a light source must be custom designed and built to suit the needs of the particular machine vision application. The materials being inspected can vary from highly specular to highly diffuse, thus requiring a broad range of illumination levels. Other issues important in machine vision light sources include efficiency, light divergence, spectral content, source size, and packaging. This paper discusses the issues that must be overcome when designing a light source for machine vision applications, and describes the work done by ITI to produce an efficient white light source with computer controlled illumination level.

Citation Download Citation

Eric J. Sieczka, Eric J. Sieczka, Kevin G. Harding, Kevin G. Harding, "Light source design for machine vision", Proc. SPIE 1614, Optics, Illumination, and Image Sensing for Machine Vision VI, (1 March 1992); doi: 10.1117/12.57965; https://doi.org/10.1117/12.57965

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