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How to Set up Lighting for Measuring Dimensions

How To...
KONICA MINOLTA DIGITAL CAMERA

Everything has to be measured. Quality Control depends on it, certainly, but simple production line logistics demand it.

Fast, accurate measurement of the dimensions of a part or product, is often one of the most critical aspects of your machine vision system.

Problem

A camera’s integrated lighting is a type of direct light which has difficulties in delivering the high contrast needed for the machine vision system to perform a precise calculation.

Solution

Various lighting solutions may be suitable, according to the needs of the task. These solutions may include a backlight.

Backlight: A backlight will generate an intense contrast against a bright background enabling high quality edge detection. By adding a diffusion plate to an assembly of LED bar lights the whole work-piece can be lit to enable a very precise dimensional calculation by the camera.

Low Angle, Diffusion Dome, Square or Parallel: In situations where a backlight is not considered feasible, using one of these other configurations may give the clearest edge detection and/or relief features of the piece.

Tags: backlightdiffusion domelighting for measuring dimensionslow angle

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