SURFACE INSPECTION

Left: image of clear acrylic sheet with contamination is used as input.

Right: 77 pieces of contamination are detected which is accounted as 0.11% of the area. The biggest contamination is 0.89 mm with size of 0.015 sqr. mm. (The images area cropped for illustration.)

Introduction

In the production line where thousands products were made daily and continuously, complete inspection in not feasible, but only few sample were inspected, and the inspectors need tools to assist on such task of counting tiny contaminations. Machine vision can assist on this task to secure the standard among inspectors and guarantee the best quality. In addition, in-line solution with line scan cameras can perform a complete / total inspection on your products and keep statistics for further analysis.

Application

• Continuous plastic web
• Clear surface
• Solid color surface
• Metallic surface
• Paper
• Textile
• Glass

Sample Setup*

Image System

• 4096 pixel 26 KHz line scan camera
• External trigger: rotary encoder
• Bar light

Web

• Maximum speed: 5 m/s

Inspection

• Coverage width: 80 cm/camera
• Minimum defect size: 0.4 mm

* Setup can be adjusted to your need