Optical Sheet Inspection

Robust defect detection with distortion measurement in one package

Description

Our Optical Sheet Inspection system was designed from the ground up for sheet manufacturers. The system consists of both a “standard” defect detection and classification system as well as optical distortion measurement, all in one package using one clear user interface.

A specially designed illumination system allows detection of both dark and clear defects with unparalleled sensitivity. While dark defects are detected using standard bright field illumination, clear defect are detected using dark field illumination.

Distortion measurement

The Optical Sheet Inspection system’s distortion measurement gives an overall indication of the sheet distortion and detects distortion irregularities and the shallowest optical defects. The system is the first and only one of it’s kind to provide DIN 52305 compatible distortion measurement in an online system.

Cross saw integration

The system optimizes the cross cutting saw and automatically and efficiently removes the smallest possible disqualified sheet sections with minimum scrap, instead of disqualifying full size sheets. Integration with the stacker also allows multiple stacks with different quality levels.

User interface

A simple to operate yet sophisticated, field proven user interface answers the different needs of the line operator, line manager, quality assurance department and plant engineering. Watch the video below for more information.

Features

A few of the Optical Sheet Inspection system’s main features

Illumination system

Illumination system

Multiple illumination systems are used for enhanced defect detection: Bright field – for dark defects detection, Dark field – for clear defects and Distortion field

Line operator toolbox

Line operator toolbox

A dedicated, simple line operator display showing the line, manufactured sheets status and indicators of the production quality with alarms, drill down tools and rolling maps of defects and distortion

Sub-sheets

Sub-sheets

The system virtually dividessheets in to sub-sheets, calculating total quality level based on the quality level of each sub-sheet and controlling the stacker accordingly.

Quality documentation

Quality documentation

The entire run history is stored including all information that was available during the run: Defect/distortion maps, defect pictures, quality tests, trends etc.
Reports can be generated for each one of the qualified/scrappedsheets

Advantages

1

Designed for sheet manufacturers

The Optical Sheet Inspection system was completely designed from the ground up for sheet manufacturers and has undergone numerous customer-led improvements.

2

Built-in distortion measurement

The distortion measurement gives an easy to understand indication of the sheet distortion and detects distortion irregularities and the shallowest optical defects.

 

3

Advanced illumination system

The system utilizes a specially designed illumination system that allows detection of both dark and clear defects with unparalleled sensitivity.

4

Proven design and performance

The Optical Sheet Inspection system has logged thousands of hours of optical grade sheet production and has been proven to improve quality, yield and customer acceptability.

Watch the Video

Watch the Optical Sheet Inspection system at work on a solid PMMA line

NEW! Watch this video on 土豆 (Tudou)