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Choosing an Optical Measurement Sensor for Non-contact Displacement, Dimension and Thickness Measurement

The demand for precise optical measurement sensors is rapidly increasing due to the need to measure displacement, thickness and dimensions with micrometer precision. But which sensor is best suited to which application? This webinar explains technologies, differences and application examples for optical measurement sensors: confocal, laser triangulation and 2D/3D profile sensors.

Originally presented: October 11, 2019
Duration: 1 hour
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Optical sensors are increasingly used for precision measurement due to many factors. On one hand, displacement, thickness and dimensions must be measured much more accurately with micrometer resolution, and on the other hand sensors must measure against fragile surfaces that cannot be touched.

Their rapid growth in the sensor market has pushed the development of new technologies to meet demanding requirements and to improve measurement accuracy. It is therefore more important than ever to have a greater level of understanding of the strengths and limitations of each optical measurement principle when selecting the correct sensor technology for your specific measurement task. The key is selecting the most appropriate sensing technology for your measurement task.

This webinar explains different technologies, restrictions and differences of the following technologies: confocal chromatic sensors, laser triangulation sensors (and time-of-flight sensors) and laser profile sensors, including the innovative blue laser technology. All these sensors are used for measurements with high precision, stability and high measuring rates.

Attendees will learn the operating principles of optical measuring sensors for displacement, position, thickness, gap, profile and 2D/3D dimension with just one sensor. Various animations and graphics show detailed application examples and give important tips for choosing the right technology. Additional resources for further details are provided by Micro-Epsilon.

Key Takeaways

  • Learn the metrology fundamentals and basics of optical measurement
  • Understand the measurement principles, advantages and even restrictions of confocal chromatic, laser triangulation and 2D/3D laser profile scanners
  • Find out the differences between the sensor technologies
  • Learn which innovative technologies - such as blue laser sensors - can be used for displacement, profile, 2D/3D dimension or thickness measurement


Martin Dumberger, Managing Director Micro-Epsilon America, Micro-Epsilon America

Martin Dumberger has more than 25 years of experience in high precision measurement and sensors.

His focus has been on non-contact measuring technologies such as eddy current, capacitive and optical sensors.

With a background in engineering and 10 years of R&D exposure in this field, Martin has been educating and supporting customers in all industries to solve challenging measurement applications.

Martin Dumberger is co-founder of Micro-Epsilon America and Managing Director of Micro-Epsilon America.