Industry Perspectives

Blue Laser Scanners Now Enable High Precision Profile Measurements on Shiny, Highly Polished Surfaces

01 March 2016

Sponsored Content

Designed specifically for shiny, highly polished surfaces, as well as transparent materials such as plastics, glass, optical components and film/substrates, a new range of 2D/3D blue laser profile sensors (laser line scanners) is now available from precision sensor manufacturer Micro-Epsilon. The scanners are designed for high precision profile and dimensional measurements on a variety of materials where conventional red laser diode sensors perform at their limits.

Advantages of innovative blue laser line

The scanCONTROL BL series of blue laser profile sensors operate using blue (violet) laser technology rather than red. The special characteristics of the blue wavelength laser light make the scanners suitable for measuring against shiny, highly polished metals, as well as red-hot glowing metals and silicon-based materials.

Unlike a red laser, the blue laser operates at a shorter wavelength of 405nm, which is far from the red part of the visible spectrum. This means it is unaffected by the emitted infrared radiation from hot or glowing targets, due to implementing a simple optical filter, which ensures very stable signals. Additionally, when measuring on shiny surfaces or highly polished metals, where red lasers tend to suffer from higher noise, the high precision optical system and shorter wavelength of the scanCONTROL blue laser profile sensor performs extremely well, providing much lower noise levels, typically by a factor of two or more compared to red laser sensors.

Easy integration & connection to PLCs

Unlike common scanners, the controller is integrated into a compact sensor housing, enabling the scanners to be installed in locations where little space is available for mounting.

A major advantage for the scanCONTROL series is how easy the sensors are to set up and configure for applications. The software supplied as standard with the scanner enables the user to configure the device to a unique IP address. A Modbus protocol, which is supported via Ethernet and the RS422 interface, also enables direct connection between the sensor and a PLC and other control systems. Output of measurement data is via Ethernet (UDP, Modbus) or serial interface (RS422, Modbus). In addition, analog signals or digital switching signals can be output directly to a PLC.

There is also a software development kit, a LabVIEW driver and comprehensive command library provided as standard with the sensor. This provides the user with a communications platform that offers maximum flexibility and performance via direct integration with most common programming languages.

For fast and precise profile measurements

- Measuring ranges z-axis (distance/profile height): up to 265mm

- Measuring ranges x-axis (laser line length/profile width): up to 143.5mm

- Profile resolution: 1280 points

- Profile frequency: up to 2,000Hz

- Measuring rate: up to 2,560,000 points/sec

- NEW: high precision scanner with only 10mm laser line

Which scanner for which application?

The new web-based ‘Application Finder’ allows users to search conveniently for the appropriate laser profile sensor from Micro-Epsilon’s comprehensive scanCONTROL series by considering a number of application-related search criteria. On accessing the Application Finder users are presented with three main search criteria: by material, by measurement or by industry. Within each of these sections, users can quickly refine their searches by clicking on a variety of filters.

About Micro-Epsilon

Micro-Epsilon is a major global manufacturer of sensors, headquartered in Germany. The company is renowned for its expertise in consulting, development and application of industrial sensors to complex, customer-specific solutions for measurement, inspection and automation. The company’s range of displacement sensors measure everything from distance, position, vibration, dimensions and thickness, using both contact and non-contact measurement techniques. In addition, Micro-Epsilon has developed its own range of non-contact infrared temperature sensors and a comprehensive range of color recognition sensors.



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