News & Events


A focused and accurate detection of flaws with EcoReflect


The innovative EcoReflect light tunnel offers the best visual and ergonomic conditions for checking the quality of painted surfaces.

Innovative light tunnel for checking the quality of painted surfaces

Bietigheim-Bissingen, February 16, 2017 – EcoReflect from Dürr is an innovative light tunnel for checking surface quality. With an innovative light concept and a perfectly ergonomic environment design, it delivers precise and highly focused vision. This permits continuous detection of irregularities in paint with maximum accuracy.

Before car bodies leave the paint shop and go into final assembly, the paint structure is checked for the smallest flaws like inclusions of dust or small hairs. The EcoReflect light tunnel provides the best visual and ergonomic conditions for this difficult quality inspection task.

Detecting deviations calls for a reflected image with high, but not too stimulating, contrasts. With EcoReflect, the number of contrast lines in the field of vision is also based on a suitable stimulus frequency.  Since it generates vertical contrast lines, the operators can follow the progression of the car bodies when checking them. In contrast to conventional systems with horizontal lines, with this system the operators do not have to keep looking up and down, which is much more ergonomic and less physically strenuous. 

Glare-free vision is another important prerequisite for detecting surface flaws and at the same time minimizing fatigue symptoms for operators. With EcoReflect, appropriate prisms at the lamps ensure that as much light as possible is shone onto the car bodies, and that the operators are not subjected to glare. The radiation principle of asymmetric lighting helps here.

Dürr has also enhanced the luminaire concept with the use of LED modules. The result is both high contrasts in the reflected image and areas with homogeneous illumination. The LED technology used requires just the half of the energy of conventional fluorescent tubes. EcoReflect is also more economical than standard LED designs because the arched shape of the light tunnel casts a particularly large amount of light onto the car body.

EcoReflect can be constructed as an individual station or as a line. The system can also be extended and customized in terms of light colors and materials for complex flaw types.

The Dürr Group is one of the world's leading mechanical and plant engineering firms with outstanding automation expertise. Products, systems and services offered by the Group enable highly efficient manufacturing processes in different industries. Dürr supplies not only the automotive industry but also other sectors such as the mechanical engineering, chemical and pharmaceutical industries, and – since the takeover of HOMAG Group AG in October 2014 – the woodworking industry. Dürr has 92 business locations in 28 countries. With just under 15,000 employees, the Group generated sales revenues of € 3.77 billion in 2015. The Group operates in the market via five divisions:

  • Paint and Final Assembly Systems: paint shops and final assembly systems for the automotive industry
  • Application Technology: robot technologies for the automated application of paint, sealants and adhesives
  • Measuring and Process Systems: balancing and cleaning equipment as well as assembly, testing and filling technology
  • Clean Technology Systems: exhaust-air purification systems and energy efficiency technology
  • Woodworking Machinery and Systems: machinery and equipment for the woodworking industry


Dürr Systems AG
Günter Buzer
Marketing Paint and Final Assembly Systems
Tel.: +49 7142 78-2614
E-mail: guenter.buzer(at)

Dürr News