Reliable camera system for precise assembly of LED matrix headlights

The core components of modern LED matrix headlights must be precisely assembled. Vision & Control supplies the image processing systems to support fully automatic adjustment in series production.

Headlight adjustment

The lighting and electronics specialist HELLA has developed a new LED matrix headlight that adapts its light distribution to traffic, weather and road conditions. The heart of this headlight consists of a light source module with a three-line matrix of 84 separately controllable LEDs and a special primary optic with 90 silicone light guides. A decisive factor for the efficiency of the headlight is the exact joining of both components, which must fit together with an accuracy of ± 0.1 millimeters.

The Ilmenau-based company MRB Automation GmbH uses image processing systems from Vision & Control in Suhl for this process in its automatic adjustment machines. The image processing system vicosys (with two cameras) determines the positions of the LEDs and the light guide with an accuracy of more than 10 micrometers before the joining step. After the marriage of both components, the Pictor compact camera measures the distance between the LED and the light guide at three defined positions. In addition to alignment, the correct distance is crucial for the proper functioning of the headlight.

The high-resolution telecentric lens ensures distortion-free imaging, high-intensity LED ring lighting and area lighting for optimum illumination. Since 2015, the first three adjustment systems at HELLA have been working process-reliably in mass production, and five additional stations were added in 2017. A second German headlight manufacturer has now also purchased two of these production facilities. In addition, two suppliers of LED circuit boards and primary optics also use this measurement technology for quality control.

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Mr Paul-Thomas Hinkel

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Company contact

 

 

Vision & Control GmbH

Mittelbergstr. 16

D-98527 Suhl / Germany

 

Contact Person

Ms  Beate Koch

Phone: +49 36 81 / 79 74-34

E-Mail: presse@vision-control.com

Internet: www.vision-control.com