Laser Corrects Vignetting of Lenses

Simple laser systems in combination with a cylindrical lens provide a lot of light in the center of the projected line. With the high-quality laser systems, maybe even with a "Powell-lens” projecting a uniform line, it cannot be the case – can it?

(PresseBox) (Wessling, ) The reason for this phenomenon is the vignetting of the image observing lens and in the projection of the laser itself. By using a large opening angle of the laser optic or the camera lens the described phenomenon is caused. The new COS4-corrected lasers for image pro-cessing by Laser 2000 are able to prevent this. The special optics compensates and controls the transition in the center, which could with a 90° laser be down to 40 % and leads to a performance visibility of only 25 % at the line ends. Using the new COS4-optics enables a very uniform illumination on the sensor chip with an homogenous distribution of the laser line.

Lines with high homogeneity and projections with the greatest possible to generate uniformi-ty in the intensity was the goal of development. By means of compensation of the COS4 effect the new lasers from Laser 2000 are able to meet this demand.

Laser 2000 GmbH

http://otrs.huberlan.de/...

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