Distortion-free Optics for Line Scan Applications

Moritex Corporation has developed a new lens for high definition line scan cameras: the ML-L00502. It offers an exact, high-contrast picture display at a screen diagonal of up to 62 mm, today's maximum applicable CCD sensor length. The illumination drop between the center and the periphery of the field of view is less than 20 %. The distortion of the optic is less than 0.1%.

Machine vision systems that are based on line scan cameras are increasingly being used for quality inspection as well as sorting procedures. Their main area of application is in semiconductor manufacturing, for quality assurance during the production of solar modules and Liquid Crystal Displays (LCD) as well as printed circuit boards for computers, for instance.

The latest generation of CCD sensors in line scan cameras reaches a resolution of 12,000 pixels 5 μm in size. In order to capitalize on this, lenses like the ML-L00502 by Moritex offers an extremely low distortion. This also makes them attractive for high-resolution Matrix sensors.

The ML-L00502 allows for a very compact design of the machine vision system. To achieve homogenous illumination of the objects to be inspected, Moritex and Schott also offer high-performance LED and halogen light sources, including fiber optic light guides upon request.