Machine Vision

 

Basler scout and pilot cameras come with extreme accuracy in mechanical design to serve even small pixels

Basler’s scout and pilot cameras have reached a new level of accuracy in designing cameras. Basler specified extremely tough variations during the development of scout and pilot. In an imaging system, precise image results highly depend on all components in use. Therefore, defined tolerances for reference planes are necessary in order to mount a camera correctly in relation to the object that is to be inspected. Stable reference planes also allow repetition and adjustment inside the imaging system. Unlike most of the competition, Basler guarantees strict tolerances for the housing and all reference planes.

The following drawings show the absolute tolerances of the housing.

In addition, Basler is highly precise in adjusting the back focal lengths towards the standard of 17.526 mm for C-Mount. Only minor variations are accepted as indicated in the drawing below, and are assured by Basler’s unique back focal calibration system.

Why is that important? Mainly because the image has do be sharp and focused at every point of the sensor. If the back focal distance is not precise, the image might not be sharp but blurred instead. The most obvious and easiest way to check the correct back focal distance is to control whether the camera is sharp in infinity.

In order to guarantee that all parts of the sensor can be focused correctly, Basler also defines the maximum sensor tilt angle. This capability means that a camera design with a sensor having small pixels also delivers sharp and accurate imaging results. If that factor is not considered carefully by the camera designer, the risk is very high that there will be blurred parts inside the image while others parts are sharp due to a tilt in the sensor positioning. Also, “cross talking” between pixels might happen due to the tilt of the sensor position.

Unlike most of Basler’s competitors, Basler specifies all these parameters inside the user manuals. This information ensures safe integration and repeatability in series production for our customers and will prevent situations where drifting camera performance might end in costly and time-consuming discussions about product features.


For more information, please contact us at +49 4102 463-500 or e-mail us at bc.sales.europe@baslerweb.com.