Why telecentric zoom optics are indispensable in industrial image processing
Telecentric zoom optics, whether manual or motorized, offer decisive advantages for retrofitting dressing and grinding machines. With the option of precisely displaying DXF, DWG or vectorized PDF files, they enable effortless and eye-friendly control of workpiece contours directly in the manufacturing process. But why do we use telecentric systems in these applications in particular?
The physical reasons for telecentric optics: Minimization of lens distortion
One of the biggest challenges in industrial image processing is lens distortion. This is a geometric deviation of the image information from the ideal shapes. These distortions can lead to serious measurement errors and impair the efficiency of modern manufacturing processes.
Types of lens distortion
- Radial distortions:
- Barrel distortion: typical of wide-angle lenses (focal length < 50 mm), caused by the front aperture structure. It causes straight lines to appear curved outwards.
- Pincushion distortion: common in telephoto lenses (focal length > 50 mm) due to rear aperture structures. Here, straight lines appear curved inwards.
- Whiskershaped distortion: A hybrid form that combines both effects, but occurs less frequently.
- Tangential distortion: Less common, but also problematic because it distorts the image information asymmetrically.
Telecentric systems as a solution
Telecentric optics almost completely avoid these distortions. Their special design ensures that parallel rays hit the sensor regardless of their position in the field of view. The result: distortion-free, true-to-scale images – a basic requirement for precise measurements and error-free inspection of workpieces.
Benefits for industrial production
Avoiding distortion is crucial in industrial image processing. Distorted images can:
- cause measurement and evaluation errors
- impair the accuracy of algorithms, especially in image processing
- reduce the reliability of the entire manufacturing process
Telecentric zoom optics, on the other hand, ensure consistently high image quality and enable precise control of workpieces, even in demanding applications.
Conclusion: efficiency and precision through telecentric optics
With telecentric zoom optics, you not only ensure the accuracy of your measurements, but also optimize the efficiency of your manufacturing processes. They are indispensable for applications where precision is paramount, such as in dressing and grinding machines. Choose a solution that takes quality and performance to a new level.
