Optical Precision
A specialized optical lens designed to eliminate perspective error and magnification changes when the object distance varies ensures high-accuracy imaging in machine vision. Utilizing a telecentric lens allows inspection systems to measure the dimensions of carton blanks and printed patterns with extreme precision. This optical component is essential for detecting registration errors on fast-moving webs.
Imaging Geometry
By keeping the chief rays parallel to the optical axis, the lens prevents the size of the image from changing when the board flutters or vibrates. This constant magnification across the entire depth of focus is what distinguishes this lens from standard industrial lenses. Placing this optical assembly in print-monitoring systems eliminates false measurements caused by normal web movement.
Measurement Accuracy
Packaging converters rely on precise dimensional data to ensure that die-cut blanks fold into perfectly square cartons on automated filling lines. Employing a telecentric lens prevents the distortion that typically occurs at the edges of the camera’s field of view, providing a flat and uniform image across the entire scanned area. This distortion-free imaging enables the analysis software to detect errors in slit width, crease spacing, and window placement.
Implementing this high-quality optical setup ensures that every produced carton meets the tight tolerances required by high-speed assembly machinery.
