Chromatic Aberration Compensation of a Lens for Use in Any CCD Camera
摘要
In optical metrology systems, such as fringe projection profilometry, cameras with lens systems are used to obtain images that allow calculations of three-dimensional shapes of objects with high precision and quality, so it is necessary to minimize all sources of error that may affect measurements.
ObjectiveWe propose an experimental method that enables the portability of chromatic aberration calibration when a lens is interchanged between cameras in optical setups.
MethodsThe method consists of compensating for errors through a chromatic aberration calibration process in two different cameras (monochromatic and color cameras) and comparing both calibrations, verifying that they are similar.
ResultsThe results demonstrate that it is possible to generate a chromatic aberration compensation matrix and apply it to any system that uses the same lens. Comparing the results obtained by the cameras shows that the slope variation of the chromatic aberration phase-difference planes lies between 0.0001 and 0.0003 degrees.
ConclusionsThe proposed method ensures that chromatic aberration calibration is not limited to a single camera, but can be applied to any system with the same lens, improving measurement accuracy and enabling portability in optical metrology setups.