DEVICE FOR SCANNING A FUNCTION AND METHOD OF OPERATING THE SAME

摘要

Device for tracking the image of a function including combination means for carrying at least one graphical representation of the pattern of a function; an optical image-forming system for the function including an image-viewing screen, a source of illumination, means forming a defined path of illumination between the source and the screen, means for interposing the pattern in the path between the source and the screen, a sensor for tracking the image of the pattern on the screen, means for effecting a relative movement between the image projected on the screen and the sensor according to respective variables of the function in relation to a fixed coordinate system; and method of operating the device.