Charge coupled device camera calibrating method, involves determining respective output signals of camera for different intensities of micro-optical element, where linearity characteristic of camera is determined from output signals

摘要

The method involves irradiating a micro-optical element (110) such as diffractive optic element (DOE) or refractive optic element (ROE), with light of two different intensities from a light source, where the light source includes wavelength less than 200 Nm. Respective output signals of a charge coupled device (CCD) camera (130) for the different intensities of the micro-optical element are determined. A linearity characteristic of the CCD camera is determined from the output signals. An independent claim is also included for an arrangement for calibrating a CCD camera.