Patent ID: 6339660
Filing Date: 2002-01-15
Classification: G02F

Abstract:
Device for writing on an imaging material, which comprisesa radiation source for generating electromagnetic radiation of such a wavelength that image information is written onto the imaging material using said wavelength; a waveguide integrated with a substrate material, the waveguide being adapted as a modulator for modulating the radiation produced by the radiation source; the modulator including an input for receiving a modulation signal with the image information; a compensator for compensating a modulation error which occurs when the radiation is modulated; a first capture means for capturing an image of modulated radiation emitted by the modulator; a generator receiving the captured image of the modulated radiation; the generator is designed such that the supplied image for establishing the modulation error is compared with a set-point information and subsequently a modulation error signal is generated that depends on the established modulation error; wherein the compensator compensates the modulation error with the supplied modulation error signal; and wherein the compensator includes an arrangement for receiving an image signal which contains the image information to be written on the imaging material; and the modulation signal for modulating the radiation is generated depending on the image signal and the modulation error signal.