A device for recording microholograms with a latent coded image for personalizing replicated photopolymer security holograms

摘要

The utility model relates to holographic systems for recording digital information and can be used to personalize security holograms in the process of their continuous replication on photopolymer materials. The technical result of improving the prototype recording device while maintaining the required image quality of the MGF CC in protective holograms is provided by: - replacing the laser radiation source in the prototype device with an LED one, - using a role mechanism for winding up the photopolymer film carrier instead of a linear movement system and a rotary mechanism for rotating the recording medium , - additional installation of a position sensor for personalized security holograms and an electronic unit for synchronizing the operation of a LED emitter operating in a pulsed mode, a position sensor for personalized security holograms and a PMS that forms a MGF for recording into security holograms. A device for recording microholograms with a latent coded image for personalizing replicated photopolymer security holograms contains a radiation source, optical elements for expanding the radiation beam, an electronic unit for computer synthesis of Fourier microholograms, a matrix spatial light modulator (PMS) for inputting Fourier microholograms synthesized in an electronic unit into an optical channel, a projection optical system with a diaphragm that provides cutoff of radiation in non-informative diffraction orders, for transferring an image from the SLM plane to the plane of a photosensitive recording medium, which is a thin-film photopolymer material, and a device for moving the recording medium. In this case, a pulsed LED emitter controlled by a sync pulse generator is used as a radiation source. The device additionally contains an optical sensor for the position of personalized security holograms on a continuously movable strip of thin-film photopolymer material as a recording medium and an electronic unit for synchronizing the operation of a pulsed LED emitter, a position sensor for personalized security holograms on a continuously movable strip of material, and a PMS that forms a MGF for recording into security holograms. As a device for continuous movement of the strip of material, a roll mechanism is used for rewinding and unwinding the material. The entire device can be installed in a single common light-shielding housing. 1 ill.