METHOD AND DEVICE FOR PRODUCING A VOLUME HOLOGRAM IN A PHOTOPOLYMER MATERIAL AND METHOD FOR PRODUCING A VALUABLE OR SECURITY DOCUMENT

摘要

A method and a device are provided in order to speed up the production and to improve the quality of volume holograms (200) in a photopolymer material (310). The claimed method comprises exposing the photopolymer material (310) with an exposure pattern that forms the volume hologram (200) and fixing the volume hologram (200) by means of introducing thermal energy into the exposed photopolymer material (310). The thermal energy is introduced by means of irradiation with electromagnetic radiation in the short-wave infrared spectral region. The claimed device (1000) is designed in particular to perform the claimed method. The device (1000) has an exposure device (1300) for exposing the photopolymer material (310) with the exposure pattern and a fixing device (1500) for fixing the volume hologram (200) by means of introducing thermal energy into the exposed photopolymer material (310). The fixing device (1500) has an NIR irradiation device (1520) which emits electromagnetic radiation in the short-wave infrared spectral region.