APPLICATION OF A MICROMIRROR LIGHT MODULATOR FOR OPTICAL ENCODING WITH TIME INTEGRATION
N. N. Evtikhiev, V. V. Krasnov, D. Yu. Molodtsov, V. G. Rodin, R. S. Starikov, P. A. Cheremkhin
National Research Nuclear University "MEPhI", Moscow, Russia
Keywords: микрозеркальный модулятор, оптическое кодирование, некогерентное излучение, временное интегрирование, micromirror modulator, optical encoding, incoherent radiation, time integration
Abstract
A possibility of using a micromirror modulator for optical encoding with time integration in quasi-monochromatic spatially incoherent light is considered. An experimental setup for optical recording of encoded optical images by a digital camera is presented. Images containing text and graphical information are encoded; these images are successfully decoded by the method of inverse filtration. The use of time integration of optically encoded images allows reduction of noise induced by binarization of holograms containing encoding keys subjected to modulation and enhancement of the diffraction efficiency of the encoding process.
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