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Publikováno v:
Applied Optics
Applied optics
Applied optics, Optical Society of America, 2020, 59 (4), pp.910. ⟨10.1364/AO.378122⟩
Applied optics
Applied optics, Optical Society of America, 2020, 59 (4), pp.910. ⟨10.1364/AO.378122⟩
International audience; A method of optimizing and manufacturing a diffractive blazed grating array (DBA) is proposed to create a visual security feature when illuminated by a divergent Light emitting diode (LED) source. A pure phase grating array se