VOLUME HOLOGRAM, LIGHT SOURCE DEVICE, ILLUMINATION DEVICE, MONITOR AND IMAGE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light source device or the like capable of reducing speckle noise in constitutions where an external resonator is used. SOLUTION: A volume hologram allows the coherent light having a plurality of wavelengths to be diffracted and a plurality of interference fringes 14a, 14b, 14c having streaks each having different angle between the streaks and the incidence surface 2a are recorded. COPYRIGHT: (C)2008,JPO&INPIT