FULL COLOR HOLOGRAPHIC OPTICAL ELEMENT AND METHOD FOR FABRICATING THE SAME USING PHOTOPOLYMER, WAVEGUIDE-TYPE HEAD MOUNTED DISPLAY

摘要

The present invention relates to a full-color holographic optical element and a manufacturing method thereof using a photopolymer, plus a display device. A reference beam is inserted into a first photopolymer, an object beam of red laser is inserted into the reference beam of the first photopolymer at determined angle, and a photopolymer for red light is formed; a reference beam is inserted into a second photopolymer, and an object beam in which green laser and blue laser are united is inserted into the reference beam of the second photopolymer at determined angle, and a photopolymer for green and blue light is formed. By arranging the photopolymer for red light and the photopolymer for green and blue lights, diffraction efficiency and color uniformity can be improved and the size can be reduced. Accordingly, the present invention can be applied to HMD easily.