OPTICAL DEVICE, VIDEO DISPLAY DEVICE, AND HEAD MOUNT DISPLAY

摘要

PROBLEM TO BE SOLVED: To provide an optical device which does not degrade characteristics of a hologram, does not cause entrainment of air into the joint surface of a transparent substrate and has high adhesion strength between the transparent substrates. SOLUTION: The optical device is constituted in such a manner that the transparent substrate 22 to which the hologram 24 is attached and the transparent substrate 23 are joined so as to hold the hologram 24 therebetween and external images are observed as see-through pictures via the joint surface, wherein the interface between the hologram 24 and the transparent substrate 23 is joined with a tacky adhesive agent 26 and an adhesive 25 in this order from the hologram 24 side. COPYRIGHT: (C)2007,JPO&INPIT