LOW-REFRACTIVE-INDEX LAYER, LAMINATED FILM, METHOD FOR PRODUCING LOW-REFRACTIVE-INDEX LAYER, METHOD FOR PRODUCING LAMINATED FILM, OPTICAL MEMBER, AND IMAGE DISPLAY DEVICE

摘要

The purpose of the present invention is to provide a low-refractive-index layer with which it is possible to attain both a low refractive index and a high mechanical strength even when the layer has a large thickness. This low-refractive-index layer, which is formed from a gap layer, is characterized in that the gap layer contains hollow particles, which are internally hollow, and the refractive index of the low-refractive-index layer does not exceed 1.25.