OPTICAL LAYERED COMPOSITE HAVING A REDUCED CONTENT OF HIGHLY REFRACTIVE LAYERS AND ITS APPLICATION IN AUGMENTED REALITY

摘要

An optical layered composite includes: a substrate having a front face, a back face, a thickness ds between the front face and the back face and a refractive index n_s; and a coating applied to the front face. The coating comprises a group A of coating layers having a refractive index of 1.7 or more and a group B of coating layers having a refractive index of less than 1.7. The sum of the thicknesses of the layers of the group A is at most 55% of the total thickness d_c of the coating.