OPTICAL LAMINATE FOR HEAD-UP DISPLAY, FUNCTIONAL GLASS, AND HEAD-UP DISPLAY SYSTEM

摘要

The present invention pertains to an optical laminate (10) for a head-up display, the optical laminate (10) comprising (A) at least one polyvinyl acetal resin layer (101) having a photoelasticity coefficient (PeA) in the range indicated by formula (1) below, and (B) at least one optically functional layer (102). The present invention also pertains to head-up display functional glass (20) comprising the optical laminate (10), and to a head-up display provided with the optical laminate (10) or the functional glass (20). (1): |PeA| ≤ 4.0×10-11 Pa-1