{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "The present invention relates to an optical laminate for a head-up display (10), including: (A) at least one polyvinyl acetal resin layer (101) having a photoelastic coefficient (PeA) in the range of the following Expression (1) and (B) at least one optical functional layer (102). Further, the…",
  "path": "/patents/1400548",
  "publishedAt": "2026-01-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B32B17/10036",
    "NIPPON KAYAKU KK [JP]"
  ],
  "textContent": "The present invention relates to an optical laminate for a head-up display (10), including: (A) at least one polyvinyl acetal resin layer (101) having a photoelastic coefficient (PeA) in the range of the following Expression (1) and (B) at least one optical functional layer (102). Further, the present invention relates to functional glass for a head-up display (20) including: the optical laminate (10) and a head-up display including: the optical laminate (10) or the functional glass (20).[Expression 1] PeA≤4.0×10−11Pa−1",
  "title": "OPTICAL LAMINATE FOR HEAD-UP DISPLAY, FUNCTIONAL GLASS, AND HEAD-UP DISPLAY SYSTEM"
}