{
  "$type": "site.standard.document",
  "description": "The present invention provides a head-up display apparatus capable of both long-distance display and short-distance display. A functional film is mounted on a glare trap part of a head-up display apparatus . In order to display a first virtual image , a first image display device projects a first…",
  "path": "/patents/1240314",
  "publishedAt": "2019-08-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G02B27/0101",
    "Maxell, Ltd."
  ],
  "textContent": "The present invention provides a head-up display apparatus capable of both long-distance display and short-distance display. A functional film is mounted on a glare trap part of a head-up display apparatus . In order to display a first virtual image , a first image display device projects a first image onto a windshield via the glare trap part. In order to display a second virtual image having a different display distance, a second image display device generates a second image on the functional film and projects the second image onto the windshield. For the functional film , a variable transmittance film having a light transmittance that varies according to the applied voltage or a transparent self-luminous film in which an irradiated portion emits light when irradiated with a laser beam of a specific wavelength is used.",
  "title": "HEAD-UP DISPLAY APPARATUS"
}