{
  "$type": "site.standard.document",
  "description": "A head-up display apparatus includes: a projection optical system that projects a virtual image; an environment monitor portion as an object detection part that detects an object present in a detection region and detects a distance from the projection optical system to the object as a target…",
  "path": "/patents/1255053",
  "publishedAt": "2020-02-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K35/00",
    "KONICA MINOLTA, INC."
  ],
  "textContent": "A head-up display apparatus includes: a projection optical system that projects a virtual image; an environment monitor portion as an object detection part that detects an object present in a detection region and detects a distance from the projection optical system to the object as a target distance; an arrangement change apparatus as a projection distance change part that periodically changes a projection distance of a virtual image from the projection optical system ; and a main control apparatus and a display control portion as an image addition part that adds a related-information image as a virtual image by the projection optical system to the detected object at timing when the target distance substantially matches the projection distance.",
  "title": "Head-Up Display Apparatus"
}