{
  "$type": "site.standard.document",
  "description": "A virtual image display device includes: a display unit that generates an image display light; and a projection optical system that projects the image display light L toward the virtual image presentation plate. The projection optical system includes a projection mirror that projects the image…",
  "path": "/patents/1254776",
  "publishedAt": "2020-02-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G02B27/0179",
    "JVCKENWOOD Corporation"
  ],
  "textContent": "A virtual image display device includes: a display unit that generates an image display light; and a projection optical system that projects the image display light L toward the virtual image presentation plate. The projection optical system includes a projection mirror that projects the image display light toward the virtual image presentation plate and an optical device of transmission type provided such that a light axis intersects at an angle to a light path of the projection optical system. The display unit is provided at a focal point of a composite optical system within a meridional plane, the composite optical system being formed by the virtual image presentation plate and the projection optical system.",
  "title": "VIRTUAL IMAGE DISPLAY DEVICE"
}