{
  "$type": "site.standard.document",
  "description": "There is provided a head-up display system comprising an eye-box having a first dimension and a second dimension. The head-up display further comprises an image projector comprising a picture generating unit and an optical system. The picture generating unit comprises a spatial light modulator…",
  "path": "/patents/1392392",
  "publishedAt": "2026-04-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K35/231",
    "ENVISICS LTD [GB]"
  ],
  "textContent": "There is provided a head-up display system comprising an eye-box having a first dimension and a second dimension. The head-up display further comprises an image projector comprising a picture generating unit and an optical system. The picture generating unit comprises a spatial light modulator arranged to display a hologram such that light incident on the spatial light modulator is spatially modulated in accordance with the hologram. The optical system is arranged to relay spatially modulated light from the picture generating unit to an optical combiner. The head-up display system further comprises a movement assembly arranged to move at least a portion of the image projector rectilinearly between a plurality of positions such that at least one component of the picture generating unit is moved together with the optical system when the at least portion of the image projector is moved between the plurality of positions. The head-up display is arranged such that the spatially modulated light relayed to the optical combiner forms a virtual image viewable from a sub-eye-box having a position in the first dimension that is dependent on the position of the at least portion a of the image projector. The eye-box is the sum of the sub-eye-boxes associated with each of the plurality of positions of the at least a portion of the image projector.",
  "title": "EXTENDED EYE-BOX"
}