{
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  "description": "The present disclosure provides a head-up display capable of displaying a virtual image along a road surface without reducing a contrast of a display device. A head-up display (100) displaying a virtual image (I) includes a display device (110) and a projection optical system (140); the projection…",
  "path": "/patents/1424148",
  "publishedAt": "2024-01-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K35/22",
    "PANASONIC IP MAN CO LTD [JP]"
  ],
  "textContent": "The present disclosure provides a head-up display capable of displaying a virtual image along a road surface without reducing a contrast of a display device. A head-up display (100) displaying a virtual image (I) includes a display device (110) and a projection optical system (140); the projection optical system (140) includes a first optical element (123) and a second optical element (125) arranged in order of an optical path from the image; and when optical paths corresponding to an upper end and a lower end of the virtual image are defined as an upper ray (Lu) and a lower ray (Ll), respectively, and a diverging effect and a converging effect are defined as being negative and positive, respectively, the first optical element and the second optical element satisfy conditional expressions P_u1-P_l10 (where P_u1 denotes a local power of the first optical element acting on the upper ray, P_l1 denotes a local power of the first optical element acting on the lower ray, P_u2 denotes a local power of the second optical element acting on the upper ray, and P_l2 denotes a local power of the second optical element acting on the lower ray).",
  "title": "HEAD-UP DISPLAY AND MOBILE BODY EQUIPPED WITH HEAD-UP DISPLAY"
}