{
  "$type": "site.standard.document",
  "description": "Provided is an image display device that attains see-through characteristics and visual perceptibility with a simple structure. An image display device includes a frame, a signal generation unit (light source unit) that generates signal light L1 that is a TE wave, a scan light emission unit that is…",
  "path": "/patents/927130",
  "publishedAt": "2017-05-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K35/22",
    "SEIKO EPSON CORP [JP]"
  ],
  "textContent": "Provided is an image display device that attains see-through characteristics and visual perceptibility with a simple structure. An image display device includes a frame, a signal generation unit (light source unit) that generates signal light L1 that is a TE wave, a scan light emission unit that is provided with a light scan unit 42 (light scanner) that scans the signal light L1, a reflection unit 6 (reflecting optical unit) that reflects the signal light L1 scanned by the light scan unit 42; a diffracting optical unit 9 that includes a pair of diffraction gratings whose grating patterns are equivalent to each other and diffracts the signal light L1 reflected at the reflection unit 6; and a polarizing plate 8 (polarization selection unit) that is located at an opposite side in relation to the diffracting optical unit 9 with respect to the reflection unit 6 and allows outside-world light L2 that is a TM wave to pass toward the reflection unit 6, wherein the diffracting optical unit 9 diffracts the signal light L1 and does not diffract the outside-world light L2. The signal light L1 is split into plural beams at the diffracting optical unit 9 to enter the eye EY of a user.",
  "title": "IMAGE DISPLAY DEVICE"
}