{
  "$type": "site.standard.document",
  "description": "Provided is a survey system () including a rotating laser device () that horizontally emits laser light (LB) at a height (H) from a measurement reference point (RP), a surveying instrument () installed at another measurement reference point (RP), and a laser-light receiver () fixed to a front…",
  "path": "/patents/1381776",
  "publishedAt": "2026-04-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C3/20",
    "TOPCON CORPORATION"
  ],
  "textContent": "Provided is a survey system () including a rotating laser device () that horizontally emits laser light (LB) at a height (H) from a measurement reference point (RP), a surveying instrument () installed at another measurement reference point (RP), and a laser-light receiver () fixed to a front surface of the surveying instrument. The laser-light receiver includes light receiving units at both ends of a light guide, and a first and vertical light-receiving tubes (), and a horizontal light-receiving tube () provided in an H-shape, specifies a collision position () of the laser light from light reception signals of each light-receiving tube, detects a difference distance from a center position, and measures an instrument height (h) based on a height (H) of the laser light, a center separation distance (d) between a light receiver center (RC) and an instrument center (MC), and the difference distance.",
  "title": "SURVEY SYSTEM AND LASER LIGHT RECEIVER"
}