{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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  "description": "The present invention relates to a light wave rangefinder for measuring a distance to an object of measurement by means of light reflected from the object of measurement without using a prism, and particularly to provision of a light wave rangefinder that sends pointer light for visually…",
  "path": "/patents/1112842",
  "publishedAt": "2001-05-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C3/08",
    "TOPCON CORP [JP]"
  ],
  "textContent": "The present invention relates to a light wave rangefinder for measuring a distance to an object of measurement by means of light reflected from the object of measurement without using a prism, and particularly to provision of a light wave rangefinder that sends pointer light for visually recognizing a measuring area and position. A light wave rangefinder according to the present invention comprises a measuring light emitting device which emits measuring light rays; a light transmitting optical system which directs the measuring light rays at an object of measurement; a light receiving optical system which receives the measuring light rays reflected from the object of measurement; a light receiving device which receives the reflected measuring light rays and forms a light receiving signal; a control arithmetic unit which calculates a distance to the object of measurement on the basis of the light receiving signal; and a pointer light emitting device which introduces visible light into the light transmitting optical system.",
  "title": "Optical rangefinder"
}