Vorrichtung zur Dreidimensionalen Vermessung

Details

Veröffentlichungs-Nr.

EP4614110

Aktenzeichen

EP25161696

Anmeldetag

4. März 2025

Veröffentlichung

10. September 2025

Rechtsraum

EP

IPC

G01C15/00G01S7/481G01S7/497G01S17/42G01S17/89

Abstract

Provided is a three-dimensional surveying device in which ranging precision of scanning can be improved.A three-dimensional surveying device includes a light source unit that discharges a ranging light, a projected light optical unit that emits the ranging light onto a ranging optical axis, a scanning mirror that performs rotational emission of the ranging light in a plane that intersects a rotation shaft, a light-receiving optical unit that receives reflected ranging light reflected at the measurement object and guided by the scanning mirror, a reference light optical unit that receives and also reflects the ranging light reflected at the scanning mirror as the internal reference light, and that is capable of changing quantity of light of the internal reference light, and a photoreceptor that receives the reflected ranging light and the internal reference light. The reference light optical unit has a concentration-gradient-imparted filter in which optical concentration of a region through which the internal reference light is transmitted changes along a scanning line of the internal reference light, and a reflecting sheet that performs retroreflection of the internal reference light transmitted through the concentration-gradient-imparted filter.

Anmelder

Firma

TOPCON CORPORATION

Land

🇯🇵 Japan

Fachgebiete