公开(公告)号：US20230077077A1

公开(公告)日：2023-03-09

申请号：US18050962

申请日：2022-10-28

Applicant: TOPCON CORPORATION

Inventor： Yasushi TANAKA ,  Takaaki SAITO ,  Ken'ichiro YOSHINO ,  Mitsuru KANOKOGI

IPC: G01S7/481 ,  G01S7/497 ,  G01J3/10 ,  G01S17/89 ,  G01S17/10 ,  G01S17/42

Abstract: A 3-dimensional measuring device includes: a light source unit; a projection optical system; a scanning mirror that is provided to be rotatable about a rotating shaft in a state of being inclined with respect to a shaft center of the rotating shaft to radiate a range-finding light within a plane crossing the rotating shaft in a rotary manner; a light-receiving optical system that receives a reflection range-finding light; a reference light optical system that is provided in a range outside a measuring range within a radiation range to receive and reflect the range-finding light as an internal reference light, the reference light optical system being capable of changing a light quantity of the internal reference light; and a light receiving element that receives the reflection range-finding light and the internal reference light.

公开(公告)号：US20190064326A1

公开(公告)日：2019-02-28

申请号：US16106309

申请日：2018-08-21

Applicant: TOPCON CORPORATION

Inventor： Yasushi TANAKA ,  Takaaki SAITO ,  Ken'ichiro YOSHINO ,  Mitsuru KANOKOGI

IPC: G01S7/481 ,  G01S7/497 ,  G01J3/10

Abstract: A 3-dimensional measuring device includes: a light source unit; a projection optical system; a scanning mirror that is provided to be rotatable about a rotating shaft in a state of being inclined with respect to a shaft center of the rotating shaft to radiate a range-finding light within a plane crossing the rotating shaft in a rotary manner; a light-receiving optical system that receives a reflection range-finding light; a reference light optical system that is provided in a range outside a measuring range within a radiation range to receive and reflect the range-finding light as an internal reference light, the reference light optical system being capable of changing a light quantity of the internal reference light; and a light receiving element that receives the reflection range-finding light and the internal reference light.