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公开(公告)号:US11520015B2
公开(公告)日:2022-12-06
申请号:US16106309
申请日:2018-08-21
Applicant: TOPCON CORPORATION
Inventor: Yasushi Tanaka , Takaaki Saito , Ken'ichiro Yoshino , Mitsuru Kanokogi
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.
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公开(公告)号:US11733357B2
公开(公告)日:2023-08-22
申请号:US18050962
申请日:2022-10-28
Applicant: TOPCON CORPORATION
Inventor: Yasushi Tanaka , Takaaki Saito , Ken'ichiro Yoshino , Mitsuru Kanokogi
CPC classification number: G01S7/4817 , G01J3/108 , G01S7/497 , G01S17/10 , G01S17/42 , G01S17/89 , G01N2201/0697 , G01S7/4813
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.
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