The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2019
Filed:
Jan. 06, 2016
Ntt Advanced Technology Corporation, Kanagawa, JP;
Shogo Yagi, Naka, JP;
Fumio Saito, Tochigi, JP;
Kazunori Naganuma, Kokubunji, JP;
Eiichi Sugai, Ebina, JP;
Tohru Kodaira, Tokyo, JP;
Akira Sawaguchi, Tokyo, JP;
Hideki Hagino, Inba-gun, JP;
Takeshi Watanabe, Koshigaya, JP;
Noriyuki Ishidu, Noda, JP;
Hiizu Takemura, Kyotanabe, JP;
NTT ADVANCED TECHNOLOGY CORPORATION, Kanagawa, JP;
Abstract
Provided is a position locating instrument for a position locating method in which position locating instruments that transmit and receive light beams are arranged in series connection. The position locating instruments reduce error factors and improve measurement accuracy by providing all or some of necessary position and attitude parameters. The position locating instrument has at least one light emission port through which light from a wavelength-changeable light source is emitted; and at least one light receiving port that receives light emitted or reflected by an adjacent position locating instrument. The light emitted from the light emission port has a fanlike pattern and has an emission angle varying, as a monotonic function of a wavelength of the light, in a direction perpendicular to a direction in which the light spreads in the fanlike pattern.