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:
Nov. 09, 1993
Filed:
Apr. 29, 1992
Toshikazu Nakamura, Saitama, JP;
Sadachika Tsuzuki, Saitama, JP;
Kazunori Noda, Saitama, JP;
Kenji Kamimura, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a system for detecting a relative position of an observation spot and reference points fixed around the observation spot, a central axis of mirror rotation is precessed to draw a substantially conical locus so that a light beam is vertically vibrated, the azimuth of the rotative scanning direction and the precessional angle are stored when the light beam reflected by a light reflector at the reference point is detected, then the projection direction of the light beam is fixed at the detected rotative scanning and precession angles, the distance between the observation spot and the light reflector is measured on the basis of the detected signals, and the positions of the light reflectors with respect to the observation spot are calculated on the basis of the measured distances and azimuths.