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:
Mar. 03, 2015
Filed:
Nov. 16, 2010
Atsushi Kubota, Tokyo, JP;
Tomoyoshi Abe, Tokyo, JP;
Atsushi Kubota, Tokyo, JP;
Tomoyoshi Abe, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
A main controllercontrols a fiber-end drive mechanismand an attenuatorwith reference to the received-light amount of interference light LC to cause the following operations (1) and (2) to be executed alternately: (1) moving an emission endto increase the received-light amount to at least an upper limit; and (2) changing the light amount of reference light LR to decrease the received-light amount to at least a lower limit. When the received-light amount specified by an received-light-amount specifying partdecreases in response to the movement of the emission endin (1), the main controllercontrols the fiber-end drive mechanismto return the relative position to the immediately preceding status of this change. The main controllerleads the received-light amount of interference light LC by a CCD image sensorto a target value by controlling the attenuatorto change the light amount of interference light LC.