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:
Sep. 30, 2003
Filed:
Mar. 12, 2001
Applicant:
Inventor:
Masahiro Toida, Kaisei-machi, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa-Ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 9/02 ; G02B 6/02 ;
U.S. Cl.
CPC ...
G01B 9/02 ; G02B 6/02 ;
Abstract
Amplified spontaneous emission light, which is low coherence light radiated out from an optical fiber doped with a light emitting material when excitation energy is applied to the optical fiber, is divided into signal light and reference light. A frequency of the reference light is shifted to a frequency slightly different from the frequency of the signal light. A tomographic image of a measuring site is acquired from an intensity of interference light formed by the signal light reflected from the measuring site and the reference light.