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:
Feb. 02, 1999
Filed:
Oct. 03, 1997
Valentin M Gelikonov, Nizhny Novgorod, RU;
Grigory V Gelikonov, Nizhny Novgorod, RU;
Natalia D Gladkova, Nizhny Novgorod, RU;
Vladimir I Leonov, Nizhny Novgorod, RU;
Felix I Feldchtein, Nizhny Novgorod, RU;
Alexander M Sergeev, Nizhny Novgorod, RU;
Yakov I Khanin, Nizhny Novgorod, RU;
Optical Coherence Technologies, Inc., Cleveland, OH (US);
Abstract
The invention is related to technical physics, in particular to devices for investigating the internal structure of objects and can be used in medicine for diagnostics of human organs and systems, in particular for optical coherence tomography and in technical diagnostics, for example technological process control. The invention relates to the creation of an optical-fiber interferometer, which, being used in a device for optical coherence tomography, allows one to investigate media with short time of changing of optical characteristics or its position relative to the optical probe, for example biotissues in vivo. The invention also relates to the creation of a piezoelectric modulator, suitable for use in the interferometer and for providing the necessary scanning depth in the mentioned media. In the described optical fiber interferometer the piezoelectric modulator, constructed as a fiber optic piezoelectric controllable delay line, performs a function of the fiber part of the interferometer arm which allows one to change practically inertialess the optical path in the interferometer arm and consequently an optical path difference at least to several tens of the working wavelenghts.