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:
Oct. 21, 2008
Filed:
Jan. 19, 2005
Atsushi Maki, Hachioji, JP;
Hideaki Koizumi, Tokyo, JP;
Fumio Kawaguchi, Tokyo, JP;
Yuichi Yamashita, Kawagoe, JP;
Yoshitoshi Ito, Ome, JP;
Atsushi Maki, Hachioji, JP;
Hideaki Koizumi, Tokyo, JP;
Fumio Kawaguchi, Tokyo, JP;
Yuichi Yamashita, Kawagoe, JP;
Yoshitoshi Ito, Ome, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.