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:
Aug. 30, 2011
Filed:
Dec. 04, 2007
Hisashi Isozaki, Tokyo, JP;
Takehiro Takase, Tokyo, JP;
Takashi Kakinuma, Tokyo, JP;
Hiroyuki Maekawa, Tokyo, JP;
Fumio Koda, Tokyo, JP;
Michihiro Yamazaki, Tokyo, JP;
Hisashi Isozaki, Tokyo, JP;
Takehiro Takase, Tokyo, JP;
Takashi Kakinuma, Tokyo, JP;
Hiroyuki Maekawa, Tokyo, JP;
Fumio Koda, Tokyo, JP;
Michihiro Yamazaki, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
A light source section outputs optical flux having two types of wavelength, which are a short wavelength and a long wavelength, while the intensity is made variable. The output from the first light intensity detecting section in irradiating the optical flux having a short wavelength is compared with the output from the first light intensity detecting section in irradiating the optical flux having a long wavelength. A disappearance level near a point where the detected signal from the internal subject disappears is calculated. The first intensity of optical flux having a long wavelength is set to level higher than the disappearance level. Based on the output from the first light intensity detecting section obtained by the optical flux having a long wavelength of the first intensity, a subject inside the body to be detected is measured.