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. 12, 2008
Filed:
Mar. 26, 2004
Kenji Matsumoto, Tokyo, JP;
Takakazu Yano, Tokyo, JP;
Tadahiro Fukuda, Tokyo, JP;
Shigeru Futakami, Tokorozawa, JP;
Kenji Matsumoto, Tokyo, JP;
Takakazu Yano, Tokyo, JP;
Tadahiro Fukuda, Tokyo, JP;
Shigeru Futakami, Tokorozawa, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
A linearly polarized light output unit () outputs a linearly polarized light. A first phase modulation unit () includes a first polarization axis and modulates a phase of the linearly polarized light. A second phase modulation unit () includes a second polarization axis orthogonal to the first polarization axis and modulates the phase of the linearly polarized light. A signal supply unit () supplies a modulation signal (vb) for modulating the phase of the linearly polarized light to one of the phase modulation units. A light intensity detection unit () detects an intensity of a light emitted from a phase modulation unit (), to which the signal is supplied, to a sample () that contains an optically active material by causing a polarization plane of the light to be rotated and the light to be transmitted by the sample (). An optical rotation angle calculation unit () calculates an optical rotation angle based on the modulation signal (Vb) and the detected light intensity.