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. 14, 2003
Filed:
Apr. 28, 2000
Tohru Mori, Tokyo, JP;
Takashi Iwasaki, Tokyo, JP;
Ando Electric Co., Ltd., Tokyo, JP;
Abstract
An optical spectrum analyzer and a wavelength variable light source have each a sweep synchronization start function. A correction function of the rotation speed of a motor for varying the angle of a diffraction grating in a spectroscope so that extracted wavelength and output signal light wavelength match over a setup sweep wavelength range is found from the output signal light wavelength characteristic relative to the rotation angle of a spectral element and the extracted wavelength of the spectroscope , and the rotation angle of motor for driving the spectroscope is varied for each setup wavelength in accordance with the correction function, then sweep is performed.