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:
May. 26, 2009
Filed:
Dec. 28, 2005
Applicants:
Naoko Hikichi, Tokyo, JP;
Kenichi Nakama, Tokyo, JP;
Yasunori Arima, Tokyo, JP;
Inventors:
Assignee:
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical module can achieve an optical system using a transmission-type diffraction grating for bending the optical path of incident light with a specific wavelength by about 90°. A substrate of the transmission-type diffraction grating is mounted at an angle in a range of ±5° with respect to the design incident angle α of the incident light. The optical system can be applied to a light multiplexing/demultiplexing module.
Hikichi, Naoko. (2009). Optical path changing module (U.S. Patent No. 7538945). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7538945
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