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:
Sep. 26, 2017
Filed:
Nov. 05, 2013
Citizen Watch Co., Ltd., Tokyo, JP;
Kenji Matsumoto, Tokyo, JP;
Nobuyuki Hashimoto, Saitama, JP;
Makoto Kurihara, Saitama, JP;
Masafumi Yokoyama, Tokyo, JP;
Ayano Tanabe, Tokyo, JP;
CITIZEN WATCH CO., LTD., Tokyo, JP;
Abstract
A light modulating deviceincludes: a selective diffraction device (') which generates diffracted light beams of a plurality of orders by diffracting illumination light into one of a plurality of directions, the illumination light being linearly polarized light having a polarization plane oriented in a first polarization direction, and which causes a phase difference between the diffracted light beams of the plurality of orders; and a polarization plane rotating devicewhich rotates the polarization plane of the diffracted light beam of each order so as to be oriented in a direction perpendicular to a direction radiating from an optical axis.