Invention Grant
- Patent Title: Light modulating device
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Application No.: US14647403Application Date: 2013-11-05
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Publication No.: US09772484B2Publication Date: 2017-09-26
- Inventor: Kenji Matsumoto , Nobuyuki Hashimoto , Makoto Kurihara , Masafumi Yokoyama , Ayano Tanabe
- Applicant: CITIZEN WATCH CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CITIZEN WATCH CO., LTD.
- Current Assignee: CITIZEN WATCH CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2012-261599 20121129
- International Application: PCT/JP2013/079919 WO 20131105
- International Announcement: WO2014/084007 WO 20140605
- Main IPC: G02B21/36
- IPC: G02B21/36 ; G02B27/42 ; G02F1/1333 ; G02B21/08 ; G02B5/18 ; G02F1/1343 ; G02F1/1335 ; G02F1/13363 ; G02F1/1347 ; G02B27/28 ; G02B27/58 ; G02B26/06 ; G02B27/10 ; G02B27/60

Abstract:
A light modulating device 103 includes: a selective diffraction device (10, 10′) 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 device 14 which 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.
Public/Granted literature
- US20150338631A1 LIGHT MODULATING DEVICE Public/Granted day:2015-11-26
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