Invention Grant
- Patent Title: Illumination device
- Patent Title (中): 照明装置
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Application No.: US13798502Application Date: 2013-03-13
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Publication No.: US09046239B2Publication Date: 2015-06-02
- Inventor: Masaki Asai
- Applicant: MINEBEA CO., LTD.
- Applicant Address: JP Kitasaku-gun
- Assignee: MINEBEA CO., LTD.
- Current Assignee: MINEBEA CO., LTD.
- Current Assignee Address: JP Kitasaku-gun
- Agency: Oliff PLC
- Priority: JP2012-058683 20120315
- Main IPC: F21V3/00
- IPC: F21V3/00 ; F21V5/02 ; G02B3/08 ; G02B19/00 ; F21Y101/02

Abstract:
An illumination device includes: a light source including a plurality of light emission elements disposed adjacent to one another and phosphors; and a lens sheet including a plurality of first prisms disposed on an optical axis of the light source and disposed concentrically around the optical axis of the light source, wherein a plurality of second prisms reaching up to an outer peripheral portion of the lens sheet is radially formed around the optical axis of the light source on a surface of the lens sheet where the first prisms are formed.
Public/Granted literature
- US20130242568A1 ILLUMINATION DEVICE Public/Granted day:2013-09-19
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