Invention Grant
- Patent Title: Lighting device using light-emitting elements as light source
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Application No.: US15864540Application Date: 2018-01-08
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Publication No.: US10151447B2Publication Date: 2018-12-11
- Inventor: Masae Suzuki , Ryuji Hotta , Masaki Tada
- Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2017-001632 20170110
- Main IPC: F21V7/00
- IPC: F21V7/00 ; F21V7/22 ; F21V11/16 ; F21V3/00 ; A47F3/00 ; F21Y115/10 ; F21V7/06 ; F21Y103/10

Abstract:
A lighting device includes a light source and first and second reflection surfaces. The first reflection surface reflects source light from the light source, and projects first light on first and second regions on an illuminated surface. The second region is closer to the lighting device than the first region. The second reflection surface is tinted in a prescribed color, and reflects secondary and higher-order reflection light of the source light, and projects second light on the second region. An absolute value of a difference between correlated color temperatures of the first light projected on the first region and of mixed light of the first and second lights projected on the second region is smaller than an absolute value of a difference between correlated color temperatures of the first light projected on the first region and of the first light projected on the second region.
Public/Granted literature
- US20180195688A1 LIGHTING DEVICE USING LIGHT-EMITTING ELEMENTS AS LIGHT SOURCE Public/Granted day:2018-07-12
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