Title:
照明装置
Document Type and Number:
Japanese Patent JP5839674
Kind Code:
B2
Abstract:
A lighting device (100) has a light-emitting element (120) positioned on a substrate (110), and a light beam control member (130) that reflects some of the light emitted by the light-emitting element (120), and allows some of the light to pass through. The light beam control member (130) has a reflective surface (132) that faces the light-emitting element (120), and reflects some of the light emitted by the light-emitting element (120). The reflective surface (132) has an aspherical curved surface, the height of which increases from the light-emitting element (120) toward the outer periphery from the center. The reflective surface (132) reflects light in a lateral direction in a region at the center, and reflects light in a backward direction in a region at the outer periphery.
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Inventors:
Masato Nakamura
Application Number:
JP2011243366A
Publication Date:
January 06, 2016
Filing Date:
November 07, 2011
Export Citation:
Assignee:
Enplus Inc.
International Classes:
F21K9/00; F21S2/00; F21V5/00; F21V7/00
Domestic Patent References:
| JP2010157459A | ||||
| JP2009187951A | ||||
| JP3163068U | ||||
| JP3158378U | ||||
| JP2011504297A | ||||
| JP2003505835A |
Attorney, Agent or Firm:
Koichi Washida