LIGHT FLUX CONTROL MEMBER, LIGHT-EMITTING DEVICE AND LIGHTING DEVICE

WIPO Patent Application WO/2016/009798

A1

This light flux control member (140) comprises a first light flux control member (150) and a second light flux control member (160). The first light flux control member (150) comprises: an entry region (151) including a Fresnel lens portion (152) and an entry surface (155); an exit surface (156); and a reflective surface (157). The second light flux control member (160) comprises a transmissive and reflective surface (165). The reflective surface (157) is a rotationally symmetric surface with the central axis of the first light flux control member (150) as the rotation axis, and the reflective surface (157) is formed such that the generatrix of the reflective surface (157) is a concave curve relative to the entry surface (155) and such that the outer peripheral portion of the reflective surface (157) is distanced farther from an orthogonal plane compared to the inner peripheral portion thereof in a direction that follows an optical axis LA, which is the center of the total light flux of at least one light-emitting element (130), said orthogonal plane passing through an arbitrary point on the entry surface (155) and being orthogonal to the optical axis LA.

NAKAMURA MASATO

PCT/JP2015/068112

January 21, 2016

June 24, 2015

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ENPLAS CORP (JP)

F21V5/04; F21S2/00; F21V3/00; F21V5/00; F21V7/00; F21V13/00

WO2014054226A1	2014-04-10
WO2014041745A1	2014-03-20
WO2013118448A1	2013-08-15

JP2014103062A	2014-06-05
JP2013140318A	2013-07-18

WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)

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