Title:
A light flux control member, a luminescent device, a lighting installation, and a form block
Document Type and Number:
Japanese Patent JP6181377
Kind Code:
B2
Abstract:
A luminous flux control member (140) according to the present invention comprises: an incident region (141) on which the light emitted from a light emitting element (120) is incident; and an emission region (142) for emitting the light incident from the incident region (141). The incident region (141) comprises a refractive part (144) and a Fresnel lens part (145) located outside the refractive part (144). The Fresnel lens part (145) has a plurality of projected stripes arranged on each side of a plurality of virtual squares, the virtual squares being mutually similar and concentric with the respective sides thereof arranged parallel to each other.
Inventors:
Saito Kyokei
Application Number:
JP2013012213A
Publication Date:
August 16, 2017
Filing Date:
January 25, 2013
Export Citation:
Assignee:
Enplus Inc.
International Classes:
G02B5/00; F21S2/00; F21V5/00; F21V5/04; G02B3/08; G03B15/02; G03B15/05; H01L33/58; H04N5/238
Domestic Patent References:
| JP2010251213A | ||||
| JP2002221605A | ||||
| JP2007134316A | ||||
| JP2004327955A | ||||
| JP2004233788A | ||||
| JP2012204085A | ||||
| JP2007230058A | ||||
| JP2002071912A | ||||
| JP2010238837A | ||||
| JP2012063736A |
Attorney, Agent or Firm:
Koichi Washida
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