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Patent Searching and Data


Title:
LUMINOUS FLUX CONTROL MEMBER, LIGHT-EMITTING DEVICE, PLANAR LIGHT SOURCE DEVICE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/135559
Kind Code:
A1
Abstract:
[Problem] To provide a luminous flux control member capable of mitigating effects of leg parts on a luminance distribution in the luminous flux control member. [Solution] Provided is a luminous flux control member that controls distribution of light emitted from a light source. The bottom surface positioned on the light source side of the luminous flux control member has at least an inclined section inclined upward from the central axis side toward the periphery side of the luminous flux control member. Leg parts protruding toward the light source side are arranged on the inclined section. At least a part of the back side of the side surface of each leg part relative to the central axis includes a plane or a curved surface protruding toward the central axis side or toward the periphery side and having a radius of curvature equal to or greater than a radius of curvature of a central circumscribed circle that is centered around the central axis and that is tangent to the back side of the side surface of the leg part.

Inventors:
NAGAMI HARUTO (JP)
Application Number:
PCT/JP2018/001324
Publication Date:
July 26, 2018
Filing Date:
January 18, 2018
Export Citation:
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Assignee:
ENPLAS CORP (JP)
International Classes:
F21V5/00; F21S2/00; F21V5/02; F21V5/04; F21V19/00; G02B3/00; G02B13/00; G02B13/18; G02F1/13357; F21Y115/10
Foreign References:
JP2016127030A2016-07-11
JP2011044411A2011-03-03
Attorney, Agent or Firm:
ISODA Shiro (JP)
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