Title:
LIGHT FLUX CONTROL MEMBER, LIGHT-EMITTING DEVICE, AREA LIGHT SOURCE DEVICE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/070948
Kind Code:
A1
Abstract:
The present invention pertains to the provision of a light flux control member capable of suppressing uneven luminance even when used in a thin area light source device. The present invention provides a light flux control member for controlling distribution of light emitted from a light-emitting element, said member having a light entrance surface arranged so as to intersect with a central axis at the back side thereof, multiple first ridges arranged so as to surround the central axis at the front side, and a light exit surface arranged so as to surround the multiple first ridges at the front side, wherein the multiple first ridges are radially arranged with respect to the central axis in a plan view of the light flux control member.
Inventors:
MOCHIDA TOSHIHIKO
FUJII YUKI
FUJII YUKI
Application Number:
PCT/JP2020/038351
Publication Date:
April 15, 2021
Filing Date:
October 09, 2020
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
F21V5/00; F21S2/00; G02B5/00; G02B5/02; G02F1/13357; F21Y115/10
Foreign References:
| JP2014022126A | 2014-02-03 | |||
| JP2014063718A | 2014-04-10 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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