Title:
LUMINOUS FLUX CONTROL MEMBER, LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE DEVICE, AND DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2022111718
Kind Code:
A
Abstract:
To provide a light flux control member capable of more uniformly irradiating light emitted from a light emitting element.SOLUTION: A light flux control member includes a plurality of incident units each including an incident surface and a reflective surface, a plurality of output units, and a step surface. When the light flux control member is viewed from above, in the incident unit including a part of the side surface of the light flux control member, a distance between the center of the reflective surface and a first arbitrary point on the edge of the front side of the step surface is longer than a distance between the center of the reflective surface and a second point on the edge of the front side of the side surface of the light flux control member located on the side opposite to the first point with respect to the center of the reflective surface.SELECTED DRAWING: Figure 8
Inventors:
MOMOI TAKURO
Application Number:
JP2021007335A
Publication Date:
August 01, 2022
Filing Date:
January 20, 2021
Export Citation:
Assignee:
ENPLAS CORP
International Classes:
H01L33/58; F21S2/00; F21V5/00; G02B5/02; G02B5/10
Attorney, Agent or Firm:
Washeda International Patent Office
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