Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIGHT FLUX CONTROL MEMBER, PLANE LIGHT SOURCE DEVICE AND DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2016045306
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light flux control member that is used in plane light source devices suppressing luminance unevenness and high in light utilization efficiency.SOLUTION: A light flux control member has: a first incidence plane 151; a second incidence plane 152; a total reflection plane 153; and an emerging plane 154, and is arranged on a light emitting element to be arranged in an end part in a light emitting element array having a plurality of light emitting elements arranged in one row along a first direction. The emerging plane has: a first emerging region 154a; a second emerging region 154b; and a third emerging region 154c. Each emerging region is configured to have a following configuration in a cross section including an optical axis of the plurality of light emitting elements arranged on the light emitting element array. A first region is configured such that at least a part of light incident upon the second incidence plane and reflected upon the total reflection plane is emitted as refracting at least the part thereof on a center side in the light emitting element array further than a center axis CA1, a second region is configured to include a plane at which the light incident mainly upon the first incidence plane arrives, and a third region is configured to emit a light flux incident upon the second incidence plane and reflected upon the total reflection plane as diverging the light flux.SELECTED DRAWING: Figure 3

Inventors:
NAKAMURA MASATO
Application Number:
JP2014168457A
Publication Date:
April 04, 2016
Filing Date:
August 21, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ENPLAS CORP
International Classes:
G02B19/00; F21S2/00; F21V5/00; F21V5/04; G02B3/00; G02B13/00; G02F1/13357
Domestic Patent References:
JP2005236299A2005-09-02
JP2007059073A2007-03-08
JP2003209288A2003-07-25
JP2013205631A2013-10-07
JP2012212047A2012-11-01
JP2010034046A2010-02-12
JP2014135233A2014-07-24
JP2011222380A2011-11-04
JP2014017182A2014-01-30
JPH10319873A1998-12-04
JPS62110989U1987-07-15
JP2002094129A2002-03-29
JP2009528556A2009-08-06
JP2003330109A2003-11-19
JP2015090772A2015-05-11
Attorney, Agent or Firm:
Koichi Washida