Title:
LIGHT FLUX CONTROL MEMBER, LIGHT-EMITTING DEVICE, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/038975
Kind Code:
A1
Abstract:
This light flux control member comprises: two entry surfaces disposed on two sides of a virtual plane serving as a boundary and containing the optical axis of the light-emitting element; a first protruding strip disposed between the two entry surfaces and along the virtual plane, into which light that has exited the light-emitting element enters; two total reflection surfaces, each formed at a position facing the light-emitting element with one of the entry surfaces sandwiched therebetween; two light-guide portions disposed at opposite positions with the first protruding strip sandwiched therebetween; and an exit surface formed on the external surface of each of the light-guide portions. A second light flux control member is disposed so as to cover the first protruding strip and includes a diffuse transmission portion whereby light that has entered and exited the first protruding strip is transmitted while being diffused.
Inventors:
YAMADA KYOUHEI
Application Number:
PCT/JP2015/068113
Publication Date:
March 17, 2016
Filing Date:
June 24, 2015
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
F21V5/00; F21S2/00; F21V5/02; F21V7/00
Domestic Patent References:
| WO2013157243A1 | 2013-10-24 | |||
| WO2012004975A1 | 2012-01-12 |
Foreign References:
| JP2014063761A | 2014-04-10 | |||
| JP2014502022A | 2014-01-23 | |||
| JP2012028619A | 2012-02-09 |
Other References:
See also references of EP 3193077A4
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
Koichi Washida (JP)
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