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Patent Searching and Data


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:
JP2015/068113
Publication Date:
March 17, 2016
Filing Date:
June 24, 2015
Export Citation:
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Assignee:
ENPLAS CORPORATION (2-30-1, Namiki Kawaguchi-sh, Saitama 34, 〒3320034, JP)
International Classes:
F21V5/00; F21S2/00; F21V5/02; F21V7/00
Domestic Patent References:
WO2013157243A12013-10-24
WO2012004975A12012-01-12
Foreign References:
JP2014063761A2014-04-10
JP2014502022A2014-01-23
JP2012028619A2012-02-09
Other References:
See also references of EP 3193077A4
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg. 1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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