Title:
LUMINOUS-FLUX CONTROL MEMBER, LIGHT EMISSION DEVICE, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/196244
Kind Code:
A1
Abstract:
The present invention relates to a luminous-flux control member of which light distribution characteristics are hardly changed even if the luminous-flux control member is surrounded by a coking material. The luminous-flux control member has: an entrance surface disposed on the back side of the luminous-flux control member; two reflecting surfaces disposed on the front side of the luminous-flux control member so as to face each other; a groove including the two reflecting surfaces; two exit surfaces; and two walls covering the opening of the groove. The two walls decrease in thickness toward the front side in the extending direction of the groove.
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Inventors:
SHINOHARA HIROYUKI
YOSHIDA MAMORU
YOSHIDA MAMORU
Application Number:
PCT/JP2020/012262
Publication Date:
October 01, 2020
Filing Date:
March 19, 2020
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
F21V5/00; F21S2/00; F21V3/00; F21V5/04; G02B5/00; G09F13/18; H01L33/58; F21Y115/10
Foreign References:
| JP2015230749A | 2015-12-21 | |||
| KR20120138301A | 2012-12-26 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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