BEAM-CONTROL MEMBER AND ILLUMINATION DEVICE

Title:

BEAM-CONTROL MEMBER AND ILLUMINATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/118448

Kind Code:

A1

Abstract:

A beam-control member (170) has a substantially cylindrical holder (160) that is light-permeable, and a first beam-control member (140) disposed on an end surface (161) of the holder, the first beam-control member (140) reflecting part of the light emitted from a light-emitting element (130) and admitting part of the light. A guide protrusion (162) and a tab (163) are provided on the end surface (161) of the holder. A concave portion (144) corresponding to the tab (163) is provided on an outer circumferential part of one surface of the first beam-control member (140). The first beam-control member (140) is radially mated in a rotatable manner along the guide protrusion (162). Rotating the first beam-control member (140) on the end surface (161) of the holder so that the tab (163) and the concave portion (144) engage causes the first beam-control member (140) to be secured on the end surface (161) of the holder.

Inventors:

SEKI AKINOBU
KAWAHARA NORIYUKI

Application Number:

PCT/JP2013/000421

Publication Date:

August 15, 2013

Filing Date:

January 28, 2013

Export Citation:

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Assignee:

ENPLAS CORP (JP)

International Classes:

F21S2/00; F21V5/00; F21V5/04; F21V7/00; F21V17/00; G02B5/08; G02B5/10; G02B17/00

Foreign References:

JP2003258319A	2003-09-12
JP2003178612A	2003-06-27
JP2003347601A	2003-12-05
JP2011124034A	2011-06-23
JP2003258319A	2003-09-12

Other References: