ILLUMINATION DEVICE - JAPAN APPLIED OPTICS CO LTD

Title:

ILLUMINATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2012/020597

Kind Code:

A1

Abstract:

An illumination device is provided which has a simple construction that is good for mass production, and which achieves effective illumination with light showing little non-uniformity of colour. The illumination device comprises a plurality of multicolour light-emitting diodes (13a, 13b, 13c, 13d) which are equipped with LED chips (r, g, b, w) of a plurality of different light emission colours and are arranged on the same surface, and illumination is effected by mixing the light produced by this plurality of multicolour light-emitting diodes (13a, 13b, 13c, 13d). At least one of the plurality of multicolour light-emitting diodes (13a, 13b, 13c, 13d) has a positional relationship such that when the at least one multicolour light-emitting diode is positioned over another multicolour light-emitting diode due to parallel movement, the at least one multicolour light-emitting diode is turned by a predetermined angle on the basis of the other multicolour light-emitting diode in such a way that LED chips which emit the same colour are not positioned over one another.

Inventors:

ARAI SHIGERU (JP)

Application Number:

PCT/JP2011/063172

Publication Date:

February 16, 2012

Filing Date:

June 08, 2011

Export Citation:

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Assignee:

JAPAN APPLIED OPTICS CO LTD (JP)
ARAI SHIGERU (JP)

International Classes:

F21V5/08; F21S2/00; F21V17/00; H01L33/58; F21Y101/02

Foreign References:

JP2010511269A	2010-04-08
JP2009004276A	2009-01-08
JP2006128217A	2006-05-18
JP2010073654A	2010-04-02
JP2000030506A	2000-01-28
JP2009545854A	2009-12-24
US5752766A	1998-05-19
US20080304536A1	2008-12-11
JPH087629B2	1996-01-29
JP2008047809A	2008-02-28
JP2006079991A	2006-03-23
JP2001307502A	2001-11-02

Other References: