LIGHT EMITTING DEVICE AND ILLUMINATING DEVICE PROVIDED WITH THE SAME

(19)

(11)

EP 2 175 193 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	published in accordance with Art. 153(4) EPC

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	07.07.2010 Bulletin 2010/27

(43)	Date of publication:
	14.04.2010 Bulletin 2010/15

(21)	Application number: 08827067.3

(22)	Date of filing: 08.08.2008

(51)

International Patent Classification (IPC):

F21V 5/04^(2006.01)
F21V 5/00^(2006.01)
G02B 5/02^(2006.01)
F21Y 101/02^(2006.01)

F21S 2/00^(2006.01)
G02B 5/00^(2006.01)
H01L 33/00^(2010.01)

(86)	International application number:
	PCT/JP2008/064342

(87)	International publication number:
	WO 2009/020214 (12.02.2009 Gazette 2009/07)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

(30)

Priority:

09.08.2007 JP 2007208648

(71)	Applicant: Sharp Kabushiki Kaisha
	Osaka-shi, Osaka 545-8522 (JP)

(72)	Inventor:
	KOKUBO, Fumio Osaka 545-8522 (JP)

(74)	Representative: Müller - Hoffmann & Partner
	Patentanwälte Innere Wiener Strasse 17 81667 München 81667 München (DE)

(54)	LIGHT EMITTING DEVICE AND ILLUMINATING DEVICE PROVIDED WITH THE SAME

(57) A light-emitting device (10) includes: a light-emitting element (1); and a light flux controlling member (2) for controlling light emitted from the light-emitting element (1), the light flux controlling member (2) has (i) a light-incoming surface (2a) which the light emitted from the light-emitting element (1) enters and (ii) a light-outgoing surface (2b), and the following equation (1) is satisfied where r is a length, from a light axis Z of the light-emitting device (10), of a plane that is provided at a certain distance from the light flux controlling member (2) in a direction parallel to the light axis Z so as to be perpendicular to the light axis Z, φ₁ is an angle between the light emitted from the light-emitting element (1) and the light axis, P(φ₁) is a light distribution property of the light-emitting element (1). This provides a light-emitting device that scatters light without generating uneven brightness on a liquid crystal display panel, reduces a reflectance caused by the Fresnel's reflection, and has an improved scattering ability.