Light emitting device, surface light source device and display apparatus

A light emitting device comprises a light emitting element and a light flux controlling member configured to control the distribution of light emitted from the light emitting element. The light flux controlling member comprises an incidence surface including an outer incidence surface including an i...

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Bibliographische Detailangaben
1. Verfasser:	Hiraka Kensuke
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A light emitting device comprises a light emitting element and a light flux controlling member configured to control the distribution of light emitted from the light emitting element. The light flux controlling member comprises an incidence surface including an outer incidence surface including an inclining surface formed such that the distance from the light emitting element increases as the distance from the optical axis of the light emitted from the light emitting element increases and an inner incidence surface, a reflection surface disposed on a side of the light flux controlling member opposite to the incidence surface, and a emission surface disposed to surround the optical axis. Light emitted from the light emitting surface center of the light emitting element does not reach the inclining surface.