Invention Grant
- Patent Title: Light emitting device, surface light source device and display apparatus
- Patent Title (中): 发光装置,表面光源装置及显示装置
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Application No.: US14657074Application Date: 2015-03-13
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Publication No.: US09477116B2Publication Date: 2016-10-25
- Inventor: Kensuke Hiraka
- Applicant: Enplas Corporation
- Applicant Address: JP Saitama
- Assignee: Enplas Corporation
- Current Assignee: Enplas Corporation
- Current Assignee Address: JP Saitama
- Agency: Brundidge & Stanger, P.C.
- Priority: JP2014-055132 20140318
- Main IPC: G02F1/335
- IPC: G02F1/335 ; G02F1/1335 ; G02B19/00 ; G02B5/02

Abstract:
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.
Public/Granted literature
- US20150267877A1 LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE DEVICE AND DISPLAY APPARATUS Public/Granted day:2015-09-24
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