Invention Grant
- Patent Title: Light emitting apparatus, surface light source apparatus and display apparatus
- Patent Title (中): 发光装置,表面光源装置和显示装置
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Application No.: US13483188Application Date: 2012-05-30
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Publication No.: US08487526B2Publication Date: 2013-07-16
- Inventor: Masao Yamaguchi , Yasuyuki Fukuda
- Applicant: Masao Yamaguchi , Yasuyuki Fukuda
- Applicant Address: JP Saitama
- Assignee: Enplas Corporation
- Current Assignee: Enplas Corporation
- Current Assignee Address: JP Saitama
- Agency: WASHIDA & associates
- Priority: JP2009-107848 20090427; JP2009-222574 20090928; JP2010-085182 20100401
- Main IPC: H01J1/62
- IPC: H01J1/62 ; H01J63/04

Abstract:
A light emitting apparatus has a light emitting element arranged on a substrate and a light flux controlling member. The light flux controlling member has: a light control/emission surface that controls a traveling direction of light; a concavity that allows a main beam to be incident inside; and a back surface that extends in a radial direction from an opening rim part of the concavity and that allows sub-beams to be incident inside. One of a grid convex part which arranges a plurality of strips of convex parts in a grid pattern and a grid concave part which arranges a plurality of strips of concave parts in a grid pattern is formed in the back surface of the light flux controlling member. The substrate and the back surface of the light flux controlling member are placed opposite to one another without intervention of a reflective sheet therebetween.
Public/Granted literature
- US20120235554A1 LIGHT EMITTING APPARATUS, SURFACE LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS Public/Granted day:2012-09-20
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