Invention Grant
- Patent Title: Light-emitting device and illumination device
- Patent Title (中): 发光装置和照明装置
-
Application No.: US13813830Application Date: 2011-07-29
-
Publication No.: US08926156B2Publication Date: 2015-01-06
- Inventor: Akinobu Seki , Hiroshi Takatori , Kyouhei Yamada , Masato Nakamura , Masayo Takizawa , Noriyuki Kawahara
- Applicant: Akinobu Seki , Hiroshi Takatori , Kyouhei Yamada , Masato Nakamura , Masayo Takizawa , Noriyuki Kawahara
- Applicant Address: JP Saitama
- Assignee: Enplas Corporation
- Current Assignee: Enplas Corporation
- Current Assignee Address: JP Saitama
- Agency: Brundidge & Stanger, P.C.
- Priority: JP2010-174783 20100803; JP2010-234966 20101019
- International Application: PCT/JP2011/004332 WO 20110729
- International Announcement: WO2012/017636 WO 20120209
- Main IPC: F21V13/08
- IPC: F21V13/08 ; F21V7/00 ; F21V5/04 ; F21V13/02 ; F21V5/02 ; F21V17/06 ; F21V17/16 ; G02B19/00 ; F21Y101/02 ; H01L33/58

Abstract:
A light-emitting device combining a first luminous flux control member having a total reflection surface and emitting light from an emission surface in a narrow angle range centered mainly on an optical axis, and a second luminous flux control member arranged to surround the total reflection surface of the first luminous flux control member. The second luminous flux control member (102) of the light-emitting device is provided with a second incidence surface (126a) and a second emitting surface (126b). Of the light emitted from the light-emitting element (200), the light incident to the second incidence surface (126a) is within a range of angles θ larger than a largest angle to the optical axis of the light incident to the first luminous flux control member (101). The second emitting surface (126b) controls the light incident to the second incidence surface (126a) to have light distribution characteristics different from those of the light emitted from the first luminous flux control member (101), and emits the light.
Public/Granted literature
- US20130128576A1 LIGHT-EMITTING DEVICE AND ILLUMINATION DEVICE Public/Granted day:2013-05-23
Information query