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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8926156 B1

PDFFull Text
Date of Patent:
Jan. 06, 2015

Filed:

Jul. 29, 2011

Light-emitting device and illumination device

Applicants:

Akinobu Seki, Saitama, JP;

Hiroshi Takatori, Saitama, JP;

Kyouhei Yamada, Saitama, JP;

Masato Nakamura, Saitama, JP;

Masayo Takizawa, Saitama, JP;

Noriyuki Kawahara, Saitama, JP;

Inventors:

Akinobu Seki, Saitama, JP;

Hiroshi Takatori, Saitama, JP;

Kyouhei Yamada, Saitama, JP;

Masato Nakamura, Saitama, JP;

Masayo Takizawa, Saitama, JP;

Noriyuki Kawahara, Saitama, JP;

Assignee:

Enplas Corporation, Saitama, JP;

Attorney:

Brundidge & Stanger, P.C.

Primary Examiner:

Elmito Breval

Int. Cl.
CPC ...
F21V 13/08 (2006.01); F21V 7/00 (2006.01); F21V 5/04 (2006.01); F21V 13/02 (2006.01); F21V 5/02 (2006.01); F21V 17/06 (2006.01); F21V 17/16 (2006.01); G02B 19/00 (2006.01); F21Y 101/02 (2006.01); H01L 33/58 (2010.01);
U.S. Cl.
CPC ...
F21V 13/08 (2013.01); F21V 5/04 (2013.01); F21V 7/0091 (2013.01); F21V 13/02 (2013.01); F21V 7/00 (2013.01); F21V 5/02 (2013.01); F21V 17/06 (2013.01); F21V 17/164 (2013.01); G02B 19/0047 (2013.01); G02B 19/0028 (2013.01); G02B 19/0061 (2013.01); F21Y 2101/02 (2013.01); H01L 33/58 (2013.01);
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 () of the light-emitting device is provided with a second incidence surface () and a second emitting surface (). Of the light emitted from the light-emitting element (), the light incident to the second incidence surface () 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 (). The second emitting surface () controls the light incident to the second incidence surface () to have light distribution characteristics different from those of the light emitted from the first luminous flux control member (), and emits the light.

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