LIGHT-EMITTING DEVICE

Japanese Patent JP2016018893

A

PROBLEM TO BE SOLVED: To provide a light-emitting device capable of enhancing the condensing performance, while suppressing up-sizing of an optical system.SOLUTION: A light-emitting device 1 includes a light-emitting component 10, a condenser lens 20, and a reflection member 30. The condenser lens 20 has an emitting surface 26, a first recess 12, a second recess 14, and a first reflection surface 21. The first recess 12 is concave to the opposite side of the emitting surface 26. The first recess 12 includes a first light incident surface 22 directing the light-emitting surface 11. When the LED light from the light-emitting surface 11 impinges on the first light incident surface 22, the incident light from the first light incident surface 22 is reflected by the first reflection surface 21 to the emitting surface 26. The first recess 12 covers the light-emitting surface 11. The reflection member 30 surrounds the first reflection surface 21 from the outside of the first recess 12, receives the light having an emission angle θ in the vicinity of 90 degrees, out of the emission light of the light-emitting component 10, and reflects that light to the emitting surface 26. The reflection member 30 is arranged on the side face side of the condenser lens 20.SELECTED DRAWING: Figure 1

OKUMURA SHINICHIRO

JP2014140690A

February 01, 2016

July 08, 2014

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MITSUBISHI ELECTRIC CORP
MITSUBISHI ELECTRIC CORP

H01L33/58; G02B3/04; G02B3/08

JP2008141152A	2008-06-19
JP2010262187A	2010-11-18
JP2009169095A	2009-07-30
JP2013130835A	2013-07-04
JP2007035788A	2007-02-08
JP2007142178A	2007-06-07
JPS59180515A	1984-10-13

US7580192B1

2009-08-25

Mamoru Takada
Hideki Takahashi
Jiro Ozawa

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