Title:
光学素子及びそれを用いた半導体発光装置
Document Type and Number:
Japanese Patent JP5552573
Kind Code:
B2
Abstract:
An optical element includes a phosphor layer containing a phosphor which is excited by light of a first wavelength and radiates light of a second wavelength different from the first wavelength, a first optical member provided on a first surface of the phosphor layer and configured to concentrate light in the phosphor layer, and a second optical member provided on the first surface of the phosphor layer or the same side to which the first surface faces, or on a second surface opposite to the first surface, and configured to convert light radiated from the phosphor layer into parallel light.
Inventors:
Kazuhiko Yamanaka
Shin-ichi Takigawa
Shin-ichi Takigawa
Application Number:
JP2013523771A
Publication Date:
July 16, 2014
Filing Date:
March 08, 2012
Export Citation:
Assignee:
Panasonic incorporated company
International Classes:
H01L33/50; F21S2/00; F21V5/00; F21V5/04; F21V9/08; G02B3/00; G09F9/00; F21Y101/02
Domestic Patent References:
| JP2002341246A | 2002-11-27 | |||
| JPH1092002A | 1998-04-10 | |||
| JP2005251929A | 2005-09-15 | |||
| JP2002169480A | 2002-06-14 | |||
| JP2010262770A | 2010-11-18 | |||
| JP2003295319A | 2003-10-15 | |||
| JP2010186886A | 2010-08-26 |
Foreign References:
| WO2008105428A1 | 2008-09-04 | |||
| WO2007105647A1 | 2007-09-20 |
Attorney, Agent or Firm:
Patent business corporation MAEDA PATENT OFFICE