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Patent Searching and Data


Title:
LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/203079
Kind Code:
A1
Abstract:
A light-emitting device (A), provided with: a laser light source (1) for emitting laser light (100); a casing (2A) having a bottom wall part (3) and side wall parts; and first wavelength converters (20), which are provided to the side wall parts and which include a first phosphor. Laser light is beamed from the laser light source to the bottom wall part of the casing, and the first phosphor is excited by diffused light of the laser light diffused at the bottom wall part. Such a configuration makes it possible to obtain a light emission device (A) with which it is possible to increase the power density of output light and improve color uniformity and chromaticity flexibility.

Inventors:
OKUNO TATSUYA
ABE TAKESHI
OSHIO SHOZO
Application Number:
PCT/JP2019/015550
Publication Date:
October 24, 2019
Filing Date:
April 10, 2019
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
C09K11/08; F21V7/26; F21V7/00; F21V7/05; F21V7/24; F21V15/01; H01S5/0239; F21Y115/30
Foreign References:
JP2017083907A2017-05-18
JP2014179231A2014-09-25
JP5090549B22012-12-05
JP2018080467A2018-05-24
JP2018209007A2018-11-06
Other References:
See also references of EP 3770492A4
Attorney, Agent or Firm:
ITO Masakazu et al. (JP)
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