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.:
Date of Patent:
May. 26, 2015
Filed:
Sep. 14, 2012
Tsutomu Ishii, Kanagawa-ken, JP;
Hajime Takeuchi, Kanagawa-Ken, JP;
Yasumasa Ooya, Kanagawa-Ken, JP;
Katsutoshi Nakagawa, Kanagawa-Ken, JP;
Yumi Ito, Kanagawa-Ken, JP;
Masaki Toyoshima, Kanagawa-Ken, JP;
Yasuhiro Shirakawa, Kanagawa-Ken, JP;
Ryo Sakai, Kanagawa-Ken, JP;
Tsutomu Ishii, Kanagawa-ken, JP;
Hajime Takeuchi, Kanagawa-Ken, JP;
Yasumasa Ooya, Kanagawa-Ken, JP;
Katsutoshi Nakagawa, Kanagawa-Ken, JP;
Yumi Ito, Kanagawa-Ken, JP;
Masaki Toyoshima, Kanagawa-Ken, JP;
Yasuhiro Shirakawa, Kanagawa-Ken, JP;
Ryo Sakai, Kanagawa-Ken, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama-shi, JP;
Abstract
A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/Im or less.